Start with the bathroom you actually have. Ottawa's older neighbourhoods, from the Glebe to Old Ottawa South, are full of century homes with narrow doorways, tight second-floor bathrooms, and original plumbing that a walk-in tub install has to work around. Suburban split-levels in places like Kanata, Barrhaven, and Orleans tend to give installers more room, while downtown and Centretown condos often have their own access rules and building approvals to sort out first. Ask any installer to measure in person before they promise anything.
When you compare companies for walk-in tub installation in Ottawa, put senior and accessibility experience ahead of a flashy showroom. You want someone who talks naturally about a low or zero-threshold step-in, a comfortable seat height, quick-drain time so your parent isn't sitting cold while the tub empties, and safety details like an anti-scald valve and built-in grab bars. Ottawa winters make water temperature control more than a nicety. Confirm the installer is licensed and insured, that plumbing work meets local code, and ask plainly about the warranty and how fast they respond if the door seal or drain acts up.
Our advice: hire a specialist installer over a general handyman or a big-box crew, even though the specialist usually costs more and may book a little further out. In our experience, walk-in tubs live or die on the watertight door and the drain, and those are exactly what a rushed generalist gets wrong. The trade-off is real. You'll likely wait longer and pay a bit more up front. But a leak behind a wall in an old Ottawa home is a far more expensive problem than the premium you paid to avoid it. Get at least two in-home quotes, and treat quick-drain time and after-sale service as deciding factors, not extras.