Massachusetts Roofing Contractor
Vetting Checklist 2026

The Construction Supervisor License (CSL) is the primary building credential in Massachusetts. It is issued by the Board of Building Regulations and Standards under the Department of Public Safety. Any contractor supervising roofing work must hold a valid CSL. There are three types relevant to roofing:

• Unrestricted CSL (CS-XXXXXX): Allows the holder to supervise all construction work, including complete roof replacements, structural repairs, and new construction roofing. This is the gold standard.
• Restricted CSL (Roofing/Siding): Limits the holder to roofing and siding work specifically. This is sufficient for a standard roof replacement but does not authorize structural modifications.
• Specialty CSL: May cover specific trades. Verify that the specialty scope includes roofing if the contractor holds this type.

To verify a CSL, visit the Massachusetts Board of Building Regulations and Standards license lookup tool. Enter the contractor's name or license number. Confirm the license is active (not expired, suspended, or revoked), the name matches the contractor or company, and the license type covers roofing work. A CSL must be renewed every two years, so check the expiration date carefully.

Red flag:A contractor who claims they "don't need a CSL for roofing" or "my workers have the license" is either misinformed or deliberately deceptive. Massachusetts law requires the supervising contractor to hold the CSL personally.

The Home Improvement Contractor (HIC) Registration is a separate credential from the CSL, administered by the Massachusetts Office of Consumer Affairs and Business Regulation (OCABR). Under M.G.L. Chapter 142A, any contractor performing residential home improvement work (including roofing) must register with OCABR. The HIC registration requires the contractor to carry a $10,000 surety bond, which provides a layer of financial protection for homeowners if the contractor fails to perform or abandons the job.

The HIC registration number format is typically a six-digit number. When you look up the contractor, confirm the registration is active, the business name and address match, and the surety bond is current. The OCABR database also shows any formal complaints or disciplinary actions taken against the contractor, making it a valuable research tool beyond just license verification.

A contractor operating without HIC registration in Massachusetts is violating state law and cannot legally enter into a home improvement contract. Any contract signed with an unregistered contractor is potentially voidable, and the homeowner may have additional legal remedies under the Consumer Protection Act (M.G.L. Chapter 93A).

Key distinction: The CSL demonstrates technical competency to supervise building work. The HIC registration demonstrates compliance with consumer protection requirements. Both are mandatory. A contractor with a CSL but no HIC registration is still operating illegally for residential work.

Insurance verification is non-negotiable for any Massachusetts roofing project. The three types of insurance you must confirm are general liability, workers' compensation, and commercial auto liability. Here are the minimum thresholds and verification procedures:

How to verify:Request a Certificate of Insurance (COI) and insist that you are listed as the "Certificate Holder." Then call the insurance company directly using the phone number on the COI (not a number the contractor provides) to confirm the policy is active and has not lapsed. Insurance fraud in the roofing industry is not rare: contractors may provide expired certificates, certificates from policies they have already canceled, or even fabricated documents.

Massachusetts-specific note:Under M.G.L. Chapter 152, Section 25C, operating without workers' compensation insurance is a criminal offense in Massachusetts. If a contractor tells you their workers are "independent contractors" or "1099 employees" to avoid workers' comp requirements, this is a major red flag. The Massachusetts Department of Industrial Accidents enforces misclassification aggressively. For more on protecting yourself, see our guide on avoiding roofing scams in Massachusetts.

The Better Business Bureau maintains complaint and resolution records for roofing contractors operating in Massachusetts. While BBB accreditation is not required and not all quality contractors choose to pay for it, the complaint database is a valuable free resource. Search for the contractor by business name and location on bbb.org.

What to look for:Focus on the complaint resolution pattern rather than the letter grade alone. A contractor with 5 complaints over 3 years, all resolved to the customer's satisfaction, is demonstrating accountability. A contractor with 2 unresolved complaints is a greater risk. Pay close attention to the nature of complaints: repeated complaints about the same issue (incomplete work, unresponsive to warranty claims, billing disputes) indicate systemic problems rather than isolated incidents.

Also check:The Massachusetts Attorney General's Consumer Complaint database (mass.gov/ago) for formal complaints and the OCABR complaint records that appear alongside the HIC registration lookup from Step 2. Cross-referencing all three databases gives you a complete picture of the contractor's complaint history in Massachusetts.

