diff --git a/src/Microsoft.AspNet.Http/IBuilder.cs b/src/Microsoft.AspNet.Http/IBuilder.cs
index 6a2c1b3197..1673390e07 100644
--- a/src/Microsoft.AspNet.Http/IBuilder.cs
+++ b/src/Microsoft.AspNet.Http/IBuilder.cs
@@ -2,17 +2,22 @@
 // Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information.
 
 using System;
+using System.Collections.Generic;
 
 namespace Microsoft.AspNet.Builder
 {
     public interface IBuilder
     {
         IServiceProvider ApplicationServices { get; set; }
+
         IServerInformation Server { get; set; }
 
+        IDictionary<string, object> Properties { get; set; }
+
         IBuilder Use(Func<RequestDelegate, RequestDelegate> middleware);
 
         IBuilder New();
+
         RequestDelegate Build();
     }
 }
diff --git a/src/Microsoft.AspNet.PipelineCore/Builder.cs b/src/Microsoft.AspNet.PipelineCore/Builder.cs
index fae10cf6a2..12a95ebd8f 100644
--- a/src/Microsoft.AspNet.PipelineCore/Builder.cs
+++ b/src/Microsoft.AspNet.PipelineCore/Builder.cs
@@ -6,6 +6,7 @@ using System.Collections.Generic;
 using System.Linq;
 using System.Threading.Tasks;
 using Microsoft.AspNet.Http;
+using Microsoft.AspNet.Http.Infrastructure;
 
 namespace Microsoft.AspNet.Builder
 {
@@ -15,17 +16,51 @@ namespace Microsoft.AspNet.Builder
 
         public Builder(IServiceProvider serviceProvider)
         {
+            Properties = new Dictionary<string, object>();
             ApplicationServices = serviceProvider;
         }
 
         private Builder(Builder builder)
         {
-            ApplicationServices = builder.ApplicationServices;
-            Server = builder.Server;
+            Properties = builder.Properties;
         }
 
-        public IServiceProvider ApplicationServices { get; set; }
-        public IServerInformation Server { get; set; }
+        public IServiceProvider ApplicationServices
+        {
+            get
+            {
+                return GetProperty<IServiceProvider>(Constants.BuilderProperties.ApplicationServices);
+            }
+            set
+            {
+                SetProperty<IServiceProvider>(Constants.BuilderProperties.ApplicationServices, value);
+            }
+        }
+
+        public IServerInformation Server
+        {
+            get
+            {
+                return GetProperty<IServerInformation>(Constants.BuilderProperties.ServerInformation);
+            }
+            set
+            {
+                SetProperty<IServerInformation>(Constants.BuilderProperties.ServerInformation, value);
+            }
+        }
+
+        public IDictionary<string, object> Properties { get; set; }
+
+        private T GetProperty<T>(string key)
+        {
+            object value;
+            return Properties.TryGetValue(key, out value) ? (T)value : default(T);
+        }
+
+        private void SetProperty<T>(string key, T value)
+        {
+            Properties[key] = value;
+        }
 
         public IBuilder Use(Func<RequestDelegate, RequestDelegate> middleware)
         {
diff --git a/src/Microsoft.AspNet.PipelineCore/Infrastructure/Constants.cs b/src/Microsoft.AspNet.PipelineCore/Infrastructure/Constants.cs
index 9404c79c70..c918c4de33 100644
--- a/src/Microsoft.AspNet.PipelineCore/Infrastructure/Constants.cs
+++ b/src/Microsoft.AspNet.PipelineCore/Infrastructure/Constants.cs
@@ -25,5 +25,11 @@ namespace Microsoft.AspNet.Http.Infrastructure
             internal const string Expires = "Expires";
             internal const string WebSocketSubProtocols = "Sec-WebSocket-Protocol";
         }
+
+        internal static class BuilderProperties
+        {
+            internal static string ServerInformation = "server.Information";
+            internal static string ApplicationServices = "application.Services";
+        }
     }
 }