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ADU Setback Requirements in New Marlborough, MA

ADU setback requirements in New Marlborough follow state baseline rules.

ADU setback rules for New Marlborough, Massachusetts. Front, side, and rear setback distances, plus height limits and lot coverage restrictions.

Data verified as of March 2, 2026
State Baseline Only — Local Details Not Yet Researched

ADU Regulations in New Marlborough

New Marlborough follows the Massachusetts state baseline under the Affordable Homes Act. This means all Massachusetts state-level ADU rights apply — including by-right approval, no owner occupancy requirement, and standardized size limits. New Marlborough may also have additional local regulations that supplement the state baseline.

Planning Your ADU Placement

When planning your ADU in New Marlborough, start by mapping your property boundaries and subtracting the required setbacks on each side. The remaining area is your buildable envelope. Consider the location of existing structures, utility connections, access paths, and landscaping when choosing the best spot for your ADU.

Important: State Baseline Data

The information on this page reflects Massachusetts state baseline rules. New Marlborough may have additional local requirements. We recommend confirming with your local building department before starting your project.

New Marlborough ADU Rules at a Glance

Max Size

900 sq ft

% of Home

50%

Parking

1 space(s)

Approval

BY RIGHT

Owner Occupancy

Not required

Rental Allowed

Yes

Short-Term Rental

Not allowed

New Marlborough Building Department

Marlborough Inspectional Services

140 Main St, Marlborough, MA 01752, USA

Phone: (508) 460-3776

Frequently Asked Questions

Do ADU setbacks differ from the main house in New Marlborough?

ADU setback requirements in New Marlborough may differ from those for the main house. ADUs often have reduced setback requirements to make them feasible on existing lots. The Affordable Homes Act sets minimum standards that New Marlborough must allow.

Can I get a setback variance for my ADU in New Marlborough?

Setback variances are possible but not guaranteed in New Marlborough. You would need to apply to the zoning board of appeals and demonstrate a hardship — such as an unusually shaped lot or topographic constraints. Before pursuing a variance, verify your exact property dimensions against the setback requirements.

How accurate is the ADU data for New Marlborough?

The information on this page reflects Massachusetts state baseline rules under the Affordable Homes Act. New Marlborough may have additional local requirements that differ from the state baseline. We recommend confirming with your local building department before starting your project.

Where can I find all ADU regulations for New Marlborough?

Visit our complete ADU rules page for New Marlborough, MA for a full overview of zoning, permits, size limits, setbacks, parking, and costs. We cover all Massachusetts municipalities with data sourced from local ordinances and state law.

Check Your Address

See exactly what ADU rules apply to your specific property in New Marlborough.