| Construction | This indicates items relating to construction of a structure. |
| DetachedStructureTypeCd | A code indicating the type of structure detached from the dwelling. This element uses the DetachedStructureType code list. |
| HeatingUnitInfo | The Heating Unit Information aggregate describes detailed information about a primary and/or supplemental heating unit. |
| LengthHandrail | The length of the handrail. |
| NumDetachedStructures | The number of detached structures of this type located on the same property as the dwelling. |
| PlayingSurfaceCd | A code indicating the type of playing surface if the detached structure is a sports court or playing facility. This element uses the PlayingSurface code list. |
| SurfaceArea | The surface area |
| UseCd | A code indicating the use of the item. This element uses the Use code list. |