diff --git a/libs/ngrx-toolkit/src/lib/with-entity-resources.spec.ts b/libs/ngrx-toolkit/src/lib/with-entity-resources.spec.ts
index 131b2e0b..1886fa83 100644
--- a/libs/ngrx-toolkit/src/lib/with-entity-resources.spec.ts
+++ b/libs/ngrx-toolkit/src/lib/with-entity-resources.spec.ts
@@ -7,6 +7,7 @@ import {
   setAllEntities,
 } from '@ngrx/signals/entities';
 import { withEntityResources } from './with-entity-resources';
+import { withPreviousValue } from './with-resource/tests/util/snapshot';
 
 type Todo = { id: number; title: string; completed: boolean };
 const wait = (ms = 0) => new Promise((r) => setTimeout(r, ms));
@@ -199,6 +200,99 @@ describe('withEntityResources', () => {
       ]);
     });
 
+    it('does not support setAllEntities/addEntity/removeEntity for unnamed which are of type Resource', async () => {
+      const Store = signalStore(
+        { providedIn: 'root', protectedState: false },
+        withEntityResources(() =>
+          withPreviousValue(
+            resource({
+              loader: () => Promise.resolve([] as Todo[]),
+              defaultValue: [],
+            }),
+          ),
+        ),
+      );
+      const store = TestBed.inject(Store);
+
+      await wait();
+
+      const invalidSetAll = () =>
+        patchState(
+          store,
+          // @ts-expect-error Resources which are of type Resource should not support entity updaters
+          setAllEntities([
+            { id: 1, title: 'A', completed: false },
+            { id: 2, title: 'B', completed: true },
+          ] as Todo[]),
+        );
+
+      const invalidAdd = () =>
+        patchState(
+          store,
+          // @ts-expect-error Resources which are of type Resource should not support entity updaters
+          addEntity({ id: 3, title: 'C', completed: false } as Todo),
+        );
+
+      // @ts-expect-error Resources which are of type Resource should not support entity updaters
+      const invalidRemove = () => patchState(store, removeEntity(2));
+
+      expect(invalidSetAll).toBeDefined();
+      expect(invalidAdd).toBeDefined();
+      expect(invalidRemove).toBeDefined();
+      expect(store.ids()).toEqual([]);
+      expect(store.entities()).toEqual([]);
+    });
+
+    it('does not support setAllEntities/addEntity/removeEntity for named which are of type Resource', async () => {
+      const Store = signalStore(
+        { providedIn: 'root', protectedState: false },
+        withEntityResources(() => ({
+          todos: withPreviousValue(
+            resource({
+              loader: () => Promise.resolve([] as Todo[]),
+              defaultValue: [],
+            }),
+          ),
+        })),
+      );
+
+      const store = TestBed.inject(Store);
+
+      await wait();
+
+      const invalidSetAll = () =>
+        patchState(
+          store,
+          // @ts-expect-error Resources which are of type Resource should not support entity updaters
+          setAllEntities(
+            [
+              { id: 1, title: 'A', completed: false },
+              { id: 2, title: 'B', completed: true },
+            ] as Todo[],
+            { collection: 'todos' },
+          ),
+        );
+
+      const invalidAdd = () =>
+        patchState(
+          store,
+          // @ts-expect-error Resources which are of type Resource should not support entity updaters
+          addEntity({ id: 3, title: 'C', completed: false } as Todo, {
+            collection: 'todos',
+          }),
+        );
+
+      const invalidRemove = () =>
+        // @ts-expect-error Resources which are of type Resource should not support entity updaters
+        patchState(store, removeEntity(2, { collection: 'todos' }));
+
+      expect(invalidSetAll).toBeDefined();
+      expect(invalidAdd).toBeDefined();
+      expect(invalidRemove).toBeDefined();
+      expect(store.todosIds()).toEqual([]);
+      expect(store.todosEntities()).toEqual([]);
+    });
+
     it('supports setAllEntities/addEntity/removeEntity for named', async () => {
       const Store = signalStore(
         { providedIn: 'root', protectedState: false },
diff --git a/libs/ngrx-toolkit/src/lib/with-entity-resources.ts b/libs/ngrx-toolkit/src/lib/with-entity-resources.ts
index f3afac0f..91fac185 100644
--- a/libs/ngrx-toolkit/src/lib/with-entity-resources.ts
+++ b/libs/ngrx-toolkit/src/lib/with-entity-resources.ts
@@ -1,4 +1,13 @@
-import { ResourceRef, Signal, isSignal, linkedSignal } from '@angular/core';
+import {
+  Resource,
+  ResourceRef,
+  ResourceSnapshot,
+  ResourceStatus,
+  Signal,
+  computed,
+  isSignal,
+  linkedSignal,
+} from '@angular/core';
 import {
   SignalStoreFeature,
   SignalStoreFeatureResult,
@@ -6,6 +15,7 @@ import {
   signalStoreFeature,
   withComputed,
   withLinkedState,
+  withProps,
 } from '@ngrx/signals';
 import {
   EntityId,
@@ -17,7 +27,6 @@ import {
 import {
   NamedResourceResult,
   ResourceResult,
-  isResourceRef,
   withResource,
 } from './with-resource';
 
@@ -94,6 +103,15 @@ export function withEntityResources<
   resourceFactory: (
     store: Input['props'] & Input['methods'] & StateSignals<Input['state']>,
   ) => ResourceRef<TypedEntityResourceValue<Entity>>,
+): SignalStoreFeature<Input, EntityResourceRefResult<Entity>>;
+
+export function withEntityResources<
+  Input extends SignalStoreFeatureResult,
+  Entity extends { id: EntityId },
+>(
+  resourceFactory: (
+    store: Input['props'] & Input['methods'] & StateSignals<Input['state']>,
+  ) => Resource<TypedEntityResourceValue<Entity>>,
 ): SignalStoreFeature<Input, EntityResourceResult<Entity>>;
 
 export function withEntityResources<
@@ -111,7 +129,7 @@ export function withEntityResources<
 >(
   entityResourceFactory: (
     store: Input['props'] & Input['methods'] & StateSignals<Input['state']>,
-  ) => ResourceRef<ResourceValue> | EntityDictionary,
+  ) => Resource<ResourceValue> | EntityDictionary,
 ): SignalStoreFeature<Input> {
   return (store) => {
     const resourceOrDict = entityResourceFactory({
@@ -120,7 +138,9 @@ export function withEntityResources<
       ...store.methods,
     });
 
-    if (isResourceRef(resourceOrDict)) {
+    if (isEntityResourceRef(resourceOrDict)) {
+      return createUnnamedEntityResourceRef(resourceOrDict)(store);
+    } else if (isEntityResource(resourceOrDict)) {
       return createUnnamedEntityResource(resourceOrDict)(store);
     }
     return createNamedEntityResources(resourceOrDict)(store);
@@ -133,13 +153,29 @@ export function withEntityResources<
  * because {@link withResource} creates a Proxy around the resource value
  * to avoid the error throwing behavior of the Resource API.
  */
-function createUnnamedEntityResource<E extends Entity>(
+function createUnnamedEntityResourceRef<E extends Entity>(
   resource: ResourceRef<TypedEntityResourceValue<E>>,
 ) {
   return signalStoreFeature(
     withResource(() => resource),
-    withLinkedState(({ value }) => {
-      const { ids, entityMap } = createEntityDerivations(value);
+    withLinkedState((store) => {
+      // `value` exists in either the `props` or `state`, but `store` here only
+      // infers the `state` case, so we have to do this bleh casting
+      const propsOrStateStore = store as {
+        value: Signal<TypedEntityResourceValue<E>>;
+        status: Signal<ResourceStatus>;
+        error: Signal<Error | undefined>;
+        isLoading: Signal<boolean>;
+        snapshot: Signal<ResourceSnapshot<TypedEntityResourceValue<E>>>;
+      };
+      const resourceValue = propsOrStateStore[
+        `value`
+      ] as Signal<EntityResourceValue>;
+      if (!isSignal(resourceValue)) {
+        throw new Error(`Resource's value ${name}Value does not exist`);
+      }
+
+      const { ids, entityMap } = createEntityDerivations(resourceValue);
 
       return {
         entityMap,
@@ -152,6 +188,38 @@ function createUnnamedEntityResource<E extends Entity>(
   );
 }
 
