Start with the bathroom you actually have. Older Toronto homes in areas like The Beaches, Roncesvalles, or High Park often have narrow doorways, tight upstairs bathrooms, and original plumbing that may need updating before a walk-in tub goes in. Condos across the core and North York bring their own hurdles, since you'll likely need building approval and a plan for getting the old fixture out and the new one up. Ask any installer to measure in person and confirm the water heater can handle a deeper tub, because a slow fill or a lukewarm bath defeats the purpose.
When you compare installers, weigh accessibility experience over a flashy showroom. Someone who fits walk-in tubs for seniors in Toronto every week will know to spec a low or zero-threshold step-in, a comfortable seat height, quick-drain hardware so your parent isn't sitting in cooling water, and anti-scald valves with built-in grab bars. Confirm they're licensed and insured, ask what the warranty covers on both the tub and the labour, and find out how fast they respond if the door seal ever leaks. A leak in a second-floor bathroom of an older home is not something you want to wait on.
Here's our take: pay for the professional install and don't cut corners on plumbing and electrical, especially in a heritage home or a condo with strict rules. The cheaper route, buying a tub online and hiring a general handyman, tends to go sideways when the door seal, the drain slope, or the anti-scald valve isn't set up right, and warranty claims get murky when nobody's clearly responsible. The trade-off is honest: a full professional job costs more up front, and walk-in tubs in Toronto cost more than a simple grab-bar retrofit. But for a bathroom that gets used daily, we'd rather see it done once and done properly.