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Licensed Plumbers in Windsor, California

Updated November 1, 2026 from CSLB's public license file · C-36 Plumbing Contractor

  • 26licensed plumbers
  • 25active (Clear)
  • 3.8%with a suspension
  • 42.3%workers' comp exempt
  • 13 yrsmedian time licensed
  • 53.8%corp / LLC / partnership (46.2% sole owner)
  • 1new in the last 12 months
  • —change tracking began November 1, 2026

Windsor is home to 26 plumbers in CSLB's license file, ranking #5 of 6 Sonoma County cities for this trade. 96.2% are Clear.

42.3% report a workers' comp exemption, 8.9 points lower than the statewide figure for plumbers (51.2%), so many of these businesses say they have no employees. The share with a suspension (3.8%) is close to the Sonoma County rate for the same license (4.7%).

The median plumber here has held a license for 13 years (less than the statewide median of 13.4), and 1 license was issued in the last 12 months.

In California this work generally calls for the C-36 Plumbing Contractor license (or a B license when it is part of a larger multi-trade job). See the C-36 Plumbing Contractor guide for what the license covers.

How to check a plumber's license in Windsor

  1. Look the company up by name or license number (search Windsor). On the profile, confirm three things: Clear status, the C-36 license for this kind of work, and a contractor's bond on file.
  2. Confirm it live with CSLB's Instant License Check. Statuses change between our weekly refreshes, especially workers' comp and bond suspensions.
  3. Ask for the pocket license and a photo ID and match the name to your contract. Work of $1,000 or more needs a license (the $1,000 rule), and a down payment can't exceed $1,000 or 10% (down payment rules).

All 26 plumbers in Windsor

Windsor plumbers sorted with Clear licenses first, then by years licensed. Badges reflect CSLB's file dated November 1, 2026, not a rating of anyone's work.

Licensed plumbers in Windsor
Business nameLicense #StatusYearsWorkers' compBond
Azevedo Plumbing 610882 Clear 35 Insured On file
Waterworks Industries Incorporated 678182 Clear 33 Insured On file
Borg John Plumbing Incorporated 690949 Clear 32 Insured On file
Riverside Electric 706815 Clear 31 Exempt On file
Sonoma County Plumbing INC 748975 Clear 28 Insured On file
Rogers Radiant INC 786292 Clear 26 Insured On file
Leland Plumbing Heating & Air Cond 848071 Clear 22 Insured On file
Henry Mechanical 855174 Clear 21 Insured On file
Mike's Plumbing & Rooter 885932 Clear 20 Insured On file
Jv Plumbing & Backflow 955698 Clear 15 Exempt On file
J T Z Plumbing 961646 Clear 15 Exempt On file
Clearline Plumbing 970655 Clear 14 Exempt On file
B A M Plumbing INC 979996 Clear 13 Insured On file
Wahl Plumbing INC 995671 Clear 12 Insured On file
Morris Jason Plumbing 1004678 Clear 11 Exempt On file
Holman Plumbing Services 1025061 Clear 9 Insured On file
Brester - Smith Plumbing 1075089 Clear 5 Exempt On file
Herrera Plumbing 1094579 Clear 4 Exempt On file
American Radiant & Water Heating INC 1102680 Clear 3 Insured On file
Bigham Home Services 1109652 Clear 3 Insured On file
Same Day Heating, Cooling & Plumbing 1113715 Clear 2 Insured On file
Weatherly Water Heaters and Plumbing Services 1116920 Clear 2 Exempt On file
Integrity Plumbing Service & Repair 1129600 Clear 1 Exempt On file
Waterworks Industries LLC 1137599 Clear 1 Insured On file
Np Plumbing 1162080 Clear <1 Exempt On file
A M T Plumbing 1013483 Susp: unpaid judgment 10 Exempt On file

Source: CSLB public data · Updated November 1, 2026 Status can change at any time. Verify on CSLB's Instant License Check.

Frequently asked questions

How many licensed plumbers are in Windsor?

CSLB's current public file lists 26 plumbers with a Windsor mailing address. 25 have a Clear status, and 84.6% show no issues at all in the file (no suspension, no pending action, bond on file, not near expiration).

What license does a plumber need in California?

Look for C-36 on the license. 26 businesses in Windsor hold it. Small jobs under $1,000 with no permit and no employees are exempt; everything else needs a license (details).

How do I check a plumber's workers' comp?

Each profile shows the workers' comp type, insurer and policy dates from CSLB's file. Among Windsor plumbers, 42.3% are exempt (no employees), 57.7% insured and 0% without current coverage. Verify a policy with CSLB's insurer search (step by step).

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