diff --git a/core/api/src/main/java/org/onosproject/net/group/DefaultGroupDescription.java b/core/api/src/main/java/org/onosproject/net/group/DefaultGroupDescription.java
new file mode 100644
index 0000000..46ccafd
--- /dev/null
+++ b/core/api/src/main/java/org/onosproject/net/group/DefaultGroupDescription.java
@@ -0,0 +1,103 @@
+/*
+ * Copyright 2015 Open Networking Laboratory
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.onosproject.net.group;
+
+import static com.google.common.base.Preconditions.checkNotNull;
+
+import org.onosproject.core.ApplicationId;
+import org.onosproject.net.DeviceId;
+
+public class DefaultGroupDescription implements GroupDescription {
+    private final GroupDescription.Type type;
+    private final GroupBuckets buckets;
+    private final GroupKey appCookie;
+    private final ApplicationId appId;
+    private final DeviceId deviceId;
+
+    /**
+     *
+     * @param deviceId device identifier
+     * @param type type of the group
+     * @param buckets immutable list of group bucket
+     * @param appCookie immutable application cookie to be associated with the group
+     * @param appId application id
+     *
+     * NOTE: The caller of this subsystem MUST ensure the appCookie
+     * provided in this API is immutable
+     */
+    public DefaultGroupDescription(DeviceId deviceId,
+                                   GroupDescription.Type type,
+                                   GroupBuckets buckets,
+                                   GroupKey appCookie,
+                                   ApplicationId appId) {
+        this.type = checkNotNull(type);
+        this.deviceId = checkNotNull(deviceId);
+        this.buckets = checkNotNull(buckets);
+        this.appCookie = checkNotNull(appCookie);
+        this.appId = checkNotNull(appId);
+    }
+
+    /**
+     * Return type of a group object.
+     *
+     * @return GroupType group type
+     */
+    @Override
+    public GroupDescription.Type type() {
+        return this.type;
+    }
+
+    /**
+     * Return device identifier on which this group object is created.
+     *
+     * @return DeviceId device identifier
+     */
+    @Override
+    public DeviceId deviceId() {
+        return this.deviceId;
+    }
+
+    /**
+     * Return application identifier that has created this group object.
+     *
+     * @return ApplicationId application identifier
+     */
+    @Override
+    public ApplicationId appId() {
+        return this.appId;
+    }
+
+    /**
+     * Return application cookie associated with a group object.
+     *
+     * @return GroupKey application cookie
+     */
+    @Override
+    public GroupKey appCookie() {
+        return this.appCookie;
+    }
+
+    /**
+     * Return group buckets of a group.
+     *
+     * @return GroupBuckets immutable list of group bucket
+     */
+    @Override
+    public GroupBuckets buckets() {
+        return this.buckets;
+    }
+
+}
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