Affordable ADU Solutions Across Massachusetts
Herks Carpentry specializes in designing and building high-quality Accessory Dwelling Units (ADUs) in Massachusetts. Our experienced team ensures your ADU project, from concept to completion, is streamlined, compliant with state regulations, and maximizes your property’s potential.
Why ADUs Are a Smart Choice for Massachusetts Homeowners
Meet the Commonwealth’s Housing Goals
Massachusetts has enacted the Affordable Homes Act (Chapter 150, 2024), enabling ADUs up to 900 square feet to be built “by right” in single-family zoning districts. This law lifts the requirement for special zoning approvals, though ADUs must still meet local building codes and permit rules.
Responding to the Housing Crunch
As of July 1, 2024, Massachusetts had an estimated 7,136,171 residents, the state’s highest count on record, per Data Census. With over 56% of homes being single-family, there’s enormous potential for ADU development. The state projects ADUs could deliver around 8,000 new homes over five years, addressing part of its 40,000-unit housing goal.
Types of ADUs We Build
Herks Carpentry delivers bespoke solutions tailored to your property and goals:
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Attached ADUs: Built within or connected to your existing home with independent living space.
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Detached ADUs: Standalone cottages in your yard, offering full privacy.
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Garage Conversions: Repurpose existing garages into fully functional units.
Every structure includes safe egress, a separate entrance, and compliance with state building codes.
Our Streamlined ADU Process
Design & Permitting
We begin with a tailored design consultation that aligns with your needs, whether rental income, in-law suites, or multigenerational living. We handle all permitting, ensuring full compliance with state and local codes.
Construction and Build-Out
Our certified carpenters bring decades of professional experience. We manage every detail, from foundations and framing to plumbing, electric systems, finishes, and landscaping.
Final Inspection & Support
After construction, we coordinate final inspections and guide you through any municipal or utility-related post-build processes.
Cost, Financing & ROI (Without Quoting Prices)
ADU expenses in MA vary strongly depending on location, design, and complexity. Costs may include:
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Electrical panel upgrades
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Site work (grading, tree removal)
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Plumbing, HVAC, and foundation options
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Interior finishes and appliances
These units often generate rental income or support family living, boosting long-term property value. Financing options may include construction loans or home equity lines; we can connect you to trusted local lenders.
Regional Know-How
Herks Carpentry understands local zoning and permitting across the Greater Boston metro, including municipalities in Middlesex, Suffolk, and Norfolk counties. We’re also active across Western and Central Massachusetts, serving Springfield, Worcester, and other cities.
FAQs Homeowners Ask
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Do I need a special permit to build an ADU in MA?
No, Massachusetts law allows ADUs up to 900 sq ft in single-family zones without discretionary zoning approval. However, building permits and compliance with local rules (setbacks, lot coverage) are still required.
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Is the ADU counted as part of my housing inventory?
Yes, once built and occupied, it may count toward your municipality’s subsidized housing inventory, if eligibility requirements are met.
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How long will construction take?
Typical ADU projects take 9–12 months from design through final inspection and occupancy, depending on scale and permitting timelines.
Why Choose Herks Carpentry?
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Local Expertise: Deep familiarity with Massachusetts ADU laws and local regulations.
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Full-Service Experience: From design to final walkthrough, we manage every step.
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Quality Craftsmanship: Expert carpenters deliver reliable, durable results.
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Customized Solutions: Styles and designs tailored to your property's character and your goals.
Let’s Plan Your ADU
Boost your home’s value and versatility. Reach out to Herks Carpentry today for a free consultation. We’ll discuss design ideas, feasibility, and next steps, without quoting specific prices upfront.