Diaz J Plumbing, C-36 Plumbing Contractor in Daly City, CA
Diaz J Plumbing operating as a sole owner holds an active California contractor license (CSLB #988378), valid through Nov 30, 2027. First issued in 2013, the license has been on the CSLB roster for 13 years. It carries a single CSLB classification: C-36 — Plumbing 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 Daly City, in San Mateo County, California.
- License Number
- 988378
- Issued
- Nov 9, 2013
- Status
- CLEAR
- Expires
- Nov 30, 2027
- Entity
- Sole Owner
- Surety
- Atlantic Specialty Insurance Company
- Bond Number
- 800206162
- Effective
- Nov 1, 2025
- Status
- Active
- Coverage
- Exempt
- Carrier
- —
- Policy Number
- —
- Effective
- Oct 13, 2025
- Expires
- —
This contractor warrants a closer look before contracting:
- Workers' comp listed as exempt
An automated summary of public CSLB data, not a credit score, rating, or endorsement. How we determine this
Is Diaz J Plumbing licensed in California?
Yes. Diaz J Plumbing holds California Contractors State License Board license number 988378, which is active and in good standing. The license was first issued on November 9, 2013. It is valid through November 30, 2027.
What does Diaz J Plumbing specialize in?
Diaz J Plumbing is licensed for one CSLB classification: C-36 Plumbing Contractor.
Where is Diaz J Plumbing headquartered?
Diaz J Plumbing is headquartered at 45 Arden Ct, Daly City, CA 94014, in San Mateo County, California.
Does Diaz J Plumbing have an active surety bond on file with CSLB?
Yes. Diaz J Plumbing has an active California contractor surety bond filed with Atlantic Specialty Insurance Company.
Does Diaz J Plumbing carry workers' compensation coverage?
Diaz J Plumbing reports an exempt workers' compensation status, meaning the business has no employees on payroll.
How do I verify Diaz J Plumbing's contractor license?
You can verify Diaz J Plumbing's license directly with the California Contractors State License Board at https://www.cslb.ca.gov/OnlineServices/CheckLicenseII/LicenseDetail.aspx?LicNum=988378.
- License issuedNov 9, 2013
- WC coverage startsOct 13, 2025
- Bond activeNov 1, 2025
- License expiresNov 30, 2027
- Hargens INC#592325South San Francisco·B General Building Contractor
- Mc Cann D J Construction#602469Montara·B General Building Contractor
- Allen Mechanical Plumbing CO#611082So San Francisco·C-36 Plumbing Contractor
- Economy Plumbing#613784Burlingame·A General Engineering Contractor
- Royal Plumbing Service#609288South San Francisco·C-36 Plumbing Contractor
- O'neill Plumbing Company#609234Pacifica·C-36 Plumbing Contractor
- Gruber Plumbing#619639Moss Beach·B General Building Contractor
- Lovazzano Mechanical Incorporated#619015Menlo Park·C-16 Fire Protection Contractor
Working a California job with Diaz J Plumbing, or chasing an unpaid invoice? These free tools track your mechanics lien deadlines and rights under California Civil Code §§8200–8848.
- California preliminary notice deadline calculatorFind your 20-day deadline and the lien rights at risk.
- Do I need a preliminary notice in California?Answer a few questions to see if the 20-day notice applies.
- Did I lose my California lien rights?Check whether your mechanics lien window has passed.
- Unpaid construction invoice in CaliforniaYour options and deadlines for collecting on a California job.
Own Diaz J Plumbing? Claim or correct this profile