City of Boston Code Ordinance CBC 9-1.3 requires private rental units to be registered on an annual basis and inspections will be conducted for non-exempt units on a 5-year cycle starting January 2014.

The Housing Division has put together a list of FAQ's regarding the rental program registration process.
FAQ's
Housing Division
1010 Mass Ave., 5th Floor
Boston, MA 02118
Tel: 617-635-5300
Fax: 617-635-5383
Email: ISDhousing@cityofboston.gov