Find and Invite the Best Commercial Plumbing Contractors in Fontana, CA
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15 Best Plumbing contractors in Fontana, CA
Downtobid vets each subcontractor's specialties, capabilities, and contact details for complete accuracy.

Dawson Company
Pomona, CA 91768
Dawson Company is a trusted plumbing and HVAC supply resource for building owners, facilities managers, contractors, consulting engineers, and wholesalers in the residential, industrial, and commercial construction markets. The company also embraces new technological innovations and market demands for sustainable and efficient systems within the commercial HVAC market.
Verified
Specializations (13)
Airport
Financial
Fitness
Grocery

Five Stars Plumbing
319 E. Bishop St. Santa Ana, CA 92701
Five Stars Plumbing is a professional plumbing service provider in Santa Ana, California, offering emergency repairs, new construction plumbing services, and maintenance with 17 years of experience. They are dedicated to delivering reliable, efficient, and quality plumbing solutions at competitive prices, and are available 24/7 for residential and commercial needs.
Verified
Active contractor
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RL Wells Air Conditioning & Heating
Corona, CA 92880
RL Wells Air Conditioning & Heating is a family-owned and operated HVAC company specializing in a full spectrum of heating, ventilation, air conditioning, and refrigeration repairs and installations, offering high-quality work and a commitment to customer satisfaction with services such as HVAC maintenance, repair, and installation, including tankless water heaters and mini-split systems.
Verified
Active contractor
Specializations (4)
Financial
Grocery
Office Building
Religious

Near & Best Plumber Los Angeles
1221 N Kings Rd Unit 307, West Hollywood, CA 90069
Near and Best Plumber Los Angeles is a reliable plumbing company that offers competitive rates & efficient service. We have over 25 years of experience. Call now!
Verified
Active contractor

Craftman Plumbing
36516 Sierra Hwy, Palmdale, CA 93550
Craftman Plumbing Inc. is a top-rated plumbing company based in Palmdale, CA, offering a range of services including whole house repiping, water heater repair, water leak detection, commercial and residential plumbing, and new construction plumbing. The company is committed to delivering quality service, with a team of expert plumbers utilizing the latest tools and equipment, and offers 24/7 emergency plumbing services.
Verified
Active contractor
Coast 2 Coast Plumbing
P.O. Box 774 Stantion, CA 90680
Coast 2 Coast Plumbing is a full-service commercial, mechanical, and plumbing company specializing in sewer maintenance, fixture maintenance, storm drain system maintenance, and various plumbing repairs including backflow testing, pump systems, and sewer line repairs. With 14 years of experience servicing Southern and Northern California, they offer 24/7 emergency services and handle everything from routine maintenance to burst pipes, holding California State License #900704.
Verified
Active contractor
All Star Plumbing & Fire Sprinkler
Lake Forest, CA 92610
All Star Plumbing & Fire Sprinkler, Inc. is a local, family-owned business in Orange County, CA, offering a range of plumbing and fire sprinkler services, including residential and commercial fire sprinkler systems, irrigation systems, backflow services, and water heater installations. With over 25 years of experience, the company is state-licensed, fully bonded, and insured, providing service warranties and competitive prices.
Verified
Active contractor
Specializations (1)
Healthcare

Kg Plumbing
CA 91367
KG Plumbing is a fully licensed and insured plumbing company based in Granada Hills, California. The company offers a range of services including gas, water and sewer installations, bathroom plumbing, and commercial plumbing.
Verified
Specializations (2)
Healthcare
Restaurant

Specializations (1)
Restaurant

Express Plumbing
4621 S. Cooper St. #131 Arlington, TX, 76017
Express Plumbing Company is a family-owned and operated commercial plumbing business that has been serving Los Angeles, Orange, Riverside, Ventura, and parts of San Bernardino and San Diego counties since 1986, with an additional branch in Arlington, Texas.
Verified
Active contractor
Specializations (4)
Fitness
Restaurant
Retail - Shopping Center
Tenant Improvements
MB Plumbing
417 S Associated Rd, Brea, CA 92821
MB Plumbing provides comprehensive plumbing services for both residential and commercial properties. The company offers fixture installations, leak repairs, and maintenance services, and prides itself on its commitment to quality, reliability, and customer satisfaction.
Verified
Active contractor

