Ever wondered how RAHB Matrix determines which rooms are principal rooms and how they are counted in the Room Totals? Below is the formula explained:
The following Rooms that are above grade are counted, excluding NON-principal rooms (see below). This will determine the Total Rooms value.
- LLP (portion above/below grade)
- M (main)
- 2 (second floor)
- 3 (third floor), etc.
The following Rooms on the lower level will not be added to the Total count. They do not require size, regardless of room code.
- B (basement)
- LL (second basement/lower level)
The following Non-principal Rooms will not be added to the Total count. They do not require size, regardless level.
- Laundry room
- Mud room
- Storage room
- Utility room
- Wine cellar