Why Your General Contractor Is Asking for Your Certificate of Insurance
Sep 28, 2026
The email every contractor gets
You just won the job. Then the email lands: “Please send your certificate of insurance and add us as additional insured.”
Those two terms trip up plenty of good contractors. Many don’t learn what they mean until a job is sitting on hold, waiting for paperwork
Here’s what a certificate is, why your general contractor (GC) wants one, and what “additional insured” actually does. It takes about five minutes to read.
What a certificate of insurance is
A certificate of insurance (COI) is a one-page summary of your policies. It shows who insures you, which coverages you carry, your limits, and your policy dates.
Your agent issues it, usually within a day, and it costs you nothing. Think of it as proof of coverage you can hand to someone, like a driver’s license for your business.
Here’s the part that surprises people: a certificate doesn’t change your policy. It only reports what’s already there. If your policy doesn’t include something, the certificate can’t add it.
Why your GC asks for it
Your GC isn’t doubting you. They’re protecting themselves, and there are three reasons behind the request.
-
The lawyers require it. The subcontract you signed was drawn up by lawyers to protect their clients (the GC). It almost always lists the coverage and limits you must carry. The certificate is how they check that box.
-
Your claims can land on them. If your crew damages a neighbor’s property or someone gets hurt on your part of the job, the injured person often sues everyone on the site. The GC wants your insurance standing in front of theirs.
-
Their own carrier is watching. GCs are audited on the subs they hire. An uninsured or underinsured sub can cost them dearly at audit, or worse, cost them a project.
That’s why the request often comes before you can start work, and why the GC may not pay your first invoice without it on file.
What “additional insured” means
Additional insured means your GC is added to your general liability policy. It’s done with an endorsement, which is a page attached to your policy that extends your coverage to them.
In practice, if someone sues the GC over your portion of the project, your policy can step in to defend them. That’s the protection they’re asking for.
It isn’t blanket coverage. It applies to claims tied to your portions of the project, and the exact wording of the endorsement decides how far it goes. Some versions cover only your specific job, or a specific time period, while others can be significantly broader or ongoing.
This is where certificates get confusing. Being listed on the certificate and being an additional insured are two different things:
Certificate holder
-
Listed only on the certificate
-
Provides no rights under the policy
-
Simply proves who requested the certificate
Additional insured
-
Must be shown on an endorsement attached to your policy
-
Provides coverage based on the endorsement
-
Proves that the GC is actually covered
Check these before you send it
Most delays come from small mismatches between the contract and your policy. Read the insurance section of your subcontract and look for these:
-
Limits: If the contract asks for $1,000,000 per occurrence and $2,000,000 aggregate, your policy has to meet or beat both numbers.
-
Dates: A certificate showing a policy that expires mid-job will get kicked back. Ask us for the renewal certificate when the time comes.
-
Names: The GC’s legal name and the project address need to match the contract. “Smith Construction” and “Smith Construction LLC” aren’t always the same thing to their compliance team.
-
Extra wording: Many contracts also ask for affiliated parties, job locations, or further additional insureds to be listed. If this wording is incorrect, it can delay the process.
-
Endorsements: “primary and non-contributory” coverage, which means your policy pays first, and theirs doesn’t share the bill. A “waiver of subrogation”, which means your carrier agrees not to go after the GC for what it paid on a claim. Or various other additional endorsements may be required.
-
Workers’ comp. If you have employees, the GC will want proof of that coverage, too. If you work alone, tell them, and ask for an exception.
How to get a certificate from us
If you are one of our current clients, simply log in to your client portal and click on ” Request a certificate.
Or, send your account manager three things: the insurance section of the contract, the GC’s legal name and address, and the project address.
We’ll check the request against your policy before we issue anything, so you find out about any gaps now rather than on the jobsite.
If you’ve got a job that starts Monday and a GC asking for a certificate, call us. That’s a normal day at Great Northwest Insurance Brokers. We work with contractors across Oregon, Washington, and Idaho. If your policy falls short of the contract, we’ll tell you now and help you fix it before you start.
Give us a call at 503-852-3072 or visit gnwib.com.
Marty McLaughlin, Great Northwest Insurance Brokers