General Contractor in Somerville, MA: What They Do and How to Pick the Right One

If you're searching for a general contractor in Somerville, MA, you probably have a kitchen, a bath, a porch or a whole floor of a triple-decker that needs real work. A general contractor (GC) is the one person responsible for getting it built: price, permits, trades, schedule, inspections and the final walkthrough.

I'm Mateus Magno, and I run Magno & Co out of 55 Davis Square. Here's what a GC actually does here, what makes Somerville different, and how to pick the right one.

What a general contractor does on a Somerville project

• Prices the job with a written, line-item budget, not a number on a napkin.
• Pulls the permits and books every inspection.
• Hires and schedules the trades: licensed electricians and plumbers, carpenters, drywall, tile, painters.
• Orders materials and tracks lead times so the crew isn't standing around.
• Protects your house and your neighbors from dust, debris and noise.
• Closes it out: punch list, final inspections and paperwork.

What makes construction in Somerville, MA different

Somerville is dense, old and full of 1900–1930 wood-frame houses. That shapes every job.

• Triple-deckers. The City says a homeowner can only pull their own building permit on a 1 or 2 family they live in. For 3 family or more, a licensed contractor is required to apply (Somerville ISD Building Division).
• Permits run through Citizenserve. Applications go through the City's Citizenserve portal. The contractor uploads the CSL, the HIC registration for owner-occupied 1–4 unit homes, the signed contract, plans when needed, plus a site safety plan and OSHA certification.
• Lead paint. Almost every house here was built before 1978. In Massachusetts, paid work that disturbs more than 6 square feet of paint per room inside, or more than 20 square feet outside, needs a licensed lead-safe renovation contractor (Mass.gov lead-safe renovation).
• Historic districts. In a local historic district, the Historic Preservation Commission reviews exterior changes visible from a public way before work starts (Somerville Historic Preservation).
• Tight lots, parking and neighbors. Shared driveways, narrow streets in Union Square and East Somerville, and a neighbor six feet away. Dumpster placement, deliveries and work hours need a plan before day one.

More on that process in my Somerville building permit guide.

How to pick a general contractor in Somerville

1. Check the CSL. A Massachusetts Construction Supervisor License covers supervising work regulated by the building code. Look it up on the state's OPSI license search.
2. Check the HIC registration. State law says no contractor may offer or perform residential contracting on an owner-occupied 1–4 family home without registering (M.G.L. c. 142A, s. 9).
3. Get it in writing. Any residential contracting job over $1,000 must have a written contract with start and completion dates, a detailed scope, the total price and a payment schedule (M.G.L. c. 142A, s. 2).
4. Ask about lead-safe work and ask to see the lead-safe license and training certificate.
5. Ask for recent local work in houses like yours.

My full Massachusetts contractor hiring checklist goes deeper.

Red flags

• A big deposit. By law a deposit can't exceed the greater of one-third of the contract price or the cost of special-order materials (c. 142A, s. 2).
• No HIC number on the contract or ads. Advertising without it is a prohibited act (c. 142A, s. 17).
• Work starting before you have a signed copy of the contract. The law says no work begins until you get one.
• Blank spaces in the contract, or a one-line scope like "renovate kitchen."
• Cash only, no address, pressure to sign today.

When you also want an owner's representative

A general contractor builds. An owner's representative sits on your side of the table: checks bids, reviews change orders, watches the schedule and approves payments against real progress. It makes sense for an addition, an ADU, a gut renovation of a triple-decker, or when you live out of state.

I do both, depending on the project. Here's how it works: what an owner's representative is.

Cost: what drives the price

I won't throw out a number without seeing the house. Price in Somerville is driven by scope, size, finishes, hidden structure behind 100-year-old plaster, permits, lead-safe work, and access (parking, stairs, a third floor with no elevator). Every house is different, so I give a written line-item budget after a free walkthrough.

Need a hand?

If you're planning work in Somerville, Cambridge, Medford or anywhere in Greater Boston, book a free walkthrough. I'll look at the house with you and you'll usually have a written line-item budget within 48 hours.

About the author

Mateus Magno is the founder of Magno & Co — a licensed Massachusetts Construction Supervisor (CS-123658), registered Home Improvement Contractor (HIC #220484) and certified Lead-Safe Renovator Supervisor who has renovated and managed over $3 million in projects across Greater Boston.

More about Mateus →