The use and return of deposits is a common source of friction between landlords and tenants. To avoid confusion and legal issues, your lease should be clear: the lease between a landlord and tenant is one of the most important documents in their business relationship. These documents list both the responsibilities and rights of both parties, so it is important that this is done from the beginning. Ultimately, when deciding on the right number of people for your space, you need to follow the housing regulations of the Fair Housing Act, as well as city ordinances and state laws. In addition to checking occupancy restrictions, the Building Officials and Code Administrators (BOCA) is a useful rule of thumb. .