diff --git a/src/deep-linking/util.spec.ts b/src/deep-linking/util.spec.ts
index 2697683d..928e94dc 100644
--- a/src/deep-linking/util.spec.ts
+++ b/src/deep-linking/util.spec.ts
@@ -1,12 +1,53 @@
 import { join } from 'path';
 import * as util from './util';
 
+import * as Constants from '../util/constants';
 import { FileCache } from '../util/file-cache';
 import *  as helpers from '../util/helpers';
 import { DeepLinkConfigEntry } from '../util/interfaces';
 import * as tsUtils from '../util/typescript-utils';
 
 describe('util', () => {
+  describe('filterTypescriptFilesForDeepLinks', () => {
+    it('should return a list of files that are in the directory specified for deeplinking', () => {
+      const pagesDir = join('Users', 'dan', 'myApp', 'src', 'pages');
+
+      const knownFileContent = 'Some string';
+      const pageOneTs = join(pagesDir, 'page-one', 'page-one.ts');
+      const pageOneHtml = join(pagesDir, 'page-one', 'page-one.html');
+      const pageOneModule = join(pagesDir, 'page-one', 'page-one.module.ts');
+
+      const pageTwoTs = join(pagesDir, 'page-two', 'page-two.ts');
+      const pageTwoHtml = join(pagesDir, 'page-two', 'page-two.html');
+      const pageTwoModule = join(pagesDir, 'page-two', 'page-two.module.ts');
+
+      const pageThreeTs = join(pagesDir, 'page-three', 'page-three.ts');
+      const pageThreeHtml = join(pagesDir, 'page-three', 'page-three.html');
+      const pageThreeModule = join(pagesDir, 'page-three', 'page-three.module.ts');
+
+      const someOtherFile = join('Users', 'hans-gruber', 'test.ts');
+
+      const fileCache = new FileCache();
+      fileCache.set(pageOneTs, { path: pageOneTs, content: knownFileContent});
+      fileCache.set(pageOneHtml, { path: pageOneHtml, content: knownFileContent});
+      fileCache.set(pageOneModule, { path: pageOneModule, content: knownFileContent});
+      fileCache.set(pageTwoTs, { path: pageTwoTs, content: knownFileContent});
+      fileCache.set(pageTwoHtml, { path: pageTwoHtml, content: knownFileContent});
+      fileCache.set(pageTwoModule, { path: pageTwoModule, content: knownFileContent});
+      fileCache.set(pageThreeTs, { path: pageThreeTs, content: knownFileContent});
+      fileCache.set(pageThreeHtml, { path: pageThreeHtml, content: knownFileContent});
+      fileCache.set(pageThreeModule, { path: pageThreeModule, content: knownFileContent});
+      fileCache.set(someOtherFile, { path: someOtherFile, content: knownFileContent});
+
+      spyOn(helpers, helpers.getStringPropertyValue.name).and.returnValues(pagesDir, '.module.ts');
+
+      const results = util.filterTypescriptFilesForDeepLinks(fileCache);
+      expect(results.length).toEqual(3);
+      expect(results[0].path).toEqual(pageOneTs);
+      expect(results[1].path).toEqual(pageTwoTs);
+      expect(results[2].path).toEqual(pageThreeTs);
+    });
+  });
   describe('parseDeepLinkDecorator', () => {
     it('should return the decorator content from fully hydrated decorator', () => {
       const knownContent = `
@@ -1062,14 +1103,14 @@ export class PageThreeModule {
 
       `;
 
-      const prefix = join('Users', 'dan', 'myApp', 'src');
-      const appNgModulePath = join(prefix, 'app', 'app.module.ts');
-      const pageOneNgModulePath = join(prefix, 'pages', 'page-one', 'page-one.module.ts');
-      const pageOnePath = join(prefix, 'pages', 'page-one', 'page-one.ts');
-      const pageTwoNgModulePath = join(prefix, 'pages', 'page-two', 'page-two.module.ts');
-      const pageTwoPath = join(prefix, 'pages', 'page-two', 'page-two.ts');
-      const pageSettingsNgModulePath = join(prefix, 'pages', 'settings-page', 'settings-page.module.ts');
-      const pageSettingsPath = join(prefix, 'pages', 'settings-page', 'settings-page.ts');
+      const srcDir = join('Users', 'dan', 'myApp', 'src');
+      const appNgModulePath = join(srcDir, 'app', 'app.module.ts');
+      const pageOneNgModulePath = join(srcDir, 'pages', 'page-one', 'page-one.module.ts');
+      const pageOnePath = join(srcDir, 'pages', 'page-one', 'page-one.ts');
+      const pageTwoNgModulePath = join(srcDir, 'pages', 'page-two', 'page-two.module.ts');
+      const pageTwoPath = join(srcDir, 'pages', 'page-two', 'page-two.ts');
+      const pageSettingsNgModulePath = join(srcDir, 'pages', 'settings-page', 'settings-page.module.ts');
+      const pageSettingsPath = join(srcDir, 'pages', 'settings-page', 'settings-page.ts');
 
