Basement Flooding Scarborough
Basement flooding Scarborough homes face tends to come from the combination of creek-fed sewers and older sump systems.
Fully licensed and insured
Open 24 hours, 7 days
What the City says about Highland Creek
High water levels in Highland Creek after heavy rain can slow storm sewers draining into it. Toronto has studied basement flooding in South Scarborough as part of its Basement Flooding Protection Program. Check the City map to see whether your street is in a study area.
If you have flooded before, the City subsidy for backwater valves and sump pumps on toronto.ca may be relevant.
Where we find water in Scarborough basements
- Under panelling nailed to furring strips
- Beneath laminate floors over concrete
- Behind drywall in basement apartments
- In window wells on bluff-side lots
- Around sump pits that have lost power
Basement apartments and the subsidy
The City of Toronto subsidy program for backwater valves and sump pumps is open to owners of single-family homes up to fourplexes, which suits many Scarborough properties. Read the City page for current limits and conditions before booking any plumber.
How a Scarborough basement is dried
Postwar basements often have concrete floors with panelling, carpet or a floating floor on top. Water trapped beneath a floating floor will not dry on its own, so we lift it. Panelling nailed to furring strips holds moisture against the block, so we open it to check. Readings tell us when each area reaches target.
Steps
- ExtractRemove standing water.
- RemoveStrip wet materials.
- DryDaily readings.
- RebuildRestore finishes.
What we remove
- Wet carpet and underpad
- Lower drywall
- Insulation in contact with water
- Laminate over wet slabs
The first hour in a flooded Scarborough basement
Do not walk into standing water until you know the power is off to that area, because outlets and baseboard heaters may sit below the water line. If the water is dark or smells of sewage, treat it as contaminated and keep children and pets upstairs. Move what you can to higher ground, photograph the water line on the wall, and note the time. Then call us. Pumping starts as soon as it is safe, because every hour of contact with water spreads damp further up drywall and into framing.
In a finished basement we expect to see wall panelling, drop ceilings, built-in cabinets and a bathroom rough-in. Each one hides a cavity where water collects, so we check them all rather than only the floor.
Signs the basement is still wet after the water is gone
- Baseboards swelling or pulling away from the wall
- A musty smell that returns when the room is closed up overnight
- Floor planks that cup or lift at the seams
- Cold spots on a wall in thermal images, even when the surface feels dry
- Rust on screws, nail heads or metal furniture legs near the floor
City of Toronto amounts for Scarborough flood protection
Scarborough owners, from Guildwood to Malvern, deal with the City of Toronto, and its flood protection program is open to them. Think of it as an 80 percent refund on eligible invoices for work done after 12 November 2025. Per item it stops at 500 dollars (plumbing assessment), 1,600 dollars (each backwater valve, two maximum), 2,250 dollars (sump pump and alarm), 300 dollars (battery backup) and 400 dollars (weeping tile capping), and at 6,650 dollars for the property as a whole. These are City program limits, not our prices; our assessment is free and a written scope and price come before any repair work.
The contractor must hold a valid City of Toronto business licence, and a licensed plumber must complete the assessment form. Apply within two years of the work.
Request a quote
Tell us what you need and we will get back to you. In a hurry? Calling is fastest.