How Much Does Basement Flood Cleanup Cost in Toronto in 2026?

Yes, to within the range the table below publishes. Enter the size of what you are dealing with and these work it out against the same source-cited rates, so the number you get is the published market applied to your job rather than a national average.

• Flooded basement cleanup cost

This range rests on 5 independent published sources, across 13 price rows. Where two of them disagree, each row carries the figure of the source it names rather than a band stretched across both, and a figure that was not in its named source was removed.

Read the note under each figure before you compare it with a quote. All 13 rows below carry the caveat their own source attached to the number: what the price does and does not cover, where it is a floor rather than a band, and who has to already be on site for it to hold. That caveat is the usual reason two honest basement flood cleanup bids differ.

Scope, contamination and access, in that order. Below is what moves basement flood cleanup pricing most in Toronto, each one drawn from a source named in the table above, so you can read a quote and see where the money goes.

• Water category: Category 1 (clean supply-line water) is cheapest; Category 2 grey water adds disinfection; Category 3 sewage/river water adds full PPE, disposal of all porous materials and 40-60% higher cost.
• Water depth and spread: every extra inch extends extraction, drying time and the tear-out line (flooring only vs drywall vs electrical/HVAC).
• Basement size and finish level: finished basements with drywall, carpet, and furniture cost several times more than unfinished concrete storage space.
• Response time: mold can begin growing within 24-72 hours; waiting past 72 hours typically adds $1,500-$6,000+ of mold remediation to the bill.
• Drying duration: industrial air movers and dehumidifiers are billed per equipment-day, and Desa Contracting prices the whole drying phase at $800 to $4,000
• Timing of the call: after-hours, overnight, and holiday emergency response adds $150-$500+ in surcharges (up to $1,000 on holidays per DeSa Contracting).
• Contents volume: pack-out, cleaning, and disposal of belongings is often quoted separately from structural cleanup.
• Insurance vs cash: insurer-billed scopes follow standardized pricing; cash customers can negotiate but carry the full reconstruction risk.
• Reconstruction scope: rebuild (drywall $300-$1,200, laminate $800-$2,500, hardwood $2,000-$8,000) frequently exceeds the cleanup cost itself.

Three things: 13% HST on every quote, a City of Toronto rebate on prevention work, and no provincial licence for this trade at all. National price guides miss all three.

• Standard Ontario home insurance does NOT cover basement flooding by default. Sewer backup coverage (water backing up through drains/sump) and overland water coverage (surface water from rain/snowmelt entering the home) are separate optional endorsements: you need the right one for how the water got in.
• Endorsement pricing: sewer backup riders typically run $20-$250 per year in Ontario (McDougall Insurance/isure); overland water coverage runs roughly $10-$30 per month in lower-risk areas (isure), and homes in high-risk flood zones may pay much more or not qualify at all.
• Insurers commonly discount premiums or require mitigation for homes with a backwater valve and battery-backed sump pump: keep installation invoices and City subsidy paperwork as proof.
• City of Toronto Basement Flooding Protection Subsidy (official toronto.ca amounts for work completed on/after Nov 12, 2025; applications from May 1, 2026): up to 80% of invoiced cost per item: backwater valve max $1,600 per device (up to two devices), sump pump max $2,250 (one device), sump battery backup max $300, pipe severance and capping max $400, home plumbing assessment max $500; program total up to $6,650 per property; apply within two years of the work.
• A City plumbing permit is required for backwater valve installation, and subsidy-eligible work must be done by a licensed contractor; the subsidy maximums include labour, materials, permit and taxes.
• HST: restoration and plumbing quotes in Ontario are usually given before 13% HST: add it when comparing quotes to insurance scopes, which are typically HST-inclusive.
• Health Canada's residential indoor air quality guidance treats all mould as a health hazard regardless of species: there is no 'safe' level; Health Canada/CMHC guidance says small patches (under about 1 square metre) can be cleaned DIY with precautions, while larger post-flood growth warrants professional remediation.
• Ontario has NO licensing requirement for mold remediation or water damage restoration: anyone can call themselves a restoration company. Look for voluntary IICRC certification (WRT: Water Damage Restoration Technician, ASD: Applied Structural Drying, AMRT: Applied Microbial Remediation) and insurer-approved vendor status as the practical quality signals.
• After a widespread storm, register your claim with your insurer immediately: restoration capacity in the GTA runs out fast (the July 2024 storm generated ~$940M in insured losses per the Insurance Bureau of Canada) and insurers dispatch in claim order.

