By Víctor Mencía · Updated October 2026
This guide is for general information. It is not legal or insurance advice. Requirements vary by state and trade, so confirm yours with your state licensing board and a licensed insurance agent.
One accident on a job site can cost more than a full year of profit. A ladder falls through a client’s skylight. A fitting fails and floods a finished basement. An employee hurts his back lifting a water heater. Without the right insurance, the bill lands on you, and sometimes on your personal assets.
The problem is that contractor insurance is not one policy. It’s a set of policies, each covering a different risk. Some are required by law, some by your clients, and some are optional but smart. This guide explains each one in plain language, so you know what to buy now, what can wait and what to ask before you sign.
Quick answer: most contractors need general liability first, commercial auto as soon as they drive for work, and workers’ compensation once they hire employees (rules vary by state). Tools and equipment coverage, surety bonds, professional liability, builder’s risk and an umbrella policy come next, depending on your trade, your contracts and your state.
Contractor insurance at a glance
| Policy | What it protects | Who usually needs it |
|---|---|---|
| General liability | Damage or injury you cause to others | Almost every contractor |
| Workers’ compensation | Injuries to your employees | Contractors with employees (rules vary by state) |
| Commercial auto | Vehicles used for business | Anyone driving to jobs with tools or crew |
| Tools and equipment (inland marine) | Your tools on site, in transit or stolen | Trades with expensive gear |
| Professional liability | Mistakes in design, advice or specs | Design-build, system design, consultants |
| Builder’s risk | A structure while it’s being built | Renovation and new construction |
| Commercial umbrella | Claims above your other limits | Larger jobs and commercial contracts |
| Surety bonds | Your client, if you fail to perform | Licensed contractors and public jobs |
General liability insurance
General liability (GL) is the foundation of contractor insurance. It covers claims from third parties, meaning clients, neighbors or anyone who isn’t your employee, for:
- Property damage. You crack a client’s countertop while installing a sink.
- Bodily injury. A homeowner trips over your extension cord and breaks a wrist.
- Completed operations. A deck you built fails months after you finished the job.
- Advertising injury. A competitor claims your marketing copied theirs.
Completed operations coverage matters more in the trades than most people think. Many claims arrive long after the job is closed and paid. Check that your policy includes it.
What GL doesn’t cover: injuries to your own employees, damage to your own tools, your vehicles or the cost of redoing poor workmanship. Many GL policies also exclude certain high-risk work, such as some roofing or demolition activities, unless you add it.
Why you’ll be asked for it: many states and cities require proof of general liability to issue or renew a contractor license. Even where it isn’t required by law, most clients, general contractors and property managers won’t let you on site without a certificate of insurance.
Workers’ compensation insurance
Workers’ compensation pays medical bills and part of lost wages when an employee is injured on the job. In exchange, employees generally give up the right to sue you for that injury. In trades where ladders, lifting and power tools are daily work, this coverage is essential.
Is it required? In most states, yes, once you have employees. Some states require it from the first employee, others set a minimum number, and rules for construction are often stricter than for other industries. Texas is the main exception: most private employers can choose not to carry it, but they lose important legal protections if they don’t.
What about sole proprietors? If you work alone, many states don’t require you to cover yourself. But general contractors often require subcontractors to carry workers’ comp anyway, or they charge you for coverage under their own policy.
Watch out for misclassification. Calling your crew «1099 contractors» doesn’t automatically remove the need for workers’ comp. If you control how, when and where they work, your state may treat them as employees. If one gets hurt, you could be responsible for the claim and face penalties.
Commercial auto insurance
If you drive to jobs with tools, materials or employees, your personal auto policy may not protect you. Personal policies often exclude or limit business use, so a crash on the way to a job can lead to a denied claim.
Commercial auto covers:
- Liability for injuries and damage you cause while driving for work.
- Physical damage to your work vehicle (collision and comprehensive).
- Employees driving company vehicles.
Hired and non-owned auto (HNOA) is a related add-on. It covers you when employees use their own cars for work errands, or when you rent a vehicle. If your crew drives to the supply house in their own trucks, ask about it.
Commercial auto usually covers the vehicle, not the tools inside it. That’s a separate policy.
Tools and equipment insurance (inland marine)
Your tools are your income. A stolen trailer or a van break-in can stop work for days. Tools and equipment coverage, usually called inland marine or an installation floater, protects property that moves between locations:
- Hand and power tools.
- Ladders, scaffolding and generators.
- Equipment you own or rent.
- Materials in transit or stored on site before installation.
Standard business property insurance usually covers items at a fixed location, like your shop. It often doesn’t cover tools on a job site or in your truck. That gap is why trades buy inland marine.
Before you buy, check:
- Whether it pays replacement cost or actual cash value. Actual cash value deducts depreciation, so an old saw pays very little.
- The deductible per claim.
- Theft conditions. Some policies only pay if the vehicle was locked or shows signs of forced entry.
