How to Hire a General Contractor in the Boston Area (Checklist)
· By Alexandre Afonso

Hiring a general contractor is one of the bigger decisions a homeowner makes, and it is easy to get wrong. The lowest bid can turn into the most expensive project once change orders and rework pile up, and an unlicensed or uninsured contractor can leave you exposed if something goes wrong on your property.
The good news is that most of the risk can be screened out up front with a short checklist. In Massachusetts there are two credentials that matter, plus a handful of verification steps that separate a legitimate outfit from a fly-by-night one. This is the same due diligence we encourage every homeowner in the Greater Boston area to run, including on us.
Here is exactly what to check, in the order that saves you the most trouble, before you sign anything or hand over a deposit.
Understand the two Massachusetts credentials: HIC and CSL
In Massachusetts, residential contractors deal with two separate things and homeowners often confuse them. The Home Improvement Contractor (HIC) registration is what a contractor needs to do residential remodeling work, and it also brings you into the state Guaranty Fund for covered disputes. The Construction Supervisor License (CSL) is a licensed individual who is qualified to pull building permits and oversee structural work.
A serious remodeler will carry both. Mass Services & Home Improvement holds HIC #217519 and CSL #122193. You can and should verify any contractor number yourself through the state, and any legitimate contractor will hand you their numbers without hesitation. If someone dodges the question, that is your answer.
Verify the license numbers yourself
Do not take a business card at face value. Massachusetts lets you look up HIC registrations and CSL licenses to confirm the number is real, active, and matches the name and address you were given. It takes a few minutes and it is the single most protective step on this list.
While you are at it, check that the name on the registration matches the entity that will sign your contract and cash your checks. Mismatches between the licensed name and the invoicing name are a classic red flag.
Confirm insurance, and get it in writing
Ask for a certificate of insurance showing general liability and, if the contractor has employees, workers compensation coverage. Liability protects your property if something is damaged during the work. Workers comp matters because if an uninsured worker is hurt on your property, you can end up on the hook.
Do not just take a verbal "yes, we are insured." Ask for the certificate, and for larger jobs you can ask to be listed so you are notified if the policy lapses. A reputable contractor expects this request.
Read the contract before you sign
Massachusetts requires home improvement work over a set dollar threshold to be in a written contract, and there are limits on how large a deposit a contractor can ask for up front. Be wary of anyone demanding a huge deposit or the whole amount before work begins.
A solid contract spells out the scope, the materials and allowances, the payment schedule tied to milestones (not the calendar), a start and rough completion window, how change orders are handled, and the warranty. If the "contract" is a one-line total on a scrap of paper, slow down.
Check references, reviews, and real work
Ask for a few recent references and actually call them. The useful questions are about communication, whether the job stayed on budget, how change orders and problems were handled, and whether the crew cleaned up. Read the online reviews too, and look for how the contractor responds to a critical one, that tells you a lot.
Where possible, ask to see photos of completed projects similar to yours, or a job in progress. A contractor who does quality work is usually glad to show it.
Watch for the red flags
A few patterns reliably signal trouble: pressure to decide today, cash-only or a demand for full payment up front, no written contract, no verifiable license number, a bid dramatically lower than everyone else, and door-to-door "we were in the neighborhood" solicitation. Any one of these is a reason to pause.
The flip side is reassuring. A contractor who gives you their license numbers, provides a certificate of insurance, puts everything in a clear written contract, and ties payments to milestones is showing you exactly how the project will run. That transparency is the whole point of this checklist.
Frequently asked questions
- What is the difference between an HIC and a CSL in Massachusetts?
- The HIC (Home Improvement Contractor) registration lets a contractor perform residential remodeling and brings the homeowner into the state Guaranty Fund for covered disputes. The CSL (Construction Supervisor License) is held by an individual qualified to pull building permits and supervise structural work. A serious remodeler carries both. Ours are HIC #217519 and CSL #122193.
- How do I verify a contractor is licensed in Massachusetts?
- Massachusetts provides public lookups for HIC registrations and CSL licenses. Ask the contractor for their numbers, then confirm through the state that they are active and match the business name. Any legitimate contractor will give you the numbers without hesitation.
- How much of a deposit should a contractor ask for?
- Massachusetts limits how large an up-front deposit a home improvement contractor can require, and payments after that should be tied to project milestones. Be cautious of anyone demanding a very large deposit or the full amount before any work begins.
- Do I really need a written contract for a home remodel?
- Yes. Massachusetts requires a written contract for home improvement work above a set dollar amount, and it protects both sides. A good contract covers scope, materials, a milestone-based payment schedule, timeline, change orders, and warranty. Avoid handshake-only arrangements for anything but the smallest jobs.
- Should the general contractor be insured?
- Absolutely. Ask for a certificate of insurance showing general liability, plus workers compensation if the contractor has employees. Liability covers damage to your property, and workers comp protects you if a worker is injured on site. Get it in writing rather than a verbal assurance.
- What are the biggest red flags when hiring a contractor?
- Pressure to sign today, cash-only or full payment up front, no written contract, an unverifiable license, a bid far below everyone else, and unsolicited door-to-door pitches. Any of these is a reason to slow down and verify before committing.
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