Leslieville's 1890s–1920s worker cottages and Victorian semis are the east side's most actively renovated housing stock — and their basements demand a contractor who understands century-old foundations, low ceiling heights, and Toronto's secondary suite requirements. Kopman Build has been delivering permitted, code-compliant basement renovations across Toronto since 1999, and we know what it takes to unlock the full potential of a Leslieville home.
Leslieville is one of Toronto's most rapidly gentrifying east-side neighbourhoods, and the gap between a well-renovated Victorian or cottage-style home and one left underdeveloped is significant in both livability and resale value. Basement work in this neighbourhood comes with specific challenges: pre-1920s foundations, rubble stone or brick footings, naturally low ceiling heights, and party-wall sensitivities on semis. Getting it right requires experience with century-old structures — not just a willingness to demo and rebuild.
Leslieville's active kitchen and bath market means buyers and tenants expect finished-quality interiors throughout. A properly executed basement renovation — legal suite, home office, or family room — makes a meaningful difference to how a property competes on the street. Kopman Build manages every basement project from permit application through final inspection, with open-book cost tracking and site supervision on every job.
Dustin Kopman founded the company in 1999 after growing up working in construction through his family's firm, G&G Enterprise. That hands-on background means every project is managed by someone who understands the craft at the structural level — not just the sales pitch.
Full secondary suite creation in Leslieville semis and detacheds, compliant with Toronto zoning, Ontario Building Code, and City of Toronto Second Suite requirements.
Basement underpinning and bench-pinning to increase ceiling height in Leslieville's pre-1920s worker cottages and Victorian homes — the most common prerequisite for livable space.
Finished basement family rooms, home theatres, and entertainment spaces with proper insulation, sound isolation, and egress compliance.
Dedicated basement home offices with appropriate lighting, electrical for modern work-from-home setups, and egress compliance for Leslieville's growing professional resident base.
New basement washrooms and ensuites, including rough-in plumbing, tiling, and fixture installation to match the quality of Leslieville's active renovation market.
Interior and exterior waterproofing, sump pits, weeping tile, and drainage solutions — critical in century-old Leslieville foundations before any finishing begins.
We visit your Leslieville property, assess the existing foundation and structure, listen to your goals, and document the project in writing — scope, budget, and timeline.
A detailed line-item estimate with allowances and contingencies, so you know the number before committing — including any underpinning or structural work required.
We manage all permit applications, engineering consultants, and approvals — including secondary suite zoning review and structural drawings for underpinning work.
Full-time site supervision, weekly updates, and open-book cost tracking throughout the project — with careful attention to party-wall and neighbour relations on Leslieville semis.
Structured handover with all documentation, warranties, and a 12-month attendance window post-completion.
Basement renovations in Leslieville's Victorian detacheds and semis typically run $65,000–$140,000 for a standard finish. The low ceiling heights common in pre-1920s cottages and worker homes often require underpinning, which adds $35,000–$85,000+ before finishing begins. Legal secondary suites run $85,000–$155,000+ including plumbing, fire separation, egress windows, and permit fees. We provide detailed line-item estimates before any commitment.
Many of Leslieville's 1890s–1920s worker cottages and Victorian homes were built with basement ceiling heights of 5–6 feet — too low for comfortable living or legal secondary suite compliance. Underpinning or bench-pinning can raise ceiling height to 8 feet or more. Kopman Build assesses your existing structure and foundation type before recommending the right approach, and manages engineering, permits, and all inspections for underpinning work.
Yes. The City of Toronto's Second Suite bylaw permits legal basement apartments in most residential properties, including Leslieville's abundant semi-detached stock. Requirements include minimum ceiling height (typically 1.95m), egress windows in sleeping areas, fire-rated separation between units, dedicated HVAC or heating, a separate entrance, and smoke and CO detectors. Kopman Build handles zoning review, permit applications, construction, and all required inspections.
A standard basement finish in a Leslieville home takes 8–14 weeks from permit approval. If underpinning is required — common in pre-1920s cottages — add 4–8 weeks before finishing can begin. Legal secondary suites typically take 12–18 weeks due to additional plumbing, fire separation work, and staged inspections. We give you a realistic schedule before construction starts and track it openly throughout the project.
Kopman Build delivers permitted, code-compliant basement renovations in Leslieville and across Toronto. No-obligation consultation.
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