+function createUnnamedEntityResource<E extends Entity>(
+  resource: Resource<TypedEntityResourceValue<E>>,
+) {
+  return signalStoreFeature(
+    withResource(() => resource),
+    withProps((store) => {
+      const propsStore = store as {
+        value: Signal<TypedEntityResourceValue<E>>;
+        status: Signal<ResourceStatus>;
+        error: Signal<Error | undefined>;
+        isLoading: Signal<boolean>;
+        snapshot: Signal<ResourceSnapshot<TypedEntityResourceValue<E>>>;
+      };
+
+      const resourceValue = propsStore.value as Signal<EntityResourceValue>;
+      if (!isSignal(resourceValue)) {
+        throw new Error(`Resource's value signal does not exist`);
+      }
+
+      const { ids, entityMap } = createReadonlyEntityDerivations(resourceValue);
+
+      return {
+        ids,
+        entityMap,
+      };
+    }),
+    withComputed(({ ids, entityMap }) => ({
+      entities: createComputedEntities(ids, entityMap),
+    })),
+  );
+}
+
 /**
  * See {@link createUnnamedEntityResource} for why we cannot use the value of `resource` directly.
  */
@@ -160,23 +228,46 @@ function createNamedEntityResources<Dictionary extends EntityDictionary>(
 ) {
   const keys = Object.keys(dictionary);
 
-  const stateFactories = keys.map((name) => {
-    return (store: Record<string, unknown>) => {
-      const resourceValue = store[
-        `${name}Value`
-      ] as Signal<EntityResourceValue>;
-      if (!isSignal(resourceValue)) {
-        throw new Error(`Resource's value ${name}Value does not exist`);
-      }
+  const stateFactories = keys
+    .filter((name) => isEntityResourceRef(dictionary[name]))
+    .map((name) => {
+      return (store: Record<string, unknown>) => {
+        const resourceValue = store[
+          `${name}Value`
+        ] as Signal<EntityResourceValue>;
+        if (!isSignal(resourceValue)) {
+          throw new Error(`Resource's value ${name}Value does not exist`);
+        }
 
-      const { ids, entityMap } = createEntityDerivations(resourceValue);
+        const { ids, entityMap } = createEntityDerivations(resourceValue);
 
-      return {
-        [`${name}EntityMap`]: entityMap,
-        [`${name}Ids`]: ids,
+        return {
+          [`${name}EntityMap`]: entityMap,
+          [`${name}Ids`]: ids,
+        };
       };
-    };
-  });
+    });
+
+  const propsFactories = keys
+    .filter((name) => !isEntityResourceRef(dictionary[name]))
+    .map((name) => {
+      return (store: Record<string, unknown>) => {
+        const resourceValue = store[
+          `${name}Value`
+        ] as Signal<EntityResourceValue>;
+        if (!isSignal(resourceValue)) {
+          throw new Error(`Resource's value ${name}Value does not exist`);
+        }
+
+        const { ids, entityMap } =
+          createReadonlyEntityDerivations(resourceValue);
+
+        return {
+          [`${name}EntityMap`]: entityMap,
+          [`${name}Ids`]: ids,
+        };
+      };
+    });
 
   const computedFactories = keys.map((name) => {
     return (store: Record<string, unknown>) => {
@@ -204,13 +295,28 @@ function createNamedEntityResources<Dictionary extends EntityDictionary>(
     withResource(() => dictionary),
     withLinkedState((store) =>
       stateFactories.reduce(
-        (acc, factory) => ({ ...acc, ...factory(store) }),
+        (acc, factory) => ({
+          ...acc,
+          ...factory(store),
+        }),
+        {},
+      ),
+    ),
+    withProps((store) =>
+      propsFactories.reduce(
+        (acc, factory) => ({
+          ...acc,
+          ...factory(store),
+        }),
         {},
       ),
     ),
     withComputed((store) =>
       computedFactories.reduce(
-        (acc, factory) => ({ ...acc, ...factory(store) }),
+        (acc, factory) => ({
+          ...acc,
+          ...factory(store),
+        }),
         {},
       ),
     ),
@@ -238,12 +344,37 @@ function createNamedEntityResources<Dictionary extends EntityDictionary>(
  * - For named resources we return `NamedResourceResult<T>` intersected with
  *   `NamedEntityState<E, Name>` and `NamedEntityProps<E, Name>` for each entry.
  */
-export type EntityResourceResult<Entity> = {
+declare const NON_PATCHABLE_ENTITY_RESOURCE_STATE: unique symbol;
+
+type NonPatchableEntityResourceStateMarker = {
+  [NON_PATCHABLE_ENTITY_RESOURCE_STATE]?: never;
+};
+
+type ReadonlyEntityProps<E extends Entity> = {
+  ids: Signal<EntityId[]>;
+  entityMap: Signal<Record<EntityId, E>>;
+};
+
+type NamedReadonlyEntityProps<E extends Entity, Name extends string> = {
+  [Prop in `${Name}Ids`]: Signal<EntityId[]>;
+} & {
+  [Prop in `${Name}EntityMap`]: Signal<Record<EntityId, E>>;
+};
+
+export type EntityResourceRefResult<Entity> = {
   state: ResourceResult<Entity>['state'] & EntityState<Entity>;
   props: ResourceResult<Entity>['props'] & EntityProps<Entity>;
   methods: ResourceResult<Entity>['methods'];
 };
 
+export type EntityResourceResult<Entity extends { id: EntityId }> = {
+  state: NonPatchableEntityResourceStateMarker;
+  props: ResourceResult<Entity>['props'] &
+    EntityProps<Entity> &
+    ReadonlyEntityProps<Entity>;
+  methods: ResourceResult<Entity>['methods'];
+};
+
 // Generic helpers for inferring entity types and merging unions
 type ArrayElement<T> = T extends readonly (infer E)[] | (infer E)[] ? E : never;
 
@@ -262,20 +393,41 @@ type EntityResourceValue = Entity[] | (Entity[] | undefined);
 
 type TypedEntityResourceValue<E extends Entity> = E[] | (E[] | undefined);
 
-export type EntityDictionary = Record<string, ResourceRef<EntityResourceValue>>;
+export type EntityDictionary = Record<
+  string,
+  ResourceRef<EntityResourceValue> | Resource<EntityResourceValue>
+>;
 
 type MergeNamedEntityStates<T extends EntityDictionary> = MergeUnion<
   {
     [Prop in keyof T]: Prop extends string
-      ? InferEntityFromSignal<T[Prop]['value']> extends infer E
-        ? E extends never
-          ? never
-          : NamedEntityState<E, Prop>
+      ? T[Prop] extends ResourceRef<unknown>
+        ? InferEntityFromSignal<T[Prop]['value']> extends infer E
+          ? E extends never
+            ? never
+            : NamedEntityState<E, Prop>
+          : never
         : never
       : never;
   }[keyof T]
 >;
 
