Start with a contractor who has actually built accessible bathrooms, not just renovated pretty ones. Aging-in-place work is its own skill. A no-threshold shower, proper blocking behind walls for future grab bars, lever taps, and a layout that lets a walker or wheelchair turn around all take planning most general renovators skip. Ask to see past accessible projects and talk to those clients if you can.
Calgary's housing stock shapes the job. In older communities like Bridgeland, Killarney, or Inglewood, you're often dealing with small bathrooms, aging plumbing, and sometimes a slab or crawlspace that makes a curbless shower trickier to drain. Newer suburban homes in the far north and south usually give you more room to work with, but condo units downtown or in Beltline towers come with strata rules and shared plumbing stacks that can stretch timelines. Bring these up on the first visit so nothing surprises you later. And because Calgary winters are long and slick, a warm, slip-resistant floor and a curbless entry aren't luxuries; they're the whole point.
Insist on a written quote, a realistic timeline, and a clear warranty covering both labour and waterproofing. Confirm the contractor is licensed and carries liability and WCB coverage. In our experience, a licensed local firm with genuine accessibility experience beats a cheaper handyman quote almost every time. The waterproofing and structural work behind a curbless shower is where corners get cut, and you won't see the failure until water is already in the subfloor.
Our recommendation: hire a contractor who specializes in aging-in-place or accessible builds, even if their quote sits at the higher end. The trade-off is real. You'll likely pay more and wait longer for a specialist than for a generalist who's free next week. But this is one bathroom you want done once, done properly, and safe for years.