diff --git a/src/newgrf_house.cpp b/src/newgrf_house.cpp
--- a/src/newgrf_house.cpp
+++ b/src/newgrf_house.cpp
@@ -62,6 +62,16 @@ HouseResolverObject::HouseResolverObject
 	this->root_spritegroup = HouseSpec::Get(house_id)->grf_prop.spritegroup[0];
 }
 
+GrfSpecFeature HouseResolverObject::GetFeature() const
+{
+	return GSF_HOUSES;
+}
+
+uint32 HouseResolverObject::GetDebugID() const
+{
+	return HouseSpec::Get(this->house_scope.house_id)->grf_prop.local_id;
+}
+
 HouseClassID AllocateHouseClassID(byte grf_class_id, uint32 grfid)
 {
 	/* Start from 1 because 0 means that no class has been assigned. */