Leslieville's renovation culture is built on semi-detached and row houses, homes where every underpinning project shares a foundation wall with at least one neighbour. We've handled hundreds of shared-wall sequences along Queen East, Logan, and Carlaw. 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.
Leslieville 1920s east-end semis along Carlaw, Logan, and Greenwood typically have 6'-6'4" basements with original wood-floor framing. Modern HVAC ducting eats into the available height further.
Victorian brick foundations under century-old Leslieville rowhouses show decades of east-end settlement, with most cracks tracking the party-wall line between attached homes.
Original perimeter drains in the Greenwood-Carlaw clay area are past their life, and the Coxwell ravine watershed adds groundwater pressure during spring melt.
City of Toronto plan review for east-end addresses, plus Queen Street East commercial-residential zoning where applicable. Plan review typically 8-10 weeks.
Complete framing, rough-ins, drywall, flooring and trim to convert a raw basement into a legal apartment or luxury living suite. Available in Leslieville 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 Leslieville 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 Leslieville 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 Leslieville 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 Leslieville 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 Leslieville 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 Leslieville as part of our full-turnkey underpinning service.
Leslieville projects route through City of Toronto plan review with typical 8-10 week timelines. We sequence party-wall coordination with attached neighbours upfront, since most Carlaw and Logan rowhouses share foundation walls, and the building department wants the neighbour notification on file before excavation begins.
Engineered assessment at your Leslieville property. Fixed-price quote within two business hours.
Architect, structural engineer, Leslieville building permit submission. We handle every form and every hearing.
Pin-section excavation and pours in Leslieville. Daily site cleanup. Engineered inspections at every milestone.
City sign-off, engineer's stamp, warranty documentation, finishing handoff if bundled in Leslieville.
Free engineered assessment. Zero-risk, no-questions-asked warranty on every project.
Leslieville's lot widths (often 14-18 feet) demand the smallest excavation footprint in our crew toolkit. We use compact tracked excavators, stage spoil to the rear lane where one is available, and schedule deliveries off-peak to keep Queen and Logan moving. Crews check in with the Leslieville BIA when work fronts the Queen Street commercial strip.
Most Leslieville projects are 1900-1925 semi-detached or row houses on shared-wall foundations. Original ceiling heights of 5'8"-6'4" are routine; we lower these to 8'+ for legal apartments or family living space. Many homes have been re-renovated multiple times. We open up surprises during demo and budget contingency for them in the quote.
“Carlaw Avenue rowhouse. The shared-foundation sequencing with our attached neighbour worried us most, but TBU coordinated the timing so both sides cured properly. Five weeks start to finish, basement now a real living level.”
Kate D.
Carlaw Avenue, Leslieville
“Queen Street East semi above a former shop. Underpinning had to deal with an old commercial slab and clay tile drains. They re-routed the plumbing, lowered the slab, and waterproofed the perimeter in a single project.”
Marcus L.
Queen Street East, Leslieville
“1920s Leslieville home on Greenwood, finished basement after underpinning. The crew was meticulous about dust isolation upstairs, swept the site daily, and the engineered slab passed inspection on the first visit.”
Jessica O.
Greenwood Avenue, Leslieville
Free estimate within two business hours. Local crews, same-day estimate.