Act inside the first 24 to 48 hours, get more than one quote, and claim every rebate you qualify for. Those three do more than anything else on this list. Each lever below is tied to a real number in the table above.

• Claim the City of Toronto subsidy for prevention: up to $6,650 per property (backwater valve $1,600 each, sump pump $2,250, battery backup $300): a subsidized backwater valve is far cheaper than one $10,000 sewage cleanup.
• Call your insurer before signing anything: if you carry sewer backup or overland water endorsements, the insurer assigns or approves the restoration firm and you pay only your deductible.
• Act within 24-48 hours: fast extraction and drying keeps a $2,500 job from becoming a $8,000+ job with mold remediation added.
• For clean water under about an inch, extracting and drying it yourself is worth pricing against a professional job: Desa Contracting prices professional drying at $800 to $4,000 and extraction at $500 to $3,000. Never DIY sewage or storm water.
• Get 2-3 quotes for the rebuild phase: cleanup is urgent, reconstruction is not; separating them lets you bid out drywall and flooring competitively.
• Haul ruined contents away yourself or with an independent junk hauler rather than paying the restoration firm disposal line item. This page no longer quotes a truckload price: the hauler it used to cite publishes none.
• Photograph and video everything before disposal and keep receipts: thorough documentation prevents claim disputes on contents value.
• Ask about the pipe severance/capping subsidy ($400) and downspout disconnection: cheap changes that reduce recurrence risk and can earn insurance premium discounts.

By opening every source and finding the sentence that carries the figure. Every row on this page records the source it came from, the literal sentence in that source, and where that sentence sits in a cached copy of the page; a build gate reopens the cache and re-finds it. A figure whose source could not be read was removed rather than republished, and no number was adjusted to make an attribution true.

• Every figure in the table above was re-checked in August 2026 against the cached text of the page it is attributed to, and each row records the source sentence it came from. Where a range was not in its named source it was replaced by that source own published figure, or the row was removed. No number was moved to make an attribution true.
• The sewage row used to read $4,000 to $30,000+, a band these notes admitted had been combined from two firms. Desa Contracting, the source named on the row, publishes $5,000 to $30,000+. Ultimate Mold Crew publishes $4,000 to $15,000+ for the same work. The disagreement is real and is stated here rather than averaged into the row.
• Four rows were deleted. Three sump-pump rows (replacement, new install with pit, battery backup) all rested on Premier Plumbing, whose pages now answer every non-browser request with a SiteGround captcha wall, so none of the figures can be checked. A contents-disposal row cited Junk Professionals, whose pricing page carries no truckload price at all. One replacement row was added: Wright Restorations publishes $800 to $1,500 for a sump pump replacement, and that is now the only sump-pump figure on the page.
• The subsidy row is a ceiling, not a payment. The City pays 80% of invoiced cost with a separate cap on each item, so no property is paid $6,650 for one device. The per-item caps are in the row condition.
• A US source that had been used for the depth and size framework (Advanced DRI) states on its own page that its data reflects 2026 pricing in the Northeast US. It carries no figure on this page now, converted or otherwise.
• Flood Services Canada, a Toronto firm, prices flood cleanup by water category: $4.00 to $10.00 per square foot for clean water, $6.00 to $8.00 for grey water, and $8.00 to $10.00 for black water.
• Insurance-claim averages sit far above cash cleanup prices because they include full reconstruction and contents. Treat published contractor ranges as market anchors for a cash job, not as claim values.
• Most large GTA restoration firms publish no flat prices at all and bill insurers directly, so the ranges above come from mid-size firms that publish a pricing page.
• Add 13% HST: Ontario restoration and plumbing quotes are usually given before tax.