       const fileCache = new FileCache();
       fileCache.set(pageOnePath, { path: pageOnePath, content: pageOneContent});
@@ -1081,7 +1122,13 @@ export class PageThreeModule {
       fileCache.set(pageSettingsPath, { path: pageSettingsPath, content: pageSettingsContent});
       fileCache.set(pageSettingsNgModulePath, { path: pageSettingsNgModulePath, content: pageSettingsNgModuleContent});
 
-      spyOn(helpers, helpers.getStringPropertyValue.name).and.returnValue('.module.ts');
+      spyOn(helpers, helpers.getStringPropertyValue.name).and.callFake((input: string) => {
+        if (input === Constants.ENV_VAR_DEEPLINKS_DIR) {
+          return srcDir;
+        } else {
+          return '.module.ts';
+        }
+      });
 
       const results = util.getDeepLinkData(appNgModulePath, fileCache, false);
       expect(results.length).toEqual(2);
@@ -1249,14 +1296,14 @@ export class PageThreeModule {
 
       `;
 
-      const prefix = join('/Users', 'dan', 'myApp', 'src');
-      const appNgModulePath = join(prefix, 'app', 'app.module.ts');
-      const pageOneNgModulePath = join(prefix, 'pages', 'page-one', 'page-one.module.ts');
-      const pageOnePath = join(prefix, 'pages', 'page-one', 'page-one.ts');
-      const pageTwoNgModulePath = join(prefix, 'pages', 'page-two', 'page-two.module.ts');
-      const pageTwoPath = join(prefix, 'pages', 'page-two', 'page-two.ts');
-      const pageSettingsNgModulePath = join(prefix, 'pages', 'settings-page', 'fake-dir', 'settings-page.module.ts');
-      const pageSettingsPath = join(prefix, 'pages', 'settings-page', 'fake-dir', 'settings-page.ts');
+      const srcDir = join('/Users', 'dan', 'myApp', 'src');
+      const appNgModulePath = join(srcDir, 'app', 'app.module.ts');
+      const pageOneNgModulePath = join(srcDir, 'pages', 'page-one', 'page-one.module.ts');
+      const pageOnePath = join(srcDir, 'pages', 'page-one', 'page-one.ts');
+      const pageTwoNgModulePath = join(srcDir, 'pages', 'page-two', 'page-two.module.ts');
+      const pageTwoPath = join(srcDir, 'pages', 'page-two', 'page-two.ts');
+      const pageSettingsNgModulePath = join(srcDir, 'pages', 'settings-page', 'fake-dir', 'settings-page.module.ts');
+      const pageSettingsPath = join(srcDir, 'pages', 'settings-page', 'fake-dir', 'settings-page.ts');
 
       const fileCache = new FileCache();
       fileCache.set(pageOnePath, { path: pageOnePath, content: pageOneContent});
@@ -1268,7 +1315,13 @@ export class PageThreeModule {
       fileCache.set(pageSettingsPath, { path: pageSettingsPath, content: pageSettingsContent});
       fileCache.set(pageSettingsNgModulePath, { path: pageSettingsNgModulePath, content: pageSettingsNgModuleContent});
 
-      spyOn(helpers, helpers.getStringPropertyValue.name).and.returnValue('.module.ts');
+      spyOn(helpers, helpers.getStringPropertyValue.name).and.callFake((input: string) => {
+        if (input === Constants.ENV_VAR_DEEPLINKS_DIR) {
+          return srcDir;
+        } else {
+          return '.module.ts';
+        }
+      });
 
       const results = util.getDeepLinkData(appNgModulePath, fileCache, false);
       expect(results.length).toEqual(3);
@@ -1461,14 +1514,14 @@ export class PageThreeModule {
 
