New Hampshire
Builders and General Contractor Insurance
Call Us: 603-766-3733
New Hampshire's construction sector is booming, and the numbers tell the story. The state
issued permits for 5,822 housing units in 2024, the highest annual total since 2005, and the median single-family home price has climbed to a record $535,000. That kind of growth means more projects, more crews on job sites, and more financial exposure for builders and general contractors operating across the Granite State. Getting the right insurance isn't just a box to check: it's the difference between surviving a bad day on a job site and watching your business collapse under a single claim. This guide to contractor insurance in New Hampshire covers the essential policies, from GL and workers' comp to commercial auto and industry-specific coverage, so you can build with confidence instead of crossing your fingers.
Essential Insurance Requirements for New Hampshire Contractors
General Liability: Protecting Against Third-Party Claims
General liability, or GL, is the foundation of any contractor's insurance portfolio. It covers third-party bodily injury, property damage, and personal injury claims that arise from your operations. Think of a scenario where a pedestrian trips over materials left outside your job site, or a subcontractor accidentally damages a neighbor's fence during excavation. Without GL, those costs come straight out of your pocket.
Most New Hampshire municipalities and project owners require a minimum of $1 million per occurrence and $2 million aggregate before they'll let you bid on work. Residential clients are increasingly asking for proof of coverage too, especially on projects where home values regularly exceed $500,000. Your GL premium depends on your trade classification, annual revenue, and claims history. A framing contractor will pay significantly more than a finish carpenter because the risk profile is different.
One common mistake: assuming your GL policy covers completed operations indefinitely. Many policies have sunset clauses or require separate completed operations coverage. If a deck you built two years ago fails and injures someone, you need that tail coverage to respond. An agency like Avery Insurance, which has spent over 125 years helping New Hampshire businesses identify gaps like this, can walk you through the fine print before it becomes a problem.
NH Workers' Compensation Laws and Compliance
New Hampshire law requires workers' compensation insurance for any employer with one or more employees. There are very few exceptions, and independent contractor classifications get scrutinized heavily by the state. If a worker you classified as a subcontractor gets hurt and doesn't carry their own coverage, you could be on the hook for their medical bills and lost wages.
The good news is that New Hampshire's workers' comp costs are relatively moderate. Estimated employer costs sit at $0.76 per $100 of covered wages, though your actual rate will vary based on your classification code and experience modification rate. A roofing contractor, for example, will pay far more per $100 than an electrician because falls from heights generate more severe claims.
Penalties for non-compliance are steep. The state can issue stop-work orders, and you may face fines of up to $2,500 per day for each day you operate without coverage. Criminal charges are also possible for repeat offenders. Don't gamble on this one.
Commercial Auto Insurance for Construction Fleets
If your business owns, leases, or regularly uses vehicles for work purposes, you need commercial auto insurance. Personal auto policies almost always exclude vehicles used for business, which means your pickup loaded with tools and materials isn't covered under your personal policy when you're driving to a job site.
Commercial auto insurance in New Hampshire costs an average of $238 per month, or roughly $2,858 annually per vehicle. That cost scales with fleet size, driver records, vehicle types, and the radius you operate within. Dump trucks and heavy equipment haulers cost more to insure than standard pickups.
Here's a comparison of common commercial auto coverage components:
| Coverage Type | What It Covers | Typical Minimum |
|---|---|---|
| Liability | Bodily injury and property damage you cause | $500,000 CSL |
| Physical Damage | Collision and comprehensive for your vehicles | Actual cash value |
| Hired/Non-Owned Auto | Vehicles you rent or employees' personal vehicles used for work | $1,000,000 |
| Uninsured Motorist | Accidents caused by drivers without insurance | Matches liability limits |
| Medical Payments | Medical costs for you and passengers regardless of fault | $5,000 - $10,000 |
Don't overlook hired and non-owned auto coverage. If an employee runs an errand in their personal car and causes an accident, your business can be named in the lawsuit.
By: Tod O’Dowd, CIC, CAPI
President of Avery Insurance Agency
Industry-Specific Policies for Builders and Developers
Builders Risk: Safeguarding Projects Under Construction
Builders risk insurance covers structures during construction against perils like fire, wind, theft, and vandalism. Your GL policy does not cover the building itself: it only covers third-party claims. If a fire destroys a half-built custom home, builders risk is what pays to rebuild it.
Policies are typically written for the duration of the project and cover materials, fixtures, and equipment that become part of the structure. With New Hampshire's record median home price of $535,000, a single uninsured loss on a residential project could be devastating. On commercial projects, the stakes are even higher.
Pay attention to coverage for soft costs like architect fees, permit expenses, and loan interest that accumulate if a covered loss delays your project. Not every builders risk policy includes these automatically, so ask specifically.