Sources

• Desa Contracting: How Much Does Water Damage Cost in Toronto?
• Restoration Mate: How Much Does Water Damage Repair Cost in Toronto?
• Ultimate Mold Crew: Water Damage Repair Toronto
• Wright Restorations: Mold Removal Cost Toronto 2026
• Flood Services Canada: Water Damage Restoration, How Much Does It Cost?
• City of Toronto: Basement Flooding Protection Subsidy Program
• WaterGuard Plumbing: Toronto Sump Pump & Backwater Valve Rebate 2026
• isure Insurance: Overland Water Coverage
• McDougall Insurance: Ontario Basement Flood Insurance, What's Covered
• Ratehub: Flood Insurance 101
• Canada's Restoration Services: Water Damage Restoration Toronto GTA

RestorationIndex tracks 37 basement flood cleanup companies across the Greater Toronto Area, rated 4.85★ on average. The three below rank highest on our published score, based on RestorationIndex's analysis of 37 GTA businesses, July 2026.

• 

  1·4.8·85/100

  Canada's Restoration Services

  24H · Willowdale · 102 reviews

  • Water Damage Restoration
  • Mold Removal
  • +1 more
  • Says it is insured
  • Says it carries WSIB coverage

  Request a quote
• 

  2·5.0·78/100

  Restoration Professionals

  24H · Don Mills · 31 reviews

  • Water Damage Restoration
  • Mold Removal
  • +1 more
  • Says it is licensed
  • Says it is insured

  Request a quote
• 

  3·4.8·77/100

  CPR24 Restoration

  24H · Willowdale · 79 reviews

  • Water Damage Restoration
  • Mold Removal
  • +1 more
  • Says it is licensed
  • Says it is with the IICRC

  Request a quote

These are the 6 words the quotes above are written in, defined from what this page's own sources say about them. Knowing them is most of the difference between comparing two bids and guessing between them, and each one has its own link so a definition can be pointed at on its own.

Backwater valve

A one-way flap installed in the drain that closes when the city sewer tries to push water back toward the house. The City of Toronto subsidises it, at 80 per cent of the invoiced cost up to $1,600 per device for a maximum of two devices.

Sump pit

The lined hole in the basement floor that groundwater collects in before a pump lifts it out. Replacing a pump in an existing pit is a different job from digging a new pit, and the City subsidises a sump pump installation at 80 per cent of the invoice up to $2,250.

Basement Flooding Protection Subsidy

The City of Toronto rebate for flood prevention work, never for cleanup. It pays 80 per cent of the invoiced cost with a separate cap on each item, up to $6,650 per property, and it applies to City of Toronto addresses only.

Overland water coverage

The optional Ontario endorsement for surface water from rain or snowmelt entering the house at grade. It is a different rider from sewer backup coverage, and which of the two pays depends on how the water got in rather than where it ended up. Neither is part of a standard policy.

Tear-out line

How far up the wall the demolition goes: the flooring, drywall and insulation that took the water and now come out before anything is dried or rebuilt. Where that line is drawn decides how much of the rebuild follows it, which is why an extra inch of standing water is not a small difference.

Insurer-approved vendor

A restoration firm an insurer keeps on its own list and dispatches to claims. Where the loss is covered the insurer usually assigns or approves the firm and the homeowner pays the deductible, which is why the first call after a flood is to the insurer rather than to a contractor.

A price only answers half the question. These are the other RestorationIndex guides that bear on the same decision, each with its own sourced table.

• Water Damage Restoration costs in TorontoWater damage cleanup runs $4 to $12 per square foot all-in; structural drying is $800 to $4,000 per job.
• Sewage Backup Cleanup costs in TorontoCategory 3 sewage cleanup runs $7 to $8 per square foot, from $2,500 minor to $50,000 for a severe incident.
• Mold Removal costs in TorontoStandard mold remediation runs $3.50 to $5 per square foot, up to $10 to $30 for full containment.
• Restoration company vs general contractorSide-by-side, with the same sourced numbers
• Choosing a basement flood crew in TorontoA note that uses these figures
• Picking your own contractor on a claimA note that uses these figures
• What has to be thrown out after sewageA note that uses these figures
• Flooded basement cleanup costWork the table above out against your own job