8,200 Ontario, CA Plumbing Contractors

When a construction or home improvement job involves installing or repairing water, gas or other pipes, it’s smart to hire a licensed plumbing contractor. His or her expertise can help prevent costly water damage to a home’s structural elements. Building a new California home or remodeling an existing one nearly always calls for a plumbing contractor as well. More 
Glendora, CA, 91741
13 miles from Ontario
Electrical Plumbing Heating & Air Conditioning Refrigeration General Contractor Home & Commercial Services & Repair. Improving Energy Efficiency and maintaining High Levels of... Read More
Rancho Santa Margarita, CA, 92688
29 miles from Ontario
We are a family-owned and operated company that has been servicing South Orange County for the past 25 years. We specialize in servicing both residential and commercial clients... Read More
Yorba Linda, CA, 92886
14 miles from Ontario
Since November of 1989, AA Atlas Plumbing, Heating, & Air has been a Family Owned and Women Operated Orange County plumbing, heating, and air conditioning company. We specialize... Read More
Rancho Cucamonga, CA, 91730
5 miles from Ontario
If you are looking for first-class plumbing service in the area then you have come to the right place!Call us today for friendly service, reasonable pricing, and knowledgeable... Read More
Brea, CA, 92821
17 miles from Ontario
For over 50 years, the family behind Best Electrical, Plumbing, Heating & Air has been proud to service Orange County. We've helped to solve the electrical, plumbing, heating, and... Read More
Big Bear City, CA, 92314
50 miles from Ontario
At Bear Valley Plumbing & Heating we are committed to becoming your Big Bear plumber, heating, and air conditioning company. We do that in the best way we know how, by keeping the... Read More
Arneson (877) 433-6885
Temecula, CA, 92592
50 miles from Ontario
We are a family-owned and operated plumbing company that offers solutions for all your plumbing needs. We do , Water heaters,Faucets,Toilets, Garbage Disposals,Showers, sewers &... Read More
APEX PLUMBING (888) 266-5591
Los Angeles, CA, 90001
35 miles from Ontario
As professional plumbers in Los Angeles that take pride on good quality and the provision of very durable services we make sure we use only the best quality plumbing materials in... Read More
Dakota Plumbing, Inc (949) 204-7556
Fountain Valley, CA, 92708
30 miles from Ontario
All manner of plumbing service and repair including kitchen and bath remodels Read More
AAP All American Plumbing (855) 893-3601
Mira Loma, CA, 91752
9 miles from Ontario
We offer fast, friendly, and fair Plumbing and Drain Cleaning services throughout San Bernardino, Riverside and the San Gabriel Valley. Our plumbing services include every... Read More
Riverside, CA, 92501
17 miles from Ontario
Thistle Plumbing (626) 616-9353
Pasadena, CA
29 miles from Ontario
Specialize in rooter, hydrojetting and sewer camera inspections Read More
Lakewood, CA, 90715
29 miles from Ontario
Western Heating, Air Conditioning, & Plumbing has been providing both residential and commercial customers in LA and Orange Counties with quality and reliable plumbing repairs and... Read More
Fountain Valley, CA, 92708
30 miles from Ontario
The most advanced tankless technology and The #1 tankless manufacturer in the world. Read More
Plumbing Installs (714) 455-9346
huntington beach, CA, 92647
32 miles from Ontario
Tankless and Water Heaters Installation-Service-Repair Same day Installation and best price Guarantee!!! Read More
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What Does a Plumbing Contractor Do?


A plumbing contractor handles the installation and repair of water, sewage and natural gas pipes throughout a home, as well as interior and exterior faucets and fixtures. Plumbing contractors are also trained to work with water mains, septic tanks, laundry appliances, water heaters, sump pumps and other plumbing and pipe systems. Because plumbing work is done largely behind walls and beneath floors, some plumbing contractors can repair or replace tile, stonework and other surfaces. Although some California plumbing contractors are generalists, others specialize in specific areas: residential emergencies and repairs, remodeling, natural gas lines, sprinkler systems and more.

Questions to ask a prospective plumbing contractor:


  • How long have you been in the business?
  • How many projects like mine have you completed?
  • Who will be working on the project?
  • Are the workers employees or subcontractors?
  • Can you provide me with references?
  • Are you and your employees licensed and insured?
  • What license(s) do you have?
  • How do you charge, and what does that include?
  • Can you give me a written estimate?
  • What do your services include?
  • How will I be charged for parts and materials?
  • Who will make repairs to any structural damage that results from the job?
  • When can this job get done?
  • What happens when cost exceeds the budget? What about changes to materials or labor pricing?
  • What will I need to provide?
  • Are there any important considerations or concerns you foresee with this project?

Find a plumbing contractor on Houzz. Narrow your search in the Professionals section of the website to Ontario, CA plumbing contractors. You may also look through photos of California projects to find a plumbing contractor who has worked on a project similar to yours. If you’re planning a large-scale project, find other professionals on Houzz who can help get the job done.
Professional Categories in Ontario
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