Drain Line Replacement in Toronto
Updated August 18, 2026
City Rooter replaces failed drain and sewer lines from inspection through excavation or trenchless methods. Homeowners choose replacement when pipes are collapsed, offset, or repeatedly clogged. We provide a written estimate and leave the site clean.
- Collapsed or crushed drain pipe
- Bellied or offset sections on camera
- Cast-iron or clay pipe at end of life
Licensed & WSIB · Written estimates · 24/7 Mon–Sat · Sun 9 AM–5 PM
Drain line replacement in Toronto
Replacement is the right call when the pipe is collapsed, bellied, or so worn that another cleaning will not last. Clay and old cast-iron lines in older GTA neighbourhoods fail this way often.
We inspect the full run, mark the path, and quote sectional or full replacement — including permits when the city requires them. Trenchless methods are used when access and pipe condition allow. Open excavation is used when they do not.
This is a larger job than a snake or a two-foot spot repair. You should see the camera finding, the scope, and the price before anyone opens the ground. City Rooter does not start a replacement on a verbal maybe.
When replacement is safer than another repair
If the camera shows crushed pipe, a belly that holds waste, or offsets at every joint, patching one spot leaves the next failure in place. Homeowners who have paid for three cleanings in a year are usually looking at a worn line, not bad luck.
Cast iron that has scaled thin will keep cracking. Clay that has lost its joints will keep taking roots. A line with the wrong slope will keep holding solids no matter how well it is jetted.
- Collapsed or crushed drain pipe
- Repeated backups after professional cleaning
- Cast-iron or clay at the end of its service life
- Bellied or offset sections on the camera
- Sewage in the yard or a sinkhole over the path
- A renovation that will sit on top of a failing run
Trenchless and conventional replacement
Trenchless work can limit lawn and driveway damage when the existing line can be used as a path. The old pipe guides the new one. That only works if the line is still open enough to pull or burst through and the slope is acceptable.
If the pipe has already collapsed, or the camera shows a belly that must be regraded, we open the ground. We set new pipe on the correct slope, bed it properly, and add a cleanout so the next inspection is simple. Restoration is part of the job, not an afterthought you discover on the invoice.
Downtown lots, shared driveways, and finished basements change the access plan. We walk the property and tell you what will be opened before we book the crew.
What a replacement visit includes
We start with a camera of the full run when access allows. We locate utilities, mark the path, and confirm whether the work is private-side only. City-side sewer work is a separate conversation when it applies.
On the day of the work we isolate the line, replace the agreed section or the full run, test flow, and camera the new pipe when we can. You get a written scope. If we find extra damage that was hidden, we stop and price it before we continue.
What drain replacement costs
Price follows length, depth, material, surface restoration, and whether we can stay trenchless. A short sectional replacement in a soft lawn is not the same job as a full main under interlocking stone. We do not publish a single number that would be wrong for half the houses we see.
Compare that cost to repeat cleanings, a sewage cleanup, and a failed insurance conversation. Call (647) 534-6875 for a written estimate after the inspection. We will also tell you if a smaller repair is enough so you are not sold a full line you do not need.
After the new line is in
Keep a cleanout accessible. Do not bury it under a deck without a plan. Use the new line the way any drain should be used: no wipes, no grease poured down the kitchen sink, no roots ignored if trees sit over the path.
If you are replacing the drain as part of a bathroom or basement project, we can coordinate the new fixtures so the rough-in matches. See drain line installation when you are adding a bathroom rather than replacing a failed main.
Who we replace drains for
We replace mains for houses, small multi-unit buildings, and commercial suites across Toronto and the GTA. Shared driveways and tight downtown lots are normal for us. We will say if the line under the street is the city’s problem so you do not pay for a sewer you do not own.
Call (647) 534-6875 when the camera already shows a failed run, or when the same backup has come back after two professional cleanings. Bring the video if you have one. If you do not, we will shoot it before we quote a replacement.
Need drain replacement in Toronto?
Licensed, insured, WSIB-covered technicians. We answer live and typically reply to quotes in 5–10 minutes.
Our process
Step 1
Inspect
Camera the full line and mark the replacement path.
Step 2
Quote
Written scope for sectional or full replacement, including permits if required.
Step 3
Replace
Excavate or use trenchless methods, install new pipe, add a cleanout, and restore.
Reviews
Only 5-star reviews from GTA homeowners
★★★★★
Alex and his team replaced our main drain and broken pipes. He provided great service and workmanship, at reasonable prices. Highly recommend.
★★★★★
City Rooter installed a new waterline from the edge of the property into my basement. Alex worked with me to get the best solution possible, gave a very good price, and left everything neat and tidy.
★★★★★
They saved us from a major plumbing disaster. Tree roots clogged the drain. The team snaked the line, excavated, replaced the damaged pipe, and installed a cleanout. Professional, efficient, and fair.
Frequently asked questions
When should a drain line be replaced instead of repaired?
Replace the line when the camera shows collapsed pipe, a belly that holds waste, or offsets at most joints. Patching one spot on a worn clay or cast-iron run leaves the next failure in place. City Rooter quotes sectional or full replacement after we inspect the whole path.
Can you replace a drain without digging up the whole yard?
Sometimes. Trenchless methods work when the existing pipe can guide a new line and has not fully collapsed. If the pipe is crushed or the slope is wrong, we open the ground, set new pipe correctly, and restore the site. We tell you which method fits before we start.
How long does drain replacement take?
A short sectional replacement can be a one-day job. A full run under a driveway, walkway, or finished basement takes longer because of access, permits, and restoration. We give a written timeline with the estimate so you can plan around the work.
Need a plumber now?
Licensed, insured, WSIB-covered technicians. We answer live and typically reply to quotes in 5–10 minutes.