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Hayes Plumbing service

Commercial Plumbing in Oshawa and Durham Region

Restaurant service, riser replacements, backflow testing and washroom upgrades for businesses along Simcoe Street, King Street, Dundas Street, Kingston Road and across Durham Region.

Get a free estimate

Tell us about the job and we will follow up. Emergencies: call (905) 576-3043 24/7.

Or call: (905) 576-3043

What is commercial plumbing?

Commercial plumbing covers the service, repair, installation and compliance work that keeps a business running: drain clearing, toilet and faucet repair, leak detection, shut-off valves, water heaters, backflow preventer installation and testing, apartment and condo riser replacements, restaurant service and kitchen and washroom renovations. Hayes Plumbing has served commercial clients across Oshawa and Durham Region for decades with licensed, WSIB certified plumbers.

What this service includes

  • Emergency plumbing for businesses
  • Drain clearing and rooter service
  • Toilet, faucet and sink repair and installation
  • Leak detection, repair and replacement
  • Shut-off valve and PRV replacement
  • Electric water heater repair and replacement
  • Backflow preventer installation, repair and testing
  • Apartment and condo riser replacements
  • Restaurant service and kitchen renovations
  • Washroom renovations, including accessible washrooms
“I have worked with Jeff Hayes.. the owner of Hayes plumbing for over 20 years. His commitment to customer satisfaction is top notch! We have done bath renovations, kitchen work.. heck we have even had them snake out things tenants put in toilets. Everything has been done with passion and expertise. Truly a professional at service delivery.”
Lindsay Smith
Durham Region • Hayes Plumbing customer

Signs you need commercial plumbing

If you notice any of these, it is time to call.

Call (905) 576-3043
  1. A washroom, kitchen or floor drain is backing up during business hours.
  2. Your annual backflow test is due.
  3. A riser in a multi-unit building is leaking or corroded.
  4. A washroom needs to be brought up to accessibility requirements.

Our commercial plumbing process

  1. Site visit

    We look at the building, the fixtures and the compliance requirements and discuss priorities with the manager or owner.

  2. Written scope and price

    Repairs and installations are quoted in writing.

  3. Work around your hours

    We schedule to minimize disruption to tenants, staff and customers.

  4. Document

    Backflow test results and service records are provided for your files and your municipality.

Trusted for commercial plumbing across Durham Region.

Call to book a visit or a free in-home estimate.

Hayes Plumbing service van

Family owned in Oshawa since 1961

Licensed and accountable

Licensed plumbers, WSIB certified, BBB accredited and members of the Greater Oshawa Chamber of Commerce.

Written pricing

Free in-home estimates and the price in writing before any work starts.

Local since 1961

Founded in Oshawa by Brian Hayes in 1961, with seven fully stocked service vehicles across Durham Region.

24/7 live operator

A real person answers emergency calls around the clock and dispatches from Oshawa.

What does commercial plumbing cost in Durham Region?

Commercial work is quoted per project after a site visit. Backflow testing, drain clearing, fixture replacement and repairs are priced in writing before we begin. See our 2026 Oshawa plumbing cost guide for planning ranges on common services.

Commercial Plumbing FAQs

Common questions about commercial plumbing in Oshawa and Durham Region.

Yes. Apartment and condo riser replacements, in-suite service and common area plumbing are part of our commercial work.

Yes. Restaurant drain clearing, fixture repair, water heaters and kitchen renovations are regular jobs for our team.

Yes. We provide annual testing with certified testers, installation and repair, and the documentation your municipality requires.

Yes. A live operator answers 24/7 at (905) 576-3043 and dispatches a licensed plumber.

Guides about commercial plumbing

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Need commercial plumbing now?

Call (905) 576-3043 for friendly service from Oshawa's plumbers since 1961.