Plumbing and Drain Cost Guide for Big Jobs
Most small plumbing repairs cost a few hundred dollars, while the big jobs run into the thousands. Published guides put a sewer line replacement in the low to mid thousands for a short run, a whole-house repipe at several thousand to well past ten thousand, and a new water heater between about one and four thousand depending on the type.
Plumbing prices swing more than most trades because so much is hidden. The length and depth of a sewer line, the state of old pipe behind walls and the route for a new gas line are only known after someone has looked, which is why camera work and a site visit come before a firm number.
Use the ranges below to see whether a quote is in a sensible neighbourhood. They are not a price list, and city rules, labour rates and the condition of your building can push the total beyond them.
Typical price ranges
- Sewer line replacementUS$1,400 to US$6,700
A typical residential lateral of about 25 to 75 feet, mostly open-cut, with restoration kept modest.
- Trenchless sewer work (per foot)US$60 to US$250 per linear foot
Pipe bursting or lining, before access pits, permits and restoration.
- Whole-house repiping (PEX)US$2,250 to US$15,000
A typical house, supply lines only; copper commonly adds 20 to 25 percent.
- Tank water heater, installedUS$600 to US$2,500
A standard 40 to 50 gallon tank replaced in the same spot.
- Tankless water heater, installedUS$1,400 to US$4,150
A gas or electric unit, before large gas line or venting changes.
- Hydro-jetting, residentialUS$350 to US$600
A single visit on a typical home drain, with a camera inspection extra.
- Hydro-jetting, commercialUS$500 to US$3,000
Per treatment of a business drain line, depending on length and access.
- Sump pump with pit, installedUS$650 to US$2,100
A new pit and a submersible pump in a typical basement.
- Backwater valve, installed (Canada)C$1,500 to C$5,000
A standard valve on the main sewer line, before any city rebate.
Typical 2025-2026 ranges compiled from published cost guides, including Angi, HomeAdvisor, This Old House, HomeServe, Networx, ConsumerAffairs, Fixr, LawnStarter and Canadian guides from Green Building Canada, RenoQuotes and RenoHouse. Many sources are contractor-run, they disagree on scope, and local quotes vary with region, pipe condition and access, so treat these as broad starting points.
What drives the cost
- Access and depth
- A pipe under a lawn is cheaper to reach than one under a driveway, slab or finished room, and depth multiplies the digging.
- Pipe material and age
- Old cast iron, clay or galvanized pipe may be fragile and may need extra care or different fittings.
- Method
- Trenchless methods, open-cut digging and spot repairs carry different price levels and different restoration costs.
- Scope of restoration
- Patching drywall, concrete and landscaping can be a large share of a plumbing job.
- Permits and inspections
- Fees and the number of inspections depend on the municipality.
- Fuel and venting
- Moving to a tankless water heater or changing fuel type can mean gas line, vent and electrical work.
- Building type
- Commercial buildings add after-hours work, larger devices and more paperwork.
- Season and urgency
- Frozen ground, storm demand and emergency calls all raise prices.
Ways to keep the cost down
- Get a camera inspection before agreeing to a dig, so the scope is based on what the line really looks like
- Ask for options side by side, such as spot repair versus full replacement, and compare what each leaves unresolved
- Combine related jobs, such as a repipe and a water heater swap, so the plumber opens the walls once
- Check whether your city offers a rebate for backwater valves or sump pumps before work begins
- Book planned work outside the emergency season instead of waiting for a failure
Cost questions
How much does a sewer line replacement cost?
National guides put it in the low to mid thousands for a typical short residential line, and much more for long, deep or paved-over runs. A camera inspection and a written scope give you a number that fits your property.
Is repiping a house expensive?
It is one of the bigger plumbing jobs. Published ranges run from a few thousand dollars to well over ten thousand, depending on the size of the house, the pipe material and the access.
Why do plumbing quotes differ so much?
Quotes may cover different scopes: spot repair versus replacement, permits, restoration, venting and disposal. Compare line by line, not just the total.
Does insurance pay for plumbing work?
Policies often cover sudden and accidental water damage but not wear and tear or tree roots. Read your policy and speak to your insurer before authorizing work.
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