The Annex sits on some of Toronto's oldest housing, pre-1920 Victorian and Edwardian homes with shallow rubble or fieldstone foundations. We've underpinned dozens of homes along Bedford, Madison, and Walmer. 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.
Annex Edwardian semis from 1890-1925 typically have 5'8"-6'2" basements, common along Howland, Madison, and Bedford. Finishing the space feels claustrophobic and a legal apartment is impossible.
Original stone foundations under century-old Annex homes show active settlement after decades of frost cycles. Cosmetic crack patches keep failing because the bearing problem continues.
1900-era weeping tile around Annex homes has collapsed entirely in many cases, with water damage now reaching original plaster basement walls every spring melt.
Heritage Conservation District compliance applies to most of the Annex, plus U of T-area zoning sensitivity. Permits take 8-12 weeks if heritage applies. We handle the coordination.
Complete framing, rough-ins, drywall, flooring and trim to convert a raw basement into a legal apartment or luxury living suite. Available in Annex 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 Annex 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 Annex 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 Annex 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 Annex 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 Annex 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 Annex as part of our full-turnkey underpinning service.
Underpinning in the Annex means coordinating both the City of Toronto building permit and the Heritage Conservation District compliance review. Plan review typically runs 8-12 weeks once heritage applies; we submit the heritage application alongside the building permit so the timelines run parallel rather than back-to-back.
Engineered assessment at your Annex property. Fixed-price quote within two business hours.
Architect, structural engineer, Annex building permit submission. We handle every form and every hearing.
Pin-section excavation and pours in Annex. Daily site cleanup. Engineered inspections at every milestone.
City sign-off, engineer's stamp, warranty documentation, finishing handoff if bundled in Annex.
Free engineered assessment. Zero-risk, no-questions-asked warranty on every project.
The Annex's narrow lots (often under 22 feet wide) and old-growth tree canopy demand careful excavation staging. We use compact excavators that fit through the side passages and stage spoil in the front yard within city street-permit windows. Spadina Road parking restrictions mean materials are scheduled for early-morning delivery; we co-ordinate with the local BIA and the Annex Residents' Association on noise windows.
Most Annex homes are 1890s-1915 brick semis with rubble or fieldstone foundations, 6'2" original ceiling height, and at-grade window wells. Shared walls between semis demand simultaneous structural sign-off from both engineers when neighbours are also planning underpinning. We coordinate the heritage permit when window-well changes face a public street.
“1912 Edwardian on Howland with a Heritage Conservation overlay. TBU's coordinator handled the heritage permit, the engineer's stamp, and the City of Toronto plan review. Underpinned to 8'2" and kept every original moulding upstairs intact.”
Helen B.
Howland Avenue, The Annex
“Bedford Road Annex semi with tight party walls on both sides. The crew's shared-wall sequencing was the part that sold us on TBU over the cheaper quotes. They walked our neighbour through the timing personally before we signed.”
Jonathan S.
Bedford Road, The Annex
“Madison Avenue 1925 Edwardian, full underpinning plus interior waterproofing. The basement had been chronically damp for decades. After the work it has been dry through three spring melts and we finally finished it as a proper home office.”
Eliza M.
Madison Avenue, The Annex
Free estimate within two business hours. Local crews, same-day estimate.
