diff --git a/.changeset/light-rings-trade.md b/.changeset/light-rings-trade.md
new file mode 100644
index 000000000000..881fd8fcd882
--- /dev/null
+++ b/.changeset/light-rings-trade.md
@@ -0,0 +1,5 @@
+---
+'create-svelte': patch
+---
+
+Enhance docs on importing types in app.d.ts
diff --git a/packages/create-svelte/templates/default/src/app.d.ts b/packages/create-svelte/templates/default/src/app.d.ts
index 57a57919760d..9ca010a6dc91 100644
--- a/packages/create-svelte/templates/default/src/app.d.ts
+++ b/packages/create-svelte/templates/default/src/app.d.ts
@@ -2,6 +2,7 @@
 
 // See https://kit.svelte.dev/docs/types#app
 // for information about these interfaces
+// and what to do when importing types
 declare namespace App {
 	interface Locals {
 		userid: string;
diff --git a/packages/create-svelte/templates/skeleton/src/app.d.ts b/packages/create-svelte/templates/skeleton/src/app.d.ts
index 121720c58d19..b28d8405630d 100644
--- a/packages/create-svelte/templates/skeleton/src/app.d.ts
+++ b/packages/create-svelte/templates/skeleton/src/app.d.ts
@@ -2,6 +2,7 @@
 
 // See https://kit.svelte.dev/docs/types#app
 // for information about these interfaces
+// and what to do when importing types
 declare namespace App {
 	// interface Locals {}
 	// interface Platform {}
diff --git a/packages/kit/types/ambient.d.ts b/packages/kit/types/ambient.d.ts
index 8793db0cd3d7..13713c3e6b51 100644
--- a/packages/kit/types/ambient.d.ts
+++ b/packages/kit/types/ambient.d.ts
@@ -17,13 +17,29 @@
  *
  * By populating these interfaces, you will gain type safety when using `event.locals`, `event.platform`, `session` and `stuff`.
  *
- * Note that since it's an ambient declaration file, you can't use `import` statements — instead, use the `import(...)` function:
+ * Note that since it's an ambient declaration file, you have to be careful when using `import` statements. Once you add an `import`
+ * at the top level, the declaration file is no longer considered ambient and you lose access to these typings in other files.
+ * To avoid this, either use the `import(...)` function:
  *
  * ```ts
  * interface Locals {
  * 	user: import('$lib/types').User;
  * }
  * ```
+ * Or wrap the namespace with `declare global`:
+ * ```ts
+ * import { User } from '$lib/types';
+ *
+ * declare global {
+ * 	namespace App {
+ * 		interface Locals {
+ * 			user: User;
+ * 		}
+ * 		// ...
+ * 	}
+ * }
+ * ```
+ *
  */
 declare namespace App {
 	/**