Prostone World INC, C-54 Ceramic and Mosaic Tile Contractor in Clayton, CA
Prostone World INC operating as a corporation holds California contractor license #1040939, which is currently expired (lapsed Jun 30, 2026) and not valid to contract until it is renewed. First issued in 2018, the license has been on the CSLB roster for 8 years. It carries a single CSLB classification: C-54 — Ceramic and Mosaic Tile Contractor. Records show an active surety bond on file with Philadelphia Indemnity Insurance Company and active workers' compensation coverage from State Compensation Insurance Fund. The business is based in Clayton, in Contra Costa County, California.
- License Number
- 1040939
- Issued
- Jun 20, 2018
- Status
- CLEAR
- Expires
- Jun 30, 2026
- Entity
- Corporation
- Surety
- Philadelphia Indemnity Insurance Company
- Bond Number
- PB10163402404
- Effective
- Jun 18, 2025
- Status
- Active
- Coverage
- Workers' Compensation Insurance
- Carrier
- State Compensation Insurance Fund
- Policy Number
- 9125383
- Effective
- Feb 14, 2018
- Expires
- Feb 14, 2027
This contractor has a compliance issue in its public CSLB record:
- License expired
An automated summary of public CSLB data, not a credit score, rating, or endorsement. How we determine this
Is Prostone World INC licensed in California?
Prostone World INC previously held California Contractors State License Board license number 1040939, but the license expired on June 30, 2026 and is not currently valid. It was first issued on June 20, 2018.
What does Prostone World INC specialize in?
Prostone World INC is licensed for one CSLB classification: C-54 Ceramic and Mosaic Tile Contractor.
Where is Prostone World INC headquartered?
Prostone World INC is headquartered at 13980 Marsh Creek Rd, Clayton, CA 94517, in Contra Costa County, California.
Does Prostone World INC have an active surety bond on file with CSLB?
Yes. Prostone World INC has an active California contractor surety bond filed with Philadelphia Indemnity Insurance Company.
Does Prostone World INC carry workers' compensation coverage?
Yes. Prostone World INC carries active workers' compensation coverage through State Compensation Insurance Fund.
How do I verify Prostone World INC's contractor license?
You can verify Prostone World INC's license directly with the California Contractors State License Board at https://www.cslb.ca.gov/OnlineServices/CheckLicenseII/LicenseDetail.aspx?LicNum=1040939.
- WC coverage startsFeb 14, 2018
- License issuedJun 20, 2018
- Bond activeJun 18, 2025
- License expiredJun 30, 2026
- WC expiresFeb 14, 2027
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