Princess-Rosethorn's 1950s and 1960s custom bungalows on generous Etobicoke lots hold some of the best untapped square footage in Toronto — and Kopman Build has been unlocking it with permitted, code-compliant basement renovations since 1999. Whether you're finishing a family room, creating a legal secondary suite, or underpinning to gain full ceiling height, we deliver it properly.
Princess-Rosethorn is one of Etobicoke's most established enclaves — a quiet, tree-lined neighbourhood where the housing stock is defined by mid-century custom bungalows sitting on deep, generous lots. These homes were built to last, and the owners who renovate them expect the same standard from their contractors. Kopman Build has been working in premium Etobicoke neighbourhoods for over 25 years, and we understand what's at stake when you invest in this kind of property.
Basement work in Princess-Rosethorn tends to fall into three categories: finishing an underutilised lower level for family living, creating a legal secondary suite to generate rental income, and underpinning to solve the ceiling height limitations common to mid-century bungalow construction. All three require experienced project management, proper permitting, and trades who care about the details. That's what Kopman Build provides.
The large lots in this neighbourhood also support meaningful additions above and beyond the basement — many of our clients use a basement renovation as the starting point for a broader whole-home transformation. Dustin Kopman has led every project since founding the company in 1999, ensuring continuity of quality from consultation through handover.
Full secondary suite creation compliant with City of Toronto zoning, Ontario Building Code, and Second Suite requirements — including egress, fire separation, and dedicated mechanical.
Finished basement family rooms, home theatres, play areas, and entertainment spaces with proper insulation, sound isolation, and the finish quality this neighbourhood expects.
Dedicated basement home offices with appropriate lighting, egress compliance, and full electrical for modern work-from-home requirements.
New basement washrooms and ensuites, including rough-in plumbing, custom tiling, and premium fixture installation.
Basement underpinning and bench-pinning to solve the ceiling height constraints common in Princess-Rosethorn's 1950s–1960s bungalow foundations.
Interior and exterior waterproofing, sump pits, weeping tile, and drainage solutions before any finishing work begins.
We visit your Princess-Rosethorn 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, 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.
In Princess-Rosethorn, where the housing stock consists largely of 1950s–1960s custom bungalows, basement renovations typically run $70,000–$140,000 for a quality finish. Legal secondary suites in this Etobicoke enclave often reach $90,000–$160,000+ given the premium finishes expected in the neighbourhood. Ceiling height in these older bungalows can be a factor — underpinning adds $35,000–$90,000 depending on depth. We provide detailed, line-item estimates before any commitment.
Many 1950s–1960s bungalows in Princess-Rosethorn have basement ceiling heights of 6'–6' 6", which can feel low for a finished living space or secondary suite. Underpinning or bench-pinning to reach 8' or more is common in this neighbourhood and adds significant livable value. Kopman Build assesses your existing ceiling height, soil conditions, and foundation type during the consultation and advises whether underpinning makes sense for your project.
Yes. Princess-Rosethorn falls within Etobicoke, and properties there are subject to the City of Toronto's Second Suite bylaw. Legal suite requirements include minimum ceiling height (1.95m), egress windows in sleeping areas, fire-rated separation between units, dedicated heating, and a separate entrance. The generous lot sizes common in the neighbourhood often make a separate side or rear entrance straightforward. Kopman Build handles all permits and inspections for secondary suite work.
A standard basement finish in a Princess-Rosethorn bungalow takes 8–14 weeks from permit approval. If underpinning is required to raise the ceiling height, add 4–8 weeks before finishing work begins. A full legal secondary suite typically takes 12–18 weeks due to the additional mechanical, electrical, and inspection requirements. We schedule projects to minimise disruption and provide weekly progress updates throughout.
Kopman Build delivers permitted, code-compliant basement renovations in Princess-Rosethorn and across Etobicoke. No-obligation consultation.
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