On Site
Sun City · Riverside County · CA
VERIFIED
Bestopedia verdict
96
/ 100
Bestopedia Trust Score
California’s contractor board lists On Site in CLEAR standing. A contractor bond is on file, and workers’ compensation coverage is current.
- License standing
- 30 / 30
- Years licensed
- 20 / 20
- Contractor bond
- 20 / 20
- Workers' comp
- 16 / 20
- Business structure
- 10 / 10
The verified record
- CSLB license
- #569390 verify on CSLB ↗
- Classifications
- B, C-10, C-36
- Years licensed
- 37.1 years since 05/30/1989
- Contractor bond
- $25,000 WESTERN SURETY COMPANY
- Workers’ comp
- Current
- Business type
- Sole Owner
- Qualifying principal
- Bill Marc O'brien
- Address of record
- 28625 Portsmouth Dr, Sun City, CA 92586
Frequently Asked Questions
Is On Site a licensed Plumbing contractor in California?
Yes. On Site holds California CSLB contractor license #569390 with a C-36 (Plumbing) classification. Current CSLB status: CLEAR.
What work is On Site licensed to perform?
License #569390 carries C-36 (Plumbing), plus additional classifications: B, C10.
Is On Site bonded?
Yes. On Site carries contractor's bond #66284716 for $25,000 through WESTERN SURETY COMPANY.
Does On Site carry workers' compensation insurance?
Workers' compensation status on file: Exempt.
How long has On Site held its contractor license?
License #569390 was originally issued on 05/30/1989, approximately 37 years ago (as of July 2026).
Where is On Site located?
On Site is based in Sun City, Riverside County, CA 92586.