diff --git a/packages/adapter-cloudflare-workers/files/entry.js b/packages/adapter-cloudflare-workers/files/entry.js
index 7501777152a47..fe1c45a246eaf 100644
--- a/packages/adapter-cloudflare-workers/files/entry.js
+++ b/packages/adapter-cloudflare-workers/files/entry.js
@@ -6,7 +6,7 @@ const static_asset_manifest = JSON.parse(static_asset_manifest_json);
 
 const server = new Server(manifest);
 
-const app_path = `/${manifest.appPath}/`;
+const prefix = `/${manifest.appDir}/`;
 
 export default {
 	/**
@@ -20,12 +20,12 @@ export default {
 		const url = new URL(req.url);
 
 		// static assets
-		if (url.pathname.startsWith(app_path)) {
+		if (url.pathname.startsWith(prefix)) {
 			/** @type {Response} */
 			const res = await get_asset_from_kv(req, env, context);
 			if (is_error(res.status)) return res;
 
-			const cache_control = url.pathname.startsWith(app_path + 'immutable/')
+			const cache_control = url.pathname.startsWith(prefix + 'immutable/')
 				? 'public, immutable, max-age=31536000'
 				: 'no-cache';
 
diff --git a/packages/adapter-cloudflare/src/worker.js b/packages/adapter-cloudflare/src/worker.js
index 7f57140c1005b..d3223615f2a09 100644
--- a/packages/adapter-cloudflare/src/worker.js
+++ b/packages/adapter-cloudflare/src/worker.js
@@ -4,7 +4,7 @@ import * as Cache from 'worktop/cfw.cache';
 
 const server = new Server(manifest);
 
-const app_path = `/${manifest.appPath}/`;
+const prefix = `/${manifest.appDir}/`;
 
 /** @type {import('worktop/cfw').Module.Worker<{ ASSETS: import('worktop/cfw.durable').Durable.Object }>} */
 const worker = {
@@ -18,11 +18,11 @@ const worker = {
 		let { pathname } = new URL(req.url);
 
 		// static assets
-		if (pathname.startsWith(app_path)) {
+		if (pathname.startsWith(prefix)) {
 			res = await env.ASSETS.fetch(req);
 			if (!res.ok) return res;
 
-			const cache_control = pathname.startsWith(app_path + 'immutable/')
+			const cache_control = pathname.startsWith(prefix + 'immutable/')
 				? 'public, immutable, max-age=31536000'
 				: 'no-cache';
 
diff --git a/packages/adapter-netlify/index.js b/packages/adapter-netlify/index.js
index 4c4bfac3be17e..f09ba0418d3ba 100644
--- a/packages/adapter-netlify/index.js
+++ b/packages/adapter-netlify/index.js
@@ -63,7 +63,7 @@ export default function ({ split = false, edge = edge_set_in_env_var } = {}) {
 			builder.copy('_headers', headers_file);
 			appendFileSync(
 				headers_file,
-				`\n\n/${builder.getAppPath()}/immutable/*\n  cache-control: public\n  cache-control: immutable\n  cache-control: max-age=31536000\n`
+				`\n\n/${builder.getAppDirectory()}/immutable/*\n  cache-control: public\n  cache-control: immutable\n  cache-control: max-age=31536000\n`
 			);
 
 			if (edge) {
diff --git a/packages/adapter-vercel/index.js b/packages/adapter-vercel/index.js
index d18d4342071e8..b674b30145ca9 100644
--- a/packages/adapter-vercel/index.js
+++ b/packages/adapter-vercel/index.js
@@ -118,7 +118,7 @@ export default function ({ external = [], edge, split } = {}) {
 				...redirects[builder.config.kit.trailingSlash],
 				...prerendered_redirects,
 				{
-					src: `/${builder.getAppPath()}/.+`,
+					src: `/${builder.getAppDirectory()}/.+`,
 					headers: {
 						'cache-control': 'public, immutable, max-age=31536000'
 					}
diff --git a/packages/kit/src/core/adapt/builder.js b/packages/kit/src/core/adapt/builder.js
index 93998ec7e2e13..71c83ca860b96 100644
--- a/packages/kit/src/core/adapt/builder.js
+++ b/packages/kit/src/core/adapt/builder.js
@@ -128,8 +128,8 @@ export function create_builder({ config, build_data, routes, prerendered, log })
 			return config.kit.files.assets;
 		},
 
