Northborough updates accessory dwelling unit bylaws to align with state regulations

The Northborough Select Board recently convened to discuss significant updates to local housing regulations, particularly focusing on accessory dwelling units (ADUs). These changes, prompted by the Affordable Homes Act passed in August 2024, aim to align Northborough's bylaws with new state mandates designed to increase housing availability across Massachusetts.

One of the key proposals discussed was the amendment of the definition of dwelling units and ADUs to match state standards. This update is intended to simplify the process for homeowners wishing to build ADUs, which can now be constructed by right, meaning they do not require extensive planning board approval. Instead, homeowners will only need to work with the building inspector for permits, streamlining the process significantly.

The new regulations allow for one ADU per lot, with a maximum size of 900 square feet or half the size of the primary dwelling, whichever is smaller. Notably, the requirement for property owners to reside in the main dwelling has been eliminated, allowing for greater flexibility in rental arrangements. This change opens the door for homeowners to potentially rent out both the main house and the ADU, which could help address local housing shortages.

Concerns were raised during the meeting about the implications of these changes, particularly regarding neighborhood dynamics and the potential for increased rental properties, including short-term rentals like Airbnbs. While the board noted that towns have the authority to regulate short-term rentals, Northborough has not experienced significant issues with them thus far.

Another important topic was the impact of these changes on the town's affordable housing goals. The board acknowledged that while ADUs will contribute to the overall housing stock, they cannot be classified as affordable units under state law, which could affect Northborough's standing in meeting its 10% affordable housing threshold.

The meeting also touched on additional articles related to zoning, including the establishment of a lot shape factor to better accommodate irregularly shaped lots in town and a housekeeping item to streamline stormwater management permitting processes.

As Northborough moves forward with these updates, the Select Board emphasized the importance of community engagement and transparency, ensuring that residents are informed about changes that could affect their neighborhoods. The board's proactive approach aims to balance the need for increased housing options with the preservation of community character and quality of life.