Home › Guides › Renovation, GC & carpentry › Bathroom remodel guide: planning, waterproofing, cost and what to expect
GuideBathrooms are small but among the most complex rooms to remodel — they pack plumbing, electrical, tile, waterproofing and ventilation into a tight space, and water makes quality workmanship non-negotiable. A well-planned bathroom remodel adds real value and daily comfort. Here's how to plan it and what to expect.
Like kitchens, bathrooms range from a cosmetic refresh (new vanity, fixtures, paint, re-caulk) to a full gut that changes the layout and moves plumbing. A refresh is affordable and high-impact; a full remodel lets you fix layout and moisture issues but costs more. Moving the toilet, tub or shower relocates plumbing — the biggest cost driver — so keeping fixtures in place saves significantly.
The single most important part of a bathroom remodel is what you don't see: proper waterproofing behind the tile and around the shower and tub. Done wrong, water gets into the walls and subfloor and causes rot, mould and expensive damage that shows up years later. This is exactly why bathroom work should go to pros who do it right — cutting corners here is the costliest mistake.
Bathrooms generate huge amounts of moisture, so a properly sized, properly vented exhaust fan is essential to prevent mould, peeling paint and damage. A remodel is the time to upgrade ventilation if it's inadequate. Good moisture control protects your whole investment and keeps the finished bathroom healthy.

The main drivers are moving plumbing, tile work (labour-intensive and skill-dependent), the vanity and fixtures, and whether you're doing a tub, a shower, or a tub-to-shower conversion. Tile and waterproofing labour is a significant part of the cost — and worth paying for, because it's where quality matters most.
A remodel is the ideal time to build in accessibility if you're planning to age in place or want a future-proof home: a curbless shower, grab bars (or blocking in the walls to add them later), a comfort-height toilet, and non-slip surfaces. These add safety and can broaden resale appeal, especially in the right market.
A full bathroom remodel typically takes a few weeks once work starts, longer with custom orders or structural changes. Plumbing and electrical work usually needs permits and licensed trades. Expect the usual behind-the-wall surprises — old plumbing, hidden water damage — and a clear process for approving any extra work.
Share your scope, photos and measurements for firm, comparable quotes. On Genie you post your bathroom project once and receive multiple itemized quotes from verified, insured pros, compare their past bathroom work alongside price, and keep the scope, quotes and warranty-backed work in one place.
Every task in this guide is something you can book on Genie — vetted, insured pros at an upfront or quoted price:
Proper waterproofing behind the tile and around the shower and tub — it's what you don't see, and doing it wrong causes rot, mould and expensive hidden damage. It's the top reason to use pros who do it right.
Moving plumbing (the biggest driver), tile work, the vanity and fixtures, and tub-or-shower choices. Keeping fixtures in their existing spots and avoiding layout changes saves the most.
Typically a few weeks once work starts, longer with custom orders or structural changes, plus ordering lead time. Plumbing and electrical usually need permits and licensed trades.