The details on United Plumbing
- WA L&I registration
- UNITEP*791RN
- Registration checked
- September 14, 2026
- Registered since
- 2022
- Expires
- January 2028
- Contractor bond
- $6,000 · American Contractors Indem CO
- Liability insurance
- $1,000,000 · American Casualty Insurance Co
- Insurance through
- November 2026
- Primary trade
- Plumbing
- L&I specialty
- JOURNEY LEVEL
- Registered principal
- SHERMAN, CLIFFORD REID · since 2021
- Registered principal
- SHERMAN, KRISTINA LYNNETTE · since 2021
- Service area
- Spokane area
- Phone
- (509) 922-5000
- Website
- unitedplumbingcorp.com
Something here wrong or out of date? The business can claim this listing and correct it.
Questions worth asking United Plumbing
Does United Plumbing hold a Washington contractor registration?
Yes — United Plumbing holds Washington State (L&I) contractor registration UNITEP*791RN, expiring January 2028. We checked it against the state record on September 14, 2026; the same lookup takes you about a minute if you want to see it yourself. The same record shows a $6,000 contractor bond (American Contractors Indem CO) and $1,000,000 of liability insurance with American Casualty Insurance Co through November 2026. Get current certificates for the bond and the insurance before anyone starts.
What does United Plumbing do?
general plumbing, water heater installation, dishwasher installation, fixture and water line repair, repiping — that is the plumbing work they list. Ask where the subcontractors come in.
Does United Plumbing cover my part of Spokane?
Spokane area. Service areas change, so confirm they cover your address when you call.
Why is United Plumbing listed here?
Licensed, and working in Spokane. That is the bar for a page on this site, and United Plumbing clears it. The registration gets checked against the state's record and the date sits on this page, so you can judge how current it is. United Plumbing rates 3.8 out of 5 on Google across 17 reviews, and this page links straight to those reviews so you can read them for yourself.