+type MergeNamedReadonlyEntityProps<T extends EntityDictionary> = MergeUnion<
+  {
+    [Prop in keyof T]: Prop extends string
+      ? T[Prop] extends ResourceRef<unknown>
+        ? never
+        : InferEntityFromSignal<T[Prop]['value']> extends infer E
+          ? E extends Entity
+            ? NamedReadonlyEntityProps<E, Prop>
+            : E extends never
+              ? never
+              : never
+          : never
+      : never;
+  }[keyof T]
+>;
+
 type MergeNamedEntityProps<T extends EntityDictionary> = MergeUnion<
   {
     [Prop in keyof T]: Prop extends string
@@ -289,8 +441,12 @@ type MergeNamedEntityProps<T extends EntityDictionary> = MergeUnion<
 >;
 
 export type NamedEntityResourceResult<T extends EntityDictionary> = {
-  state: NamedResourceResult<T, false>['state'] & MergeNamedEntityStates<T>;
-  props: NamedResourceResult<T, false>['props'] & MergeNamedEntityProps<T>;
+  state: NamedResourceResult<T, false>['state'] &
+    MergeNamedEntityStates<T> &
+    NonPatchableEntityResourceStateMarker;
+  props: NamedResourceResult<T, false>['props'] &
+    MergeNamedEntityProps<T> &
+    MergeNamedReadonlyEntityProps<T>;
   methods: NamedResourceResult<T, false>['methods'];
 };
 
@@ -341,6 +497,22 @@ function createEntityDerivations<E extends Entity>(
   return { ids, entityMap };
 }
 
+function createReadonlyEntityDerivations<E extends Entity>(
+  source: Signal<TypedEntityResourceValue<E>>,
+) {
+  const ids = computed(() => (source() ?? []).map((e) => e.id));
+
+  const entityMap = computed(() => {
+    const map = {} as Record<EntityId, E>;
+    for (const item of source() ?? []) {
+      map[item.id] = item as E;
+    }
+    return map;
+  });
+
+  return { ids, entityMap };
+}
+
 function createComputedEntities<E extends Entity>(
   ids: Signal<EntityId[]>,
   entityMap: Signal<Record<EntityId, E>>,
@@ -349,3 +521,31 @@ function createComputedEntities<E extends Entity>(
     return ids().map((id) => entityMap()[id]);
   };
 }
+
+export function isEntityResource(
+  value: unknown,
+): value is Resource<EntityResourceValue> {
+  return (
+    value !== null &&
+    typeof value === 'object' &&
+    'value' in value &&
+    isSignal(value.value) &&
+    'status' in value &&
+    'error' in value &&
+    'isLoading' in value &&
+    'snapshot' in value &&
+    'hasValue' in value
+  );
+}
+
+export function isEntityResourceRef(
+  value: unknown,
+): value is ResourceRef<EntityResourceValue> {
+  return (
+    isEntityResource(value) &&
+    'reload' in value &&
+    'set' in value &&
+    'update' in value &&
+    'asReadonly' in value
+  );
+}
diff --git a/libs/ngrx-toolkit/src/lib/with-resource.spec.ts b/libs/ngrx-toolkit/src/lib/with-resource.spec.ts
index 5958eae0..0a2f41f3 100644
--- a/libs/ngrx-toolkit/src/lib/with-resource.spec.ts
+++ b/libs/ngrx-toolkit/src/lib/with-resource.spec.ts
@@ -16,9 +16,14 @@ import {
 import { of } from 'rxjs';
 import { Assert, AssertNot, IsEqual, Satisfies } from './test-utils/types';
 import { ErrorHandling, mapToResource, withResource } from './with-resource';
+import {
+  stuffExtendedResourceReadable,
+  stuffExtendedResourceWritable,
+} from './with-resource/tests/util/custom-extended-resources';
 import { Address, venice, vienna } from './with-resource/tests/util/fixtures';
 import { paramsForResourceTypes } from './with-resource/tests/util/params-for-resource-types';
 import { setupUnnamedResource } from './with-resource/tests/util/setup-unnamed-resource';
+import { withPreviousValue } from './with-resource/tests/util/snapshot';
 
 describe('withResource', () => {
   describe('standard tests', () => {
@@ -263,6 +268,237 @@ describe('withResource', () => {
         });
       });
 
