Public CSLB records
PrelienLook up a contractor

Hartmann Construction

License #660192·Sole Owner·Sonoma, Sonoma County
Download PDF
Owed money by Hartmann Construction? File a 20-day preliminary notice to keep your lien rights.Send a notice
Summary

Hartmann Construction operating as a sole owner is licensed in California under CSLB number 660192. The license was first issued in 1992, putting the business at 34 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 Atlantic Specialty Insurance Company and an exempt workers' compensation status (no employees on payroll). The business is based in Sonoma, in Sonoma County, California.

Business Information
Address
22040 Bonness Rd
Sonoma, CA 95476
License Details & Classifications
License Number
660192
Issued
Dec 3, 1992
Status
CLEAR
Expires
Dec 31, 2026
Entity
Sole Owner
Financial & Insurance Coverage
Contractor Bond
Surety
Atlantic Specialty Insurance Company
Bond Number
800229467
Effective
Jan 1, 2026
Status
Active
Workers' Compensation
Coverage
Exempt
Carrier
—
Policy Number
—
Effective
Dec 9, 2024
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 Hartmann Construction licensed in California?

Yes. Hartmann Construction holds California Contractors State License Board license number 660192. The license was first issued on December 3, 1992. It is valid through December 31, 2026.

What does Hartmann Construction specialize in?

Hartmann Construction is licensed for one CSLB classification: B General Building Contractor.

Where is Hartmann Construction headquartered?

Hartmann Construction is headquartered at 22040 Bonness Rd, Sonoma, CA 95476, in Sonoma County, California.

Does Hartmann Construction have an active surety bond on file with CSLB?

Yes. Hartmann Construction has an active California contractor surety bond filed with Atlantic Specialty Insurance Company.

Does Hartmann Construction carry workers' compensation coverage?

Hartmann Construction reports an exempt workers' compensation status, meaning the business has no employees on payroll.

How do I verify Hartmann Construction's contractor license?

You can verify Hartmann Construction's license directly with the California Contractors State License Board at https://www.cslb.ca.gov/OnlineServices/CheckLicenseII/LicenseDetail.aspx?LicNum=660192.

Activity Timeline
  1. License issuedDec 3, 1992
  2. WC coverage startsDec 9, 2024
  3. Bond activeJan 1, 2026
  4. License expiresDec 31, 2026
Other contractors in Sonoma County
Browse all Sonoma County contractors →