Plumbing contractors licensed in California

Every active California license that lists plumbing work, sorted by name.

• North Star Plumbing & Fire Protection INC
  Plumbing · San Francisco · #1031709
  Active Insurance current
• North Star Plumbing INC
  Plumbing · Seaside · #1158889
  Active No insurance on file
• North State Plumbing INC
  Plumbing · Chico · #653488
  Active Insurance current
• North Valley Water Solutions
  Plumbing · Gridley · #1152673
  Active No insurance on file
• North West Plumbing
  Plumbing · Santa Rosa · #994930
  Active No insurance on file
• North West Plumbing INC
  Plumbing · Reno · #1089089
  Active Insurance current
• Northbound Plumbing
  Plumbing · Santa Rosa · #1088900
  Active No insurance on file
• Northcoast Plumbing LLC
  Plumbing · Eureka · #1019695
  Active No insurance on file
• Northern Marin Plumbing
  Plumbing · San Rafael · #1022066
  Active Insurance expired
• Northern Plumbing
  Plumbing · Rohnert Park · #1111384
  Active Insurance current
• Northern Plumbing
  Plumbing · Ukiah · #1129026
  Active Insurance current
• Northern Plumbing INC
  Plumbing · Millbrae · #1076231
  Active Insurance expiring soon
• Northgate Construction Services
  General Contractors, Plumbing · Clovis · #716418
  Active Insurance current
• Northmark Plumbing LLC
  Plumbing · Torrance · #1161635
  Active Insurance current
• Northmont Plumbing
  Plumbing · La Mesa · #1156997
  Active No insurance on file
• Northside Plumbing
  Plumbing · Fairfax · #1056012
  Active No insurance on file
• Northside Plumbing INC
  Plumbing · Canyon Country · #619132
  Active Insurance expiring soon
• Northstar Phac INC
  Plumbing, HVAC · Ontario · #916254
  Active No insurance on file
• Northwest Plumbing Solutions LLC
  Plumbing · Mc Kinleyville · #1147550
  Active Insurance current
• Northwestern Plumbing CO
  Plumbing · Los Angeles · #886021
  Active No insurance on file
• Northwind Heating and Air INC
  Plumbing, HVAC · Tulare · #1066747
  Active Insurance current
• Northwood Backflow Services
  Plumbing · Redding · #749187
  Active No insurance on file
• Norwalk-La Mirada Plumbing & Heating CO INC
  Plumbing, HVAC · Norwalk · #271767
  Active Insurance current
• Nova Electric
  General Contractors, Electrical · Magalia · #701456
  Active No insurance on file
• Nova Plumbing INC
  Plumbing · Irvine · #1091627
  Active No insurance on file
• Nova Service INC
  Plumbing · Fresno · #771417
  Active Insurance current
• Novak Plumbing LLC
  Plumbing · Boulder Creek · #1152073
  Active No insurance on file
• Novelty Construction INC
  General Contractors, Electrical · Daly City · #1104781
  Active No insurance on file
• Novin Construction INC
  General Contractors, Electrical · Walnut Creek · #1091697
  Active Insurance current
• Novo Maintenance LLC
  Plumbing · Los Angeles · #1143808
  Active Insurance current
• Novoline Plumbing INC
  Plumbing · Panorama City · #1144174
  Active No insurance on file
• Nowakowski INC
  Plumbing, HVAC · Oceanside · #1118230
  Active Insurance current
• Np Plumbing
  Plumbing · Windsor · #1162080
  Active No insurance on file
• Npl Construction CO
  General Contractors, Electrical · Phoenix · #732974
  Active Insurance current
• Nrba Plumbing & Water Heating
  Plumbing · Glendora · #1158186
  Active No insurance on file
• Nrg Plumbing INC
  Plumbing · Monterey · #982241
  Active Insurance current
• Nrp Plumbing INC
  Plumbing · San Jose · #1162309
  Active No insurance on file
• Ns Plumbing
  Plumbing · San Jose · #1147112
  Active No insurance on file
• Nswc Mechanical Service LLC
  Electrical, Plumbing · Anaheim · #1033724
  Active Insurance current
• Nt Bay Area Construction INC
  General Contractors, Plumbing · San Jose · #1035630
  Active Insurance current
• Ntp INC
  Plumbing · El Cajon · #1040373
  Active No insurance on file
• Nts Plumbing LLC
  Plumbing · Lakeside · #1155933
  Active No insurance on file
• Nu-Way Plumbing
  Plumbing · Long Beach · #1009351
  Active No insurance on file
• Nu/Age Development INC
  General Contractors, Plumbing · Yorba Linda · #694945
  Active Insurance current
• Nuevo Plumbing INC
  Plumbing · Nuevo · #998218
  Active Insurance current
• Nuflow Central Coast
  Plumbing · Orcutt · #1120374
  Active No insurance on file
• Nugent Plumbing Incorporated
  Plumbing · San Francisco · #1025211
  Active No insurance on file
• Numbers Plumbing
  Plumbing · Monterey Park · #910541
  Active Insurance current
• Numero Uno Plumbing
  Plumbing · Oxnard · #542755
  Active No insurance on file
• Nunez Maintenance Services LLC
