Certificate of Insurance for Plumbers

Why Plumbers Get Asked for COIs More Than Most Trades

Plumbing is permitted work in nearly every jurisdiction in the country. That means a certificate of insurance isn't just something a GC or property manager might ask for — it's often tied directly to your ability to pull a permit and pass inspection in the first place. Between municipal permit offices, GCs, and property managers, plumbers end up producing certificates more often than most other trades.

Municipal Permit Requirements

Most building departments require proof of active general liability insurance on file before issuing a plumbing permit, and some require it to be kept current with the licensing board just to maintain your plumbing contractor license year to year — separate from any individual job's permit. If your policy lapses while a permit is open, that can hold up inspections or final sign-off on the job. Because of this, plumbers often need their COI ready before a job is even scheduled, not just when a GC asks for one.

What a Plumber's COI Typically Shows

• Named insured — Your business name exactly as it appears on your policy
• General liability coverage — Per occurrence and aggregate limits, including completed operations
• Policy effective dates — Start and end date of your current policy
• Certificate holder — The municipality, GC, property manager, or client requesting the COI
• Additional insured — If required, the name of the party to be added as additional insured
• Description of operations — For plumbers, this often needs to specifically reference backflow, gas line, or sewer work if that's part of the job, since generic "plumbing services" language doesn't always satisfy a permit office or GC

GC & Property Manager COI Requirements for Plumbing Jobs

Beyond the permit office, general contractors and property managers typically ask for:

• General liability with limits of at least $1M per occurrence / $2M aggregate (some require $2M/$4M for commercial or new construction work)
• The GC or property owner named as additional insured
• A waiver of subrogation in favor of the GC
• Primary and non-contributory language (common on larger commercial projects)
• Workers compensation if you have employees
• Separate proof of backflow prevention certification if you're testing or installing backflow devices — this is often requested as its own document, distinct from the GL certificate

On new construction jobs, some GCs also ask about how long completed operations coverage stays active after the project wraps, given how long a rough-in defect can take to surface. We can speak to this directly on your certificate when it's requested.

How Fast Can You Get a COI

Once you're bound with us, your certificate of insurance is issued instantly — ready to send to a permit office, GC, or property manager the same day. If you need coverage urgently for a permit application or a job starting tomorrow, same-day coverage is typically available.

Renewing Your Permit & Keeping Your COI Current

Many municipal plumbing permits and contractor licenses renew annually and require an updated COI on file at renewal — an ongoing administrative step that's easy to miss if you're not tracking it alongside your policy renewal date. We can help make sure your certificate stays current with your permit office as well as your active job sites, so a lapsed piece of paperwork never holds up an inspection.