Tos Builders LLC, B General Building Contractor in Belvedere Tiburon, CA
Tos Builders LLC operating as a limited liability holds an active California contractor license (CSLB #1141409), valid through Aug 31, 2027. First issued in 2025, the license has been on the CSLB roster for 1 year. It carries a single CSLB classification: B — General Building Contractor. Records show an active surety bond on file with Western Surety Company and a previously-filed workers' compensation policy with State Compensation Insurance Fund that is no longer active. The business is based in Belvedere Tiburon, in Marin County, California.
- License Number
- 1141409
- Issued
- Aug 1, 2025
- Status
- CLEAR
- Expires
- Aug 31, 2027
- Entity
- Limited Liability
- Surety
- Western Surety Company
- Bond Number
- 67530683
- Effective
- Jun 20, 2025
- Status
- Active
- Coverage
- Workers' Compensation Insurance
- Carrier
- State Compensation Insurance Fund
- Policy Number
- 9382706
- Effective
- Jun 20, 2025
- Expires
- Jun 20, 2026
This contractor has a compliance issue in its public CSLB record:
- 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 Tos Builders LLC licensed in California?
Yes. Tos Builders LLC holds California Contractors State License Board license number 1141409, which is active and in good standing. The license was first issued on August 1, 2025. It is valid through August 31, 2027.
What does Tos Builders LLC specialize in?
Tos Builders LLC is licensed for one CSLB classification: B General Building Contractor.
Where is Tos Builders LLC headquartered?
Tos Builders LLC is headquartered at 1110 Mar West St Ste M, Belvedere Tiburon, CA 94920, in Marin County, California.
Does Tos Builders LLC have an active surety bond on file with CSLB?
Yes. Tos Builders LLC has an active California contractor surety bond filed with Western Surety Company.
Does Tos Builders LLC carry workers' compensation coverage?
Tos Builders LLC has a previously-filed workers' compensation policy with State Compensation Insurance Fund that is no longer active.
How do I verify Tos Builders LLC's contractor license?
You can verify Tos Builders LLC's license directly with the California Contractors State License Board at https://www.cslb.ca.gov/OnlineServices/CheckLicenseII/LicenseDetail.aspx?LicNum=1141409.
- Bond activeJun 20, 2025
- WC coverage startsJun 20, 2025
- License issuedAug 1, 2025
- WC expiredJun 20, 2026
- License expiresAug 31, 2027
- Valentine Corporation#229225San Rafael·A General Engineering Contractor
- Maggiora and Ghilotti INC#226767San Rafael·A General Engineering Contractor
- Marin County Roofing CO INC#256043San Rafael·B General Building Contractor
- Weiss Company INC the#354958Tiburon·B General Building Contractor
- Josephs James W CO#359012San Anselmo·B General Building Contractor
- Consolidated Construction INC#358693San Rafael·B General Building Contractor
- Le Vine Mark General Contractor#356399San Rafael·B General Building Contractor
- Kelly Pacific Construction CO#346196San Rafael·B General Building Contractor
Working a California job with Tos Builders LLC, 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 Tos Builders LLC? Claim or correct this profile