All About T-Bar, C-2 Insulation and Acoustical Contractor in Diamond Bar, CA
All About T-Bar operating as a sole owner holds an active California contractor license (CSLB #570421), valid through Jun 30, 2027. First issued in 1989, the license has been on the CSLB roster for 37 years. It carries a single CSLB classification: C-2 — Insulation and Acoustical Contractor. Records show an active surety bond on file with Atlantic Specialty Insurance Company and active workers' compensation coverage from State Compensation Insurance Fund. The business is based in Diamond Bar, in Los Angeles County, California.
- License Number
- 570421
- Issued
- Jun 9, 1989
- Status
- CLEAR
- Expires
- Jun 30, 2027
- Entity
- Sole Owner
- Surety
- Atlantic Specialty Insurance Company
- Bond Number
- 800209613
- Effective
- Nov 17, 2025
- Status
- Active
- Coverage
- Workers' Compensation Insurance
- Carrier
- State Compensation Insurance Fund
- Policy Number
- 1138812
- Effective
- Oct 1, 2025
- Expires
- Oct 1, 2026
This contractor is verified, with no adverse conditions in the current CSLB record.
An automated summary of public CSLB data, not a credit score, rating, or endorsement. How we determine this
Is All About T-Bar licensed in California?
Yes. All About T-Bar holds California Contractors State License Board license number 570421, which is active and in good standing. The license was first issued on June 9, 1989. It is valid through June 30, 2027.
What does All About T-Bar specialize in?
All About T-Bar is licensed for one CSLB classification: C-2 Insulation and Acoustical Contractor.
Where is All About T-Bar headquartered?
All About T-Bar is headquartered at 23285 Woodleaf Drive, Diamond Bar, CA 91765, in Los Angeles County, California.
Does All About T-Bar have an active surety bond on file with CSLB?
Yes. All About T-Bar has an active California contractor surety bond filed with Atlantic Specialty Insurance Company.
Does All About T-Bar carry workers' compensation coverage?
Yes. All About T-Bar carries active workers' compensation coverage through State Compensation Insurance Fund.
How do I verify All About T-Bar's contractor license?
You can verify All About T-Bar's license directly with the California Contractors State License Board at https://www.cslb.ca.gov/OnlineServices/CheckLicenseII/LicenseDetail.aspx?LicNum=570421.
- License issuedJun 9, 1989
- WC coverage startsOct 1, 2025
- Bond activeNov 17, 2025
- WC expiresOct 1, 2026
- License expiresJun 30, 2027
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