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ADU Construction · MassachusettsADU Construction Contractor in Massachusetts
Build More Space and Possibility Into Your Property. Create a private living space for family members, guests, rental use, work, or long-term flexibility with a professionally planned and built accessory dwelling unit.
- 5.0 on Google · 49 reviews
- Licensed and insured
- Permits handled for you
Get your free estimate
Tell us about your project. We will call you to set up a visit.
Prefer to talk? Call (781) 600-2622
- 5.0 on Google, 49 reviews
- Licensed and insured
- Permits and inspections handled
- Free estimate
Create More Living Space Without Leaving Your Property
Your property may already have the potential to provide the additional space your family needs.
An accessory dwelling unit can create a separate and functional living area for:
Instead of moving or making major compromises inside the existing home, an ADU can help you use your property more effectively.
- Aging parents
- Adult family members
- Long-term guests
- Independent living
- Rental use
- A private home office
- A studio or creative workspace
- A caregiver
- Flexible future use
Forma Construction helps homeowners across the North Shore, Greater Boston, and surrounding Massachusetts communities plan and build custom ADUs designed around their property, lifestyle, and future needs.
The ADU that fits your property
Detached ADU
A separate structure on the same property as your home.
Attached ADU
A private unit connected to the primary home.
Garage conversion
An ADU created from an existing garage.
Above-garage ADU
A living space built above a garage.
ADU within the home
A unit developed within an existing part of the property.
Studio or full residence
From a compact studio to a complete private residence with bedroom, bathroom, kitchen and living space.
Great form demands a solid structure.
In construction, the form is the mold that receives the concrete and defines its limits. It is where every solid project begins, and it is how we work.
Quality work done right
We focus on precision, clean execution and long-lasting results, not shortcuts.
Licensed and insured
Your home is protected. Our team follows all standards for safety, compliance and reliability.
Clear communication
You always know what is happening in your project. No confusion, no surprises.
No hidden costs
Transparent pricing from the beginning, so you can plan your investment with confidence.
Clean, organized job sites
We respect your home and keep every project clean, safe and well managed.
On time and on budget
We deliver quality construction work on time and on budget, always mindful of your budget.
Forma ConstructionProject sequence
How it worksFrom the first call to the final walkthrough
Talk to us
Tell us about your home and what you want to build. We answer questions and set up a visit.
Free estimate
We see the space, listen to your goals and give you a clear estimate, so you can plan with confidence.
Plans and permits
We take care of the permits, inspections and approvals your town requires.
Construction
Our team builds with care, keeps the job site clean and keeps you informed every step of the way.
Final walkthrough
We walk the finished project with you and make sure every detail is right.
Worried about permits? We handle everything for you.
Town permits, inspections and approvals are part of our job, not yours. You get a project that is done right and signed off.
Licensed and insured
- Permits, inspections and approvals managed by us
- Clear communication from start to finish
- Transparent pricing from the beginning
- Clean, organized job sites
What homeowners say
5.049 reviews on Google
“We are very happy with Forma Construction, they did a fantastic job with our home addition. The team was professional, the quality of the work is excellent, and they got the details just right matching the siding, windows, etc. if you need a contractor for an addition, call these guys.”
“They did an incredible job building our ADU. The team made the whole process stress-free and really nailed all the details we wanted. It’s the perfect extra space for our family, and the quality of the build is top-notch. If you’re thinking about adding an ADU, these are definitely the people to call!”
“Excellent experience with Forma Construction for my full gut renovation. The team was professional, reliable, and delivered high-quality work with great attention to detail. Communication was clear throughout the entire process. I highly recommend Forma Construction for any home remodeling project.”
Frequently asked questions
What does ADU mean?
ADU means accessory dwelling unit. It is a secondary living space located on the same property as a primary residence. Depending on the property and design, it may be detached, attached, created from an existing structure, or built above a garage.
What can an ADU be used for?
An ADU may be used for family members, guests, independent living, aging parents, a home office, a caregiver, rental purposes, or other flexible residential uses. The intended use should be considered during planning because it can affect the layout, utilities, privacy, and project requirements.
What is the difference between an ADU and a home addition?
A home addition typically expands the primary residence. An ADU is generally designed as a more independent secondary living space and may include its own sleeping area, bathroom, kitchen, utilities, and entrance.
Can I convert my garage into an ADU?
Possibly. The existing structure, ceiling height, foundation, condition, utilities, insulation, access, parking, and local requirements must be evaluated first.
Can I build an ADU above my garage?
It may be possible, but the existing garage structure and foundation must be reviewed to determine whether they can support another level. Zoning, height limitations, access, utilities, and structural requirements must also be considered.
Can an ADU have a full kitchen and bathroom?
Many ADUs are designed with a kitchen and bathroom to provide more independent living. The applicable plumbing, electrical, ventilation, construction, and local requirements need to be included in the project planning.
Do I need permits to build an ADU?
ADU projects generally require building permits. Depending on the scope, additional approvals or permits may be needed for electrical, plumbing, mechanical systems, zoning, utilities, or other work. The exact requirements depend on the municipality and property.
Do you offer free estimates?
Yes. Fill out the form or call us at (781) 600-2622 and we will set up a visit to see your space and prepare a free estimate.
Do you take care of permits?
Yes. We handle the permits, inspections and approvals your town requires, so you do not have to manage the paperwork.
Planning more than one project?
- 01Home AdditionsRoom, suite, second-story and sunroom additions that look like part of the original home.
- 02Kitchen RemodelingLayout, cabinets, countertops, lighting and storage designed around the way you cook and gather.
- 03Bathroom RemodelingCustom showers, tub-to-shower conversions, vanities and tile, built for daily comfort.
- 04Basement RenovationFamily rooms, offices, guest suites and bathrooms in the space below your home.
- 05Attic RenovationBedrooms, suites, offices and dormers that turn the attic into part of your home.
- 06Deck ConstructionComposite and wood decks, stairs, railings and pergolas designed around your yard.
- 07Siding InstallationVinyl, fiber cement and wood siding, trim, soffit and fascia that protect and refresh your home.
- 08Roof ReplacementComplete roof replacement, repairs, flashing, ventilation and skylights.
Ready to talk about your ADU project?
Tell us a little about your home. We will call you to set up a visit and prepare a clear estimate.
- Free estimate
- Licensed and insured
- We handle permits and inspections
Or call us now:
(781) 600-2622
Get your free estimate
Tell us about your project. We will call you to set up a visit.
Prefer to talk? Call (781) 600-2622