Cecilio Builders designs and builds home additions and accessory dwelling units across MetroWest Massachusetts from the first site plan to the final walkthrough. One crew, start to finish.
Every project starts with a real site plan so it clears setbacks and doesn’t block your neighbor’s (or your own) sunlight.
Fully licensed & Insured in Massachusetts
Two brothers, since day one
MetroWest & Greater Boston
Between closing costs, a higher mortgage rate on a new house, and MetroWest’s tight inventory, adding on or adding a second unit is often the faster, cheaper way to get the space you need. Massachusetts even made it easier: since February 2025, most single-family lots statewide can add an accessory dwelling unit by right, no special permit required.
Avoid high mortgage rates and closing costs on a new home.
Avoid high mortgage rates and closing costs on a new home.
Keep your community, schools, and lifestyle you love.
ADUs are allowed by right on most single-family lots statewide.
Whether you need more room for your family or a separate space with its own purpose, we help you make better use of the property you already own. Explore the two ways we can add space, function, and long-term value to your home.
A second story, a bump-out kitchen, a family suite, or a sunroom built to match your home’s roofline, siding, and character, not just bolted onto the side of it.
A basement, garage, attached, or backyard ADU built as a fully self-contained unit under Massachusetts’ new statewide by-right ADU law.
Additions and ADUs are our specialty, but they’re not the only way we help Massachusetts homeowners get more from the space they already have. From kitchens and bathrooms to finished basements and new decks, we handle the projects that make a home more functional, comfortable, and complete.
A major home project has a lot of moving parts. We keep them under one roof. From the first measurements and drawings to permits, construction, and the final walkthrough, Cecilio Builders manages each stage so you always know what’s happening, what comes next, and who’s responsible for getting it done.
We walk the property, measure the lot, and talk through what you actually need.
A real site plan setbacks, sunlight, and how the addition or ADU sits on your lot.
We file with your building department and handle inspections along the way.
Foundation, framing, mechanicals, and finishes one crew, no subcontractor hand-offs.
We walk the finished space with you before we call the job done.
Good construction is more than what you see when the job is finished. It’s clear communication, careful work, fair pricing, and the right materials from day one. That’s what we bring to every project.
You can see every step of the job no surprise change orders after the fact.
We’re thorough with the small stuff, not just the framing and drywall.
You get what you pay for honest pricing, no padded estimates.
We use durable, finish-grade materials, not the cheapest option available.
Good construction is more than what you see when the job is finished. It’s clear communication, careful work, fair pricing, and the right materials from day one. That’s what we bring to every project.
Free, no-pressure estimate we’ll walk the property and tell you what’s realistic for your lot.
