diff --git a/essentials-framework/Essentials Core/PepperDashEssentialsBase/PepperDash_Essentials_Core.csproj b/essentials-framework/Essentials Core/PepperDashEssentialsBase/PepperDash_Essentials_Core.csproj
index 6e48fd66..7e18606f 100644
--- a/essentials-framework/Essentials Core/PepperDashEssentialsBase/PepperDash_Essentials_Core.csproj	
+++ b/essentials-framework/Essentials Core/PepperDashEssentialsBase/PepperDash_Essentials_Core.csproj	
@@ -233,6 +233,7 @@
     <Compile Include="Interfaces\ILogStringsWithLevel.cs" />
     <Compile Include="Occupancy\GlsOccupancySensorPropertiesConfig.cs" />
     <Compile Include="Occupancy\GlsOirOccupancySensorController.cs" />
+    <Compile Include="PartitionSensor\IPartitionStateProvider.cs" />
     <Compile Include="Queues\ComsMessage.cs" />
     <Compile Include="Queues\ProcessStringMessage.cs" />
     <Compile Include="Queues\GenericQueue.cs" />
@@ -287,6 +288,7 @@
     <Compile Include="Remotes\CrestronRemotePropertiesConfig.cs" />
     <Compile Include="Remotes\Hrxx0WirelessRemoteController.cs" />
     <Compile Include="Room\Behaviours\RoomOnToDefaultSourceWhenOccupied.cs" />
+    <Compile Include="Room\Combining\EssentialsRoomCombinerPropertiesConfig.cs" />
     <Compile Include="Room\EssentialsRoomBase.cs" />
     <Compile Include="Room\Config\EssentialsRoomScheduledEventsConfig.cs" />
     <Compile Include="Room\IEssentialsRoom.cs" />
diff --git a/essentials-framework/Essentials Core/PepperDashEssentialsBase/Room/Combining/EssentialsRoomCombinerPropertiesConfig.cs b/essentials-framework/Essentials Core/PepperDashEssentialsBase/Room/Combining/EssentialsRoomCombinerPropertiesConfig.cs
new file mode 100644
index 00000000..5f1adcfa
--- /dev/null
+++ b/essentials-framework/Essentials Core/PepperDashEssentialsBase/Room/Combining/EssentialsRoomCombinerPropertiesConfig.cs	
@@ -0,0 +1,72 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using Crestron.SimplSharp;
+
+using PepperDash.Core;
+
+using Newtonsoft.Json;
+
+namespace PepperDash.Essentials.Core.Room
+{
+    /// <summary>
+    /// Config properties for an EssentialsRoomCombiner device
+    /// </summary>
+    public class EssentialsRoomCombinerPropertiesConfig
+    {
+        [JsonProperty("partitions")]
+        public List<PartitionConfig> Partitions {get; set;}
+
+        [JsonProperty("scenarios")]
+        public List<RoomCombinationScenario> Scenarios { get; set; }
+
+        [JsonProperty("rooms")]
+        public List<IKeyed> Rooms {get; set;}
+    }
+
+    /// <summary>
+    /// Config properties for a partition that separates rooms
+    /// </summary>
+    public class PartitionConfig : IKeyName
+    {
+        /// <summary>
+        /// Key of the device that implements IPartitionStateProvider to provide the state of the partition
+        /// </summary>
+        [JsonProperty("deviceKey")]
+        public string DeviceKey { get; set; }
+
+        /// <summary>
+        /// Keys of the rooms that this partion would be located between
+        /// </summary>
+        [JsonProperty("roomKeys")]
+        public List<string> RoomKeys { get; set; }
+    }
+
+    /// <summary>
+    /// Config propeties for a room combination scenario
+    /// </summary>
+    public class RoomCombinationScenario : IKeyName
+    {
+        [JsonProperty("partitionStates")]
+        public List<PartitionState> PartitionStates { get; set; }
+
+        [JsonProperty("enabledRoomKeys")]
+        public List<string> EnabledRoomKeys { get; set; }
+
+        [JsonProperty("actions")]
+        public List<DeviceActionWrapper> Actions { get; set; }    
+    }
+
+    /// <summary>
+    /// Config properties to represent the state of a partition sensor in a RoomCombinationScenario
+    /// </summary>
+    public class PartitionState
+    {
+        [JsonProperty("partitionKey")]
+        public string PartitionKey { get; set; }
+
+        [JsonProperty("partitionSensedState")]
+        public bool PartitionSensedState { get; set; }
+    }
+}
\ No newline at end of file