+      describe('extra properties checks', () => {
+        describe('extra properties go to `props` so they cannot be written to', () => {
+          it('for unnamed writables', async () => {
+            const Store = signalStore(
+              { providedIn: 'root', protectedState: false },
+              withResource(() => stuffExtendedResourceWritable(() => 'a')),
+            );
+
+            const store = TestBed.inject(Store);
+
+            await wait();
+
+            expect(store.stuff()).toBe('a stuff');
+
+            // @ts-expect-error - extra properties should not be patchable
+            patchState(store, { stuff: 'b stuff' });
+          });
+          it('for unnamed readables', async () => {
+            const Store = signalStore(
+              { providedIn: 'root', protectedState: false },
+              withResource(() => stuffExtendedResourceReadable(() => 'a')),
+            );
+
+            const store = TestBed.inject(Store);
+
+            await wait();
+
+            expect(store.stuff()).toBe('a stuff');
+
+            // @ts-expect-error - extra properties should not be patchable
+            patchState(store, { stuff: 'b stuff' });
+          });
+          it('for named readables', async () => {
+            const Store = signalStore(
+              { providedIn: 'root', protectedState: false },
+              withResource(() => ({
+                name: stuffExtendedResourceReadable(() => 'a'),
+              })),
+            );
+
+            const store = TestBed.inject(Store);
+
+            await wait();
+
+            expect(store.nameStuff()).toBe('a stuff');
+
+            // @ts-expect-error - extra properties should not be patchable
+            patchState(store, { nameStuff: 'b stuff' });
+          });
+          it('for named writables', async () => {
+            const Store = signalStore(
+              { providedIn: 'root', protectedState: false },
+              withResource(() => ({
+                name: stuffExtendedResourceWritable(() => 'a'),
+              })),
+            );
+
+            const store = TestBed.inject(Store);
+
+            await wait();
+
+            expect(store.nameStuff()).toBe('a stuff');
+
+            // @ts-expect-error - extra properties should not be patchable
+            patchState(store, { nameStuff: 'b stuff' });
+          });
+        });
+        it('can call custom unnamed writable resource and extract custom extra signal properties', async () => {
+          const Store = signalStore(
+            { providedIn: 'root', protectedState: false },
+            withResource(() => stuffExtendedResourceWritable(() => 'a')),
+          );
+          const store = TestBed.inject(Store);
+
+          await wait();
+
+          expect(store.value()).toBe('a');
+          expect(store.stuff()).toBe('a stuff');
+
+          patchState(store, { value: 'b' });
+
+          expect(store.value()).toBe('b');
+          expect(store.stuff()).toBe('b stuff');
+        });
+        it('can call custom unnamed readable resource and extract custom extra signal properties', async () => {
+          const Store = signalStore(
+            { providedIn: 'root', protectedState: false },
+            withResource(() => stuffExtendedResourceReadable(() => 'a')),
+          );
+          const store = TestBed.inject(Store);
+
+          await wait();
+
+          expect(store.value()).toBe('a');
+          expect(store.stuff()).toBe('a stuff');
+
+          // @ts-expect-error - readable resources should not have their value patchable
+          patchState(store, { value: 'b' });
+
+          expect(store.value()).toBe('a');
+          expect(store.stuff()).toBe('a stuff');
+        });
+        it('can supply custom named resources (writable and unwritable) and extract custom extra signal properties', async () => {
+          const Store = signalStore(
+            { providedIn: 'root', protectedState: false },
+            withResource(() => ({
+              idWritable: stuffExtendedResourceWritable(() => 'a'),
+              idReadable: stuffExtendedResourceReadable(() => 'a'),
+            })),
+          );
+          const store = TestBed.inject(Store);
+
+          await wait();
+
+          expect(store.idWritableValue()).toBe('a');
+          expect(store.idReadableValue()).toBe('a');
+          expect(store.idWritableStuff()).toBe('a stuff');
+          expect(store.idReadableStuff()).toBe('a stuff');
+
+          patchState(store, { idWritableValue: 'b' });
+          // @ts-expect-error - readable resources should not have their value patchable
+          patchState(store, { idReadableValue: 'b' });
+
+          expect(store.idWritableValue()).toBe('b');
+          expect(store.idReadableValue()).toBe('a');
+          expect(store.idWritableStuff()).toBe('b stuff');
+          expect(store.idReadableStuff()).toBe('a stuff');
+        });
+
+        it('can supply custom unnamed (writable and unwritable) and custom named (writable and unwritable) and extract custom extra signal properties', async () => {
+          const UnnamedWritableAndNamedComboStore = signalStore(
+            { providedIn: 'root', protectedState: false },
+            withResource(() => stuffExtendedResourceWritable(() => 'a')),
+            withResource(() => ({
+              idWritable: stuffExtendedResourceWritable(() => 'a'),
+              idReadable: stuffExtendedResourceReadable(() => 'a'),
+            })),
+          );
+          const unnamedWritableAndNamedComboStore = TestBed.inject(
+            UnnamedWritableAndNamedComboStore,
+          );
+
+          await wait();
+
+          expect(unnamedWritableAndNamedComboStore.value()).toBe('a');
+          expect(unnamedWritableAndNamedComboStore.stuff()).toBe('a stuff');
+          expect(unnamedWritableAndNamedComboStore.idWritableValue()).toBe('a');
+          expect(unnamedWritableAndNamedComboStore.idReadableValue()).toBe('a');
+          expect(unnamedWritableAndNamedComboStore.idWritableStuff()).toBe(
+            'a stuff',
+          );
+          expect(unnamedWritableAndNamedComboStore.idReadableStuff()).toBe(
+            'a stuff',
+          );
+
+          patchState(unnamedWritableAndNamedComboStore, {
+            idWritableValue: 'b',
+          });
+          patchState(unnamedWritableAndNamedComboStore, { value: 'b' });
+          patchState(unnamedWritableAndNamedComboStore, {
+            // @ts-expect-error - readable resources should not have their value patchable
+            idReadableValue: 'b',
+          });
+
+          expect(unnamedWritableAndNamedComboStore.value()).toBe('b');
+          expect(unnamedWritableAndNamedComboStore.stuff()).toBe('b stuff');
+          expect(unnamedWritableAndNamedComboStore.idWritableValue()).toBe('b');
+          expect(unnamedWritableAndNamedComboStore.idReadableValue()).toBe('a');
+          expect(unnamedWritableAndNamedComboStore.idWritableStuff()).toBe(
+            'b stuff',
+          );
+          expect(unnamedWritableAndNamedComboStore.idReadableStuff()).toBe(
+            'a stuff',
+          );
+
+          const UnnamedUnwritableAndNamedComboStore = signalStore(
+            { providedIn: 'root', protectedState: false },
+            withResource(() => stuffExtendedResourceReadable(() => 'a')),
+            withResource(() => ({
+              idWritable: stuffExtendedResourceWritable(() => 'a'),
+              idReadable: stuffExtendedResourceReadable(() => 'a'),
+            })),
+          );
+          const unnamedUnwritableAndNamedComboStore = TestBed.inject(
+            UnnamedUnwritableAndNamedComboStore,
+          );
+
+          await wait();
+
+          expect(unnamedUnwritableAndNamedComboStore.value()).toBe('a');
+          expect(unnamedUnwritableAndNamedComboStore.stuff()).toBe('a stuff');
+          expect(unnamedUnwritableAndNamedComboStore.idWritableValue()).toBe(
+            'a',
+          );
+          expect(unnamedUnwritableAndNamedComboStore.idReadableValue()).toBe(
+            'a',
+          );
+          expect(unnamedUnwritableAndNamedComboStore.idWritableStuff()).toBe(
+            'a stuff',
+          );
+          expect(unnamedUnwritableAndNamedComboStore.idReadableStuff()).toBe(
+            'a stuff',
+          );
+
+          patchState(unnamedUnwritableAndNamedComboStore, {
+            idWritableValue: 'b',
+          });
+          // @ts-expect-error - readable resources should not have their value patchable
+          patchState(unnamedUnwritableAndNamedComboStore, { value: 'b' });
+          patchState(unnamedUnwritableAndNamedComboStore, {
+            // @ts-expect-error - readable resources should not have their value patchable
+            idReadableValue: 'b',
+          });
+
+          expect(unnamedUnwritableAndNamedComboStore.value()).toBe('a');
+          expect(unnamedUnwritableAndNamedComboStore.stuff()).toBe('a stuff');
+          expect(unnamedUnwritableAndNamedComboStore.idWritableValue()).toBe(
+            'b',
+          );
+          expect(unnamedUnwritableAndNamedComboStore.idReadableValue()).toBe(
+            'a',
+          );
+          expect(unnamedUnwritableAndNamedComboStore.idWritableStuff()).toBe(
+            'b stuff',
+          );
+          expect(unnamedUnwritableAndNamedComboStore.idReadableStuff()).toBe(
+            'a stuff',
+          );
+        });
+      });
+
       describe('override protection', () => {
         const warningSpy = jest.spyOn(console, 'warn');
 
@@ -312,6 +548,33 @@ describe('withResource', () => {
             'userValue',
           );
         });
+
+        //TODO wait for https://github.com/ngrx/platform/pull/4932 and then add 'value' to the list
+        it.each([
+          'status',
+          'error',
+          'isLoading',
+          '_reload',
+          'hasValue',
+          'stuff',
+        ])(
+          `warns if %s is not a member of the store with a custom extended resource`,
+          (memberName) => {
+            const Store = signalStore(
+              { providedIn: 'root' },
+              withProps(() => ({ [memberName]: true })),
+              withResource(() => stuffExtendedResourceWritable(() => 'a')),
+            );
+
+            TestBed.inject(Store);
+
+            expect(warningSpy).toHaveBeenCalledWith(
+              '@ngrx/signals: SignalStore members cannot be overridden.',
+              'Trying to override:',
+              memberName,
+            );
+          },
+        );
       });
 
