Find a verified plumber contractor in London. Average cost: $100–$350.
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Last updated: April 2026
Plumbing services in London Ontario cost $95 to $155 per hour for licensed journeyman plumbers, approximately 15 to 20 percent below GTA rates. The city's housing stock ranges from pre-1960 heritage homes in Old North and Wortley Village to new construction in Masonville. Common projects include toilet replacement at $225 to $425 and full bathroom rough-in at $2,200 to $4,800.
Data: GetAHomePro market estimates (Q1 2026), regional market analysis.
General plumbing in London spans conditions ranging from pre-1960 heritage homes in Old North and Wortley Village to new construction in Masonville and Sunningdale. The Forest City's oldest neighbourhoods contain galvanized supply lines, cast-iron drain stacks, and two-piece fixtures from the mid-century era. A full re-pipe in a Wortley Village brick semi can be a multi-day project that uncovers surprises behind plaster walls.
Western University and Fanshawe College generate steady plumbing demand through the rental corridor along Richmond Street and Western Road. Property managers overseeing multi-unit student rentals cycle through fixture replacements, stack cleanouts, and water heater swaps continuously. London Health Sciences Centre and the insurance industry hub make the city economically stable, translating into sustained homeowner renovation investment.
The Thames River's presence shapes plumbing challenges in the east and south ends. Parts of Lambeth and east London sit on floodplain-adjacent soils that shift seasonally, stressing foundations and the drain lines passing through them. Byron and Westmount homeowners investing in bathroom renovations often discover original plumbing requiring full replacement before new tile installation can proceed.
Average prices in CAD based on 5 local contractors — estimated for this market.
| Service Type | Average Cost (CAD) | Typical Duration |
|---|---|---|
| Diagnostic / service call | $60–$100 | 30 min – 1 hour |
| Standard repair | $100–$225 | 1–3 hours |
| Major repair or replacement | $225–$350 | 2–6 hours |
| Full system installation | $350–$630 | 1–3 days |
Prices for London, ON. Last updated 2026. Source: GetAHomePro market estimates.
Average price range in CAD for the London CMA area, 2026.
Most London homeowners pay
$100 – $350
Source: HomeGuide 2025. Prices reflect the London CMA metro area. Last updated 2026.
Sources: GetAHomePro market estimates, regional market analysis, Ontario College of Trades, TSSA (2026)
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2324 Hamilton Rd, London, ON N6M 1H6, Canada
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Read moreOntario requires licensing for plumbing contractors
License type: Licensed Plumber (306A/306B)
Licensed through Ontario College of Trades (now OCOT/SkilledTradesOntario). Apprenticeship (9,000 hours) + Certificate of Qualification exam.
Verify contractor licenseWhen hiring a plumbing contractor in London, licensing is your first line of protection. Ontario (ON) requires plumbing contractors to hold a valid state license before performing work. This means the contractor has met minimum training, experience, and insurance requirements set by the state. In the London area, always ask for the license number upfront — licensed pros carry liability insurance that covers property damage and injuries on the job, they must follow current building codes, and you have legal recourse through the Ontario licensing board if work is substandard.
Ask for the plumber’s license number and whether they hold a Journeyman or Master designation. Master plumbers can pull permits independently and supervise other plumbers, which means they have more experience and accountability.
Verify Ontario plumbing contractor licenses onlinePlumbing rates in London run 15 to 20 percent below GTA prices. Licensed journeyman plumbers charge $95 to $155 hourly. Toilet replacements cost $225 to $425 including labour, bathroom faucet installations $140 to $280. Full bathroom rough-in runs $2,200 to $4,800 depending on layout. Cast-iron stack replacement in Old North or Wortley Village homes typically costs $1,800 to $4,500. City of London Building Division permit fees range from $130 to $380 for residential plumbing projects.
Spring brings peak demand for hose bib replacements and sump pump inspections after the freeze-thaw cycle — book two to three weeks ahead in April and May. Summer is London's busiest renovation window with three to four week lead times for bathroom and kitchen plumbing projects. Fall offers the optimal window for non-emergency upgrades: pipe insulation, shutoff valve replacements, and water heater inspections before November freeze onset.
If your London home was built before 1980 and retains original galvanized steel supply lines, request a flow rate test during your next plumbing visit. Galvanized pipe corrodes internally — visible rust at faucet aerators and reduced pressure at upper-floor fixtures signal significant occlusion. Catching this before complete blockage avoids the cost of emergency re-piping during heating season.
London's approximately 185 licensed plumbing contractors serve 422,000 residents with a mix of large multi-trade firms and specialized residential plumbers. The homeowner demographic — Western University graduates and healthcare professionals — tends to research contractors carefully and leave detailed reviews, keeping pricing transparent and encouraging quality workmanship.
Typical demand patterns for plumber in London, ON
Peak demand months for plumber in London: January–March. Book during September–November for potential savings of 10–20%.
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With 422,324 residents, London is a mid-size market for plumber services.
There are approximately 5 licensed plumber professionals serving London’s 422,324 residents.
With a median home build year of 1975, many homes in London are 51+ years old, so copper pipes may be showing wear. For properties of this age, aging pipes and fixtures may need replacement.
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Cost estimates based on regional market analysis and industry benchmarks. Contractor ratings from Google Business Profile. Licensing information from Ontario state licensing board. Last updated: March 5, 2026.
77 Bessemer Rd, London, ON N6E 1P9, Canada
510 William St unit 3, London, ON N6B 3E6, Canada
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Plumbers should carry general liability insurance ($500,000 minimum), workers’ compensation, and a surety bond. Jobs involving gas lines or sewer laterals may require additional pollution liability coverage.
Unlicensed plumbing work can result in contaminated water supply, cross-connections that allow sewage backflow into drinking water, and improperly vented drain lines that release sewer gas into your home. Building inspectors can order unlicensed plumbing to be ripped out and redone at the homeowner’s expense.
Improperly soldered joints cause hidden leaks that destroy drywall and framing. Incorrect pipe sizing leads to low water pressure or sewage backups. DIY water heater installs without proper venting risk carbon monoxide poisoning. Polybutylene pipe repairs done incorrectly can burst without warning.
0.62% of London residents are homeowners, with a mix of rental and owner-occupied properties needing plumber services.
With 130 freezing days annually, London homeowners should prioritize winterization. Pipe insulation and frost-proof hose bibs are essential to prevent costly burst pipes.
Part of the London CMA metropolitan area, London benefits from competitive pricing among plumber providers.
London plumber costs are 1% above the Ontario state average. Prices are closely aligned with regional norms.
Sources: Statistics Canada (population, homeownership), Environment Canada (climate data), GetAHomePro contractor database (2026).
Schedule preventive plumbing inspections in spring. With 130+ freezing days in London, winterize pipes in late fall to prevent burst pipes and costly water damage.
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