| Reference | R | Reference ID for this specified type in this project (e.g. type 'A-1') | Text |
| BuildingID | I | A unique identifier assigned to a building. A temporary identifier is initially assigned at the time of making a planning application. This temporary identifier is changed to a permanent identifier when the building is registered into a statutory buildings and properties database. | Text |
| IsPermanentID | P | Indicates whether the identity assigned to a building is permanent or temporary. | Boolean |
| ConstructionMethod | M | The type of construction action to the building, the project deals with, e.g. new construction, renovation, refurbishment, etc. | Text |
| FireProtectionClass | F | Main fire protection class for the building which is assigned from the fire protection classification table as given by the relevant national building code. | Text |
| SprinklerProtection | S | Thermal transmittance coefficient (U-Value) of a material. Here the total thermal transmittance coefficient through the slab (including all materials).Indication whether this object is sprinkler protected or not. | Boolean |
| SprinklerProtectionAutomatic | A | Indication whether this object has an automatic sprinkler protection or not. | Boolean |
| OccupancyType | O | Occupancy type for this object. It is defined according to the presiding national building code. | Text |
| GrossPlannedArea | G | Total planned gross area for the building Used for programming the building. | Number |
| NetPlannedArea | N | Total planned net area for the building Used for programming the building. | Number |
| NumberOfStoreys | S | The number of storeys within a building. Captured for those cases where the IfcBuildingStorey entity is not used. Note that if IfcBuilingStorey is asserted and the number of storeys in a building can be determined from it, then this approach should be used in preference to setting a property for the number of storeys. | Integer |
| YearOfConstruction | C | Year of construction of this building, including expected year of completion. | Text |
| YearOfLastRefurbishment | R | Year of last major refurbishment, or reconstruction, of the building (applies to reconstruction works). | Text |
| IsLandmarked | L | This builing is listed as a historic building, or not, or unknown. | Integer |
| Area Units | U | Area Units | Integer |