       it('works also with list/detail use case', async () => {
@@ -319,12 +582,14 @@ describe('withResource', () => {
           { providedIn: 'root', protectedState: false },
           withState({ id: undefined as number | undefined }),
           withResource(({ id }) => ({
-            list: httpResource<{ id: number; name: string }[]>(
-              () => '/address',
+            list: httpResource<
               {
-                defaultValue: [],
-              },
-            ),
+                id: number;
+                name: string;
+              }[]
+            >(() => '/address', {
+              defaultValue: [],
+            }),
             detail: httpResource<Address>(() =>
               id() ? `/address/${id()}` : undefined,
             ),
@@ -609,6 +874,77 @@ describe('withResource', () => {
         IsEqual<typeof _store.digitValue, Signal<number | undefined>>
       >;
     });
+    it('only exposes reload methods for reloadable resources', () => {
+      const Store = signalStore(
+        { providedIn: 'root' },
+        withResource(() => ({
+          digit: resource({
+            loader: () => Promise.resolve(-1),
+            defaultValue: 0,
+          }),
+          digitSnapshotted: withPreviousValue(
+            resource({
+              loader: () => Promise.resolve(-1),
+              defaultValue: 0,
+            }),
+          ),
+        })),
+        withResource(() =>
+          resource({
+            loader: () => Promise.resolve(-1),
+            defaultValue: 0,
+          }),
+        ),
+        withMethods((store) => ({
+          namedReload: () => store._digitReload(),
+          unnamedReload: () => store._reload(),
+          // @ts-expect-error - a snapshot should not have a reload
+          invalidReload: () => store._digitSnapshottedReload(),
+        })),
+      );
+
+      const _store = TestBed.inject(Store);
+
+      type _T1 = Assert<IsEqual<typeof _store.namedReload, () => boolean>>;
+      type _T2 = Assert<IsEqual<typeof _store.unnamedReload, () => boolean>>;
+    });
+
+    describe('patchState restrictions do not allow patching', () => {
+      it('an unnamed non-reloadable resource value', () => {
+        signalStore(
+          withResource(() =>
+            withPreviousValue(
+              resource({
+                loader: () => Promise.resolve(1),
+                defaultValue: 0,
+              }),
+            ),
+          ),
+          withMethods((store) => ({
+            // @ts-expect-error - non-reloadable Resource values are not state
+            setValue: (value: number) => patchState(store, { value }),
+          })),
+        );
+      });
+
+      it('a named non-reloadable resource value', () => {
+        signalStore(
+          withResource(() => ({
+            digitSnapshotted: withPreviousValue(
+              resource({
+                loader: () => Promise.resolve(-1),
+                defaultValue: 0,
+              }),
+            ),
+          })),
+          withMethods((store) => ({
+            setNamedValue: (value: number) =>
+              // @ts-expect-error digitSnapshotted is a `Resource` value, but not state, so it should not be patchable
+              patchState(store, { digitSnapshottedValue: value }),
+          })),
+        );
+      });
+    });
 
     describe('mapToResource', () => {
       it('satisfies the Resource interface without default value', () => {
diff --git a/libs/ngrx-toolkit/src/lib/with-resource.ts b/libs/ngrx-toolkit/src/lib/with-resource.ts
index 5251935f..c7456308 100644
--- a/libs/ngrx-toolkit/src/lib/with-resource.ts
+++ b/libs/ngrx-toolkit/src/lib/with-resource.ts
@@ -1,9 +1,11 @@
 //** Types for `withResource` */
 
+import { HttpResourceRef } from '@angular/common/http';
 import {
   isSignal,
   Resource,
   ResourceRef,
+  ResourceSnapshot,
   ResourceStatus,
   Signal,
   untracked,
@@ -25,6 +27,19 @@ export type ResourceResult<T> = {
     status: Signal<ResourceStatus>;
     error: Signal<Error | undefined>;
     isLoading: Signal<boolean>;
+    snapshot: Signal<ResourceSnapshot<T>>;
+  };
+  methods: {
+    hasValue(): this is Resource<Exclude<T, undefined>>;
+  };
+};
+export type ResourceRefResult<T> = {
+  state: { value: T };
+  props: {
+    status: Signal<ResourceStatus>;
+    error: Signal<Error | undefined>;
+    isLoading: Signal<boolean>;
+    snapshot: Signal<ResourceSnapshot<T>>;
   };
   methods: {
     hasValue(): this is Resource<Exclude<T, undefined>>;
@@ -32,33 +47,136 @@ export type ResourceResult<T> = {
   };
 };
 
-export type ResourceDictionary = Record<string, ResourceRef<unknown>>;
+type ReloadableResource<T> = ResourceRef<T> | HttpResourceRef<T>;
+
+type ResourceCoreKeys =
+  | 'value'
+  | 'status'
+  | 'error'
+  | 'isLoading'
+  | 'snapshot'
+  | 'hasValue';
+
+type AdditionalSignalProps<T extends Resource<unknown>> = {
+  [Prop in keyof T as Prop extends ResourceCoreKeys
+    ? never
+    : T[Prop] extends Signal<unknown>
+      ? Prop
+      : never]: T[Prop];
+};
+
+type InferResourceValue<T extends Resource<unknown>> =
+  T['value'] extends Signal<infer S> ? S : never;
+
+type ConditionalReloadMethod<T extends Resource<unknown>> =
+  T extends ReloadableResource<unknown>
+    ? { _reload(): boolean }
+    : Record<never, never>;
+
+declare const NON_PATCHABLE_RESOURCE_STATE: unique symbol;
+
+type NonPatchableResourceStateMarker = {
+  [NON_PATCHABLE_RESOURCE_STATE]?: never;
+};
+
+type ResourceValueType<
+  T extends Resource<unknown>,
+  HasUndefinedErrorHandling extends boolean,
+> = HasUndefinedErrorHandling extends true
+  ? InferResourceValue<T> | undefined
+  : InferResourceValue<T>;
+
+type UnnamedResourceResult<
+  T extends Resource<unknown>,
+  HasUndefinedErrorHandling extends boolean,
+> = {
+  state: T extends ReloadableResource<unknown>
+    ? {
+        value: ResourceValueType<T, HasUndefinedErrorHandling>;
+      }
+    : NonPatchableResourceStateMarker;
+  props: (T extends ReloadableResource<unknown>
+    ? Record<never, never>
+    : {
+        value: Signal<ResourceValueType<T, HasUndefinedErrorHandling>>;
+      }) & {
+    status: Signal<ResourceStatus>;
+    error: Signal<Error | undefined>;
+    isLoading: Signal<boolean>;
+    snapshot: Signal<ResourceSnapshot<InferResourceValue<T>>>;
+  } & AdditionalSignalProps<T>;
+  methods: {
+    hasValue(): this is Resource<Exclude<InferResourceValue<T>, undefined>>;
+  } & ConditionalReloadMethod<T>;
+};
+
+export type ResourceDictionary = Record<string, Resource<unknown>>;
+
+// Without this, only one resource would be able to have its additional signal props extracted
+// When there are two or more named resources,
+//     neither additional property can be indexed for certain,
+//     because it would be a union of the two's additional properties,
+//     and TS cannot pick the correct one when indexing into it.
+//     So there would be no resolution of a particular resource's additional property.
+// This type util makes this type mapping an intersection, so all additional properties
+//     of all resources are preserved, but also can be indexed for a particular resource.
+// https://stackoverflow.com/a/50375286 explanation, with relevant TS doc links
+type UnionToIntersection<T> = (
+  T extends unknown ? (arg: T) => void : never
+) extends (arg: infer R) => void
+  ? R
+  : Record<never, never>;
+
+type NamedAdditionalSignalProps<T extends ResourceDictionary> =
+  UnionToIntersection<
+    {
+      [ResourceName in keyof T & string]: {
+        [Prop in keyof AdditionalSignalProps<T[ResourceName]> &
+          string as `${ResourceName}${Capitalize<Prop>}`]: AdditionalSignalProps<
+          T[ResourceName]
+        >[Prop];
+      };
+    }[keyof T & string]
+  >;
 
