Key points
- Residential service and commercial construction create different kinds of claims.
- Commercial work brings contracts, higher limits, and specific endorsements.
- Underwriters price and accept accounts differently based on the mix — describe yours accurately.
Most plumbing companies fall somewhere on a spectrum: residential service and repair, residential new construction, light commercial service, and larger commercial or industrial construction. Each part of that spectrum looks different to an underwriter.
| Residential service & repair | Residential new construction | Commercial service & construction | |
|---|---|---|---|
| Typical exposure | Many small jobs in occupied homes; water damage to finished interiors | Volume work for builders; completed operations over many homes | Larger projects, occupied buildings, tenant property |
| Contract requirements | Usually few | Builder agreements with indemnity and additional insured terms | Detailed insurance specs, higher limits, endorsements |
| Underwriting focus | Claim frequency, water damage controls | Builder contracts, completed operations, subcontractors | Contract wording, limits, safety programs, experience |
Residential work
Service plumbers work in occupied homes every day. Claims tend to be frequent and moderate: water damage to finished floors and cabinets, damaged property, and slip-and-fall incidents. Customer communication, careful testing, and photos before and after the job all help.
Residential new construction
Builder agreements often push risk to the plumbing subcontractor through indemnity clauses and require additional insured status, sometimes including completed operations. Some insurance companies are cautious about high-volume residential construction because of long-tail completed operations claims, so this work needs to be described accurately.
Commercial work
Commercial customers and general contractors typically require higher limits — commonly $1,000,000 per occurrence and $2,000,000 aggregate, plus umbrella coverage — along with additional insured, waiver of subrogation, and primary and non-contributory endorsements. Some large projects use wrap-up programs (OCIP or CCIP), where the owner or general contractor provides insurance for work on that site. Wrap-ups change how your own policies apply to that project, so your agent should review the enrollment documents.
Moving into commercial work
If you’re adding commercial work to a residential business, review your program before you bid: classifications, limits, umbrella, and endorsement availability. Finding out after you’ve signed the contract that your policy can’t provide a required endorsement is an expensive surprise. See when a general contractor requires higher limits.
Common questions
Does it matter how I describe my residential vs. commercial mix?
Yes. Underwriters use it to classify and price your account, and an inaccurate description can create problems at audit or claim time.
What is a wrap-up and how does it affect me?
A wrap-up is an insurance program purchased by a project owner or general contractor that covers enrolled contractors for work on that project. You may get credit for the covered work, but you still need your own policies for everything else.