diff --git a/scripts/extra-properties.mako.cpp b/scripts/extra-properties.mako.cpp
new file mode 100644
index 0000000..03c730a
--- /dev/null
+++ b/scripts/extra-properties.mako.cpp
@@ -0,0 +1,24 @@
+## This file is a template.  The comment below is emitted
+## into the rendered file; feel free to edit this file.
+// WARNING: Generated source. Do not edit!
+
+#include "types.hpp"
+
+using namespace ipmi::vpd;
+
+extern const std::map<Path, InterfaceMap> extras = {
+% for path in dict.iterkeys():
+<%
+    interfaces = dict[path]
+%>\
+    {"${path}",{
+    % for interface,properties in interfaces.iteritems():
+        {"${interface}",{
+        % for property,value in properties.iteritems():
+            {"${property}", ${value}},
+        % endfor
+        }},
+    % endfor
+    }},
+% endfor
+};