The department is located near the Come-A-Lot Casino in southeastern Las Venturas. The building, as its name implies, is the headquarters for Las Venturas urban development. The building houses blueprints for several of the city's buildings, and is patrolled by armed security guards. Because of this, photography and the carrying of unconcealed weapons is prohibited within the building.
The building is only accessible during the mission Architectural Espionage. It contains the blueprints of Starkweathers mansion from Manhunt and a model of Caligula's Palace with the Rockstar Games logo.