       `;
 
-      const prefix = join('/Users', 'dan', 'myApp', 'src');
-      const appNgModulePath = join(prefix, 'app', 'app.module.ts');
-      const pageOneNgModulePath = join(prefix, 'pages', 'page-one', 'page-one.not-module.ts');
-      const pageOnePath = join(prefix, 'pages', 'page-one', 'page-one.ts');
-      const pageTwoNgModulePath = join(prefix, 'pages', 'page-two', 'page-two.module.ts');
-      const pageTwoPath = join(prefix, 'pages', 'page-two', 'page-two.ts');
-      const pageSettingsNgModulePath = join(prefix, 'pages', 'settings-page', 'fake-dir', 'settings-page.module.ts');
-      const pageSettingsPath = join(prefix, 'pages', 'settings-page', 'fake-dir', 'settings-page.ts');
+      const srcDir = join('/Users', 'dan', 'myApp', 'src');
+      const appNgModulePath = join(srcDir, 'app', 'app.module.ts');
+      const pageOneNgModulePath = join(srcDir, 'pages', 'page-one', 'page-one.not-module.ts');
+      const pageOnePath = join(srcDir, 'pages', 'page-one', 'page-one.ts');
+      const pageTwoNgModulePath = join(srcDir, 'pages', 'page-two', 'page-two.module.ts');
+      const pageTwoPath = join(srcDir, 'pages', 'page-two', 'page-two.ts');
+      const pageSettingsNgModulePath = join(srcDir, 'pages', 'settings-page', 'fake-dir', 'settings-page.module.ts');
+      const pageSettingsPath = join(srcDir, 'pages', 'settings-page', 'fake-dir', 'settings-page.ts');
 
       const fileCache = new FileCache();
       fileCache.set(pageOnePath, { path: pageOnePath, content: pageOneContent});
@@ -1480,7 +1533,13 @@ export class PageThreeModule {
       fileCache.set(pageSettingsPath, { path: pageSettingsPath, content: pageSettingsContent});
       fileCache.set(pageSettingsNgModulePath, { path: pageSettingsNgModulePath, content: pageSettingsNgModuleContent});
 
-      spyOn(helpers, helpers.getStringPropertyValue.name).and.returnValue('.module.ts');
+      spyOn(helpers, helpers.getStringPropertyValue.name).and.callFake((input: string) => {
+        if (input === Constants.ENV_VAR_DEEPLINKS_DIR) {
+          return srcDir;
+        } else {
+          return '.module.ts';
+        }
+      });
 
       const knownError = 'should never get here';
 
diff --git a/src/deep-linking/util.ts b/src/deep-linking/util.ts
index 083556ff..553f8936 100644
--- a/src/deep-linking/util.ts
+++ b/src/deep-linking/util.ts
@@ -18,14 +18,14 @@ import { Logger } from '../logger/logger';
 import * as Constants from '../util/constants';
 import { FileCache } from '../util/file-cache';
 import { changeExtension, getStringPropertyValue, replaceAll } from '../util/helpers';
-import { BuildContext, ChangedFile, DeepLinkConfigEntry, DeepLinkDecoratorAndClass, DeepLinkPathInfo } from '../util/interfaces';
+import { BuildContext, ChangedFile, DeepLinkConfigEntry, DeepLinkDecoratorAndClass, DeepLinkPathInfo, File } from '../util/interfaces';
 import { appendAfter, getClassDeclarations, getTypescriptSourceFile, getNodeStringContent, replaceNode } from '../util/typescript-utils';
 
 import { transpileTsString } from '../transpile';
 
 export function getDeepLinkData(appNgModuleFilePath: string, fileCache: FileCache, isAot: boolean): DeepLinkConfigEntry[] {
-  // TODO, get `node_modules` out of here, use the property instead
-  const typescriptFiles = fileCache.getAll().filter(file => extname(file.path) === '.ts' && file.path.indexOf('node_modules') === -1);
+  // we only care about analyzing a subset of typescript files, so do that for efficiency
+  const typescriptFiles = filterTypescriptFilesForDeepLinks(fileCache);
   const deepLinkConfigEntries: DeepLinkConfigEntry[] = [];
   typescriptFiles.forEach(file => {
     const sourceFile = getTypescriptSourceFile(file.path, file.content);
@@ -41,6 +41,12 @@ export function getDeepLinkData(appNgModuleFilePath: string, fileCache: FileCach
   return deepLinkConfigEntries;
 }
 