Red flag:A contractor with no BBB profile at all is not necessarily problematic. But a contractor with an "F" rating or multiple unresolved complaints should be eliminated from consideration immediately. Also search the contractor's name plus "lawsuit," "complaint," or "scam" in a search engine to surface issues that may not appear in formal databases.

Online reviews are the most accessible tool for evaluating a contractor's reputation, but they require careful analysis. The roofing industry has a significant fake review problem, with some contractors purchasing five-star reviews or incentivizing customers to leave positive feedback in exchange for discounts. Here is how to conduct a genuine review audit for Massachusetts roofing contractors:

What to Look For (Positive Signals):

• At least 50 total reviews across Google and Yelp combined, indicating meaningful volume.
• A 4.3 to 4.8 star average -- perfect 5.0 averages with high volume are suspicious.
• Reviews that mention specific details: the crew leader name, the material used, the timeline.
• Reviews from verified Google Local Guides or established Yelp accounts (not brand-new profiles).
• Negative reviews that receive professional, non-defensive responses from the contractor.
• Recent reviews within the last 6 months, showing ongoing active work in Massachusetts.
• Photos attached to reviews showing actual completed Massachusetts projects.

Fake Review Red Flags:

• Clusters of 5-star reviews posted within the same week (review-buying campaigns).
• Generic, vague language: "Great job! Highly recommend!" with no project specifics.
• Reviewer profiles with only 1-2 total reviews, created recently (purchased accounts).
• Reviews that read like marketing copy rather than genuine customer experiences.
• Sudden spike in positive reviews following a period of negative reviews (reputation washing).
• No negative reviews at all despite 100+ total reviews (statistically improbable).
• Reviews mentioning services or locations inconsistent with the contractor profile.

Pro tip:Check the Yelp "Not Recommended Reviews" section at the bottom of the contractor's Yelp page. Yelp's algorithm filters reviews it considers potentially fake or incentivized. If you see dozens of hidden positive reviews, the contractor may have a review manipulation problem. Also search for the contractor on Angi (formerly Angie's List) and HomeAdvisor for additional review data points.

Request at least three references from recent Massachusetts projects, ideally completed within the last 12 months and located in your region of the state. Massachusetts has distinct roofing challenges by geography: coastal communities face salt air and wind exposure, western Massachusetts deals with heavier snow loads, and the Greater Boston area has unique challenges with triple-decker roofing, historic home restrictions, and dense urban access constraints.

What to Ask References:

• Did the project finish on time and on budget, or were there surprise charges?
• How did the crew handle cleanup, including daily magnetic nail sweeps?
• Were there any issues after completion, and if so, how quickly did the contractor respond?
• Was the building permit pulled and the final inspection passed?
• Would you hire this contractor again for your next roofing project?
• How was communication throughout the project? Were you kept informed of progress and delays?
• Did the contractor handle any unexpected issues (rotted decking, damaged flashing) transparently?

Portfolio review:Ask to see photos of 5 to 10 recent Massachusetts projects, ideally including before-and-after documentation. Look for clean lines, consistent shingle alignment, properly installed ridge caps, neat flashing work around chimneys and dormers, and appropriate ice and water shield visible in installation photos. Massachusetts roofs must withstand conditions that expose sloppy work quickly: ice dams form at the eaves if ice and water shield was not installed correctly, and nor'easter winds rip off shingles with inadequate nailing patterns.

Red flag:A contractor who cannot or will not provide Massachusetts-specific references is likely either new to the state market or hiding poor performance. Either way, it is a disqualifying signal. If they claim to have done "hundreds of roofs" but cannot name three recent MA projects with contact information, move on.

Massachusetts law under M.G.L. Chapter 142A requires specific elements in any home improvement contract over $1,000. Beyond the legal minimums, a professional roofing estimate should contain detailed material specifications, itemized costs, and clear scope documentation. Here is what Massachusetts law requires and what you should demand beyond the legal minimum:

Required by Massachusetts Law:

• Contractor name, physical address, phone number, CSL number, and HIC registration number.
• Homeowner name, property address, and project description.
• Total contract price and detailed payment schedule.
• Estimated start date and estimated completion date.
• Description of materials to be used in the project.
• Three-day right of cancellation notice (conspicuously displayed).
• Warranty terms for both materials and workmanship.

