Renovating a kitchen or bathroom involves many moving parts, and your plumber sits right at the center of it all. Poor rough-in work, drains sloped the wrong way, or supply lines relocated without permits can turn into expensive problems months after your renovation wraps up. You might face permit failures, water damage behind finished walls, or the nightmare of tearing out tile to fix what should have been done right the first time.

Toronto's older homes make this even trickier. Many properties still have cast iron drains, galvanized pipes, and clay sewer laterals hiding behind the walls. Working with these older systems takes local know-how, not just general plumbing skills. This guide walks you through five Toronto plumbers with proven renovation experience: a Red Seal-certified east-end specialist working on high-rises, a 15-year GTA company with a written Code of Ethics, a 55-year Toronto name trusted for specialty work, a nearly 40-year company founded by a master plumber, and a 2006-founded business with engineering credentials and tiered warranties on renovation jobs.

How to Select Top Plumbers for Kitchen and Bathroom Renovations in Toronto

We put together this list in April 2026 by reviewing company websites, Ontario licensing records, service offerings, renovation capabilities, warranty details, and public company data for each plumber.

Here's what we looked for:

• Ontario Licence and Renovation Permits: Every plumber doing renovation work in Toronto needs a valid Certificate of Qualification and must pull the right permits, since unpermitted work creates resale headaches and liability if something goes wrong.

• Renovation-Specific Experience: Kitchen and bathroom plumbing calls for drain relocation, code-compliant rough-ins, supply upgrades, and fixture installation skills that differ from repair calls, so check that your contractor has documented renovation work under their belt.

• Capacity to Coordinate with Other Trades: Your plumber will share the site with tilers, electricians, and general contractors, so ask how they manage scheduling and avoid delays that can hold up your entire timeline.

• Warranty on Renovation Work: Renovation warranties should cover both parts and labour on new installations, and the terms matter more here than on standard service calls.

• Upfront Pricing on Renovation Scope: Costs can jump once walls get opened, so work with a company that gives you a written estimate and explains how scope changes get priced before any extra work starts.

List of Top-Rated Plumbers in Toronto for Kitchen and Bathroom Renovations

Based on the criteria above, here are five Toronto plumbers with strong renovation credentials:

1. Premier Plumbing

2. Drain King Plumbers

3. Brothers Plumbing

4. The Great Plumbing Co.

5. Dr. Pipe Drain and Plumbing

Top-Rated Plumbers in Toronto for Kitchen and Bathroom Renovations

1. Premier Plumbing

• Founded: Based in east-end Toronto with 15+ years serving homeowners, businesses, and high-rise property managers across the GTA.

• Certification: All employees hold Red Seal Certification, which is Canada's federally endorsed national plumbing standard.

• Renovation Services: Faucet installation, fixture upgrades, water heater service, backflow preventer installation, sewer line repair, sump pump installation, and condo stack repair.

• Emergency: Available 24/7 across East York and the GTA with a typical 1 to 2 hour arrival window.

• Commitment: Satisfaction guaranteed, competitive upfront pricing, and fully licensed and insured for residential, commercial, and high-rise work.

Company Overview: Premier Plumbing operates out of east-end Toronto with 15+ years of GTA experience, and every technician on staff holds Red Seal Certification, Canada's top national trade credential. This company handles plumbing services in Toronto for residential, commercial, and condo or high-rise buildings, so they're just as comfortable roughing in a single-family bathroom as they are tackling a full suite renovation in a Toronto condo tower. Competitive upfront pricing, a satisfaction guarantee, and around-the-clock availability make them a practical pick for renovation projects running on strict deadlines.

Best For: Toronto homeowners and condo boards planning kitchen or bathroom renovations who need Red Seal-certified plumbers with experience across residential and high-rise plumbing systems.

Standout Feature: Every employee holds Red Seal Certification, guaranteeing expert-level installation and code-compliant rough-in work on every kitchen and bathroom renovation across Toronto and the GTA.

2. Drain King Plumbers

• Founded: Locally owned Toronto plumbing company with 15+ years of experience, licensed, bonded, and insured, serving residential and commercial properties throughout Toronto and the GTA.

• Renovation Services: Drain cleaning, pipe relining, camera inspection, backwater valve installation, sump pump service, waterproofing, fixture installation, and full residential and commercial plumbing installations.

