diff --git a/packages/@angular/cli/lib/config/schema.json b/packages/@angular/cli/lib/config/schema.json
index c3c3ad42cef6..2a9ec21ed5d8 100644
--- a/packages/@angular/cli/lib/config/schema.json
+++ b/packages/@angular/cli/lib/config/schema.json
@@ -106,6 +106,23 @@
             "type": "boolean",
             "default": false
           },
+          "loaderRules": {
+            "description": "Array of matching rules extending the default webpack configuration.",
+            "type": "array",
+            "items": {
+              "type": "object",
+              "properties": {
+                "test": {
+                  "type": "string"
+                },
+                "loader": {
+                  "type": "string"
+                }
+              },
+              "required": ["test", "loader"],
+              "additionalProperties": false
+            }
+          },
           "styles": {
             "description": "Global styles to be included in the build.",
             "type": "array",
diff --git a/packages/@angular/cli/models/webpack-configs/common.ts b/packages/@angular/cli/models/webpack-configs/common.ts
index 81829a3b3a68..773f10a9a808 100644
--- a/packages/@angular/cli/models/webpack-configs/common.ts
+++ b/packages/@angular/cli/models/webpack-configs/common.ts
@@ -30,7 +30,9 @@ export function getCommonConfig(wco: WebpackConfigOptions) {
   const nodeModules = path.resolve(projectRoot, 'node_modules');
 
   let extraPlugins: any[] = [];
-  let extraRules: any[] = [];
+  let extraRules: any[] = appConfig.loaderRules.map((entry: any) => {
+    return { test: new RegExp(entry.test), loader: entry.loader };
+  }) || [];
   let entryPoints: { [key: string]: string[] } = {};
 
   // figure out which are the lazy loaded entry points