 export type NamedResourceResult<
   T extends ResourceDictionary,
   HasUndefinedErrorHandling extends boolean,
 > = {
   state: {
-    [Prop in keyof T as `${Prop &
-      string}Value`]: T[Prop]['value'] extends Signal<infer S>
-      ? HasUndefinedErrorHandling extends true
-        ? S | undefined
-        : S
+    [Prop in keyof T as T[Prop] extends ReloadableResource<unknown>
+      ? `${Prop & string}Value`
+      : never]: T[Prop] extends Resource<unknown>
+      ? ResourceValueType<T[Prop], HasUndefinedErrorHandling>
       : never;
-  };
+  } & NonPatchableResourceStateMarker;
   props: {
+    [Prop in keyof T as T[Prop] extends ReloadableResource<unknown>
+      ? never
+      : `${Prop & string}Value`]: Signal<
+      T[Prop] extends Resource<unknown>
+        ? ResourceValueType<T[Prop], HasUndefinedErrorHandling>
+        : never
+    >;
+  } & {
     [Prop in keyof T as `${Prop & string}Status`]: Signal<ResourceStatus>;
   } & {
     [Prop in keyof T as `${Prop & string}Error`]: Signal<Error | undefined>;
   } & {
     [Prop in keyof T as `${Prop & string}IsLoading`]: Signal<boolean>;
-  };
+  } & {
+    [Prop in keyof T as `${Prop & string}Snapshot`]: Signal<
+      ResourceSnapshot<T[Prop]['value'] extends Signal<infer S> ? S : never>
+    >;
+  } & NamedAdditionalSignalProps<T>;
   methods: {
     [Prop in keyof T as `${Prop & string}HasValue`]: () => this is Resource<
-      Exclude<T[Prop]['value'], undefined>
+      Exclude<InferResourceValue<T[Prop]>, undefined>
     >;
   } & {
-    [Prop in keyof T as `_${Prop & string}Reload`]: () => boolean;
+    [Prop in keyof T as T[Prop] extends ReloadableResource<unknown>
+      ? `_${Prop & string}Reload`
+      : never]: () => boolean;
   };
 };
 
@@ -81,10 +199,13 @@ const defaultOptions: Required<ResourceOptions> = {
  * Integrates a `Resource` into the SignalStore and makes the store instance
  * implement the `Resource` interface.
  *
- * The resource's value is stored under the `value` key in the state
- * and is exposed as a `DeepSignal`.
+ * Reloadable resources (`ResourceRef`/`HttpResourceRef`) expose their
+ * value under `value` in the store state and can be updated via `patchState`.
  *
- * It can also be updated via `patchState`.
+ * Plain `Resource` values are exposed as signals on the store instance,
+ * but are not part of state and therefore cannot be changed via `patchState`.
+ * Additional signal members on the resource (for example `foo`) are also
+ * exposed on the store as props.
  *
  * @usageNotes
  *
@@ -108,32 +229,32 @@ const defaultOptions: Required<ResourceOptions> = {
  */
 export function withResource<
   Input extends SignalStoreFeatureResult,
-  ResourceValue,
+  ResourceType extends Resource<unknown>,
 >(
   resourceFactory: (
     store: Input['props'] & Input['methods'] & StateSignals<Input['state']>,
-  ) => ResourceRef<ResourceValue>,
-): SignalStoreFeature<Input, ResourceResult<ResourceValue | undefined>>;
+  ) => ResourceType,
+): SignalStoreFeature<Input, UnnamedResourceResult<ResourceType, true>>;
 
 export function withResource<
   Input extends SignalStoreFeatureResult,
-  ResourceValue,
+  ResourceType extends Resource<unknown>,
 >(
   resourceFactory: (
     store: Input['props'] & Input['methods'] & StateSignals<Input['state']>,
-  ) => ResourceRef<ResourceValue>,
+  ) => ResourceType,
   resourceOptions: { errorHandling: 'undefined value' },
-): SignalStoreFeature<Input, ResourceResult<ResourceValue | undefined>>;
+): SignalStoreFeature<Input, UnnamedResourceResult<ResourceType, true>>;
 
 export function withResource<
   Input extends SignalStoreFeatureResult,
-  ResourceValue,
+  ResourceType extends Resource<unknown>,
 >(
   resourceFactory: (
     store: Input['props'] & Input['methods'] & StateSignals<Input['state']>,
-  ) => ResourceRef<ResourceValue>,
+  ) => ResourceType,
   resourceOptions?: ResourceOptions,
-): SignalStoreFeature<Input, ResourceResult<ResourceValue>>;
+): SignalStoreFeature<Input, UnnamedResourceResult<ResourceType, false>>;
 