  General Contractors, Plumbing · San Bernardino · #1095109
  Active No insurance on file
• Nursery Outlet Incorporated
  Plumbing, Landscaping · Gilroy · #511909
  Active Insurance expired
• Nuview Plumbing LLC
  Plumbing · Nuevo · #1133933
  Active No insurance on file
• Nuvision Plumbing Company
  Plumbing · Salinas · #1070793
  Active Insurance current
• Nviro
  General Contractors, Electrical · San Luis Obispo · #1056567
  Active Insurance current
• Nwestco LLC
  General Contractors, Electrical · Kalispell · #1073967
  Active Insurance current
• Nxp Engineering
  General Contractors, Plumbing · Monterey · #1107857
  Active Insurance current
• Nxt Level Plumbing INC
  Plumbing · Los Angeles · #1146853
  Active No insurance on file
• O & D Plumbing
  Plumbing · Bellflower · #763246
  Active No insurance on file
• O & J Plumbing Services INC
  Plumbing · San Diego · #1017676
  Active Insurance expiring soon
• O & M Industries
  General Contractors, Electrical · Arcata · #284930
  Active Insurance expired
• O & O Plumbing CO INC
  Plumbing · Valley Village · #938467
  Active No insurance on file
• O & Z Plumbing Work INC
  Plumbing · West Covina · #911682
  Active Insurance current
• O B D Plumbing
  Plumbing · Eureka · #820052
  Active No insurance on file
• O B Plumbing
  Plumbing · Carmichael · #914612
  Active No insurance on file
• O C - Rooter
  Plumbing · Anaheim · #1018075
  Active No insurance on file
• O C Backflow
  Plumbing · Santa Ana · #1039973
  Active No insurance on file
• O C Mc Donald CO INC
  General Contractors, Plumbing · San Jose · #177271
  Active Insurance current
• O C Plumbing
  Plumbing · San Jose · #1028918
  Active Insurance current
• O C Plumbing
  Plumbing · Stanton · #757633
  Active No insurance on file
• O C Plumbing
  Plumbing · Placentia · #825143
  Active No insurance on file
• O G Plumbing
  Plumbing · Napa · #1034291
  Active Insurance current
• O K Plumbing INC
  Plumbing · Los Angeles · #743392
  Active No insurance on file
• O Leary Plumbing INC
  Plumbing · Sunnyvale · #1008614
  Active Insurance expiring soon
• O N B Plumbing
  Plumbing · Lakewood · #732049
  Active No insurance on file
• O P Consultants INC DBA John Omahen Plumbing
  General Contractors, Plumbing · Alpine · #567655
  Active Insurance current
• O P Plumbing INC
  Plumbing · Santa Ana · #1020988
  Active Insurance expiring soon
• O S B Plumbing
  Plumbing · Chula Vista · #961842
  Active No insurance on file
• O S Plumbing INC
  Plumbing · Los Angeles · #966025
  Active Insurance current
• O'briant Plumbing
  Plumbing · Rialto · #982324
  Active No insurance on file
• O'brien Mechanical INC II
  Plumbing, HVAC · San Francisco · #754629
  Active Insurance current
• O'connor Plumbing & Fire Protection INC
  Plumbing · South San Francisco · #498866
  Active Insurance current
• O'connor Plumbing Company INC
  Plumbing · Oak Hills · #1072345
  Active Insurance current
• O'donovan Plumbing INC
  Plumbing · San Francisco · #582534
  Active Insurance current
• O'dowd Plumbing INC
  Plumbing · Rohnert Park · #522217
  Active No insurance on file
• O'farrell Plumbing
  Plumbing · Oregon House · #771562
  Active No insurance on file
• O'hearn Plumbing
  Plumbing · Van Nuys · #504594
  Active Insurance current
• O'keeffe's INC
  General Contractors, Electrical · Brisbane · #101981
  Active Insurance current
• O'leary Construction Services INC
  General Contractors, Plumbing · Ladera Ranch · #952484
  Active Insurance expired
• O'malley's Plumbing
  Plumbing · Cayucos · #717290
  Active No insurance on file
• O'neill Plumbing Company
  Plumbing · Pacifica · #609234
  Active No insurance on file
• O'ryan Plumbing INC
  Plumbing · La Mesa · #894777
  Active No insurance on file
• O'shea's Plumbing
  Plumbing · Costa Mesa · #399676
  Active No insurance on file
• Oak Creek Plumbing
  Plumbing · Hollister · #886007
  Active No insurance on file
• Oak Hills Plumbing
  Plumbing · Shingle Springs · #1120745
  Active No insurance on file
• Oak Plumbing INC
  Plumbing · Benicia · #1018855
  Active Insurance current
• Oakhurst Plumbing
  Plumbing · Oakhurst · #377045
  Active Insurance current
• Oakland Rooter Plumbing INC
  Plumbing · Oakland · #965873
  Active Insurance current
• Oakley Plumbing INC
  Plumbing · Torrance · #926402
  Active Insurance current
• Oakridge Construction & Energy
  General Contractors, Electrical · Yucaipa · #975448
  Active Insurance current
• Oakridge Maintenance
  General Contractors, Plumbing · Winters · #643178
  Active Insurance current

Last checked against state records on Oct 10, 2026. How we get this data.