House is the smallest unit of civilization. Kidding aside, yes, House is the smallest map there is. In fact, you can put a defuser in one of the windows if it happens that it is a bomb situation. Those equipped with shotguns or nitro cells could carve a hole in the wall above the main door. Operators can position themselves there to gain an uphill advantage over those attackers coming from the main door, the kitchen, and the living room in the right side.
River Docks
Construction Site
APC Area
Side Street
Master Bedroom (Top floor)
Workshop (Top floor)
Dining Room (Main floor)
Laundry Room (Bottom floor)