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Castillo Guillermo

License #964052·Sole Owner·Winnetka, Los Angeles County
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Summary

Castillo Guillermo operating as a sole owner is licensed in California under CSLB number 964052. The license was first issued in 2011, putting the business at 15 years on the active CSLB roster. 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.

Business Information
Address
20201 Acre Street
Winnetka, CA 91306
License Details & Classifications
License Number
964052
Issued
Aug 2, 2011
Status
CLEAR
Expires
Aug 31, 2027
Entity
Sole Owner
Financial & Insurance Coverage
Contractor Bond
Surety
Merchants Bonding Company (mutual)
Bond Number
101858145
Effective
Apr 26, 2026
Status
Active
Workers' Compensation
Coverage
Exempt
Carrier
—
Policy Number
—
Effective
Jul 14, 2025
Expires
—
Review

This contractor warrants a closer look before contracting:

  • Workers' comp listed as exempt
License StatusActive
Contractor BondOn file
Workers' CompensationActive

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

Frequently asked questions
Is Castillo Guillermo licensed in California?

Yes. Castillo Guillermo holds California Contractors State License Board license number 964052. 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.

Activity Timeline
  1. License issuedAug 2, 2011
  2. WC coverage startsJul 14, 2025
  3. Bond activeApr 26, 2026
  4. License expiresAug 31, 2027
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