M J Plumbing Systems, C-36 Plumbing Contractor in Orange, CA
M J Plumbing Systems operating as a sole owner holds an active California contractor license (CSLB #911755), valid through Mar 31, 2028. First issued in 2008, the license has been on the CSLB roster for 18 years. It carries a single CSLB classification: C-36 — Plumbing Contractor. Records show an active surety bond on file with Western Surety Company and an exempt workers' compensation status (no employees on payroll). The business is based in Orange, in Orange County, California.
- License Number
- 911755
- Issued
- Mar 4, 2008
- Status
- CLEAR
- Expires
- Mar 31, 2028
- Entity
- Sole Owner
- Surety
- Western Surety Company
- Bond Number
- 70454393
- Effective
- Jan 1, 2023
- Status
- Active
- Coverage
- Exempt
- Carrier
- —
- Policy Number
- —
- Effective
- Mar 19, 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 M J Plumbing Systems licensed in California?
Yes. M J Plumbing Systems holds California Contractors State License Board license number 911755, which is active and in good standing. The license was first issued on March 4, 2008. It is valid through March 31, 2028.
What does M J Plumbing Systems specialize in?
M J Plumbing Systems is licensed for one CSLB classification: C-36 Plumbing Contractor.
Where is M J Plumbing Systems headquartered?
M J Plumbing Systems is headquartered at 1720 N Morningside St, Orange, CA 92867, in Orange County, California.
Does M J Plumbing Systems have an active surety bond on file with CSLB?
Yes. M J Plumbing Systems has an active California contractor surety bond filed with Western Surety Company.
Does M J Plumbing Systems carry workers' compensation coverage?
M J Plumbing Systems reports an exempt workers' compensation status, meaning the business has no employees on payroll.
How do I verify M J Plumbing Systems's contractor license?
You can verify M J Plumbing Systems's license directly with the California Contractors State License Board at https://www.cslb.ca.gov/OnlineServices/CheckLicenseII/LicenseDetail.aspx?LicNum=911755.
- License issuedMar 4, 2008
- Bond activeJan 1, 2023
- WC coverage startsMar 19, 2026
- License expiresMar 31, 2028
- Brothers Plumbing Heating & Air Conditioning#385443Costa Mesa·C-36 Plumbing Contractor
- Green Joe Plumbing#390325Costa Mesa·C-36 Plumbing Contractor
- E I De Smet Plumbing#379566Santa Ana·C-36 Plumbing Contractor
- Robinson Construction#377972Trabuco·B General Building Contractor
- Water Heater Man INC#372108Brea·C-36 Plumbing Contractor
- T & D Plumbing#363503Santa Ana·C-36 Plumbing Contractor
- Empire Pipe Cleaning and Equipment INC#363528Orange·C-36 Plumbing Contractor
- F & M Construction CO#366586Laguna Hills·A General Engineering Contractor
Working a California job with M J Plumbing Systems, 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 M J Plumbing Systems? Claim or correct this profile