 /**
  * @experimental
@@ -143,9 +264,13 @@ export function withResource<
  * registered by name, which is used as a prefix when spreading the members
  * of `Resource` onto the store.
  *
- * Each resource’s value is part of the state, stored under the `value` key
- * with the resource name as prefix. Values are exposed as `DeepSignal`s and
- * can be updated via `patchState`.
+ * Reloadable resources (`ResourceRef`/`HttpResourceRef`) place their values
+ * in state using `<name>Value` keys and support updates via `patchState`.
+ *
+ * Plain `Resource` values are exposed as read-only signals with `<name>Value`
+ * but are not stored in state.
+ * Additional signal members are exposed as read-only props using
+ * `<name><CapitalizedMember>`.
  *
  * @usageNotes
  *
@@ -166,7 +291,7 @@ export function withResource<
  * ```
  *
  * @param resourceFactory A factory function that receives the store's props,
- * methods, and state signals. It must return a `Record<string, ResourceRef>`.
+ * methods, and state signals. It must return a `Record<string, Resource>`.
  * @param resourceOptions Allows to configure the error handling behavior.
  */
 export function withResource<
@@ -204,7 +329,7 @@ export function withResource<
 >(
   resourceFactory: (
     store: Input['props'] & Input['methods'] & StateSignals<Input['state']>,
-  ) => ResourceRef<ResourceValue> | ResourceDictionary,
+  ) => Resource<ResourceValue> | ResourceDictionary,
   resourceOptions?: ResourceOptions,
 ): SignalStoreFeature<Input> {
   const options: Required<ResourceOptions> = {
@@ -218,7 +343,10 @@ export function withResource<
       ...store.methods,
     });
 
-    if (isResourceRef(resourceOrDictionary)) {
+    if (
+      isResourceRef(resourceOrDictionary) ||
+      isResource(resourceOrDictionary)
+    ) {
       return createUnnamedResource(
         resourceOrDictionary,
         options.errorHandling,
@@ -233,26 +361,44 @@ export function withResource<
 }
 
 function createUnnamedResource<ResourceValue>(
-  resource: ResourceRef<ResourceValue>,
+  resource: Resource<ResourceValue>,
   errorHandling: ErrorHandling,
 ) {
   function hasValue(): this is Resource<Exclude<ResourceValue, undefined>> {
-    return resource.hasValue();
+    if (isResourceRef(resource)) {
+      return resource.hasValue();
+    } else {
+      return resource.hasValue();
+    }
+  }
+
+  const metadataProps = {
+    status: resource.status,
+    error: resource.error,
+    isLoading: resource.isLoading,
+    snapshot: resource.snapshot,
+    ...extractAdditionalSignalProps(resource),
+  };
+
+  if (isResourceRef(resource)) {
+    return signalStoreFeature(
+      withLinkedState(() => ({
+        value: valueSignalForErrorHandling(resource, errorHandling),
+      })),
+      withProps(() => metadataProps),
+      withMethods(() => ({
+        hasValue,
+        _reload: () => resource.reload(),
+      })),
+    );
   }
 
   return signalStoreFeature(
-    withLinkedState(() => ({
-      value: valueSignalForErrorHandling(resource, errorHandling),
-    })),
     withProps(() => ({
-      status: resource.status,
-      error: resource.error,
-      isLoading: resource.isLoading,
-    })),
-    withMethods(() => ({
-      hasValue,
-      _reload: () => resource.reload(),
+      value: valueSignalForErrorHandling(resource, errorHandling),
+      ...metadataProps,
     })),
+    withMethods(() => ({ hasValue })),
   );
 }
 
@@ -262,37 +408,42 @@ function createNamedResource<Dictionary extends ResourceDictionary>(
 ) {
   const keys = Object.keys(dictionary);
 
-  const state: Record<string, WritableSignal<unknown>> = keys.reduce(
-    (state, resourceName) => ({
-      ...state,
-      [`${resourceName}Value`]: valueSignalForErrorHandling(
-        dictionary[resourceName],
+  const state: Record<string, WritableSignal<unknown>> = {};
+  const props: Record<string, Signal<unknown>> = {};
+  const methods: Record<string, () => boolean> = {};
+
+  for (const resourceName of keys) {
+    const res = dictionary[resourceName];
+
+    props[`${resourceName}Status`] = res.status;
+    props[`${resourceName}Error`] = res.error;
+    props[`${resourceName}IsLoading`] = res.isLoading;
+    props[`${resourceName}Snapshot`] = res.snapshot;
+    assignPrefixedProps(props, resourceName, extractAdditionalSignalProps(res));
+    methods[`${resourceName}HasValue`] = isResourceRef(res)
+      ? () => res.hasValue()
+      : () => res.hasValue();
+
+    if (isResourceRef(res)) {
+      state[`${resourceName}Value`] = valueSignalForErrorHandling(
+        res,
         errorHandling,
-      ),
-    }),
-    {},
-  );
-
-  const props: Record<string, Signal<unknown>> = keys.reduce(
-    (props, resourceName) => ({
-      ...props,
-      [`${resourceName}Status`]: dictionary[resourceName].status,
-      [`${resourceName}Error`]: dictionary[resourceName].error,
-      [`${resourceName}IsLoading`]: dictionary[resourceName].isLoading,
-    }),
-    {},
-  );
+      ) as WritableSignal<unknown>;
+      methods[`_${resourceName}Reload`] = () => res.reload();
+    } else {
+      props[`${resourceName}Value`] = valueSignalForErrorHandling(
+        res,
+        errorHandling,
+      );
+    }
+  }
 
-  const methods: Record<string, () => boolean> = keys.reduce(
-    (methods, resourceName) => {
-      return {
-        ...methods,
-        [`${resourceName}HasValue`]: () => dictionary[resourceName].hasValue(),
-        [`_${resourceName}Reload`]: () => dictionary[resourceName].reload(),
-      };
-    },
-    {},
-  );
+  if (Object.keys(state).length === 0) {
+    return signalStoreFeature(
+      withProps(() => props),
+      withMethods(() => methods),
+    );
+  }
 
   return signalStoreFeature(
     withLinkedState(() => state),
@@ -301,7 +452,7 @@ function createNamedResource<Dictionary extends ResourceDictionary>(
   );
 }
 
-export function isResourceRef(value: unknown): value is ResourceRef<unknown> {
+export function isResource(value: unknown): value is Resource<unknown> {
   return (
     value !== null &&
     typeof value === 'object' &&
@@ -310,11 +461,81 @@ export function isResourceRef(value: unknown): value is ResourceRef<unknown> {
     'status' in value &&
     'error' in value &&
     'isLoading' in value &&
-    'hasValue' in value &&
-    'reload' in value
+    'snapshot' in value &&
+    'hasValue' in value
+  );
+}
+
+export function isResourceRef(value: unknown): value is ResourceRef<unknown> {
+  return (
+    isResource(value) &&
+    'reload' in value &&
+    'set' in value &&
+    'update' in value &&
+    'asReadonly' in value
   );
 }
 
+function extractAdditionalSignalProps(
+  resource: Resource<unknown>,
+): Record<string, Signal<unknown>> {
+  const additionalSignals: Record<string, Signal<unknown>> = {};
+
+  for (const key of Object.keys(resource)) {
+    if (isResourceCoreKey(key)) {
+      continue;
+    }
+
+    const candidate = (resource as unknown as Record<string, unknown>)[key];
+    if (isSignal(candidate)) {
+      additionalSignals[key] = candidate;
+    }
+  }
+
+  return additionalSignals;
+}
+
+function isResourceCoreKey(key: string): key is ResourceCoreKeys {
+  return (
+    key === 'value' ||
+    key === 'status' ||
+    key === 'error' ||
+    key === 'isLoading' ||
+    key === 'snapshot' ||
+    key === 'hasValue'
+  );
+}
+
+function assignPrefixedProps(
+  target: Record<string, Signal<unknown>>,
+  resourceName: string,
+  source: Record<string, Signal<unknown>>,
+): void {
+  for (const key of Object.keys(source)) {
+    target[`${resourceName}${capitalizeKey(key)}`] = source[key];
+  }
+}
+
+function capitalizeKey(value: string): string {
+  if (value.length === 0) {
+    return value;
+  }
+
+  return value.charAt(0).toUpperCase() + value.slice(1);
+}
+
+// This may be handy in the future
+// export function isHttpResourceRef(
+//   value: unknown,
+// ): value is HttpResourceRef<unknown> {
+//   return (
+//     isResourceRef(value) &&
+//     'headers' in value &&
+//     'statusCode' in value &&
+//     'progress' in value
+//   );
+// }
+
 //** Types for `mapToResource` */
 
 type NamedResource<Name extends string, T> = {
@@ -327,6 +548,8 @@ type NamedResource<Name extends string, T> = {
