Leslieville's 1890s–1920s worker cottages and Victorian homes are ideal candidates for rear and second-storey additions — and as one of Toronto's fastest-gentrifying east-side neighbourhoods, investing in more space here makes strong financial sense. Kopman Build has been building home additions across Toronto since 1999, and we know exactly what these tight lots and century-old structures demand.
Leslieville's housing stock is defined by narrow lots, original century-old foundations, and homes that were built to a different standard than today's code requires. Adding square footage to these buildings — whether a rear addition off the kitchen or a full second storey — demands a contractor who understands what's behind the walls before the first permit drawing is filed.
Full gut renovations on Victorian detacheds and semis are the dominant project type in this neighbourhood, and active kitchen and bathroom markets mean Leslieville homeowners expect both high craft and high design. Kopman Build brings both, alongside the structural and permit expertise that projects on these lots require.
Dustin Kopman founded the company in 1999 after growing up working in construction through his family's firm, G&G Enterprise. Every project is managed by someone who understands the craft — not just the sales pitch.
Single-storey and multi-storey rear additions extending the living space of Leslieville cottages and Victorian semis, structurally integrated with the existing building.
Full second-storey additions on Leslieville bungalows and worker cottages — doubling living space without purchasing a new property at today's east-end prices.
Toronto laneway suites designed and built to City of Toronto guidelines — assessed on a lot-by-lot basis given Leslieville's varied laneway and lot configurations.
Garden suites in rear yards as permitted under Toronto's expanded as-of-right zoning, where Leslieville lot depths allow.
Rear bump-out additions purpose-built to expand Leslieville's typically compact Victorian kitchen footprints into open, functional living-kitchen spaces.
Smaller additions — mudrooms, sunrooms, bay extensions — designed to integrate cleanly with Leslieville's Victorian and Edwardian streetscapes.
We visit your Leslieville property, 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.
We manage all permit applications, engineering consultants, Committee of Adjustment hearings if required, and City approvals — nothing falls through the cracks.
Full-time site supervision, weekly updates, and open-book cost tracking throughout the project.
Structured handover with all documentation, warranties, and a 12-month attendance window post-completion.
Home addition costs in Leslieville depend on the scope and the condition of the existing structure. A single-storey rear addition on a Leslieville worker cottage or Victorian semi typically runs $220,000–$420,000+. A full second-storey addition runs $330,000–$620,000+. Many Leslieville homes also require structural remediation work discovered during pre-construction assessment. Kopman Build provides a detailed line-item estimate before any commitment.
Yes. All home additions in Leslieville require City of Toronto building permits. Many Leslieville lots are narrow and the homes sit close to rear lot lines, which commonly triggers a Committee of Adjustment minor variance application before permits can issue. Kopman Build manages the full process — permit drawings, engineering, and any variance hearings.
Yes — second-storey additions on Leslieville worker cottages and Victorian semis are one of our most common project types. The existing structure typically needs to be assessed for load capacity, and the foundation may require reinforcement. Kopman Build carries out a full pre-construction structural review so there are no surprises mid-project.
Permitting in Leslieville — including any Committee of Adjustment process — can take 6–12 months before a shovel goes in the ground. Construction on a rear addition then takes 5–10 months; a second-storey addition takes 8–14 months. We give you a realistic total timeline at the outset, not an optimistic one.
Kopman Build builds home additions across Leslieville and Toronto. No-obligation consultation — we come to your property.
Request a Consultation