Springfield implements new law easing accessory dwelling unit regulations

The Springfield City Council Committee of the Whole meeting on March 10, 2025, focused on the implementation of new regulations regarding Accessory Dwelling Units (ADUs) following a law that took effect in February. This law, signed in August 2004, aims to simplify the process for homeowners wishing to create ADUs, which are secondary housing units on residential properties.

Key changes introduced by the law include the removal of the requirement for homeowners to obtain a special permit to establish an ADU. Additionally, the law no longer mandates that either the primary residence or the ADU be owner-occupied, a significant shift from previous regulations that often required homeowners to live on-site.

The law also specifies size limitations for ADUs, allowing them to be either half the gross floor area of the primary dwelling or a maximum of 900 square feet, whichever is smaller. This flexibility enables various forms of ADUs, including converted basements, attached garages, or even standalone tiny houses, provided they meet existing zoning requirements such as setbacks and height restrictions.

In Springfield, ADUs are permitted only in single-family residential zones, specifically in areas designated as Residence A and Residence A1. The committee noted that there has been growing interest from residents about the potential for creating ADUs, with inquiries about converting garages and basements. However, as of the meeting date, only one homeowner had successfully submitted an application and received approval for an ADU.

The discussion highlighted the law's intent to promote housing options and address local housing needs, reflecting a broader trend in Massachusetts to enhance housing availability through more flexible zoning laws. The committee's ongoing engagement with residents indicates a commitment to facilitating the understanding and implementation of these new regulations.