+export function filterTypescriptFilesForDeepLinks(fileCache: FileCache): File[] {
+  const deepLinksDir = getStringPropertyValue(Constants.ENV_VAR_DEEPLINKS_DIR);
+  const moduleSuffix = getStringPropertyValue(Constants.ENV_NG_MODULE_FILE_NAME_SUFFIX);
+  return fileCache.getAll().filter(file => extname(file.path) === '.ts' && file.path.indexOf(moduleSuffix) === -1 && file.path.indexOf(deepLinksDir) >= 0);
+}
+
 export function getNgModulePathFromCorrespondingPage(filePath: string) {
   const newExtension = getStringPropertyValue(Constants.ENV_NG_MODULE_FILE_NAME_SUFFIX);
   return changeExtension(filePath, newExtension);
diff --git a/src/util/config.spec.ts b/src/util/config.spec.ts
index f0f7f51c..60875b0d 100644
--- a/src/util/config.spec.ts
+++ b/src/util/config.spec.ts
@@ -70,6 +70,7 @@ describe('config', () => {
       expect(context.rootDir).toEqual(process.cwd());
       expect(context.tmpDir).toEqual(join(process.cwd(), Constants.TMP_DIR));
       expect(context.srcDir).toEqual(join(process.cwd(), Constants.SRC_DIR));
+      expect(fakeConfig[Constants.ENV_VAR_DEEPLINKS_DIR]).toEqual(context.srcDir);
       expect(context.wwwDir).toEqual(join(process.cwd(), Constants.WWW_DIR));
       expect(context.wwwIndex).toEqual('index.html');
       expect(context.buildDir).toEqual(join(process.cwd(), Constants.WWW_DIR, Constants.BUILD_DIR));
diff --git a/src/util/config.ts b/src/util/config.ts
index 153d36c5..a9273e04 100644
--- a/src/util/config.ts
+++ b/src/util/config.ts
@@ -71,6 +71,10 @@ export function generateContext(context?: BuildContext): BuildContext {
   setProcessEnvVar(Constants.ENV_VAR_SRC_DIR, context.srcDir);
   Logger.debug(`srcDir set to ${context.srcDir}`);
 
+  const deepLinksDir = resolve(getConfigValue(context, '--deepLinksDir', null, Constants.ENV_VAR_DEEPLINKS_DIR, Constants.ENV_VAR_DEEPLINKS_DIR.toLowerCase(), context.srcDir));
+  setProcessEnvVar(Constants.ENV_VAR_DEEPLINKS_DIR, deepLinksDir);
+  Logger.debug(`deepLinksDir set to ${deepLinksDir}`);
+
   context.wwwDir = resolve(context.wwwDir || getConfigValue(context, '--wwwDir', null, Constants.ENV_VAR_WWW_DIR, Constants.ENV_VAR_WWW_DIR.toLowerCase(), join(context.rootDir, Constants.WWW_DIR)));
   setProcessEnvVar(Constants.ENV_VAR_WWW_DIR, context.wwwDir);
   Logger.debug(`wwwDir set to ${context.wwwDir}`);
diff --git a/src/util/constants.ts b/src/util/constants.ts
index ceb1f88f..bd3f2be5 100644
--- a/src/util/constants.ts
+++ b/src/util/constants.ts
@@ -26,6 +26,7 @@ export const ENV_VAR_DEV = 'dev';
 export const ENV_VAR_IONIC_ENV = 'IONIC_ENV';
 export const ENV_VAR_ROOT_DIR = 'IONIC_ROOT_DIR';
 export const ENV_VAR_SRC_DIR = 'IONIC_SRC_DIR';
+export const ENV_VAR_DEEPLINKS_DIR = 'IONIC_DEEPLINKS_DIR';
 export const ENV_VAR_PAGES_DIR = 'IONIC_PAGES_DIR';
 export const ENV_VAR_COMPONENTS_DIR = 'IONIC_COMPONENTS_DIR';
 export const ENV_VAR_DIRECTIVES_DIR = 'IONIC_DIRECTIVES_DIR';