ADU Rules in Holyoke, MA
Holyoke follows the Massachusetts state baseline with local regulations.
State Baseline Only
This page uses Massachusetts state baseline rules. Local setbacks, height limits, and other dimensional standards may vary. Contact your local building department for specifics.
State Baseline: Affordable Homes Act
Up to 900 sq ft or 50% of principal dwelling (whichever is smaller). By-right approval statewide.
Zoning Districts
RES — Default Residential
Default residential zone (state baseline only — specific district not yet researched)
| Type | Approval | Max Size | Height | Parking | Owner Occ. |
|---|---|---|---|---|---|
| Detached ADU | By Right | 900 sq ft | — | 1 space | No |
| Attached ADU | By Right | 900 sq ft | — | 1 space | No |
| Interior Conversion | By Right | 900 sq ft | — | None | No |
Building Department
Holyoke Building Department
20 Korean Veterans Plaza #300, Holyoke, MA 01040, USA
Phone: (413) 322-5600
Explore ADU Topics in Holyoke
ADU Zoning in Holyoke, MA
ADU Permit Process in Holyoke, MA
ADU Costs in Holyoke, MA
ADU Size Limits in Holyoke, MA
ADU Setback Requirements in Holyoke, MA
ADU Parking Requirements in Holyoke, MA
ADU Types Explained in Holyoke, MA
ADU Financing in Holyoke, MA
ADU Timeline in Holyoke, MA
ADU Property Value Impact in Holyoke, MA
ADU Rental Income in Holyoke, MA
Frequently Asked Questions
Are ADUs allowed by right in Holyoke, MA?
Yes. ADUs in Holyoke are approved by right — you submit your plans to the building department and receive a building permit without a public hearing or special permit process. This is guaranteed by the Affordable Homes Act.
What types of ADUs can I build in Holyoke?
Holyoke allows detached, attached, conversion ADUs. With up to 900 sq ft allowed, a detached ADU gives you the most flexibility for a full living space.
Do I need to live on the property to build an ADU in Holyoke?
No. Holyoke does not require owner occupancy — this is a right guaranteed by the Affordable Homes Act. You can rent both your main home and the ADU, making this a pure investment property if you choose.
How big can I build an ADU in Holyoke, MA?
In Holyoke, you can build an ADU up to 900 square feet or 50% of your home's living area, whichever is larger. With 900 sq ft, you have enough room for a full 2-bedroom cottage with a kitchen, bathroom, and living area. This is guaranteed by the Affordable Homes Act.
Does Holyoke have historic district rules for ADUs?
Yes. Holyoke has historically significant areas including Fort Hill Historic District (Northampton, Massachusetts), Holyoke City Hall, Holyoke Heritage State Park, Main Street Historic District, Wistariahurst Museum. If your property is in or near a historic district, your ADU design may require review by the local historical commission for architectural compatibility. This can affect timelines and design choices.
Can I rent out my ADU in Holyoke?
Yes, long-term rentals are allowed for ADUs in Holyoke. However, short-term rentals (like Airbnb) are not currently allowed for ADUs.
How accurate is the ADU data for Holyoke?
The information on this page reflects Massachusetts state baseline rules under the Affordable Homes Act. Holyoke may have additional local requirements that differ from the state baseline. We recommend confirming with your local building department before starting your project.