ADUs bring income and options for Mass. homeowners, but resale value isn't yet clear

"“We weren't hunting for [an ADU], but once we found this house and saw it was there, we felt like it bought us a spectacular amount of optionality,” Matthew said, explaining its rental income helps defray mortgage costs and gives them flexibility to make improvements on the house."

"“One year ago this month, on Feb. 2, 2025, the ADU provisions in Governor Maura Healey's Affordable Homes Act took effect. The law gives most Massachusetts homeowners the right to build ADUs up to 900 square feet on their property without special approval from their town's zoning board.”"

"“A December Globe report found that construction on ADUs has been sluggish since last year, due to factors like permitting obstacles and upfront costs - units can cost between $150,000 and $300,000 to build, per the ADU insights website AduWizard, while more luxe versions surpass $500,000.”"

"“With such a large up-front investment, those considering building ADUs are wondering if their money will be recouped and whether eventual buyers will be interested in them.”"

Accessory dwelling units can be built on many Massachusetts properties up to 900 square feet without special approval under the Affordable Homes Act provisions that took effect Feb. 2, 2025. Homeowners can use ADUs to house aging relatives, generate rental income, and help address the state housing shortage. Some buyers consider ADUs valuable because rental income can offset mortgage costs and provide flexibility for property improvements. Construction has been sluggish due to permitting obstacles and upfront costs, with typical builds estimated between $150,000 and $300,000 and higher-end versions exceeding $500,000. Concerns remain about whether the investment will be recouped and whether future buyers will want ADUs.

Read at Boston.com