How Much Does Weeping Tile Replacement Cost in Toronto in 2026?

WaterproofingIndex compiled this table from 7 named Canadian sources; where they disagreed, we widened the range rather than pick one.

Not every quote is the same job. These are the variables that move weeping tile and drainage work pricing most in Toronto, so you can read a quote and see where the money goes.

• Wall depth. This is the biggest single multiplier on an exterior job. OCM Excavation prices a 7 ft basement at $250 to $400 per linear foot and an 8 ft basement at $300 to $475, because every extra foot of depth means more soil moved, more shoring, and more disposal.
• Scope of the package. Replacing the drain pipe alone inside an open trench runs $90 to $140 per linear foot at OCM. Adding membrane, parging and proper backfill takes the same wall to $250 to $475.
• Machine access. A side yard too narrow for a mini excavator forces the crew to dig by hand, which OCM adds at $50 to $100 per linear foot on top of everything else. Semi detached and row houses in the old city are the usual victims.
• Obstructions on the dig line. Decks, air conditioning condensers and gas meters have to come off and go back afterwards, which OCM prices at $500 to $2,500 depending on what is in the way.
• Interior versus exterior route. Interior weeping tile runs $70 to $150 per linear foot at DryShield and a complete interior system runs $3,000 to $10,000 at AquaMaster. Exterior work starts at $200 per linear foot and a complete exterior system runs $10,000 to $20,000.
• Where the water goes at the end. A drain is only as good as its outlet. OCM lists a sump pit and pump installed for a storm connection at $2,500 to $4,500 as a separate line.
• Number of walls. Pricing is per linear foot, so a full perimeter wrap of all four walls lands at $25,000 to $55,000 on an average detached home at OCM, while a single failing wall is a fraction of that.
• Landscape restoration. Sod, interlock, gardens and irrigation lines all have to be reinstated after an exterior dig, and OCM flags this as real money on top of the drainage work itself.

Ontario rules and Toronto's climate change the math in ways national price guides miss. Here is what applies locally, from HST to permits to freeze-thaw.

• HST applies at 13% on drainage and waterproofing contracts in Ontario. Almost every published per linear foot figure, including all of the ones above, excludes it. A $25,000 perimeter job is closer to $28,000 out the door.
• Downspout disconnection is not optional in Toronto. The City's own page states that it is mandatory for all property owners in Toronto to ensure their downspouts are disconnected from the City's sewer system. This matters for drainage work because a disconnected downspout dumps roof water beside the foundation unless it is routed away properly.
• Toronto runs a Mandatory Downspout Disconnection Financial Assistance program that reimburses labour and materials up to a maximum of $500, but only for an eligible low income senior or low income person with a disability, with a combined household income of $50,000 or less. It is not a general homeowner rebate.
• If disconnecting is genuinely hazardous or not technically feasible, the City requires the owner to submit a Mandatory Downspout Disconnection Exemption Application including a property sketch. The City expects owners to first try relocating a downspout or correcting the slope and grading on the property.
• Tying a new drain into Toronto's storm sewer is not a landscaping job. OCM Excavation notes it requires a permit and a licensed plumber's stamp, which is part of why a sump pit and storm connection is quoted at $2,500 to $4,500 rather than as a small add on.
• Excess soil from an exterior dig is regulated. OCM Excavation cites Ontario Regulation 406/19, which requires soil characterization on most large jobs, so disposal on a full perimeter excavation is a real budget line and not an afterthought.
• Freeze and thaw is the reason old Toronto weeping tile fails. Clay tile and unwrapped stone silt up and collapse over decades, which is why so many pre war houses need drain replacement rather than repair.
• The City of Toronto also operates a Basement Flooding Protection Subsidy covering devices such as backwater valves and sump pumps. Check the City's current terms directly before assuming any part of a drainage quote is covered, because the eligible items are specific.

You can keep weeping tile and drainage work costs down without cutting the parts that matter. These are the levers GTA homeowners actually use, each tied to a real number above.

