Castillo Guillermo, B General Building Contractor in Winnetka, CA
Castillo Guillermo operating as a sole owner holds an active California contractor license (CSLB #964052), valid through Aug 31, 2027. First issued in 2011, the license has been on the CSLB roster for 15 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 an exempt workers' compensation status (no employees on payroll). The business is based in Winnetka, in Los Angeles County, California.
- License Number
- 964052
- Issued
- Aug 2, 2011
- Status
- CLEAR
- Expires
- Aug 31, 2027
- Entity
- Sole Owner
- Surety
- Merchants Bonding Company (mutual)
- Bond Number
- 101858145
- Effective
- Apr 26, 2026
- Status
- Active
- Coverage
- Exempt
- Carrier
- —
- Policy Number
- —
- Effective
- Jul 14, 2025
- Expires
- —
This contractor warrants a closer look before contracting:
- Workers' comp listed as exempt
An automated summary of public CSLB data, not a credit score, rating, or endorsement. How we determine this
Is Castillo Guillermo licensed in California?
Yes. Castillo Guillermo holds California Contractors State License Board license number 964052, which is active and in good standing. The license was first issued on August 2, 2011. It is valid through August 31, 2027.
What does Castillo Guillermo specialize in?
Castillo Guillermo is licensed for one CSLB classification: B General Building Contractor.
Where is Castillo Guillermo headquartered?
Castillo Guillermo is headquartered at 20201 Acre Street, Winnetka, CA 91306, in Los Angeles County, California.
Does Castillo Guillermo have an active surety bond on file with CSLB?
Yes. Castillo Guillermo has an active California contractor surety bond filed with Merchants Bonding Company (mutual).
Does Castillo Guillermo carry workers' compensation coverage?
Castillo Guillermo reports an exempt workers' compensation status, meaning the business has no employees on payroll.
How do I verify Castillo Guillermo's contractor license?
You can verify Castillo Guillermo's license directly with the California Contractors State License Board at https://www.cslb.ca.gov/OnlineServices/CheckLicenseII/LicenseDetail.aspx?LicNum=964052.
- License issuedAug 2, 2011
- WC coverage startsJul 14, 2025
- Bond activeApr 26, 2026
- License expiresAug 31, 2027
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