   [Prop in `${Name}IsLoading`]: Signal<boolean>;
 } & {
   [Prop in `${Name}HasValue`]: () => boolean;
+} & {
+  [Prop in `${Name}Snapshot`]: Signal<ResourceSnapshot<T>>;
 };
 
 type IsValidResourceName<
@@ -375,7 +598,7 @@ type MappedResource<
  *
  * @param store The store instance to map the resource to.
  * @param name The name of the resource to map.
- * @returns `ResourceRef<T>`
+ * @returns `Resource<T>`
  */
 export function mapToResource<
   Name extends ResourceNames<Store>,
@@ -394,6 +617,7 @@ export function mapToResource<
     status: store[`${resourceName}Status`],
     error: store[`${resourceName}Error`],
     isLoading: store[`${resourceName}IsLoading`],
+    snapshot: store[`${resourceName}Snapshot`],
     hasValue,
   } as MappedResource<Store, Name>;
 }
@@ -464,19 +688,19 @@ export function mapToResource<
  * a breaking change.
  */
 function valueSignalForErrorHandling<T>(
-  res: ResourceRef<T>,
+  res: Resource<T>,
   errorHandling: 'undefined value',
-): WritableSignal<T | undefined>;
+): Signal<T | undefined>;
 
 function valueSignalForErrorHandling<T>(
-  res: ResourceRef<T>,
+  res: Resource<T>,
   errorHandling: ErrorHandling,
-): WritableSignal<T>;
+): Signal<T>;
 
 function valueSignalForErrorHandling<T>(
-  res: ResourceRef<T>,
+  res: Resource<T>,
   errorHandling: ErrorHandling,
-): WritableSignal<T | undefined> {
+): Signal<T | undefined> {
   const originalSignal = res.value;
 
   switch (errorHandling) {
diff --git a/libs/ngrx-toolkit/src/lib/with-resource/tests/util/custom-extended-resources.ts b/libs/ngrx-toolkit/src/lib/with-resource/tests/util/custom-extended-resources.ts
new file mode 100644
index 00000000..469991b3
--- /dev/null
+++ b/libs/ngrx-toolkit/src/lib/with-resource/tests/util/custom-extended-resources.ts
@@ -0,0 +1,54 @@
+import { computed, Resource, ResourceRef, Signal } from '@angular/core';
+import { rxResource } from '@angular/core/rxjs-interop';
+import { of } from 'rxjs';
+
+export function stuffExtendedResourceWritable(
+  params?: () => string | undefined,
+): ResourceRef<string | undefined> & { stuff: Signal<string> } {
+  const resource = rxResource({
+    params: () => params?.() ?? '',
+    stream: ({ params }) => {
+      return of<string>(params);
+    },
+  });
+
+  const stuff = computed(() => resource.value() + ' stuff');
+
+  return {
+    stuff,
+    value: resource.value,
+    status: resource.status,
+    error: resource.error,
+    isLoading: resource.isLoading,
+    snapshot: resource.snapshot,
+    hasValue: resource.hasValue,
+    set: resource.set.bind(resource),
+    update: resource.update.bind(resource),
+    asReadonly: resource.asReadonly.bind(resource),
+    reload: resource.reload.bind(resource),
+    destroy: resource.destroy.bind(resource),
+  };
+}
+
+export function stuffExtendedResourceReadable(
+  params?: () => string | undefined,
+): Resource<string | undefined> & { stuff: Signal<string> } {
+  const resource = rxResource({
+    params: () => params?.() ?? '',
+    stream: ({ params }) => {
+      return of<string>(params);
+    },
+  }).asReadonly();
+
+  const stuff = computed(() => resource.value() + ' stuff');
+
+  return {
+    stuff,
+    value: resource.value,
+    status: resource.status,
+    error: resource.error,
+    isLoading: resource.isLoading,
+    snapshot: resource.snapshot,
+    hasValue: resource.hasValue.bind(resource),
+  };
+}
diff --git a/libs/ngrx-toolkit/src/lib/with-resource/tests/util/resource-test-adapter.ts b/libs/ngrx-toolkit/src/lib/with-resource/tests/util/resource-test-adapter.ts
index d0cc9457..f874c9bb 100644
--- a/libs/ngrx-toolkit/src/lib/with-resource/tests/util/resource-test-adapter.ts
+++ b/libs/ngrx-toolkit/src/lib/with-resource/tests/util/resource-test-adapter.ts
@@ -12,5 +12,8 @@ export type ResourceTestAdapter = {
     isLoading: boolean;
     hasValue: boolean;
   };
+};
+
+export type ReloadableResourceTestAdapter = ResourceTestAdapter & {
   reload: () => void;
 };
diff --git a/libs/ngrx-toolkit/src/lib/with-resource/tests/util/setup-mapped-resource.ts b/libs/ngrx-toolkit/src/lib/with-resource/tests/util/setup-mapped-resource.ts
index 6f0af070..bc015ba5 100644
--- a/libs/ngrx-toolkit/src/lib/with-resource/tests/util/setup-mapped-resource.ts
+++ b/libs/ngrx-toolkit/src/lib/with-resource/tests/util/setup-mapped-resource.ts
@@ -9,7 +9,7 @@ import { setupNamedResource } from './setup-named-resource';
 export function setupMappedResource(
   errorHandling: ErrorHandling,
 ): ResourceTestAdapter {
-  const { addressResolver, setId, setValue, reload, store } =
+  const { addressResolver, setId, setValue, store } =
     setupNamedResource(errorHandling);
 
   const resource = mapToResource(
@@ -28,6 +28,5 @@ export function setupMappedResource(
       isLoading: resource.isLoading(),
       hasValue: resource.hasValue(),
     }),
-    reload,
   };
 }
diff --git a/libs/ngrx-toolkit/src/lib/with-resource/tests/util/setup-named-resource.ts b/libs/ngrx-toolkit/src/lib/with-resource/tests/util/setup-named-resource.ts
index 2dc4a969..ca5f1858 100644
--- a/libs/ngrx-toolkit/src/lib/with-resource/tests/util/setup-named-resource.ts
+++ b/libs/ngrx-toolkit/src/lib/with-resource/tests/util/setup-named-resource.ts
@@ -1,6 +1,6 @@
 import { inject, resource } from '@angular/core';
 import { TestBed } from '@angular/core/testing';
-import { patchState, signalStore, withMethods, withState } from '@ngrx/signals';
+import { patchState, signalStore, withState } from '@ngrx/signals';
 import { ErrorHandling, withResource } from '../../../with-resource';
 import { Address, AddressResolver, venice } from './fixtures';
 import { ResourceTestAdapter } from './resource-test-adapter';
@@ -27,7 +27,6 @@ export function setupNamedResource(
       },
       { errorHandling },
     ),
-    withMethods((store) => ({ reload: () => store._addressReload() })),
   );
 
   TestBed.configureTestingModule({
@@ -54,6 +53,5 @@ export function setupNamedResource(
       isLoading: store.addressIsLoading(),
       hasValue: store.addressHasValue(),
     }),
-    reload: () => store.reload(),
   };
 }
diff --git a/libs/ngrx-toolkit/src/lib/with-resource/tests/util/setup-unnamed-resource.ts b/libs/ngrx-toolkit/src/lib/with-resource/tests/util/setup-unnamed-resource.ts
index 0939d10d..c3b075cb 100644
--- a/libs/ngrx-toolkit/src/lib/with-resource/tests/util/setup-unnamed-resource.ts
+++ b/libs/ngrx-toolkit/src/lib/with-resource/tests/util/setup-unnamed-resource.ts
@@ -3,11 +3,11 @@ import { TestBed } from '@angular/core/testing';
 import { patchState, signalStore, withMethods, withState } from '@ngrx/signals';
 import { ErrorHandling, withResource } from '../../../with-resource';
 import { Address, AddressResolver, venice } from './fixtures';
-import { ResourceTestAdapter } from './resource-test-adapter';
+import { ReloadableResourceTestAdapter } from './resource-test-adapter';
 
 export function setupUnnamedResource(
   errorHandling?: ErrorHandling,
-): ResourceTestAdapter {
+): ReloadableResourceTestAdapter {
   const addressResolver = {
     resolve: jest.fn(() => Promise.resolve(venice)),
   };
diff --git a/libs/ngrx-toolkit/src/lib/with-resource/tests/util/snapshot.ts b/libs/ngrx-toolkit/src/lib/with-resource/tests/util/snapshot.ts
new file mode 100644
index 00000000..57829184
--- /dev/null
+++ b/libs/ngrx-toolkit/src/lib/with-resource/tests/util/snapshot.ts
@@ -0,0 +1,26 @@
+import {
+  linkedSignal,
+  Resource,
+  resourceFromSnapshots,
+  ResourceSnapshot,
+} from '@angular/core';
+
+export function withPreviousValue<T>(input: Resource<T>): Resource<T> {
+  const derived = linkedSignal<ResourceSnapshot<T>, ResourceSnapshot<T>>({
+    source: input.snapshot,
+    computation: (snap, previous) => {
+      if (
+        snap.status === 'loading' &&
+        previous &&
+        previous.value.status !== 'error'
+      ) {
+        // When the input resource enters loading state, we keep the value
+        // from its previous state, if any.
+        return { status: 'loading' as const, value: previous.value.value };
+      }
+      // Otherwise we simply forward the state of the input resource.
+      return snap;
+    },
+  });
+  return resourceFromSnapshots(derived);
+}