• Code of Ethics: Every technician provides a written estimate with approval before starting, covers shoes on entry, and tests the completed system before leaving.

• Pricing: No extra charge for nights, weekends, or holidays, written estimate required before work begins, and they will attempt to beat any competitor's quote.

• Warranty: Best-in-industry warranties per company policy on all completed plumbing and renovation work.

Company Overview: Drain King Plumbers is a locally owned Toronto company with 15+ years serving residential and commercial clients across the GTA. They back every job with a written Code of Ethics that sets clear expectations. On renovation projects, they handle drain relocation, pipe relining, fixture installation, backwater valve and sump pump work, and waterproofing. You get written estimates before any work starts, and there's no surcharge if you need them nights or weekends. All technicians test the system before they pack up and leave.

Best For: Toronto homeowners renovating kitchens or bathrooms who want a locally owned contractor with a written Code of Ethics, competitive pricing, and no after-hours surcharges for flexible renovation scheduling.

Standout Feature: A written Code of Ethics governing every renovation call, including written pre-approval estimates, shoe covers on entry, and system testing before departure, with a best-in-industry warranty pledge on all completed work.

3. Brothers Plumbing

• Founded: In business since 1969, over 55 years serving Toronto and the GTA, locally owned and operated, licensed, insured, and certified.

• Renovation Services: Kitchen and bathroom renovation plumbing, fixture installation and repair for every brand, water and sewer line upgrades, lead and galvanized pipe replacement, drain relining, and plumbing rough-in.

• Specialty: Handles renovation projects other contractors decline and specializes in older Toronto properties with legacy plumbing systems including lead and galvanized pipe replacement.

• Availability: Available 7 days a week with job-based pricing (not hourly), no charge-per-hour billing model, and a fully stocked fleet of service trucks.

• Scope: Acquires proper permits, performs building inspections, and coordinates with other on-site subcontractors during renovation projects.

Company Overview: Brothers Plumbing has been a licensed Toronto company since 1969, racking up over 55 years of continuous GTA service. They focus on renovation plumbing for older Toronto homes where legacy systems like lead pipe, galvanized steel, and clay drains need replacing as part of a kitchen or bathroom upgrade. They acquire permits, coordinate with other renovation trades, and take on projects many contractors won't touch. With 7-day availability, job-based (not hourly) pricing, and a fully stocked fleet, they're built for active renovation sites.

Best For: Toronto homeowners renovating kitchens or bathrooms in older properties with legacy plumbing systems who need a 55-year-established contractor that acquires permits and coordinates with other trades.

Standout Feature: Over 55 years of Toronto renovation plumbing experience, including permit acquisition, trade coordination, and specialty work on older properties with lead pipe, galvanized steel, and clay drain systems that most contractors decline.

4. The Great Plumbing Co.

• Founded: Founded in 1989 by master plumber Jeff Wright with nearly 40 years of residential and commercial plumbing experience across Toronto and the GTA.

• Pricing: Flat-fee job-based pricing where customers pay by the job, not by the hour, with an upfront quote before work begins and no overtime surcharges.

• Renovation Services: Kitchen and bathroom plumbing, fixture installation, water line repair and installation, drain cleaning, sewer line repair, toilet installation, rough-in plumbing, and bathroom renovation and repair.

• Emergency: 24/7 live phone answer with fully stocked trucks dispatched immediately, 100% satisfaction guarantee, and all technicians background-checked.

• History: Expanded into CCTV sewer inspection for the City of Toronto in 1999 and holds a Trustindex Verified Badge with a review score above 4.5.

Company Overview: The Great Plumbing Co. was founded in 1989 by master plumber Jeff Wright and has built nearly 40 years of residential and commercial renovation plumbing experience across Toronto and the GTA. The company charges flat-fee job-based pricing, so the quoted price before work starts is the final price no matter how long it takes. There's no hourly escalation that can make renovation plumbing costs unpredictable. Background-checked technicians, a 100% satisfaction guarantee, and a live 24/7 phone line support active renovation timelines that need reliable scheduling.

Best For: Toronto homeowners planning kitchen or bathroom renovations who want a master-plumber-founded, nearly 40-year-established contractor with flat-fee pricing and a 100% satisfaction guarantee.

Standout Feature: Flat-fee job-based pricing that never escalates hourly, giving Toronto renovators a reliable, fixed plumbing cost before work begins regardless of how long the job takes.

