High Park's 1910s–1940s homes — from Arts and Crafts bungalows to Edwardian semis — have the footprints and lot sizes that make second storey additions a logical way to double living space without leaving the neighbourhood. Kopman Build has been building second storey additions in Toronto since 1999, with the structural experience to work confidently on older housing stock.
High Park is one of Toronto's most desirable west-end neighbourhoods, and that proximity to the park drives real estate values that make renovation a compelling alternative to upsizing. A well-executed second storey addition can add 800–1,200 square feet to a bungalow, convert a two-bedroom home into a four-bedroom, and substantially increase assessed value — all without the transaction costs of buying and selling.
The varied architectural stock around High Park — ranging from pre-war brick bungalows to two-storey Edwardians — means no two second storey additions are identical. Structural conditions vary, existing roof geometries complicate the tie-in, and neighbourhood character guidelines influence what the City will approve. Kopman Build brings structural engineering, permit expertise, and design-build coordination to every project, so you are not assembling a team from scratch.
Dustin Kopman founded the company in 1999 after growing up in construction through his family's firm, G& G Enterprise. Every project is managed by someone who understands the craft at a technical level — not just the sales process.
Early structural engineering review of your existing foundation, walls, and floor system to determine load capacity and required reinforcement before design begins.
Complete second floor addition over the full footprint of the existing bungalow — typically 800–1,400 sq ft of new living space with bedrooms, bathrooms, and hallway.
Adding a second storey over part of the home — common when the existing structure can only support a partial load, or when budget or design goals call for a phased approach.
Full permit application management including building permit, site plan, and any Committee of Adjustment applications required for setback or height variances in High Park zoning.
Exterior design that respects the character of the existing home and neighbourhood — matching brick, window proportions, rooflines, and detailing to avoid a bolt-on appearance.
Complete interior finish of the new storey: framing, insulation, HVAC extension, electrical, plumbing rough-ins, drywall, millwork, flooring, and all finishes.
We visit your High Park property, review 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 to design or permits.
We manage all permit applications, structural engineering coordination, and City approvals — nothing falls through the cracks.
Full-time site supervision, weekly client updates, and open-book cost tracking throughout the project.
Structured handover with all documentation, warranties, and a 12-month attendance window post-completion.
A second storey addition on a High Park home typically runs $350,000–$650,000+ depending on the size of the existing footprint, the structural condition of the 1910s–1940s-era building, and the level of finish. Homes in this neighbourhood command premium finishes that match the character of the area. Kopman Build provides a detailed pre-construction estimate before any commitment.
Most High Park properties are not individually designated under the Ontario Heritage Act, but some streets and clusters carry heritage character overlays or are subject to neighbourhood character guidelines that influence design. The City of Toronto may require a heritage impact statement depending on proximity to a heritage property or conservation district. Kopman Build reviews your specific address as part of the initial consultation.
From initial design to project completion, expect 12–18 months total. Permitting in Toronto typically takes 4–8 months; construction on a second storey addition runs 6–10 months after permit approval. We give you a realistic phased schedule from the first meeting.
Often yes, but it depends on the foundation, wall framing, and floor system. Homes built between 1910 and 1940 vary considerably in structural quality. Kopman Build engages a structural engineer early in the process to assess load-bearing capacity, foundation adequacy, and any required reinforcement — so there are no surprises once construction begins.
Kopman Build builds second storey additions across Toronto and the GTA. No-obligation consultation — we come to your property.
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