Public CSLB records

Costello Denis M, B General Building Contractor in San Diego, CA

License #884110·Sole Owner·San Diego, San Diego County
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Summary

Costello Denis M operating as a sole owner holds California contractor license #884110, which is currently expired (lapsed Sep 30, 2026) and not valid to contract until it is renewed. First issued in 2006, the license has been on the CSLB roster for 20 years. It carries a single CSLB classification: B — General Building Contractor. Records show an active surety bond on file with Travelers Casualty and Surety Company of America and an exempt workers' compensation status (no employees on payroll). The business is based in San Diego, in San Diego County, California.

Business Information
Address
P O Box 99635
San Diego, CA 92169
License Details & Classifications
License Number
884110
Issued
Sep 13, 2006
Status
CLEAR
Expires
Sep 30, 2026
Entity
Sole Owner
Financial & Insurance Coverage
Contractor Bond
Surety
Travelers Casualty and Surety Company of America
Bond Number
108442451
Effective
Mar 4, 2026
Status
Active
Workers' Compensation
Coverage
Exempt
Carrier
—
Policy Number
—
Effective
Sep 20, 2024
Expires
—
Alert

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

  • License expired
License StatusInactive / Expired
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 Costello Denis M licensed in California?

Costello Denis M previously held California Contractors State License Board license number 884110, but the license expired on September 30, 2026 and is not currently valid. It was first issued on September 13, 2006.

What does Costello Denis M specialize in?

Costello Denis M is licensed for one CSLB classification: B General Building Contractor.

Where is Costello Denis M headquartered?

Costello Denis M is headquartered at P O Box 99635, San Diego, CA 92169, in San Diego County, California.

Does Costello Denis M have an active surety bond on file with CSLB?

Yes. Costello Denis M has an active California contractor surety bond filed with Travelers Casualty and Surety Company of America.

Does Costello Denis M carry workers' compensation coverage?

Costello Denis M reports an exempt workers' compensation status, meaning the business has no employees on payroll.

How do I verify Costello Denis M's contractor license?

You can verify Costello Denis M's license directly with the California Contractors State License Board at https://www.cslb.ca.gov/OnlineServices/CheckLicenseII/LicenseDetail.aspx?LicNum=884110.

Activity Timeline
  1. License issuedSep 13, 2006
  2. WC coverage startsSep 20, 2024
  3. Bond activeMar 4, 2026
  4. License expiredSep 30, 2026
Other contractors in San Diego County
California lien & payment resources

Working a California job with Costello Denis M, 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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