Exterior Foundation Waterproofing
Digging down the outside of the foundation to the footing and putting a membrane or coating on the wall, with new drain tile at the bottom where it is replaced.
From $100 per linear foot of wall Depends on the wall length, depth, access and the locate response; ask for start and finish dates in writing
- Excavation to the footing on the affected wall
- Wall cleaned, cracks and holes sealed
- Dampproofing or waterproofing membrane, named in the quote
Learn More Interior Drainage & Sump Systems
A drain channel cut in along the inside of the basement floor that carries seepage to a sump pit and pump, without digging outside.
From $70 per linear foot Depends on the length of wall, what is finished over it and the permit and inspection; ask for dates in writing
- Perimeter drain cut in along the inside of the floor
- Sump pit at least 750 mm deep and 0.25 m², airtight child-resistant cover
- Discharge with union and check valve, above grade
Learn More Weeping Tile Replacement
Replacing the drain pipe at the base of the foundation that collects groundwater, laid to the Building Code's size and stone rules.
Quote only Quoted with the exterior or interior job it belongs to; ask for dates in writing
- Pipe at least 100 mm, top below the slab
- At least 150 mm of clean stone over the top and sides
- Where the drain goes: storm sewer, ditch, dry well or sump
Learn More Foundation Crack Injection
Sealing a leaking crack in a poured concrete foundation from the inside by injecting it, priced per crack.
From $500 per crack Ask for the date in writing, and how many cracks the price covers
- Injection from inside, no excavation
- Material named in the quote (epoxy or polyurethane)
- Price per crack, length stated
Learn More Sump Pumps & Battery Backup
New sump pits, pump replacement and battery backup pumps, with the City permit and the protective plumbing rebate in view.
From $500 to replace a pump in an existing pit Depends on whether a pit exists, the permit and the inspection; ask for dates in writing
- Pit at least 750 mm deep and 0.25 m², airtight child-resistant cover
- Discharge with union and check valve, above grade
- Battery backup pump option
Learn More Backwater Valves
A normally open valve on the sanitary or storm drain that closes when the sewer backs up, installed under a City permit as part of a flood plan.
From $1,500 per valve, interior retrofit Depends on the permit, the floor and the inspection; ask for dates in writing
- Normally open valve, one dwelling unit
- Building permit ($117 plumbing-only fee on the 2026 schedule)
- Licensed plumber for the plumbing work
Learn More Window Wells
New or replacement basement window wells, drained to the footing as the Building Code requires.
From $1,600 per well, with drainage Depends on the number of wells and the drainage work; ask for dates in writing
- Well drained to the footing level
- Well size and material stated in the quote
- Ground sloped away from the foundation (City advice)
Learn More Structural Foundation Repair
Repairs to a foundation wall or footing that carries load, which the City lists as building permit work.
Quote only Depends on the design, the permit and the inspection; ask for dates in writing
- Building permit for structural work
- Engineer named where the design needs one
- Scope and drawings in writing
Learn More