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

This range rests on 3 independent named sources, across 11 priced lines. Every figure was re-read in August 2026 in the source that publishes it, and any figure whose source could no longer be read was removed rather than carried forward. Where two sources disagree, both rows are shown as their own sources published them; nothing is averaged and no range is widened to cover a gap.

Access, depth and scope move weeping tile and drainage work pricing more than anything else in Toronto. Each factor below is one reason two quotes for what sounds like the same job can be thousands of dollars apart.

• 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 adds 13% HST to every figure on this page, Toronto requires permits for most below-grade structural work, and both change what you actually pay. These are the local rules and subsidies that a national price guide leaves out.

• 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.

Bundling work into one excavation, reusing what is already there, and getting the sequence right are what actually cut a weeping tile and drainage work bill in the GTA. Each lever below is tied to a figure in the table 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 was re-read in the page that publishes it, and the sentence carrying it was recorded so the figure can be checked rather than trusted. Where two Canadian sources disagree, WaterproofingIndex shows both rather than averaging them into a number neither company quoted.

• 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.
• 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
• 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

  VHP Services Inc

  5.0(30 Google reviews)

  84/100 WaterproofingIndex Score

  4.2 km from Mississauga centre

  MississaugaWeeping Tile & Drainage

  • Says it is licensed
  • Says it is insured

  Its own website describes below-grade water work

  Request a quote
• 2

  Aquamaster Basement Waterproofing Oakville

  5.0(84 Google reviews)

  83/100 WaterproofingIndex Score

  4.0 km from Oakville centre

  OakvilleBasement Waterproofing

  • Says it is licensed
  • Says it is insured

  Its own website describes below-grade water work

  Request a quote
• 3

  MT Drains & Plumbing LTD

  4.9(155 Google reviews)

  82/100 WaterproofingIndex Score

  1.9 km from Richmond Hill centre

  Richmond HillWeeping Tile & Drainage

  • Says it is licensed
  • Says it is insured

  Its own website describes below-grade water work

  Request a quote

Every picture below was published by the company under it, on its own business listing, and WaterproofingIndex did not take any of them. Each of these companies describes below-grade water work on its own website, which is the same relevance check every profile on this site publishes. They are still not all the same kind of picture: some show a floor opened up mid-job, some show a truck or an office with the company's sign on it. None has been checked against a job in your area, and none is evidence of a price. They are here because a company that publishes its own excavation is showing you something a quote cannot.

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

These are the words that appear on a weeping tile and drainage work quote without being explained. Each one changes what you are buying.

weeping tile

The perforated drain pipe laid in stone alongside a foundation footing. It has nothing to do with tile: the name is from the clay pipe sections originally used. It collects groundwater before it reaches the wall and carries it to a storm connection or a sump pit.

sump pit

A lined basin cut into the basement floor at the low point of the drainage system. Water collected by the weeping tile runs into it and a sump pump ejects it away from the house.

backwater valve

A one-way valve fitted into the sanitary or storm lateral so that a surcharged city sewer cannot push sewage back up into the basement. It closes under reverse flow and opens again once the main clears.

parging

A thin cement coat applied to the exposed face of a foundation wall above grade. It is protective and cosmetic, not waterproofing, and it is priced by the square foot or by the side of the house.

encapsulation

Sealing a crawl space with a reinforced liner across the floor and up the walls, with the vents closed, so the space is inside the building envelope rather than open to ground moisture.

Most of the money on a weeping tile and drainage work quote is decided before any number is written down, by which of two methods the company is proposing. These side by side pages are built from the same price rows as the table above.

• Interior vs exterior waterproofingInterior vs Exterior Basement Waterproofing in Toronto: Cost and Scope
• Weeping tile vs interior drainageWeeping Tile Replacement vs Interior Drainage in Toronto

Below-grade jobs overlap, and the wrong guide gives you the wrong budget. These three are the ones most often quoted alongside weeping tile and drainage work.

• Basement Waterproofing costs in TorontoInterior drainage runs $50 to $180 per linear foot; exterior excavation and membrane runs $150 to $475.
• Sump Pumps & Backwater Valves costs in TorontoA sump pump in an existing pit runs $1,400 to $2,400; a mainline backwater valve runs $2,800 to $4,200.
• Crawl Space Waterproofing costs in TorontoCrawl space encapsulation runs $7 to $10 per square foot, or $4,000 to $8,000 for a basic system.