diff --git a/lib/datasource.js b/lib/datasource.js
index 549e9734..2a8b7b35 100644
--- a/lib/datasource.js
+++ b/lib/datasource.js
@@ -498,6 +498,7 @@ DataSource.prototype.setupDataAccess = function (modelClass, settings) {
       // Set the default id type from connector's ability
       var idType = this.connector.getDefaultIdType() || String;
       idProp.type = idType;
+      modelClass.definition.rawProperties[idName].type = idType;
       modelClass.definition.properties[idName].type = idType;
       if (settings.forceId) {
         modelClass.validatesAbsenceOf(idName, {if: 'isNewRecord'});
diff --git a/lib/model-builder.js b/lib/model-builder.js
index 89b5f765..b36e4d41 100644
--- a/lib/model-builder.js
+++ b/lib/model-builder.js
@@ -377,7 +377,13 @@ ModelBuilder.prototype.define = function defineClass(className, properties, sett
         continue;
       }
       if (subclassProperties[key] === undefined) {
-        subclassProperties[key] = properties[key];
+        var baseProp = properties[key];
+        var basePropCopy = baseProp;
+        if (baseProp && typeof baseProp === 'object') {
+          // Deep clone the base prop
+          basePropCopy = mergeSettings(null, baseProp);
+        }
+        subclassProperties[key] = basePropCopy;
       }
     }
 
diff --git a/test/loopback-dl.test.js b/test/loopback-dl.test.js
index b5d0c658..14d9892b 100644
--- a/test/loopback-dl.test.js
+++ b/test/loopback-dl.test.js
@@ -691,6 +691,22 @@ describe('Load models with base', function () {
     Customer.definition.properties.name.should.have.property('type', String);
   });
 
+  it('should inherit properties by clone from base option', function () {
+    var ds = new ModelBuilder();
+
+    var User = ds.define('User', {name: String});
+
+    var Customer1 = ds.define('Customer1', {vip: Boolean}, {base: 'User'});
+    var Customer2 = ds.define('Customer2', {vip: Boolean}, {base: 'User'});
+
+    Customer1.definition.properties.should.have.property('name');
+    Customer2.definition.properties.should.have.property('name');
+    Customer1.definition.properties.name.should.not.be.equal(
+      Customer2.definition.properties.name);
+    Customer1.definition.properties.name.should.eql(
+      Customer2.definition.properties.name);
+  });
+
   it('should revert properties from base model', function() {
     var ds = new ModelBuilder();