21 Plumbing
21 Plumbing operating as a sole owner is licensed in California under CSLB number 951684. The license was first issued in 2010, putting the business at 16 years on the active CSLB roster. It carries a single CSLB classification: C-36 — Plumbing Contractor. Records show an active surety bond on file with Atlantic Specialty Insurance Company and an exempt workers' compensation status (no employees on payroll). The business is based in Yucaipa, in San Bernardino County, California.
- License Number
- 951684
- Issued
- Aug 26, 2010
- Status
- CLEAR
- Expires
- Aug 31, 2026
- Entity
- Sole Owner
- Surety
- Atlantic Specialty Insurance Company
- Bond Number
- 810025975
- Effective
- Oct 9, 2025
- Status
- Active
- Coverage
- Exempt
- Carrier
- —
- Policy Number
- —
- Effective
- Jul 11, 2024
- Expires
- —
This contractor warrants a closer look before contracting:
- License expires in 83 days
- Workers' comp listed as exempt
An automated summary of public CSLB data, not a credit score, rating, or endorsement. How we determine this
Is 21 Plumbing licensed in California?
Yes. 21 Plumbing holds California Contractors State License Board license number 951684. The license was first issued on August 26, 2010. It is valid through August 31, 2026.
What does 21 Plumbing specialize in?
21 Plumbing is licensed for one CSLB classification: C-36 Plumbing Contractor.
Where is 21 Plumbing headquartered?
21 Plumbing is headquartered at 11562 Oakwood Court, Yucaipa, CA 92399, in San Bernardino County, California.
Does 21 Plumbing have an active surety bond on file with CSLB?
Yes. 21 Plumbing has an active California contractor surety bond filed with Atlantic Specialty Insurance Company.
Does 21 Plumbing carry workers' compensation coverage?
21 Plumbing reports an exempt workers' compensation status, meaning the business has no employees on payroll.
How do I verify 21 Plumbing's contractor license?
You can verify 21 Plumbing's license directly with the California Contractors State License Board at https://www.cslb.ca.gov/OnlineServices/CheckLicenseII/LicenseDetail.aspx?LicNum=951684.
- License issuedAug 26, 2010
- WC coverage startsJul 11, 2024
- Bond activeOct 9, 2025
- License expiresAug 31, 2026
- Davidson's Air Conditioning & Heating INC#429952San Bernardino·B General Building Contractor
- Duke Plumbing INC#430513Upland·A General Engineering Contractor
- R B Plumbing Company#432191Rimforest·C-36 Plumbing Contractor
- Elder Industries INC#432244Upland·B General Building Contractor
- Action Pumping INC#436154Yucca Valley·C-36 Plumbing Contractor
- Great Western Construction CO#437205Hesperia·B General Building Contractor
- P L Plumbing#438466Upland·C-36 Plumbing Contractor
- Helfer Bill Plumbing#443470Big River·B General Building Contractor