Plumbing Cost in Ontario, CA in 2026
Most Plumbing projects in Ontario, CA cost between $300 and $6,000. The typical price is $1,400.
Labour and materials in Ontario run about 24% above the national average. These figures are adjusted for that, so they are not the national average you will find elsewhere.
What drives the price
- Accessible fixture swap versus opening walls or slab
- Pipe material — copper, PEX or cast iron replacement
- Emergency versus scheduled work
- Permit and inspection requirements
Usually included
- Licensed plumber labour
- Pipe, fittings and standard fixtures
Usually extra
- Drywall and finish repair
- Fixtures you supply
- Municipal tap or sewer connection fees
Plumbers in Ontario, CA
Businesses listed on Google near Ontario, CA. We are not affiliated with them and do not vet them — always confirm licensing and insurance before hiring.
All City Plumbing, Air & Electrical
4.9(8,231 reviews)
9447 London Way #102, Rancho Cucamonga, CA 91730
All Pro Cooling, Heating, Plumbing & Electrical
4.8(8,743 reviews)
2311 E Locust St, Ontario, CA 91761
AYS Plumbing & Rooter
4.9(1,780 reviews)
260 N Corporate Way, Upland, CA 91786
Scott McLeod Plumbing, Inc.
4.9(787 reviews)
8222 Foothill Blvd, Rancho Cucamonga, CA 91730
High speed rooter & plumbing
5.0(505 reviews)
10709 Vernon Ave, Ontario, CA 91762
Royalty Plumbing and Drain
5.0(497 reviews)
3200 E Guasti Rd Ste 100, Ontario, CA 91761