diff --git a/Source/DTDLv2/RealEstateCore/Space/Architecture/Room/Lobby.json b/Source/DTDLv2/RealEstateCore/Space/Architecture/Room/Lobby.json
new file mode 100644
index 000000000..e79dcc373
--- /dev/null
+++ b/Source/DTDLv2/RealEstateCore/Space/Architecture/Room/Lobby.json
@@ -0,0 +1,9 @@
+{
+  "@id": "dtmi:org:w3id:rec:Lobby;1",
+  "@type": "Interface",
+  "displayName": {
+    "en": "Lobby"
+  },
+  "extends": "dtmi:org:w3id:rec:Room;1",
+  "@context": ["dtmi:dtdl:context;2"]
+}
diff --git a/Source/DTDLv2/RealEstateCore/Space/Architecture/Room/Lounge.json b/Source/DTDLv2/RealEstateCore/Space/Architecture/Room/Lounge.json
new file mode 100644
index 000000000..6c196445e
--- /dev/null
+++ b/Source/DTDLv2/RealEstateCore/Space/Architecture/Room/Lounge.json
@@ -0,0 +1,9 @@
+{
+  "@id": "dtmi:org:w3id:rec:Lounge;1",
+  "@type": "Interface",
+  "displayName": {
+    "en": "Lounge"
+  },
+  "extends": "dtmi:org:w3id:rec:Room;1",
+  "@context": ["dtmi:dtdl:context;2"]
+}
diff --git a/Source/DTDLv2/RealEstateCore/Space/Architecture/Room/Team-.json b/Source/DTDLv2/RealEstateCore/Space/Architecture/Room/Team-.json
new file mode 100644
index 000000000..835fade6a
--- /dev/null
+++ b/Source/DTDLv2/RealEstateCore/Space/Architecture/Room/Team-.json
@@ -0,0 +1,9 @@
+{
+  "@id": "dtmi:org:w3id:rec:TeamRoom;1",
+  "@type": "Interface",
+  "displayName": {
+    "en": "Team room"
+  },
+  "extends": "dtmi:org:w3id:rec:Room;1",
+  "@context": ["dtmi:dtdl:context;2"]
+}