SiteSubRegion Properties
| Name | Return Type | Description |
|---|---|---|
| HostId | ElementId | The element id of the topography surface hosting this SiteSubRegion. |
| IsValidObject | Boolean | Specifies whether the .NET object represents a valid Revit entity. |
| TopographySurface | TopographySurface | The TopographySurface element which this SiteSubRegion represents. |