• Price only the wall that is actually failing. Exterior work is sold per linear foot, so doing one leaking wall instead of a full four wall wrap is the single biggest lever available. OCM's full perimeter figure is $25,000 to $55,000; one wall is a fraction of it.
• Ask explicitly whether the quote is weeping tile only or a full exterior package. OCM lists drain replacement inside an open trench at $90 to $140 per linear foot against $250 to $475 for the full membrane and parging scope. If your foundation wall itself is sound, you may not need the larger package.
• Get the interior route priced as well as the exterior one. DryShield's interior drainage figure of $70 to $150 per linear foot and AquaMaster's $3,000 to $10,000 complete interior system are worth comparing before you commit to digging up a finished yard.
• Clear the dig line yourself where you safely can. OCM charges $500 to $2,500 to remove and reset decks, AC units and gas meters. Anything you can legally move in advance comes off that line, though gas and electrical work must stay with a licensed trade.
• Protect machine access. The hand dig surcharge is $50 to $100 per linear foot at OCM. If a fence panel or a gate post is the only thing stopping a mini excavator reaching the back wall, taking it out is far cheaper than paying that premium along the whole run.
• Confirm the outlet is included before you sign. A sump pit and pump for a storm connection is a separate $2,500 to $4,500 line at OCM, and a quote that leaves it out will look cheaper than one that includes it.
• Get three itemized quotes on the same scope and compare the line items, not the totals. Because the same wall can legitimately be quoted at $90 per linear foot or $475 per linear foot depending on scope, totals alone tell you almost nothing.
• Check the City of Toronto's current subsidy and downspout assistance terms before booking. The downspout assistance is capped at $500 and limited to eligible low income seniors and persons with disabilities, so confirm whether you qualify rather than assuming it will offset the quote.

Every price on this page comes from a named Canadian source, and where sources disagreed we widened the range rather than pick a favourite. Here is how WaterproofingIndex reconciled the numbers.

• Exterior weeping tile work is sold by the linear foot of wall, not by basement square footage. That is why two Toronto houses with identical basements can get quotes thousands of dollars apart: one owner is doing a single 30 foot wall, the other is wrapping the whole perimeter.
• Where a source publishes a range but names no single most common figure, the typical column here is the midpoint of that same source's own range, rounded. It is not an average blended across different companies, and it is not a quote.
• GTA sources disagree on the exterior range, and the disagreement is mostly about depth. AquaMaster Plumbing publishes one flat $200 to $450 per linear foot band for exterior weeping tile. OCM Excavation splits the same work by wall height, at $250 to $400 per linear foot for a 7 ft basement and $300 to $475 for an 8 ft basement. Both are 2026 Toronto figures and both are reproduced above rather than merged.
• The two whole home totals in this guide are not competing estimates of the same job. AquaMaster's $10,000 to $20,000 covers a complete exterior weeping tile system. OCM's $25,000 to $55,000 covers a full perimeter wrap of all four walls on an average detached home, which is a larger scope. Read the scope before comparing the number.
• Interior work is consistently the cheaper route on paper. DryShield puts an interior drainage system at $70 to $150 per linear foot against exterior figures that start at $200 or $250, because nothing outside gets excavated, nothing gets disposed of, and no landscaping has to be put back.
• The single most useful question to ask a contractor is whether the price is weeping tile only or a full exterior package. OCM lists weeping tile replacement on its own at $90 to $140 per linear foot when the trench is already open, against $250 to $475 per linear foot once membrane, parging and backfill are added.
• Aquatech Waterproofing's $20 to $30 per linear foot French drain figure is for a supplementary perimeter drain, not for a foundation drain dug to the footing. It sits an order of magnitude below the exterior weeping tile rows for that reason, and the two should never be compared directly.
• US cost guides surfaced repeatedly during research and were excluded. They quote USD against US labour and disposal costs and they understate real GTA excavation quotes. Every figure in this guide is CAD from a Canadian source page that was fetched and checked.

Sources

• AquaMaster Plumbing - Weeping Tile Installation Cost Toronto 2026, Full Cost Guide
• OCM Excavation - Basement Waterproofing Excavation Cost Toronto: 2026 Guide
• OCM Excavation - French Drain Installation Cost in Toronto & GTA: 2026 Guide
• DryShield - 2026 Basement Waterproofing Cost Guide, Toronto & GTA
• Aquatech Waterproofing - How Much Does Basement Waterproofing Cost? (2026)
• TroughDrain.ca - Trench Drain Cost in Toronto & the GTA, 2026 Guide
• City of Toronto - Mandatory Downspout Disconnection

WaterproofingIndex tracks 42 weeping tile and drainage contractors across the Greater Toronto Area, rated 4.89★ on average. The three below rank highest on our review-weighted score, based on WaterproofingIndex's analysis of 42 GTA businesses, August 2026.

• 1

  Crystal Plumbing Drain Services

  5.0(172 Google reviews)

  0.5 km from Yorkville centre

  YorkvilleWeeping Tile & Drainage

  Its own website describes below-grade water work

  (647) 951-2898Call
• 2

  Aquamaster Basement Waterproofing Hamilton

  5.0(145 Google reviews)

  No street address published

  Basement Waterproofing

  Its own website describes below-grade water work

  (289) 309-2454Call
• 3

  Aquamaster Basement Waterproofing Etobicoke

  5.0(142 Google reviews)

  3.3 km from Mimico centre

  MimicoBasement Waterproofing

  Its own website describes below-grade water work

  (416) 901-4562Call

The table above is the market. These calculators put your own basement into it, and they add the HST and any City of Toronto subsidy that applies.

• Price a drain by depth, length and where the water goes
• Fix the downspouts and grading first, for far less