Public CSLB records

Martinez Stair Company INC, B General Building Contractor in Concord, CA

License #848380·Corporation·Concord, Contra Costa County
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Summary

Martinez Stair Company INC operating as a corporation holds California contractor license #848380, which is currently expired (lapsed Oct 31, 2026) and not valid to contract until it is renewed. First issued in 2004, the license has been on the CSLB roster for 22 years. It carries a single CSLB classification: B — General Building Contractor. Records show an active surety bond on file with Merchants Bonding Company (mutual) and a previously-filed workers' compensation policy with Markel Insurance Company that is no longer active. The business is based in Concord, in Contra Costa County, California.

Business Information
Address
4723 Mytrle Drive
Concord, CA 94521
License Details & Classifications
License Number
848380
Issued
Oct 18, 2004
Status
CLEAR
Expires
Oct 31, 2026
Entity
Corporation
Financial & Insurance Coverage
Contractor Bond
Surety
Merchants Bonding Company (mutual)
Bond Number
101467957
Effective
May 29, 2025
Status
Active
Workers' Compensation
Coverage
Workers' Compensation Insurance
Carrier
Markel Insurance Company
Policy Number
MWC0009321
Effective
Sep 2, 2024
Expires
Sep 2, 2026
Alert

This contractor has a compliance issue in its public CSLB record:

  • License expired
  • No active workers' comp on file
License StatusInactive / Expired
Contractor BondOn file
Workers' CompensationInactive

An automated summary of public CSLB data, not a credit score, rating, or endorsement. How we determine this

Frequently asked questions
Is Martinez Stair Company INC licensed in California?

Martinez Stair Company INC previously held California Contractors State License Board license number 848380, but the license expired on October 31, 2026 and is not currently valid. It was first issued on October 18, 2004.

What does Martinez Stair Company INC specialize in?

Martinez Stair Company INC is licensed for one CSLB classification: B General Building Contractor.

Where is Martinez Stair Company INC headquartered?

Martinez Stair Company INC is headquartered at 4723 Mytrle Drive, Concord, CA 94521, in Contra Costa County, California.

Does Martinez Stair Company INC have an active surety bond on file with CSLB?

Yes. Martinez Stair Company INC has an active California contractor surety bond filed with Merchants Bonding Company (mutual).

Does Martinez Stair Company INC carry workers' compensation coverage?

Martinez Stair Company INC has a previously-filed workers' compensation policy with Markel Insurance Company that is no longer active.

How do I verify Martinez Stair Company INC's contractor license?

You can verify Martinez Stair Company INC's license directly with the California Contractors State License Board at https://www.cslb.ca.gov/OnlineServices/CheckLicenseII/LicenseDetail.aspx?LicNum=848380.

Activity Timeline
  1. License issuedOct 18, 2004
  2. WC coverage startsSep 2, 2024
  3. Bond activeMay 29, 2025
  4. WC expiredSep 2, 2026
  5. License expiredOct 31, 2026
Other contractors in Contra Costa County
California lien & payment resources

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