Leaside's 1940s–1960s brick bungalows and two-storey homes are the foundation of one of Toronto's most active second-storey addition markets — and bungalow-to-two-storey conversions are the signature project Kopman Build delivers here. We have been doing this work since 1999, on the kinds of homes that line these streets.
Leaside is a tight-knit family neighbourhood where most owners choose to expand rather than leave. The housing stock — solid mid-century brick construction on generous lots — is well-suited to second-storey additions, but the work demands a contractor who understands how these homes were built: load paths that differ from modern framing, foundation conditions that must be assessed before design begins, and brick that needs to be sourced and matched with care.
Kopman Build brings over 25 years of Toronto residential construction experience to every Leaside project. We manage structural engineering, permit applications, City of Toronto approvals, and every trade on site — so you have one point of contact, from feasibility assessment through to the final occupancy permit.
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 — not just the sales pitch.
The defining project type in Leaside — converting a one-storey bungalow into a full two-storey home without moving off the street you love.
Single-storey and multi-storey rear additions that extend your main floor and integrate structurally with the existing brick shell.
Full bungalow-to-two-storey conversions: structural assessment, architectural design, permit management, and construction under one contract.
Smaller additions — sunrooms, mudrooms, and bump-outs — designed to read as original to the home's mid-century architecture.
Converting attached or detached garages into living space, a home office, or an income-generating rental unit.
Garden suites in rear yards under Toronto's expanded as-of-right zoning — a growing option for Leaside's generous lot sizes.
We visit your Leaside property, assess the existing structure, 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, and City of Toronto 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.
A full second-storey addition on a Leaside bungalow typically runs $350,000–$650,000+, depending on the size of the footprint, the extent of structural work to the existing first floor, and finish selections. The 1940s–1960s brick construction common throughout Leaside often requires reinforcing the existing foundation and walls before the upper floor can be framed. Kopman Build provides a detailed line-item estimate before any commitment is made.
Yes. All home additions in Leaside require building permits from the City of Toronto. Second-storey additions often also require a structural engineering review and, depending on setbacks or lot coverage, a Committee of Adjustment minor variance application. Kopman Build manages the full permit and approval process on your behalf.
From first consultation to occupancy, a bungalow-to-two-storey conversion in Leaside typically takes 14–20 months in total. Permit applications and City approvals account for roughly 4–8 months; construction itself runs 8–14 months depending on scope. We build a realistic schedule into every proposal so you know the full timeline from day one.
Matching 1940s–1960s Leaside brick exactly is difficult — the original manufacturers no longer produce many of those runs. Kopman Build works with masonry suppliers who specialise in reclaimed and period-compatible brick, and our team will review your options during design so the addition integrates architecturally with your existing home rather than reading as a bolt-on.
Kopman Build builds home additions across Leaside and Toronto. No-obligation consultation — we come to your property.
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