Inland Marine Insurance for Tools and Mobile Equipment
Standard commercial property insurance covers items at your business location. But construction equipment rarely stays in one place. Inland marine insurance protects tools, equipment, and materials in transit or stored at job sites.
A typical policy covers items like generators, scaffolding, laser levels, and specialty tools. If someone breaks into your job trailer overnight and steals $30,000 worth of equipment, your commercial property policy likely won't respond because the loss didn't happen at your listed business premises. Inland marine fills that gap.
Scheduling high-value items individually on your policy ensures they're covered at replacement cost rather than a depreciated value. For contractors running multiple crews across different sites, this coverage is essential.
Professional Liability and Errors & Omissions
If your firm provides any design, engineering, or consulting services, professional liability (often called errors and omissions, or E&O) protects you against claims of negligent work, design flaws, or failure to meet professional standards. This is distinct from GL, which covers physical injury and property damage rather than financial losses caused by professional mistakes.
Design-build contractors face particular exposure here. If you designed a foundation system that later fails, the homeowner's claim isn't about a slip-and-fall: it's about your professional judgment. GL won't cover that. E&O will.
Managing Risk and Liability in the NH Construction Industry
Subcontractor Insurance Verification and Certificates
The New Hampshire Insurance Department has been vocal about this issue. Their guidance to homeowners states that taking a few minutes to confirm the right coverage before work begins can help Granite Staters avoid costly disputes and out-of-pocket losses. The same principle applies tenfold when you're a general contractor hiring subs.
Every subcontractor on your project should provide a certificate of insurance showing current GL, workers' comp, and auto coverage. Require that your company is listed as an additional insured on their GL policy. This gives you direct rights under their policy if a claim arises from their work.
Don't just collect certificates and file them away. Verify them with the issuing agency, confirm the policy dates cover your project timeline, and set calendar reminders to re-verify on longer projects. If a sub's policy lapses mid-project and one of their workers gets hurt, that claim often flows uphill to you.
Surety Bonds and Licensing Requirements
New Hampshire doesn't have a statewide contractor licensing requirement, but many municipalities do. Some towns require contractors to post surety bonds before issuing permits, especially for public works projects. A surety bond guarantees that you'll complete the project according to contract terms, and it protects the project owner if you default.
Three common bond types in construction are bid bonds, performance bonds, and payment bonds. Public projects frequently require all three. Your bonding capacity depends on your financial statements, credit history, and track record of completing projects. Building a relationship with a surety company early, even before you need bonds, strengthens your position when a bonded project comes along.
Impact of Project Scope and Annual Revenue
Insurance carriers price contractor policies based largely on annual revenue and payroll. A general contractor grossing $5 million annually will pay substantially more than one grossing $500,000, simply because higher revenue typically correlates with more job sites, more workers, and more exposure.
Project type matters too. Construction employment in New Hampshire grew 12.7 percent between 2019 and 2023, and that growth has brought more complex projects into the market. Contractors taking on multi-story commercial builds face different risk profiles than those focused on single-family renovations.
Geographic concentration also plays a role. Contractors working in densely populated areas like Manchester or Nashua may see different rates than those building in rural Carroll County.
Claims History and Experience Modification Rates
Your experience modification rate, or EMR, is a multiplier applied to your workers' comp premium based on your claims history compared to other businesses in your classification. An EMR of 1.0 is average. Below 1.0 means you're better than average and pay less. Above 1.0 means you're worse, and you pay more.
A single serious claim can push your EMR above 1.0 for three years. That translates to thousands of dollars in additional premium annually. Investing in safety programs, proper training, and return-to-work protocols isn't just good practice: it directly affects your bottom line.
Some project owners won't hire contractors with an EMR above 1.0 or 1.2. Your claims history literally determines whether you can compete for certain work.
Securing Comprehensive Coverage for Your NH Business
New Hampshire's construction market is growing fast, and the financial risks grow right alongside it. A single uncovered claim, whether it's a worker injury, a vehicle accident, or a project fire, can undo years of hard work. The right combination of GL, workers' comp, commercial auto, builders risk, and specialty policies creates a safety net that lets you focus on building rather than worrying.
Avery Insurance Agency takes a consultative approach to contractor coverage, identifying vulnerabilities specific to your operations rather than selling a one-size-fits-all package. With roots in New Hampshire dating back to 1899, they understand the local construction market and the risks that come with it. Reach out to their team to review your current coverage and make sure you're not leaving gaps that could cost you everything.
Frequently Asked Questions
Does New Hampshire require contractors to carry general liability insurance? The state doesn't mandate GL by law, but most municipalities, project owners, and clients require it before you can bid or start work. Operating without it is a serious financial risk.
