Sewer repair cost and quote FAQ

As a 2026 planning estimate, full replacement of a typical 15–25 m residential lateral usually quotes about $12,000 to $35,000 CAD for open-cut work and $9,000 to $30,000 for trenchless lining or bursting. Deep lines, hard surfaces and city-side work can push costs past $50,000.

A single open-excavation spot repair typically quotes about $3,500 to $9,000 CAD under lawn at moderate depth, and $7,000 to $16,000 deep or under concrete. A trenchless sectional liner usually quotes $2,500 to $6,500 per section.

A standalone residential scope with recorded video typically costs about $250 to $600 CAD in 2026. Added to a cleaning visit, it often adds $150 to $350.

Main-line augering through an accessible cleanout usually quotes about $200 to $450 CAD in business hours; hydro jetting about $450 to $1,100. After-hours work costs more.

A retrofit mainline backwater valve typically quotes about $1,800 to $4,500 CAD, and more in finished basements or with deep drains. Some municipalities offer partial subsidies; check with your city.

It depends on what is on top of the pipe. On open, shallow lawn, digging is often cheaper. Under driveways, pavers, trees or decks, trenchless is often cheaper once restoration is counted.

As a 2026 planning estimate, open-cut work typically implies about $180 to $300 CAD per foot for shallow runs under soft ground and $300 to $600 per foot for deep or hard-surface runs; lining and bursting about $150 to $400 per foot, with setup and pits on top.

Liners and HDPE pipe are commonly designed for service lives of around 50 years, but real life depends on cleaning, cure quality and installation. Compare the written warranty terms, not the design life in a brochure.

Some insurers sell service line coverage as an add-on that can pay to repair or replace buried service lines, including the sewer lateral, up to a limit. Standard policies and sewer backup endorsements generally do not pay for the pipe.

Mostly because they price different scopes: different start and end points, restoration standards, permits and assumptions about depth and soil. Match the scope before comparing totals.

Three for major repair or replacement, based on the same camera footage and written scope. One or two is usually enough for cleaning.

In most Canadian municipalities the owner pays from the house to the property line and the city is responsible beyond that, but some cities make owners responsible to the main. Confirm with your municipality.

Usually not. Sewer backup endorsements generally cover water damage inside the home, not repair of a worn or root-damaged pipe. Some insurers sell separate service line coverage.

Sewer backup covers water coming up through your drains from the sewer. Overland water covers surface water entering from outside. They are separate endorsements in most Canadian policies.

Repair or replacement of a building sewer usually requires a plumbing permit and inspection. Cleaning and camera inspections usually do not. Work in the road or boulevard needs a separate municipal permit.

Rarely. If the line is flowing after clearing, take a few days to get competing quotes based on the recorded footage. Same-day discounts are a pressure tactic.

A basis referencing the camera inspection, exact start and end points, method and pipe specification, itemised prices, exclusions with unit rates, restoration details, schedule, payment terms, warranty text and proof of insurance.

It can be, as long as you receive the recorded video. Free scopes are usually tied to repair sales, so get a second opinion before committing to major work.

Surface restoration, the city-side connection and permit fees are the three items most often excluded or left unstated.

Trenchless jobs are commonly one to two days on site; open-cut replacements two to five days plus restoration. Permits and locates can add one to three weeks before work starts.

Yes, but frozen ground makes excavation slower and costlier. If the line can be kept open by clearing, many homeowners schedule excavation for spring.

After-hours work typically costs about 1.5 to 2 times the daytime rate, or adds a call-out premium of roughly $150 to $400 CAD. Authorise clearing at night; get repair quotes in daylight.

It varies widely by contractor and method. Only the written warranty counts: check its length, what it covers, what it excludes and who stands behind it.

You can ask informed questions: what drove the price, whether a smaller repair would work, and what is excluded. Scope adjustments usually move price more than haggling.

The cost structure is similar — mobilisation, per-length work, depth, restoration — but local labour, permit and restoration costs differ, and figures here are in Canadian dollars.