Plumbquest, C-36 Plumbing Contractor in Los Angeles, CA
Plumbquest operating as a sole owner holds an active California contractor license (CSLB #971902), valid through Apr 30, 2028. First issued in 2012, the license has been on the CSLB roster for 14 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 Los Angeles, in Los Angeles County, California.
- License Number
- 971902
- Issued
- Apr 6, 2012
- Status
- CLEAR
- Expires
- Apr 30, 2028
- Entity
- Sole Owner
- Surety
- Atlantic Specialty Insurance Company
- Bond Number
- 800231917
- Effective
- Feb 13, 2026
- Status
- Active
- Coverage
- Exempt
- Carrier
- —
- Policy Number
- —
- Effective
- Mar 14, 2026
- 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 Plumbquest licensed in California?
Yes. Plumbquest holds California Contractors State License Board license number 971902, which is active and in good standing. The license was first issued on April 6, 2012. It is valid through April 30, 2028.
What does Plumbquest specialize in?
Plumbquest is licensed for one CSLB classification: C-36 Plumbing Contractor.
Where is Plumbquest headquartered?
Plumbquest is headquartered at 349 3/4 N Sycamore Ave 1, Los Angeles, CA 90036, in Los Angeles County, California.
Does Plumbquest have an active surety bond on file with CSLB?
Yes. Plumbquest has an active California contractor surety bond filed with Atlantic Specialty Insurance Company.
Does Plumbquest carry workers' compensation coverage?
Plumbquest reports an exempt workers' compensation status, meaning the business has no employees on payroll.
How do I verify Plumbquest's contractor license?
You can verify Plumbquest's license directly with the California Contractors State License Board at https://www.cslb.ca.gov/OnlineServices/CheckLicenseII/LicenseDetail.aspx?LicNum=971902.
- License issuedApr 6, 2012
- Bond activeFeb 13, 2026
- WC coverage startsMar 14, 2026
- License expiresApr 30, 2028
- Stamper Louis Company the#300610Reseda·B General Building Contractor
- Cypress Heating & Air Conditioning#302865Glendora·C-20 HVAC Contractor
- Maloney E L CO#296761San Marino·B General Building Contractor
- Farnan J M CO INC#298016La Verne·B General Building Contractor
- Silver Construction#306913Los Angeles·B General Building Contractor
- Mr Plumbing#284041Lancaster·B General Building Contractor
- Mc Carron Walt General Contractor#283483Woodland Hills·B General Building Contractor
- Dempsey F W Const CO#284892Long Beach·A General Engineering Contractor
Working a California job with Plumbquest, 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 Plumbquest? Claim or correct this profile