Public CSLB records
PrelienLook up a contractor

O'sullivan D F Construction

License #506132·Sole Owner·Novato, Marin County
Download PDF
Owed money by O'sullivan D F Construction? File a 20-day preliminary notice to keep your lien rights.Send a notice
Summary

O'sullivan D F Construction operating as a sole owner is licensed in California under CSLB number 506132. The license was first issued in 1987, putting the business at 39 years on the active CSLB roster. It carries a single CSLB classification: B — General Building Contractor. Records show a previously-filed surety bond from Merchants Bonding Company (mutual) that is no longer active and an exempt workers' compensation status (no employees on payroll). The business is based in Novato, in Marin County, California.

Business Information
Address
P O Box 1092
Novato, CA 949481092
License Details & Classifications
License Number
506132
Issued
Feb 24, 1987
Status
CLEAR
Expires
Feb 28, 2027
Entity
Sole Owner
Financial & Insurance Coverage
Contractor Bond
Surety
Merchants Bonding Company (mutual)
Bond Number
101405715
Effective
Feb 28, 2025
Status
Cancelled
Cancelled
May 3, 2026
Workers' Compensation
Coverage
Exempt
Carrier
—
Policy Number
—
Effective
Feb 7, 2025
Expires
—
Alert

This contractor has a compliance issue in its public CSLB record:

  • Contractor bond cancelled
License StatusActive
Contractor BondCancelled
Workers' CompensationActive

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

Frequently asked questions
Is O'sullivan D F Construction licensed in California?

Yes. O'sullivan D F Construction holds California Contractors State License Board license number 506132. The license was first issued on February 24, 1987. It is valid through February 28, 2027.

What does O'sullivan D F Construction specialize in?

O'sullivan D F Construction is licensed for one CSLB classification: B General Building Contractor.

Where is O'sullivan D F Construction headquartered?

O'sullivan D F Construction is headquartered at P O Box 1092, Novato, CA 949481092, in Marin County, California.

Does O'sullivan D F Construction have an active surety bond on file with CSLB?

O'sullivan D F Construction has a previously-filed surety bond from Merchants Bonding Company (mutual) that is no longer active.

Does O'sullivan D F Construction carry workers' compensation coverage?

O'sullivan D F Construction reports an exempt workers' compensation status, meaning the business has no employees on payroll.

How do I verify O'sullivan D F Construction's contractor license?

You can verify O'sullivan D F Construction's license directly with the California Contractors State License Board at https://www.cslb.ca.gov/OnlineServices/CheckLicenseII/LicenseDetail.aspx?LicNum=506132.

Activity Timeline
  1. License issuedFeb 24, 1987
  2. WC coverage startsFeb 7, 2025
  3. Bond activeFeb 28, 2025
  4. Bond cancelledMay 3, 2026
  5. License expiresFeb 28, 2027
Other contractors in Marin County
Browse all Marin County contractors →