-		getAppPath() {
-			return build_data.app_path;
+		getAppDirectory() {
+			return build_data.app_dir;
 		},
 
 		writeClient(dest) {
diff --git a/packages/kit/src/core/generate_manifest/index.js b/packages/kit/src/core/generate_manifest/index.js
index 46d56d340f032..91ec769976363 100644
--- a/packages/kit/src/core/generate_manifest/index.js
+++ b/packages/kit/src/core/generate_manifest/index.js
@@ -45,7 +45,6 @@ export function generate_manifest({ build_data, relative_path, routes, format =
 	/** @type {import('types').SSRManifest} */
 	return `{
 		appDir: ${s(build_data.app_dir)},
-		appPath: ${s(build_data.app_path)},
 		assets: new Set(${s(assets)}),
 		mimeTypes: ${s(get_mime_lookup(build_data.manifest_data))},
 		_: {
diff --git a/packages/kit/src/exports/vite/dev/index.js b/packages/kit/src/exports/vite/dev/index.js
index 489d78c9e4a6f..cbab3e1a57796 100644
--- a/packages/kit/src/exports/vite/dev/index.js
+++ b/packages/kit/src/exports/vite/dev/index.js
@@ -59,7 +59,6 @@ export async function dev(vite, vite_config, svelte_config) {
 
 		manifest = {
 			appDir: svelte_config.kit.appDir,
-			appPath: svelte_config.kit.appDir,
 			assets: new Set(manifest_data.assets.map((asset) => asset.file)),
 			mimeTypes: get_mime_lookup(manifest_data),
 			_: {
diff --git a/packages/kit/src/exports/vite/index.js b/packages/kit/src/exports/vite/index.js
index dd9d4f0e5c45f..241f04bc7daf7 100644
--- a/packages/kit/src/exports/vite/index.js
+++ b/packages/kit/src/exports/vite/index.js
@@ -395,8 +395,7 @@ function kit() {
 
 				/** @type {import('types').BuildData} */
 				build_data = {
-					app_dir: svelte_config.kit.appDir,
-					app_path: `${svelte_config.kit.paths.base.slice(1)}${
+					app_dir: `${svelte_config.kit.paths.base.slice(1)}${
 						svelte_config.kit.paths.base ? '/' : ''
 					}${svelte_config.kit.appDir}`,
 					manifest_data,
diff --git a/packages/kit/types/index.d.ts b/packages/kit/types/index.d.ts
index 9468fce84785a..ad271307517f6 100644
--- a/packages/kit/types/index.d.ts
+++ b/packages/kit/types/index.d.ts
@@ -85,8 +85,8 @@ export interface Builder {
 	getClientDirectory(): string;
 	getServerDirectory(): string;
 	getStaticDirectory(): string;
-	/** The application path including any configured base path */
-	getAppPath(): string;
+	/** The application directory including any configured base path */
+	getAppDirectory(): string;
 
 	/**
 	 * @param dest the destination folder to which files should be copied
@@ -381,7 +381,6 @@ export interface ServerInitOptions {
 
 export interface SSRManifest {
 	appDir: string;
-	appPath: string;
 	assets: Set<string>;
 	mimeTypes: Record<string, string>;
 
diff --git a/packages/kit/types/internal.d.ts b/packages/kit/types/internal.d.ts
index c2d27ee6fec94..3f7ff7d760163 100644
--- a/packages/kit/types/internal.d.ts
+++ b/packages/kit/types/internal.d.ts
@@ -47,7 +47,6 @@ export interface Asset {
 
 export interface BuildData {
 	app_dir: string;
-	app_path: string;
 	manifest_data: ManifestData;
 	service_worker: string | null;
 	client: {