Most tenants don’t find out they needed a change of use permit until after construction has begun.
By that point, the contractor has stopped work, the city is asking for drawings that don’t exist yet, and the opening date written into the lease is no longer realistic. It’s an expensive problem. It’s also a predictable one.
Quadrant Architects works with business owners and tenants taking over commercial units in Toronto and the GTA. We identify permit obligations, code triggers, and zoning issues before design begins – so the path from lease signing to opening day stays on track.
Licensed by the Ontario Association of Architects (OAA) with full professional liability insurance.
When a new tenant moves into a commercial unit, one question shapes everything else: is your business the same type as the previous tenant, or is it different?
If you’re a café taking over a space that was previously a café, your permit path is relatively straightforward – interior alteration, standard review. If you’re opening a medical clinic in a space that was previously a travel agency, the use has changed. That change triggers a permit review even if you’re not planning to touch a single wall. Toronto Building requires a permit when a building’s use changes, regardless of whether construction is proposed.
That distinction – same use or different – determines whether you’re looking at a routine fit-out or a change of use application with additional code requirements. We make that call at the start, before you’ve committed to a design.
Taking over a vacant retail or office unit and fitting it out for your operations. This covers new walls, service counters, treatment rooms, washrooms, lighting, and ceiling layouts – everything needed to make the space work for your business.
We’ve done this for a restaurant at Daymi in Toronto, a dog grooming studio at 16 Blue Jays Way in a downtown condominium building, and a cosmetic clinic for BB Cosmetic Clinic in Thornhill. Each project started from an existing shell and required drawings coordinated across architecture, mechanical, electrical, and plumbing
Permit drawings include: floor plans, reflected