ADU Builders in MetroWest Massachusetts
Design, Permit & Build Your Accessory Dwelling Unit — From Concept to Keys
Massachusetts ADU Experts — Full-Service Design & Build
Regulus Construction is a licensed, full-service ADU builder serving MetroWest Massachusetts and surrounding communities. We handle every phase of your accessory dwelling unit project — from initial feasibility assessment and architectural design through municipal permitting, construction, and final inspection.
Whether you are building a detached backyard cottage, converting an existing garage, or adding an attached in-law suite, our team brings deep knowledge of Massachusetts ADU regulations, local zoning bylaws, and the building code requirements that vary from town to town across our service area.
Since Massachusetts passed the ADU-by-right legislation, homeowners across the state have gained new opportunities to add living space, generate rental income, or house aging family members close to home. Regulus Construction has been at the forefront of this movement, helping families navigate the process with confidence.
Types of ADUs We Design & Build
Detached Backyard ADU
A standalone cottage built in your backyard, offering complete privacy and independence. Ideal for rental income, a home office, or multigenerational living.
Garage Conversion ADU
Transform your underused garage into a fully finished living space. A cost-effective way to add an ADU without new foundation work.
Attached In-Law Suite
A seamless addition to your existing home with its own private entrance, kitchen, and bathroom. Perfect for aging parents or adult children.
Why Homeowners Choose Regulus Construction for ADUs
- Licensed & insured Massachusetts general contractor
- Deep expertise in local ADU zoning bylaws across 40+ towns
- Full-service: design, engineering, permitting & construction
- Transparent fixed-price contracts with no hidden fees
- Energy-efficient builds meeting MA Stretch Code standards
- Dedicated project manager from start to finish
ADU Builders — Towns We Serve
Click your town below to learn about local ADU zoning requirements, project costs, and how Regulus Construction can help you build.
Ready to Build Your ADU?
Schedule a free consultation with our ADU specialists. We will assess your property, review local zoning, and provide a detailed project estimate — all at no cost.