Mast Plumbing Services
Mast Plumbing Services operating as a partnership is licensed in California under CSLB number 1133882. The license was first issued in 2025, putting the business at 1 year on the active CSLB roster. It carries a single CSLB classification: C-36 — Plumbing Contractor. Records show an active surety bond on file with Merchants Bonding Company (mutual) and an exempt workers' compensation status (no employees on payroll). The business is based in San Andreas, in Calaveras County, California.
- License Number
- 1133882
- Issued
- Mar 4, 2025
- Status
- CLEAR
- Expires
- Mar 31, 2027
- Entity
- Partnership
- Surety
- Merchants Bonding Company (mutual)
- Bond Number
- 101788320
- Effective
- Feb 28, 2026
- Status
- Active
- Coverage
- Exempt
- Carrier
- —
- Policy Number
- —
- Effective
- Feb 19, 2025
- Expires
- —
This contractor warrants a closer look before contracting:
- Workers' comp listed as exempt
- License issued less than 2 years ago
An automated summary of public CSLB data, not a credit score, rating, or endorsement. How we determine this
Is Mast Plumbing Services licensed in California?
Yes. Mast Plumbing Services holds California Contractors State License Board license number 1133882. The license was first issued on March 4, 2025. It is valid through March 31, 2027.
What does Mast Plumbing Services specialize in?
Mast Plumbing Services is licensed for one CSLB classification: C-36 Plumbing Contractor.
Where is Mast Plumbing Services headquartered?
Mast Plumbing Services is headquartered at 3670 Mountain Ranch Rd, San Andreas, CA 95249, in Calaveras County, California.
Does Mast Plumbing Services have an active surety bond on file with CSLB?
Yes. Mast Plumbing Services has an active California contractor surety bond filed with Merchants Bonding Company (mutual).
Does Mast Plumbing Services carry workers' compensation coverage?
Mast Plumbing Services reports an exempt workers' compensation status, meaning the business has no employees on payroll.
How do I verify Mast Plumbing Services's contractor license?
You can verify Mast Plumbing Services's license directly with the California Contractors State License Board at https://www.cslb.ca.gov/OnlineServices/CheckLicenseII/LicenseDetail.aspx?LicNum=1133882.
- WC coverage startsFeb 19, 2025
- License issuedMar 4, 2025
- Bond activeFeb 28, 2026
- License expiresMar 31, 2027
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