Plans must show standard sized furniture in all rooms, sufficient to illustrate the points above.
A well designed building will need less space, and a poorly design building will need more.
Ensure flexibility by providing for a range of furniture layouts in living and bedrooms, and easy furniture removal.
Ensure circulation by stairs, corridors and through rooms is planned as efficiently as possible, to maintain the maximum amount of usable floor space. Circulation should be integrated into living spaces except at entrances, where maintaining privacy is critical, and the front door should be screened from living areas.