Business owner’s policy (BOP)
A business owner’s policy bundles general liability and commercial property, often at a lower price than buying them separately. It may also include business interruption coverage, which replaces lost income if a covered event, like a fire at your shop, stops you from working.
BOPs suit small contractors with a shop, office or storage space. Not every insurer offers them for higher-risk trades, and the property part may still exclude tools on job sites.
Professional liability insurance
Professional liability, also called errors and omissions (E&O), covers financial losses caused by your advice, design or specifications, even when nothing is physically damaged. For example:
- You design an HVAC system that’s undersized, and the client has to replace it.
- Your estimate misses a code requirement, and the project runs over budget.
- A design-build layout mistake delays a client’s opening.
General liability normally excludes these professional mistakes. If you only install what others design, you may not need E&O. If you design, consult, inspect or give technical recommendations, you probably do.
Builder’s risk insurance
Builder’s risk covers a building while it’s under construction or renovation. It protects the structure and materials against risks like fire, wind, theft and vandalism.
Who buys it depends on the contract. On many projects the property owner or general contractor carries it. On others, the contract makes it your responsibility. Read the insurance section of every contract before you start. Assuming someone else bought it is a common and expensive mistake.
Commercial umbrella insurance
An umbrella policy adds extra limits on top of your general liability, commercial auto and employer’s liability. If a serious claim exceeds those limits, the umbrella pays the difference, up to its own limit.
It becomes relevant when commercial clients require higher limits than your GL provides, when you work on high-value properties or when you run several vehicles. It’s often a cheaper way to reach high limits than raising each policy separately.
Surety bonds: not insurance, but often required
Bonds look like insurance but work differently. Insurance protects you. A bond protects your client or the public if you don’t meet your obligations. If the bond company pays a claim, it will usually seek repayment from you.
Common bonds for contractors:
- License bonds. Required by many states and cities to get a contractor license.
- Bid bonds. Guarantee you’ll accept a job if you win the bid.
- Performance bonds. Guarantee you’ll complete the project as agreed.
- Payment bonds. Guarantee you’ll pay subcontractors and suppliers.
Performance and payment bonds are standard on public projects. Your credit, finances and track record affect whether you qualify and what you pay.
Which policies to buy first
You don’t need every policy on day one. A practical order for most small trade businesses:
- General liability. Clients and licensing usually require it.
- Commercial auto. As soon as you drive for work.
- Workers’ comp. When you hire, or when your state or clients require it.
- Tools and equipment. When replacing your gear would hurt your cash flow.
- Bonds. When your license or contracts require them.
- Professional liability, builder’s risk and umbrella. When your work or contracts call for them.
Questions to ask before you buy
- Is it occurrence or claims-made? Occurrence policies cover incidents that happen during the policy period, even if the claim comes later. Claims-made policies only cover claims filed while the policy is active. For contractor GL, occurrence is generally preferred.
- What are the limits? Compare per-occurrence and aggregate limits with what your clients and contracts require.
- What’s excluded? Look for exclusions tied to your trade, such as roofing heights, mold or condo work.
- Does it cover subcontractors? Many insurers charge you more if your subs are uninsured, so collect proof of their coverage.
- Can you add clients as additional insureds? General contractors and property managers often require this endorsement.
Certificates of insurance (COI)
A certificate of insurance is a one-page document that proves your coverage. Clients and general contractors will ask for it before you start, and your insurer or agent can usually issue it quickly. Keep yours ready to send, and request one from every subcontractor you hire, checking the expiration date.
What affects what you pay
Insurers price contractor coverage on several factors:
- Your trade. Roofing and structural work usually cost more to insure than painting or finish carpentry.
- Payroll and revenue. Workers’ comp is generally based on payroll; GL is often based on revenue or payroll.
- Claims history. Past claims raise premiums.
- Location. State rules, local costs and weather risks matter.
- Experience and years in business.
- Limits and deductibles you choose.
The most reliable way to compare is to get several quotes for the same limits and coverage, from an independent agent or broker that works with contractors.
Frequently asked questions
What insurance does a contractor need?
Most contractors need general liability and commercial auto. Workers’ compensation is usually required once you have employees, depending on your state. Tools coverage, bonds and other policies depend on your trade and contracts.
Is general liability insurance required for contractors?
It depends on your state and city. Many require it for licensing, and most clients and general contractors require it before you can work on their projects.
Do I need workers’ comp if I work alone?
Many states don’t require sole proprietors to cover themselves, but general contractors may still require it from subcontractors. Check your state’s workers’ compensation agency.
Does general liability cover my tools?
No. Tools and equipment on job sites or in your vehicle need inland marine coverage or a similar policy.
Is a contractor bond the same as insurance?
No. A bond protects your client or the public. If the bond company pays a claim, it will usually ask you to repay it.
Sources: U.S. Small Business Administration (business insurance guidance); Texas Department of Insurance, Division of Workers’ Compensation (non-subscriber employers).