Public CSLB records

Harry Clark Heating & Air Conditioning INC, C-20 HVAC Contractor in Oakland, CA

License #1056105·Corporation·Oakland, Alameda County
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Summary

Harry Clark Heating & Air Conditioning INC operating as a corporation holds an active California contractor license (CSLB #1056105), valid through Oct 31, 2026. First issued in 2019, the license has been on the CSLB roster for 7 years. It carries a single CSLB classification: C-20 — HVAC Contractor. Records show an active surety bond on file with Atlantic Specialty Insurance Company and active workers' compensation coverage from Ace American Insurance Company. The business is based in Oakland, in Alameda County, California.

Business Information
Address
3040 Broadway
Oakland, CA 94611
License Details & Classifications
License Number
1056105
Issued
Jul 22, 2019
Status
CLEAR
Expires
Oct 31, 2026
Entity
Corporation
Classifications
Financial & Insurance Coverage
Contractor Bond
Surety
Atlantic Specialty Insurance Company
Bond Number
800206354
Effective
Sep 26, 2025
Status
Active
Workers' Compensation
Coverage
Leasing Firm, Temp Agency, etc
Carrier
Ace American Insurance Company
Policy Number
C73865712
Effective
Nov 1, 2025
Expires
Nov 1, 2026
Review

This contractor warrants a closer look before contracting:

  • License expires in 57 days
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 Harry Clark Heating & Air Conditioning INC licensed in California?

Yes. Harry Clark Heating & Air Conditioning INC holds California Contractors State License Board license number 1056105, which is active and in good standing. The license was first issued on July 22, 2019. It is valid through October 31, 2026.

What does Harry Clark Heating & Air Conditioning INC specialize in?

Harry Clark Heating & Air Conditioning INC is licensed for one CSLB classification: C-20 HVAC Contractor.

Where is Harry Clark Heating & Air Conditioning INC headquartered?

Harry Clark Heating & Air Conditioning INC is headquartered at 3040 Broadway, Oakland, CA 94611, in Alameda County, California.

Does Harry Clark Heating & Air Conditioning INC have an active surety bond on file with CSLB?

Yes. Harry Clark Heating & Air Conditioning INC has an active California contractor surety bond filed with Atlantic Specialty Insurance Company.

Does Harry Clark Heating & Air Conditioning INC carry workers' compensation coverage?

Yes. Harry Clark Heating & Air Conditioning INC carries active workers' compensation coverage through Ace American Insurance Company.

How do I verify Harry Clark Heating & Air Conditioning INC's contractor license?

You can verify Harry Clark Heating & Air Conditioning INC's license directly with the California Contractors State License Board at https://www.cslb.ca.gov/OnlineServices/CheckLicenseII/LicenseDetail.aspx?LicNum=1056105.

Activity Timeline
  1. License issuedJul 22, 2019
  2. Bond activeSep 26, 2025
  3. WC coverage startsNov 1, 2025
  4. License expiresOct 31, 2026
  5. WC expiresNov 1, 2026
Other contractors in Alameda County
California lien & payment resources

Working a California job with Harry Clark Heating & Air Conditioning INC, or chasing an unpaid invoice? These free tools track your mechanics lien deadlines and rights under California Civil Code §§8200–8848.

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