How much does workers' comp cost for NH contractors? Rates start around $0.76 per $100 of payroll but vary significantly by trade. Roofers and framers pay considerably more than finish carpenters or painters due to higher injury rates.
Do I need commercial auto if I only have one work truck? Yes. If you use any vehicle for business purposes, your personal auto policy almost certainly excludes coverage during work use. Even one truck needs a commercial policy.
What's the difference between builders risk and general liability? GL covers third-party injury and property damage claims. Builders risk covers the structure you're building against perils like fire, theft, and storm damage. They protect entirely different things.
Can I be held liable for an uninsured subcontractor's injuries? Absolutely. If a sub doesn't carry workers' comp and one of their employees gets hurt on your site, you may be held responsible for medical costs and lost wages under New Hampshire law.
ABOUT THE AUTHOR:
Tod O’Dowd, CIC, CAPI
I'm the President of Avery Insurance Agency, a family-owned independent agency serving individuals and businesses across New England and in 40+ states. With a hands-on, consultative approach to personal and commercial risk, I help clients — from high-net-worth homeowners and contractors to restaurant owners and property managers — find the right coverage without the guesswork of working with a single-carrier agent.
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Protect your business from third-party claims of bodily injury, property damage, and personal injury. General liability is the foundation of any solid business insurance program.
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Covers your building, equipment, inventory, and other physical assets against fire, theft, vandalism, and other covered losses. Keep your business protected from the unexpected.
Workers’ Compensation Insurance
Workers’ comp covers medical costs and lost wages when an employee is injured on the job. Avery helps businesses meet state compliance requirements and manage costs effectively.
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Data breaches and cyberattacks are a growing risk for businesses of all sizes. Cyber liability covers response costs, legal fees, and customer notification expenses after a security incident.
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Covers your business against employee claims of wrongful termination, discrimination, harassment, and related issues. Essential for any business with employees.
Commercial Auto Insurance
Whether a single truck or a full fleet, commercial auto insurance protects your business against accidents, damage, and liability on the road.
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Let’s Clear Things Up
Got Questions? We’ve Got Answers.
Straight Answers From the Advisors Who Know This State Best
What does it mean that Avery is an independent insurance agency?
An independent agency like Avery is not tied to any single insurance company. We represent multiple top-rated carriers, which means we can shop the market on your behalf and recommend the coverage that truly fits your needs — not the one that benefits any single insurer.
This independence gives you access to more options and unbiased advice. Our advisors are compensated to serve your interests, not to push a specific product. That is a significant advantage over captive agents who can only offer one carrier’s policies.
How much does it cost to work with an Avery advisor?
There is no direct cost to you for working with an Avery advisor. Independent agents are compensated through commissions paid by the insurance carriers when a policy is placed. You receive expert guidance, market comparisons, and ongoing service at no extra charge.
In fact, many clients find that working with Avery saves them money. Our advisors know how to identify the right coverage levels so you are not paying for protection you do not need, and you are not left exposed where you do.
Does Avery help with claims?
Yes — and this is one of the most important things that sets Avery apart. When you have a claim, our in-house claims advisors go to work for you. We guide you through the process, communicate with the insurance company, and advocate for a fair and timely outcome.
Several of our team members hold professional claims designations, including AIC and AINS. We do not just help you file paperwork — we actively represent your interests to make sure you receive the full benefit your policy provides.
Where in New Hampshire does Avery provide coverage?
Avery serves clients throughout the state of New Hampshire from our offices in Wolfeboro and Portsmouth. Whether you live in the Lakes Region, the Seacoast, the White Mountains, or the Merrimack Valley, an Avery advisor is ready to help you find the right coverage.
Our advisors understand the specific risks that come with living and doing business in New Hampshire — from harsh winter weather to seasonal watercraft exposure. We apply that local knowledge to every coverage recommendation we make.
How does Avery handle high-value homes and assets?
Avery offers a dedicated Premier Client Services program for clients with homes valued over .5 million, significant investment portfolios, fine art collections, jewelry, yachts, and other complex assets. This program pairs you with a specialist who understands the unique risks of high-net-worth households.
Through carriers that specialize in high-value personal lines, we provide guaranteed replacement cost coverage, agreed value policies, and comprehensive risk management strategies. Your advisor will conduct a detailed review of your full asset portfolio to make sure nothing is overlooked or underinsured.
How often should I review my insurance coverage?
Avery recommends a full coverage review at least once a year. Major life events — buying a home, starting a business, adding a vehicle, getting married, or making significant home improvements — are all good triggers for an immediate review outside your annual cycle.
Insurance needs change over time, and policies that were right for you a few years ago may leave gaps today. Avery advisors proactively reach out to clients for annual reviews and keep up with changes in the insurance market that could affect your coverage or premium. Our goal is to make sure you are always protected and never paying for coverage that no longer fits.
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