Winston's Plumbing, C-36 Plumbing Contractor in Oakland, CA
Winston's Plumbing operating as a sole owner holds California contractor license #537739, which is currently expired (lapsed Aug 31, 2026) and not valid to contract until it is renewed. First issued in 1988, the license has been on the CSLB roster for 38 years. It carries a single CSLB classification: C-36 — Plumbing Contractor. Records show an active surety bond on file with North River Insurance Company (the) and a previously-filed workers' compensation policy with State Compensation Insurance Fund that is no longer active. The business is based in Oakland, in Alameda County, California.
- License Number
- 537739
- Issued
- Aug 9, 1988
- Status
- CLEAR
- Expires
- Aug 31, 2026
- Entity
- Sole Owner
- Surety
- North River Insurance Company (the)
- Bond Number
- 04CF646169
- Effective
- Aug 28, 2025
- Status
- Active
- Coverage
- Workers' Compensation Insurance
- Carrier
- State Compensation Insurance Fund
- Policy Number
- 9280542
- Effective
- Jul 22, 2020
- Expires
- Jul 22, 2026
This contractor has a compliance issue in its public CSLB record:
- License expired
- No active workers' comp on file
An automated summary of public CSLB data, not a credit score, rating, or endorsement. How we determine this
Is Winston's Plumbing licensed in California?
Winston's Plumbing previously held California Contractors State License Board license number 537739, but the license expired on August 31, 2026 and is not currently valid. It was first issued on August 9, 1988.
What does Winston's Plumbing specialize in?
Winston's Plumbing is licensed for one CSLB classification: C-36 Plumbing Contractor.
Where is Winston's Plumbing headquartered?
Winston's Plumbing is headquartered at 411 43rd Street, Oakland, CA 94609, in Alameda County, California.
Does Winston's Plumbing have an active surety bond on file with CSLB?
Yes. Winston's Plumbing has an active California contractor surety bond filed with North River Insurance Company (the).
Does Winston's Plumbing carry workers' compensation coverage?
Winston's Plumbing has a previously-filed workers' compensation policy with State Compensation Insurance Fund that is no longer active.
How do I verify Winston's Plumbing's contractor license?
You can verify Winston's Plumbing's license directly with the California Contractors State License Board at https://www.cslb.ca.gov/OnlineServices/CheckLicenseII/LicenseDetail.aspx?LicNum=537739.
- License issuedAug 9, 1988
- WC coverage startsJul 22, 2020
- Bond activeAug 28, 2025
- WC expiredJul 22, 2026
- License expiredAug 31, 2026
- Mannon Construction Incorporated#531142Oakland·B General Building Contractor
- Remodelers the#527097Hayward·B General Building Contractor
- Mc Bride M Plumbing#554228Alameda·C-36 Plumbing Contractor
- Hawkins Plumbing#556632Livermore·C-36 Plumbing Contractor
- Huth W J Plumbing#550089Oakland·B General Building Contractor
- Braswell Construction INC#551066Livermore·B General Building Contractor
- G D Plumbing & Construction#545783Oakland·B General Building Contractor
- Diablo Plumbing INC#570711Pleasanton·C-36 Plumbing Contractor
Working a California job with Winston's Plumbing, or chasing an unpaid invoice? These free tools track your mechanics lien deadlines and rights under California Civil Code §§8200–8848.
- California preliminary notice deadline calculatorFind your 20-day deadline and the lien rights at risk.
- Do I need a preliminary notice in California?Answer a few questions to see if the 20-day notice applies.
- Did I lose my California lien rights?Check whether your mechanics lien window has passed.
- Unpaid construction invoice in CaliforniaYour options and deadlines for collecting on a California job.
Own Winston's Plumbing? Claim or correct this profile