Reading, MA

Reading, MA Accessory Dwelling Unit (ADU) Rules

City Acceptance Rating: 5/10

Last updated: 10.29.2024

Image source: Reading Recap

What You Need To Know

Currently not in compliance with the Massachusetts Affordable Homes Act.

A single ADU is allowed with a permit on single-family home properties. The ADU size cannot exceed one third of the residence and must maintain a single family appearance. Occupants limited to three.

Type of ADU Permit Required

ADUs require a special permit.

ADU Rules

  • An Accessory Apartment must not exceed the lesser of 1,000 square feet or one-third of the gross floor area of the primary residence, excluding garages, unfinished basements, sheds, or other accessory structures.

  • At least one owner must reside in either the Principal Dwelling or Accessory Apartment on the property.

  • The Accessory Apartment should maintain the single-family appearance of the property; new entries must be on the side or rear, and stairways to upper-level apartments should be enclosed within the building.

  • All motor vehicles associated with the Accessory Apartment must be parked off the street in a driveway or garage, without compromising the neighborhood’s single-family character.

  • Both the Principal Dwelling and Accessory Apartment must be connected to public water and sewer systems.

  • The apartment is limited to two bedrooms and a maximum of three occupants.

  • For detached structures built before 1910 or listed in the Historical Inventory, any exterior alterations should preserve the structure’s historical features, with limited footprint expansion (up to 10%).

  • A Detached Accessory Apartment cannot be located in the front yard or any area between the Principal Dwelling and a right-of-way, unless an existing structure in that area is converted.

  • Any Special Permit issued must ensure that the Accessory Apartment maintains the neighborhood's character and complements the Principal Dwelling.

Resources:

https://www.readingma.gov/DocumentCenter/View/2242/Zoning-Bylaw-PDF  - page 38