Best Practice (Demand These Too):

• Specific material brands, product lines, and colors (e.g., "GAF Timberline HDZ Charcoal" not just "architectural shingles").
• Itemized cost breakdown: materials, labor, tear-off, disposal, permits, and contingencies as separate line items.
• Ice and water shield specification (brand and linear footage) per Massachusetts building code requirements.
• Underlayment specification (synthetic vs. felt, brand and model).
• Ventilation plan: intake and exhaust specifications with NFA calculations.
• Decking replacement pricing per sheet for rotted or damaged decking discovered during tear-off.
• Flashing specification for chimneys, dormers, walls, and valleys.
• Cleanup and debris removal scope, including daily magnetic nail sweeps and dumpster placement.

For a comprehensive breakdown of everything your roofing contract should contain, see our roofing contract checklist guide. For details on Massachusetts-specific payment law protections, read our Massachusetts roofing payment law and consumer rights guide.

Warranty evaluation is particularly important in Massachusetts because the harsh climate accelerates wear on roofing systems. You need both a manufacturer material warranty and a contractor workmanship warranty, and the two serve entirely different purposes.

Massachusetts-specific concern:The number one cause of premature roof failure in Massachusetts is ice dam damage resulting from improper installation of ice and water shield, inadequate ventilation, and insufficient insulation. These are workmanship issues, not material defects. A 50-year manufacturer warranty will not cover ice dam damage caused by the installer's failure to properly address Massachusetts building code requirements for ice and water shield (minimum 24 inches past the interior wall line per 780 CMR). This is why the workmanship warranty matters as much as or more than the manufacturer warranty in Massachusetts.

Ask specifically:What is the workmanship warranty duration? Is it transferable if you sell the home? What does it cover and exclude? Is the warranty backed by the contractor's business or by a third-party warranty company? A 25-year workmanship warranty from a contractor who has been in business for 2 years is not worth much if they close in year 3.

Manufacturer certifications are the single most reliable indicator of contractor quality and training. The top three shingle manufacturers offer elite certification programs that require contractors to meet rigorous standards. Here is what each certification means for Massachusetts homeowners:

For a detailed comparison of these manufacturers and their certification programs in Massachusetts, see our GAF vs. CertainTeed certified roofing in Massachusetts guide.

In Massachusetts, the person who pulls the building permit is legally responsible for ensuring the work meets the Massachusetts State Building Code (780 CMR). For residential roofing, the contractor holding the Construction Supervisor License (CSL) should pull the permit. This is not optional. Massachusetts requires building permits for virtually all roof replacements, and the local building inspector will verify code compliance during the final inspection.

Massachusetts building code requirements for roofing (780 CMR) include:

• Ice and water shield installed from the eave edge to at least 24 inches past the interior wall line.
• Proper underlayment over the entire roof deck (synthetic preferred over felt for Massachusetts climate).
• Correct nailing patterns per manufacturer specifications and wind zone requirements.
• Adequate roof ventilation meeting the 1:150 or 1:300 ratio requirement depending on configuration.
• Proper flashing at all penetrations, valleys, walls, and intersections.
• Maximum two layers of roofing material (complete tear-off required if two layers already exist).
• Drip edge installation at eaves and rakes per code.

Critical: Your written contract should state explicitly that the contractor is responsible for pulling the building permit and scheduling the final inspection. If a contractor suggests that you pull the permit yourself (as the homeowner), this is a red flag. It often means they lack a valid CSL or are trying to avoid accountability for code compliance. Never pull a permit for a contractor. The person on the permit is the one the building inspector holds responsible.

Massachusetts law restricts the amount a home improvement contractor can collect upfront. Under M.G.L. Chapter 142A, the initial deposit cannot exceed one-third of the total contract price. This "one-third rule" is a critical consumer protection that prevents contractors from collecting large deposits and then disappearing or performing substandard work without financial accountability.

Recommended Payment Schedule for Massachusetts Roofing:

Never pay the final installmentuntil you have personally inspected the completed work, confirmed that the building permit has passed final inspection, and received lien waivers from the contractor confirming that all material suppliers and subcontractors have been paid. A mechanics' lien in Massachusetts can be placed on your property by an unpaid supplier even if you have paid the contractor in full.

For detailed guidance on payment protections, see our Massachusetts roofing payment law and consumer rights guide.

Before you sign any roofing contract in Massachusetts, confirm that it contains all 15 of these essential clauses. Missing any of the first seven (which are legally required under M.G.L. Chapter 142A) may make the contract unenforceable and constitutes a potential violation of the Massachusetts Consumer Protection Act.

For a complete, in-depth guide to roofing contracts, see our roofing contract checklist.