Southwest Mechanical
805 N Dodsworth Ave, Covina, CA 91724
Southwest Mechanical Inc has provided HVAC, Plumbing, Boiler & hot water, electrical & energy management systems for 15 years in the Los Angeles area.
Verified
Specializations (4)
Education
Healthcare
Hospitality
Office Building
Good to know insights about Plumbing contractors in Fontana, CA
Bidding difficulty
High
Average response time
3 days
Average interest distance
30 miles
Average lead time to bid
15 days
How far are Plumbing contractors in Fontana, CA willing to travel?
Every trade and region has difference sensitivity to distance. We grouped distances into 4 categories to help you understand the distribution of 70 bid packages. The ratios of bidding contractors per distance group are 26%, 19%, 6%, and 0%.
How much lead time do Plumbing contractors in Fontana, CA need to bid?
Every trade and region has difference sensitivity to due time. We grouped due times into 3 categories to help you understand the distribution of 38 bid packages. The ratios of bidding projects per due time group are 30%, 19%, and 29%.
Commercial Plumbing contractors insights in Fontana, CA
Explore 588 verified Plumbing contractors in Fontana, CA. Our platform analyzes real bidding activity, response times, and project preferences to help you make informed decisions. These insights are based on actual market data to streamline your contractor selection process.
Total contractors
588 contractors
Total union contractors
12 union contractors
Total non-union contractors
429 non-union contractors
Total minority-owned businesses
16 minority-owned businesses
Total women-owned businesses
3 women-owned businesses
What certifications do Plumbing contractors hold?
Professional certifications and licenses held by Plumbing contractors in Fontana, CA, including OSHA safety training, trade-specific licenses, and manufacturer certifications required for specific project types.
What project types are Plumbing contractors bidding on?
Project types that Plumbing contractors in Fontana, CA are actively bidding on, including commercial office buildings, healthcare facilities, educational institutions, retail spaces, and industrial facilities.
What project owners are Plumbing contractors bidding for?
Top general contractors and project owners that Plumbing contractors in Fontana, CA are bidding for, showing which construction firms and developers are most active in the local market.
Maxi
Cava
Gap
Target
REI
Save A Lot
Home Depot
Milestones
Marriott
Plumbing projects insights in Fontana, CA
Explore 44 Plumbing construction projects in Fontana, CA. Our analysis covers project sizes, building types, and market activity patterns to help contractors make strategic bidding decisions based on actual project data.
Total projects
44 projects
Average square footage
7,160 square feet
Maximum square footage
59,029 square feet
What square footage ranges are Plumbing projects in?
Distribution of Plumbing project sizes in Fontana, CA by square footage. Small projects include tenant improvements and retail spaces. Medium projects encompass commercial buildings and office spaces. Large projects represent major developments requiring significant resources and bonding capacity.
What construction sectors are Plumbing projects in?
Building types and construction sectors for Plumbing projects in Fontana, CA, including commercial office buildings, healthcare facilities, educational institutions, retail spaces, industrial facilities, and government projects.
Why Downtobid is the Go-To Platform for Contractors
"We have used Downtobid for our ITBs and so far our experience has been very positive. It has saved me time on the initial page turn and I really like the number of responses we're starting to see from our subcontractors!"
"The first time our company was able to travel outside Atlanta! Bidding in a new market and wasn't getting any hits on Drywall. Requested a boost and with 5 days I had 2 committed bidders and 1 submission. Using them on my next project."
"I love, the personalization of it. You get it more directed towards the contractors that we need. You make it a little more personal than putting it on Blue Book or Planhub or anything like that. You let us communicate with the subcontractors, so we can narrow it down from what you've already narrowed it down from. We get more detailed, correct quotes that we're looking for from you guys as opposed to maybe other places."
Why Downtobid is the Go-To Platform for Contractors
"We have used Downtobid for our ITBs and so far our experience has been very positive. It has saved me time on the initial page turn and I really like the number of responses we're starting to see from our subcontractors!"
"The first time our company was able to travel outside Atlanta! Bidding in a new market and wasn't getting any hits on Drywall. Requested a boost and with 5 days I had 2 committed bidders and 1 submission. Using them on my next project."
"I love, the personalization of it. You get it more directed towards the contractors that we need. You make it a little more personal than putting it on Blue Book or Planhub or anything like that. You let us communicate with the subcontractors, so we can narrow it down from what you've already narrowed it down from. We get more detailed, correct quotes that we're looking for from you guys as opposed to maybe other places."
FAQs
How can Downtobid help me find the best commercial Plumbing contractors in Fontana, CA?
Downtobid helps you find the best Plumbing contractors in Fontana, CA and submit bid requests for your projects. You provide project details, and the contractors respond with their bids through the platform.
Requesting bids from Fontana, CA-based Plumbing contractors
You can invite a contractor directly through our platform. Visit the contractor’s profile and click ‘Invite to Bid.’ Fill out the project details, including scope, timeline, and specific needs. Contractors in Fontana, CA will then respond with their bids. It’s often helpful to call contractors after submitting a request, especially if your project is urgent.
Contractor verification process on Downtobid
Downtobid sets itself apart by verifying each contractor through a multi-step process. We use AI to ensure that contractor information, including trades, is accurate. We cross-check details using databases, public records, and Google Maps to confirm that businesses are active and their contact information is up-to-date before listing them.
Essential information for Plumbing project bid requests
When submitting a bid request, include clear details about your project, such as materials needed, deadlines, and any specific requirements. The more specific you are, the better the contractor can assess and quote the job accurately.
Tips for contacting local Plumbing professionals
If your project is urgent, it’s a good idea to call the contractor directly after submitting a bid request. This helps ensure they understand the timeline and scope of work, especially if immediate service is needed.
Managing bids for large-scale Plumbing projects
If you have a larger project and don’t want to contact each contractor individually, you can reach out to us directly. We offer an ITB (Invitation to Bid) platform where you can manage bids from multiple contractors at once.
Expected response times from Fontana, CA contractors
Most Plumbing contractors will respond within 24-48 hours, depending on the complexity of your request. However, response times may vary – so be sure to follow up!
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