diff --git a/packages/schematics/angular/service-worker/index.ts b/packages/schematics/angular/service-worker/index.ts
index c0437bad5774..2e82f7135400 100644
--- a/packages/schematics/angular/service-worker/index.ts
+++ b/packages/schematics/angular/service-worker/index.ts
@@ -10,7 +10,6 @@ import {
   SchematicContext,
   SchematicsException,
   Tree,
-  UpdateRecorder,
   apply,
   chain,
   mergeWith,
@@ -54,13 +53,14 @@ function getProjectConfiguration(
   return applyTo;
 }
 
-function updateConfigFile(options: ServiceWorkerOptions): Rule {
+function updateConfigFile(options: ServiceWorkerOptions, root: string): Rule {
   return (host: Tree, context: SchematicContext) => {
     context.logger.debug('updating config file.');
     const workspace = getWorkspace(host);
 
     const config = getProjectConfiguration(workspace, options);
     config.serviceWorker = true;
+    config.ngswConfigPath = `${root.endsWith('/') ? root : root + '/'}ngsw-config.json`;
 
     return updateWorkspace(workspace);
   };
@@ -103,8 +103,7 @@ function updateAppModule(options: ServiceWorkerOptions): Rule {
     let importModule = 'ServiceWorkerModule';
     let importPath = '@angular/service-worker';
     if (!isImported(moduleSource, importModule, importPath)) {
-      const change = insertImport
-      (moduleSource, modulePath, importModule, importPath);
+      const change = insertImport(moduleSource, modulePath, importModule, importPath);
       if (change) {
         const recorder = host.beginUpdate(modulePath);
         recorder.insertLeft((change as InsertChange).pos, (change as InsertChange).toAdd);
@@ -119,8 +118,7 @@ function updateAppModule(options: ServiceWorkerOptions): Rule {
     // TODO: dynamically find environments relative path
     importPath = '../environments/environment';
     if (!isImported(moduleSource, importModule, importPath)) {
-      const change = insertImport
-      (moduleSource, modulePath, importModule, importPath);
+      const change = insertImport(moduleSource, modulePath, importModule, importPath);
       if (change) {
         const recorder = host.beginUpdate(modulePath);
         recorder.insertLeft((change as InsertChange).pos, (change as InsertChange).toAdd);
@@ -176,16 +174,17 @@ export default function (options: ServiceWorkerOptions): Rule {
       resourcesOutputPath = '/' + resourcesOutputPath.split('/').filter(x => !!x).join('/');
     }
 
+    const root = project.root || project.sourceRoot || '';
     const templateSource = apply(url('./files'), [
       template({ ...options, resourcesOutputPath }),
-      move(project.root),
+      move(root),
     ]);
 
     context.addTask(new NodePackageInstallTask());
 
     return chain([
       mergeWith(templateSource),
-      updateConfigFile(options),
+      updateConfigFile(options, root),
       addDependencies(),
       updateAppModule(options),
     ]);
diff --git a/packages/schematics/angular/service-worker/index_spec.ts b/packages/schematics/angular/service-worker/index_spec.ts
index 24718e9fe576..0c9dfe3a52e2 100644
--- a/packages/schematics/angular/service-worker/index_spec.ts
+++ b/packages/schematics/angular/service-worker/index_spec.ts
@@ -96,6 +96,10 @@ describe('Service Worker Schematic', () => {
     const tree = schematicRunner.runSchematic('service-worker', defaultOptions, appTree);
     const path = '/projects/bar/ngsw-config.json';
     expect(tree.exists(path)).toEqual(true);
+
+    const { projects } = JSON.parse(tree.readContent('/angular.json'));
+    expect(projects.bar.architect.build.configurations.production.ngswConfigPath)
+      .toBe('projects/bar/ngsw-config.json');
   });
 
   it('should add root assets RegExp', () => {
@@ -117,4 +121,25 @@ describe('Service Worker Schematic', () => {
       .toContain('/outDir/*.(eot|svg|cur|jpg|png|webp|gif|otf|ttf|woff|woff2|ani)');
   });
 
+  it('should generate ngsw-config.json in src when the application is at root level', () => {
+    const name = 'foo';
+    const rootAppOptions: ApplicationOptions = {
+      ...appOptions,
+      name,
+      projectRoot: '',
+    };
+    const rootSWOptions: ServiceWorkerOptions = {
+      ...defaultOptions,
+      project: name,
+    };
+
+    let tree = schematicRunner.runSchematic('application', rootAppOptions, appTree);
+    tree = schematicRunner.runSchematic('service-worker', rootSWOptions, tree);
+    expect(tree.exists('/src/ngsw-config.json')).toBe(true);
+
+    const { projects } = JSON.parse(tree.readContent('/angular.json'));
+    expect(projects.foo.architect.build.configurations.production.ngswConfigPath)
+      .toBe('src/ngsw-config.json');
+  });
+
 });
diff --git a/packages/schematics/angular/utility/workspace-models.ts b/packages/schematics/angular/utility/workspace-models.ts
index a297922be73f..051354129d01 100644
--- a/packages/schematics/angular/utility/workspace-models.ts
+++ b/packages/schematics/angular/utility/workspace-models.ts
@@ -54,6 +54,7 @@ export interface BrowserBuilderOptions extends BrowserBuilderBaseOptions {
     extractLicenses?: boolean;
     vendorChunk?: boolean;
     buildOptimizer?: boolean;
+    ngswConfigPath?: string;
     budgets?: {
         type: string;
         maximumWarning?: string;