Do I need a Building Permit to add a shed on my property?

Accessory structures such as sheds that are under 200 square feet in area (footprint) are not regulated by the MA Building Code, CMR 780. However, you are required to register your shed by submitting a completed Shed Registration Form. If the shed you are proposing is 120 square feet or less, the minimum setback to side and rear property lines is 10 feet. If it is between 120 and 200 square feet, it must meet the setback requirements for your lot, usually 40 feet from the street property line and 25 feet from sides and rear property lines. You are responsible for knowing whether your property is in the Old King’s Highway Historic District and for applying to the OKH HD Committee prior to registering your shed if appropriate.