diff --git a/BUILD.gn b/BUILD.gn
index 6f60af4dc0799b..7e8f531eb36974 100644
--- a/BUILD.gn
+++ b/BUILD.gn
@@ -23,6 +23,7 @@ group("all") {
     "src/lib/support",
     "src/lwip:all",
     "src/system",
+    "src/transport",
     "third_party/mbedtls",
     "third_party/nlassert",
     "third_party/nlfaultinjection",
diff --git a/src/transport/BUILD.gn b/src/transport/BUILD.gn
new file mode 100644
index 00000000000000..177a8cf1a4d97b
--- /dev/null
+++ b/src/transport/BUILD.gn
@@ -0,0 +1,37 @@
+# Copyright (c) 2020 Project CHIP Authors
+#
+# 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.
+
+source_set("transport") {
+  sources = [
+    "Base.h",
+    "MessageHeader.cpp",
+    "MessageHeader.h",
+    "PeerAddress.h",
+    "PeerConnectionState.h",
+    "PeerConnections.h",
+    "SecureSession.cpp",
+    "SecureSession.h",
+    "SecureSessionMgr.cpp",
+    "SecureSessionMgr.h",
+    "UDP.cpp",
+    "UDP.h",
+  ]
+
+  public_deps = [
+    "//src/crypto",
+    "//src/inet",
+    "//src/lib/core",
+    "//src/lib/support",
+  ]
+}