Kingsway's 1920s–1940s custom homes on generous ravine-adjacent lots are among Etobicoke's most prized — and most complex to extend properly. Kopman Build has built home additions across Etobicoke's premium enclaves since 1999, with the period-sensitive craft and permit knowledge these properties demand.
The Kingsway is one of Etobicoke's most prestigious addresses — an enclave of fully custom 1920s and 1930s homes set on deep lots that back onto the Humber River ravine system. Adding onto these properties is not a standard renovation task. It requires structural sensitivity, heritage-adjacent design judgement, and familiarity with City of Toronto and Toronto and Region Conservation Authority approval processes that apply near ravine edges.
Kopman Build brings that combination. Dustin Kopman founded the company in 1999 after growing up working in construction through his family's firm, G&G Enterprise. Every Kingsway addition we build is managed by someone who understands masonry detailing, period millwork, and the site-specific constraints that make Kingsway properties exceptional — not just the sales pitch.
Three things matter most on a Kingsway addition: architectural continuity with the existing home's period character; compliance with Etobicoke zoning and any ravine setback requirements; and the quality of finish that owners in this neighbourhood expect. We deliver all three.
Single-storey and multi-storey rear additions extending into generous Kingsway back yards, structurally integrated with existing masonry construction.
Full second-storey additions on Kingsway bungalows — doubling living space while preserving the period streetscape character the neighbourhood is known for.
Additions designed to read as deliberate and cohesive on Kingsway's heritage-adjacent custom homes — period masonry, roofline matching, custom millwork.
Projects on lots backing onto the Humber River ravine, managed with full TRCA permit compliance and environmental setback coordination.
Converting attached or detached garages into living space, home office, or studio — a natural fit on Kingsway's larger lot footprints.
Smaller additions — mudrooms, sunrooms, bump-outs — designed to integrate cleanly with Kingsway's established architectural vocabulary.
We visit your Kingsway 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 City of Toronto and TRCA permit applications, engineering consultants, and 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 Kingsway reflect the neighbourhood's premium custom-home stock and the care required to extend heritage-adjacent 1920s–1940s architecture sympathetically. A single-storey rear addition typically runs $250,000–$450,000+; a full second-storey addition runs $350,000–$650,000+. Kopman Build provides a detailed line-item pre-construction estimate before any commitment.
All home additions in Kingsway require City of Toronto building permits. Many lots in the Kingsway are subject to Etobicoke zoning bylaws and, where properties are heritage-adjacent or within a Heritage Conservation District study area, design review may apply. A Committee of Adjustment minor variance is common for additions that push against lot coverage or setback limits. Kopman Build manages the full permit and approval process.
Yes — this is one of the most important considerations on a Kingsway project. The neighbourhood's 1920s–1940s custom homes feature masonry details, steep rooflines, and custom millwork that deserve to be matched, not merely approximated. Kopman Build works with architects experienced in period-sensitive Etobicoke residential design to ensure additions read as deliberate and cohesive, not as afterthoughts.
Kingsway projects follow the same broad timeline as other Toronto additions, with permitting typically adding 4–8 months before construction begins. A rear addition runs 6–10 months on site; a second-storey addition runs 8–14 months. Ravine-adjacent lots may require additional Conservation Authority review, which we factor into the schedule from day one.
Kopman Build builds home additions across the Kingsway and Etobicoke. No-obligation consultation — we come to your property.
Request a Consultation