diff --git a/.changeset/light-spiders-type.md b/.changeset/light-spiders-type.md
new file mode 100644
index 000000000000..125bbc4dbc3a
--- /dev/null
+++ b/.changeset/light-spiders-type.md
@@ -0,0 +1,5 @@
+---
+'@sveltejs/kit': patch
+---
+
+Co-locate synthetic types with other Kit types
diff --git a/packages/kit/src/core/sync/write_ambient.js b/packages/kit/src/core/sync/write_ambient.js
index 025a1e035d45..cd0c5442f24c 100644
--- a/packages/kit/src/core/sync/write_ambient.js
+++ b/packages/kit/src/core/sync/write_ambient.js
@@ -8,9 +8,7 @@ import { fileURLToPath } from 'url';
 
 // TODO these types should be described in a neutral place, rather than
 // inside either `packages/kit` or `kit.svelte.dev`
-const descriptions_dir = fileURLToPath(
-	new URL('../../../../../sites/kit.svelte.dev/scripts/types/special-types', import.meta.url)
-);
+const descriptions_dir = fileURLToPath(new URL('../../../types/synthetic', import.meta.url));
 
 /** @param {string} filename */
 function read_description(filename) {
diff --git a/sites/kit.svelte.dev/scripts/types/special-types/$env+dynamic+private.md b/packages/kit/types/synthetic/$env+dynamic+private.md
similarity index 100%
rename from sites/kit.svelte.dev/scripts/types/special-types/$env+dynamic+private.md
rename to packages/kit/types/synthetic/$env+dynamic+private.md
diff --git a/sites/kit.svelte.dev/scripts/types/special-types/$env+dynamic+public.md b/packages/kit/types/synthetic/$env+dynamic+public.md
similarity index 100%
rename from sites/kit.svelte.dev/scripts/types/special-types/$env+dynamic+public.md
rename to packages/kit/types/synthetic/$env+dynamic+public.md
diff --git a/sites/kit.svelte.dev/scripts/types/special-types/$env+static+private.md b/packages/kit/types/synthetic/$env+static+private.md
similarity index 100%
rename from sites/kit.svelte.dev/scripts/types/special-types/$env+static+private.md
rename to packages/kit/types/synthetic/$env+static+private.md
diff --git a/sites/kit.svelte.dev/scripts/types/special-types/$env+static+public.md b/packages/kit/types/synthetic/$env+static+public.md
similarity index 100%
rename from sites/kit.svelte.dev/scripts/types/special-types/$env+static+public.md
rename to packages/kit/types/synthetic/$env+static+public.md
diff --git a/sites/kit.svelte.dev/scripts/types/special-types/$lib.md b/packages/kit/types/synthetic/$lib.md
similarity index 100%
rename from sites/kit.svelte.dev/scripts/types/special-types/$lib.md
rename to packages/kit/types/synthetic/$lib.md
diff --git a/sites/kit.svelte.dev/scripts/types/index.js b/sites/kit.svelte.dev/scripts/types/index.js
index 5411ee401ccf..a609c7bfe0d4 100644
--- a/sites/kit.svelte.dev/scripts/types/index.js
+++ b/sites/kit.svelte.dev/scripts/types/index.js
@@ -229,7 +229,9 @@ function read_d_ts_file(file) {
 	});
 }
 
-const dir = fileURLToPath(new URL('./special-types', import.meta.url).href);
+const dir = fileURLToPath(
+	new URL('../../../../packages/kit/types/synthetic', import.meta.url).href
+);
 for (const file of fs.readdirSync(dir)) {
 	if (!file.endsWith('.md')) continue;