Secondary Suites & ADUs in Oshawa.
Basement, garden and laneway suites are the fastest way to turn a Oshawa property into an income property — designed, permitted and built by one accountable team.
Oshawa is built for this move.
Oshawa offers some of the strongest rent-to-cost math in the GTA — the same build simply pays back faster here.
For suites, that means one thing: the permission question is mostly settled. What decides your project is design, servicing and execution — and that’s exactly what we own.
Where we work in Oshawa
Also in Oshawa
Secondary Suites & ADUs, handled end-to-end.
One accountable team from first question to finished build — full service details →
Design & permits, handled
From layout to drawings to Oshawa’s permit desk — we run the process and keep it moving.
Legal & bankable
Built to code, ESA-inspected and properly registered — so the rent counts with lenders and your insurance stays valid.
Built to rent
Durable, tenant-ready finishes and separate access wherever the lot allows — a suite people want to live in.
Asked in Oshawa.
As honest ballparks: a basement conversion typically runs $90k–$145k all-in at standard size and finish, and a new garden suite roughly $215k–$280k. Your free report prices your actual project for your Oshawa lot.
Under Ontario’s Bill 23, up to three units are permitted as-of-right on most residential lots in Oshawa, and Durham’s growth corridors keep rental demand strong. Individual designs still need permits and can be shaped by lot specifics — which is what the free report checks.
Typically 2–4 months for design and permits, then 4–8 months of construction depending on the suite type. We set a realistic timeline for your project up front — and one team carries it to keys.
What could your Oshawa property become?
Enter your address and your Free Property Report™ shows what your lot allows, what it's worth once built, and how to finance it.
- What your lot can become
- Value now & once built
- Financing you qualify for