Etobicoke's housing stock varies wildly across the borough, older lakeshore homes in Mimico and New Toronto with high water tables, mid-century homes in Markland Wood, and substantial detached stock in The Kingsway. Toronto Basement Underpinning delivers basement underpinning, interior waterproofing, basement finishing, sump pump installation, concrete foundation repair, legal apartment conversions, walkout basements, and permit coordination - full scope, one licensed crew.
Neighbourhoods Served
The homeowners who contact Toronto Basement Underpinning are usually wrestling with one of these. We solve them properly - not with a quick fix that fails in two years.
Pre-war Mimico, New Toronto, and Long Branch semis sit at 6'-6'4" basements. 1950s detached homes in Markland Wood and Stonegate-Queensway run 6'8"-7'0". Both need underpinning for a finished or legal lower level.
Original Etobicoke semi foundations near the Humber River show water-induced settlement after decades. The riverside soil profile is unstable in pockets across Mimico and New Toronto.
Lake Ontario raises the water table along Mimico and Long Branch lakefront streets. Original drainage failed decades ago, and chronic spring seepage is the norm without proper waterproofing.
The Toronto Hydro / Alectra Utilities boundary runs through North Etobicoke. Disconnect and reconnect coordination depends on which utility serves your address. We confirm before quoting.
Complete framing, rough-ins, drywall, flooring and trim to convert a raw basement into a legal apartment or luxury living suite. Available in Etobicoke as part of our full-turnkey underpinning service.
Exterior stairwell and door opening cut into your foundation wall, engineered to code, permitted, and waterproofed. Creates a private entrance for a legal basement suite or direct backyard access. Available in Etobicoke as part of our full-turnkey underpinning service.
Crack injection, footing repair, and structural reinforcement for Toronto homes, with an honest call on when full underpinning is the right answer instead. Available in Etobicoke as part of our full-turnkey underpinning service.
End-to-end drawings plus permit coordination, architect, structural engineer, City of Toronto submission, and Committee of Adjustment if zoning relief is needed. Available in Etobicoke as part of our full-turnkey underpinning service.
Full interior waterproofing of foundation walls, weeping tile, sump pit, and dimpled membrane, to stop leaks at the source. Available in Etobicoke as part of our full-turnkey underpinning service.
Underground plumbing, main drain replacement, and rough-ins for new bathrooms, most efficient when combined with underpinning or basement finishing. Available in Etobicoke as part of our full-turnkey underpinning service.
Primary plus battery backup sump pump systems sized for Toronto's freeze-thaw water table, eligible for the City of Toronto Basement Flooding Subsidy. Available in Etobicoke as part of our full-turnkey underpinning service.
Etobicoke projects go through City of Toronto plan review, but utility coordination depends on whether your address sits inside the Toronto Hydro service zone or the Alectra Utilities zone, since the boundary runs through North Etobicoke. We confirm which utility serves your service drop before quoting so the disconnect-reconnect timeline is accurate.
Engineered assessment at your Etobicoke property. Fixed-price quote within two business hours.
Architect, structural engineer, Etobicoke building permit submission. We handle every form and every hearing.
Pin-section excavation and pours in Etobicoke. Daily site cleanup. Engineered inspections at every milestone.
City sign-off, engineer's stamp, warranty documentation, finishing handoff if bundled in Etobicoke.
Free engineered assessment. Zero-risk, no-questions-asked warranty on every project.
Etobicoke spans coastline-adjacent neighbourhoods (Mimico, New Toronto, Long Branch) with elevated water tables, through inland sections (Markland Wood, The Kingsway) with stable clay. Soil reports drive the staging plan more here than in any other Toronto borough. We coordinate permits through the Etobicoke Civic Centre district office; lot sizes generally allow rear-yard equipment staging.
Lakeshore Mimico/New Toronto homes are typically 1900s-1930s small lots with original stone foundations and elevated water tables - underpinning here always pairs with waterproofing. Markland Wood is 1950s-60s post-war detached on stable clay. The Kingsway is 1920s-1940s detached on substantial lots. Each requires a different staging and waterproofing detail; we sequence the engineering accordingly.
“Mimico waterfront semi, less than a block from Lake Ontario. The water table is brutal. TBU paired underpinning with weeping tile, dimpled membrane, and a battery-backup sump. Three lakeside springs later it is still dry.”
Stefan K.
Mimico, Etobicoke
“1950s New Toronto bungalow on a deep lot. Underpinned to 8 feet, finished the lower level as a legal in-law suite. The Etobicoke building department was straightforward to work with thanks to TBU's coordinator.”
Roberto P.
New Toronto, Etobicoke
“The Kingsway 1928 Tudor with a Heritage Conservation overlay. We were nervous about the heritage approval process. TBU's permit team carried the file through nine weeks. Underpinning finished on schedule, original leaded windows untouched.”
David T.
The Kingsway, Etobicoke
Free estimate within two business hours. Local crews, same-day estimate.
