Independent site · Not affiliated with CSLB or any state agency
Contractor LookoutCalifornia

Licensed Plumbers in Downey, California

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

  • 56licensed plumbers
  • 56active (Clear)
  • 0%with a suspension
  • 50%workers' comp exempt
  • 12.9 yrsmedian time licensed
  • 55.4%corp / LLC / partnership (44.6% sole owner)
  • 7new in the last 12 months
  • —change tracking began November 1, 2026

Downey is home to 56 plumbers in CSLB's license file, ranking #18 of 74 Los Angeles County cities for this trade. 100% are Clear.

50% report a workers' comp exemption, 1.2 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, 0%, is 4.6 points lower than the Los Angeles County rate for the same license (4.6%).

7 of these licenses are less than a year old, while 55.4% have been held for 10 years or more. The median is 12.9 years.

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 Downey

  1. Open the plumber's profile from the table below (or search Downey listings by name). Check that C-36 appears among its classifications and that the primary status reads Clear. What C-36 covers.
  2. Confirm it live with CSLB's Instant License Check. Statuses change between our weekly refreshes, especially workers' comp and bond suspensions.
  3. Get the bid and contract in writing with the license number on it. If the job tops $1,000 in labor and materials, a licensed plumber is required by law. See the $1,000 rule.

50 of 56 plumbers in Downey

Downey 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 Downey
Business nameLicense #StatusYearsWorkers' compBond
Mc Gough Plumbing 503269 Clear 39 Exempt On file
Gamma Plumbing & Heating & Air Conditioning 546523 Clear 38 Insured On file
Navarro's Plumbing 572913 Clear 37 Insured On file
M D Stainless Services 608186 Clear 35 Insured On file
Abe's Plumbing INC 613580 Clear 35 Insured On file
Keene Russell Plumbing 612529 Clear 35 Exempt On file
Pacific Power Engineering Technology INC 645405 Clear 34 Insured On file
Donate's Boiler Corporation 663324 Clear 33 Insured On file
M D Plumbing 688243 Clear 32 Exempt On file
Anthony Mark Plumbing 720060 Clear 30 Exempt On file
Downey Plumbing Heating & Air Conditioning CO INC 731172 Clear 29 Insured On file
Loya Javier 731681 Clear 29 Exempt On file
Vinnie's Plumbing 743581 Clear 28 Exempt On file
Medina Construction 750626 Clear 28 Exempt On file
Strickland Construction 759227 Clear 27 Insured On file
L J Construction A Partnership 762389 Clear 27 Exempt On file
Pro-Tech Plumbing CO 821490 Clear 23 Exempt On file
F B Plumbing Services 825936 Clear 23 Exempt On file
Domingo's Plumbing 861241 Clear 21 Insured On file
Upgrade Drain & Plumbing 865670 Clear 21 Exempt On file
Nabb Construction INC 871484 Clear 20 Insured On file
J C Plumbing 907706 Clear 18 Exempt On file
Velez Construction INC 919117 Clear 18 Insured On file
Jd Air Conditioning & Plumbing 921507 Clear 18 Insured On file
Breault Richer 922984 Clear 18 Exempt On file
Mr Plumber 4 Less 926191 Clear 17 Exempt On file
M P Construction 954725 Clear 16 Insured On file
Chris Neighborhood Plumbing 987397 Clear 13 Exempt On file
Morris Construction INC 991317 Clear 12 Insured On file
Greenway Home Services 1005396 Clear 11 Insured On file
A E I General Contractors 1015034 Clear 10 Exempt On file
R B L INC 1022118 Clear 9 Insured On file
Sosa Quality Construction INC 1053751 Clear 7 Insured On file
Breault Construction INC 1056934 Clear 7 Exempt On file
So Cal's Plumbing INC 1056731 Clear 7 Insured On file
Greentech Development INC 1072897 Clear 5 Insured On file
Southland Backflow and Plumbing Services 1074601 Clear 5 Exempt On file
Speedy Water Heaters and Plumbing INC 1074785 Clear 5 Insured On file
Metric Construction 1076758 Clear 5 Exempt On file
Davila Plumbing 1090062 Clear 4 Exempt On file
Elite Ramos Construction 1094720 Clear 4 Exempt On file
Megaflow Plumbing INC 1095385 Clear 4 Insured On file
Copperstate Plumbing 1100284 Clear 3 Insured On file
M & M Plumbing and Rooter INC 1110797 Clear 3 Exempt On file
Seasoned Plumbing LLC 1115380 Clear 2 Exempt On file
S T Plumbing Corp 1126588 Clear 2 Insured On file
Blackwell Family Plumbing INC 1139682 Clear 1 Insured On file
Slavi Yordanov 1143524 Clear 1 Exempt On file
Base Line Plumbing INC 1145399 Clear 1 Insured On file
Atg Plumbing INC 1149907 Clear <1 Exempt On file

See all 56 plumbers in Downey

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 Downey?

CSLB's current public file lists 56 plumbers with a Downey mailing address. 56 have a Clear status, and 91.1% 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?

CSLB issues the C-36 Plumbing Contractor classification for this work. In Los Angeles County, 100% of Downey's holders are Clear right now. The license requirement starts at $1,000 per job (the minor-work rule).

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 Downey plumbers, 50% are exempt (no employees), 50% insured and 0% without current coverage. Verify a policy with CSLB's insurer search (step by step).

Related

Plumbers in nearby cities

More plumbers lists in Los Angeles County

Other licensed trades in Downey

Guides