5. Dr. Pipe Drain and Plumbing

• Founded: Founded in 2006 with 30+ years of combined experience, master plumber licence, fire prevention certification, and P.Eng. (Professional Engineers of Ontario) membership, family-run business.

• Pricing: No overtime rate, charges the same flat rate at any hour, 365 days a year, and beats any written competitor estimate by 10%.

• Warranty: 1-year warranty on plumbing repair, 5-year warranty on rough-ins, 10-year warranty on waterproofing, and 20-year warranty on underground drain jobs.

• Renovation Services: Kitchen and bathroom plumbing, rough-in work, condo plumbing, fixture installation, drain cleaning and camera inspection, backwater valve installation, sump pump installation, waterproofing, trenchless drain repair, and cast iron pipe repair.

• Guarantee: 100% upfront estimates with no hidden costs, beats any written competitor quote by 10%, and complimentary estimate on all renovation projects.

Company Overview: Dr. Pipe Drain and Plumbing was founded in 2006 and brings 30+ years of combined experience to Toronto and GTA renovation plumbing as a family-run business holding a master plumber licence, fire prevention certification, and Professional Engineers of Ontario (P.Eng.) membership. For renovation projects, they cover full rough-in work, fixture installation, waterproofing, drain relocation, and condo plumbing. They back it all with a tiered warranty structure (1 year on repairs, 5 years on rough-ins, 10 years on waterproofing) and a flat rate that never changes no matter the hour or day.

Best For: Toronto homeowners planning kitchen or bathroom renovations who want a P.Eng.-credentialed plumber with a 5-year rough-in warranty, no overtime pricing, and a 10% price-beat guarantee.

Standout Feature: A 5-year warranty on all rough-in work, the most renovation-relevant warranty in this guide, combined with P.Eng. credentials, no overtime pricing at any hour, and a written 10% price-beat guarantee on comparable quotes.

Factors to Consider When Choosing a Plumber for Kitchen and Bathroom Renovations in Toronto

Permit Acquisition Is the Plumber's Responsibility

In Toronto, plumbing work on renovations usually requires a permit. Confirm that the plumber you hire handles permit acquisition as part of the scope. Unpermitted rough-in work can fail a home inspection at resale, require walls to be reopened for re-inspection, or create liability issues if a water damage claim arises later.

Rough-In Timing Can Stall Your Entire Renovation

The plumber's rough-in must be completed and inspected before tiling, drywalling, or cabinet installation can proceed. Confirm the company's availability lines up with your renovation schedule. Ask them how they handle multi-trade coordination, since a plumbing delay is one of the most common causes of renovation timeline overruns in Toronto.

Flat-Fee vs. Hourly Pricing Matters More During Renovations

Renovation plumbing is less predictable than repair work. Unexpected pipe configurations, hidden corrosion in older Toronto homes, and scope changes can quickly inflate an hourly-rate invoice. Choosing a company with flat-fee job-based pricing gives you a fixed plumbing cost from the start, eliminating one of the most common renovation budget blowouts.

Warranty on Rough-In Work Is Different from Repair Warranty

Not all plumbing warranties cover rough-in installations the same way they cover repairs. Some companies offer stronger warranties on underground or new installation work than on service calls. Confirm the specific warranty applicable to rough-in work and new fixture installations as a separate term from the general repair warranty before signing a contract.

Experience with Toronto's Older Housing Stock Matters

Many Toronto renovation projects involve homes built between 1900 and 1960, where cast iron drains, galvanized supply lines, and lead piping are still present beneath floors and behind walls. A plumber without specific experience replacing these legacy systems in an active renovation may discover problems they are not equipped to resolve on-site, stalling the project.

Final Thoughts

Before hiring a plumber for your Toronto kitchen or bathroom renovation, get three things in writing: confirmation that permit acquisition is included, the rough-in warranty terms, and the pricing model (flat-fee or hourly). These three details determine the most common sources of renovation budget overruns and project delays.

Ask whether the company has completed renovation projects in homes of similar age to yours. A contractor experienced with modern plumbing systems may struggle with the cast iron, galvanized, and clay configurations common in Toronto's pre-1970 housing stock.

Schedule the plumbing consultation before finalizing your renovation layout. Drain locations, supply line positions, and stack configurations sometimes limit what is possible without expensive rerouting. Knowing this before the design is finalized saves you money and stress.