General liability insurance for contractors costs whatever your trade, your payroll or revenue, and your claims history say it costs. Nobody honest can give you a number without those, and anyone who does is selling you something. What I can tell you is how the price actually gets built, what a certificate of insurance (COI) really proves, and why property managers won't let you on site without one.
Short version: get the policy, get the COI right the first time, and stop treating it as paperwork. It's the thing that gets you through the door.
What does general liability insurance actually cover?
General liability, or GL, covers you when your work hurts someone or damages property that isn't yours. A tenant trips over your extension cord. Your helper cracks a countertop carrying a ladder through the kitchen. A supply line you worked on lets go two days later and floods the unit below.
It does not cover your own tools, your truck, or your employees getting hurt. Those are separate policies: tools or inland marine coverage, commercial auto, and workers' comp. It also generally won't pay just to redo work you got wrong.
People mix these up all the time. Then they find out at the worst possible moment, usually on the phone with an angry owner.
What drives the cost of general liability for contractors?
I'm not going to put a dollar figure here. Prices move by state, by carrier and by year, and a number from a blog post is worth nothing on your renewal. Here's what the underwriter is actually looking at.
Your trade
A painter and a roofer are not the same risk, and they're not priced the same. Carriers rate you by class code based on the work you do. Describe your work honestly. If you tell them you're a handyman and then take on structural work, you've got a policy that may not respond when you need it.
Your payroll, revenue and subcontracted costs
Many GL policies are rated on payroll, gross receipts or both. You give an estimate at the start of the policy year, and the carrier audits the real figures at the end. Guess low and you pay the difference.
Here's the part people hate hearing. If you hire subs who don't carry their own insurance, many carriers will treat what you paid them like your own payroll at audit. Your premium goes up because of someone else's missing paperwork. Collect your subs' COIs before they start, every time.
Your claims history
Clean history, better price. A couple of claims and some carriers won't quote you at all. This is why sloppy site protection costs you twice: once on the job, again at renewal.
Limits and deductible
A lot of property management contracts ask for $1 million per occurrence and $2 million aggregate. That's common, not universal, so read the actual contract before you buy. Bigger commercial clients may want higher limits, which usually means adding an umbrella policy on top.
Where you work
State and local rules differ. Some states and cities tie licensing or permits to proof of insurance. Check with your state licensing board and your agent, not a forum thread.
How to get a quote that means something
Walk into the conversation with an agent prepared. Have this ready:
- A clear description of the work you actually do, including the risky jobs you take now and then.
- Your estimated payroll, revenue and subcontracted costs for the next 12 months.
- Your claims history, if you have one.
- Two or three real contracts or client requirements, so the agent quotes the limits and endorsements you'll be asked for.
- A list of your regular subs and whether they carry their own GL and workers' comp.
An independent agent who works with contractors can shop multiple carriers. That's usually worth more than an online quote form that doesn't know what an additional insured endorsement is.
What is a COI, and what does it prove?
A certificate of insurance is a one-page summary of your coverage. In the US, liability certificates are usually issued on the ACORD 25 form. It shows your carrier, policy numbers, dates and limits.
What it doesn't do is change your coverage. The certificate is a snapshot. The policy and its endorsements are what actually pay.
That's why the two terms people confuse matter so much:
- The certificate holder is just who the certificate was issued to. Being listed there gives them proof, nothing more.
- An additional insured is someone your policy actually extends coverage to, usually through an endorsement your carrier adds. Property managers and owners often require this.
If the contract says the owner and management company must be additional insureds, a certificate with their name in the holder box doesn't satisfy it. You need the endorsement, and many PMs will ask for a copy attached to the COI. Some contracts also ask for a waiver of subrogation or primary and non-contributory wording. Those are endorsements too. Ask your agent, don't guess.
Why property managers demand COIs
It's not personal. A property manager is looking after someone else's building, and they answer to the owner when something goes wrong.
They ask for your COI because:
- If you damage the property or injure a tenant without insurance, the claim lands on the owner's policy. Their premiums go up for your mistake.
- Their management agreement with the owner often requires every vendor to carry insurance at set limits.
- Their own insurer may require them to collect vendor certificates.
- An expired or missing COI in their files is their problem in an audit or a lawsuit, not just yours.
When I ran my maintenance company in London, we worked for housing associations and letting agents through a network of subcontractors. Different country, different rules, same logic. I had one rule: no insurance on file, no keys. I didn't care how good the sub was or how urgent the job.
Your client is running the same rule on you. The contractor who sends a clean, correct COI the same day looks like a business. The one who sends the wrong document three times looks like a risk. It's not the price that wins the account. It's the service, and this is the first piece of service they see.
Your COI checklist before you hit send
Most rejected certificates fail on boring details. Check these every time:
- The named insured matches the legal entity on your contract, exactly.
- The policy dates are current and won't expire in the middle of the job.
- The limits meet or beat what the contract asks for.
- The certificate holder is the exact legal name and address the PM gave you.
- Additional insured, waiver of subrogation and primary and non-contributory endorsements are in place if the contract requires them.
- Workers' comp is shown, or you have whatever your state accepts if you're exempt.
Then put your renewal date in the calendar a month early. Every PM you work for will chase you for the new certificate. Beat them to it.
Stop emailing the same PDF to every new client
Here's the ugly side nobody talks about. You win ten property management clients and now you're running ten inboxes of certificate requests. Renewal comes round and you're re-sending the same file ten times, each with a different holder name. That's admin time you're not spending on site or on the quote that pays.
Plan@Job is AI-powered project and operations management for construction and property businesses. It runs your jobs, your subs and your in-house team in one place. In Plan@Job, you as the contractor are the operator: the business managing clients, delivery and subcontractors. You can split a job into internal stages with scope, dates and costs, while the client only sees the agreed scope and price. Your stage costs and which subs you used stay internal. There's more on how that works on the project management page.
The paperwork belongs in the same place as the work. Upload your COI once to Plan@Job and stop emailing it to every new client.
To be straight with you: the full launch is in the UK right now. US contractors can reserve a spot on the US contractors page. If you want the background colleagues that handle follow-ups and the morning brief, take a look at AI staff too.
And if you're thinking bigger, about winning the contract and keeping the margin while subs do the work, I write about that at Construction Arbitrage. Insurance is the boring foundation under that model. Get it wrong and nothing else holds.
FAQ
How much is general liability insurance for a small contractor?
It depends on your trade, your state, your payroll or revenue and your claims history, so any number without those is a guess. Get quotes from an independent agent who works with contractors, and bring real client contracts so you're quoted the limits you'll actually need. Remember the end-of-year audit can change what you pay.
Is a COI the same as being an additional insured?
No. A COI is a summary of your coverage. Additional insured status comes from an endorsement on your policy. If a PM's contract requires additional insured status, putting their name in the certificate holder box isn't enough.
Do my subcontractors need their own general liability?
You should require it. Uninsured subs can push your own premium up at audit, and if they cause damage, the claim may land on your policy. Collect their COIs before they start and check the dates, same as your clients check yours.