Bathroom Renovation Timeline: How Long Does a Washroom Reno Take in the GTA?

"How long will we be without a bathroom?" is the first question almost every Toronto family asks — especially in homes with only one full washroom. The honest answer is that the on-site work is usually measured in weeks, but the whole project, including planning and ordering, takes longer. Here's a realistic, phase-by-phase timeline so you can plan around it.

The short answer

For a typical main bathroom renovation keeping the same layout, homeowners can usually expect a couple of weeks to a few weeks of on-site work once everything is ordered and on site. Changing the layout, moving the toilet or shower drain, adding a curbless shower, or dealing with hidden water damage stretches that out. Planning, design and product lead times add several more weeks before demolition. Every project is different, so ask your contractor for a written schedule.

Phase 1: Planning and design (before anyone picks up a hammer)

What happens: site measure, discussion of how you use the room, layout options, budget, and selection of tile, vanity, toilet, shower system, glass, lighting and ventilation.

Why it matters: the decisions made here determine whether the build goes smoothly. Changing your mind about a niche location after the waterproofing is done costs time and money.

Tips:

• Decide early whether you're keeping the tub. Tub-to-walk-in-shower conversions are popular, but if it's your home's only tub and you have young children (or plan to sell to a family), think twice.
• Pick your tile size before the layout is final; large-format porcelain needs flatter walls and floors.
• Plan ventilation. A properly sized, ducted-to-exterior exhaust fan is the cheapest insurance against mould.

Phase 2: Ordering and lead times

Custom vanities, glass shower enclosures and some tile and fixtures can take weeks to arrive. Glass is normally measured after tile is installed, so it is often the last item on site. A good contractor won't start demolition until the critical items are confirmed — the worst-case scenario is a gutted bathroom waiting on a back-ordered valve.

Phase 3: Permits (if needed)

In the City of Toronto, a building permit is generally required when you install or modify plumbing systems or make structural changes. Swapping fixtures in the same location usually doesn't need one, but moving drains or adding a new bathroom does. Basement bathrooms that involve breaking the slab almost always do. Check the City's When Do I Need a Building Permit? page, and factor permit review time into your schedule. Other GTA municipalities — Vaughan, Mississauga, Brampton, Richmond Hill — run their own building departments with their own timelines.

Phase 4: On-site construction, step by step

Below is the typical sequence. Exact durations vary; drying and curing times are the parts you can't rush.

1. Protection and demolition — floors and hallway protected, fixtures and tile removed, debris hauled away. Usually quick, but this is where hidden problems appear: rotted subfloor around the toilet, old galvanized pipes, knob-and-tube wiring in older Toronto homes.
2. Rough-in plumbing — drains, supply lines and the shower valve are installed or moved. Inspection if a permit applies.
3. Rough-in electrical and ventilation — pot lights, GFCI outlets, heated-floor wiring, fan ducting. Electrical work in Ontario must be done by a Licensed Electrical Contractor with an ESA notification.
4. Subfloor and wall prep — repairs, levelling, cement board or foam board in wet areas, framing for niches and benches.
5. Waterproofing — a membrane system in the shower and often the whole floor. Some products need curing time before tile. This is the step that separates a bathroom that lasts from one that leaks into the kitchen ceiling three years later.
6. Tile — floor and walls. Tile and grout need time to set. Complex patterns, large-format tile and mosaics take longer.
7. Paint — ceiling and non-tiled walls, using a moisture-resistant bathroom paint.
8. Fixture installation — vanity, toilet, faucets, shower trim, mirrors, accessories, lighting.
9. Glass — shower glass is measured after tile and installed when fabricated; this can add a gap at the end.
10. Final clean and walkthrough — test every fixture, check silicone lines and grout, agree on a written deficiency list.

What can delay a bathroom renovation?

• Hidden damage behind tile or under the floor.
• Back-ordered products — especially custom vanities and glass.
• Inspection scheduling when a permit is involved.
• Changes mid-project — moving a niche or changing tile after work has started.
• Structural surprises — a joist cut years ago for a drain, or an undersized floor for heavy stone.

How to live through it

• If it's your only bathroom, ask whether the contractor can keep the toilet functional during part of the project, or plan to stay with family for the wettest phases.
• Expect water shut-offs on rough-in days.
• Agree on working hours and how the crew will access the house. Toronto's noise bylaw restricts construction noise during certain hours, so most crews work standard daytime hours.

Cost context

Bathroom costs in Toronto vary widely. Route Homes' 2026 guide lists a main three- or four-piece bathroom at about $12,000–$18,000 at an economy finish, $18,000–$32,000 standard, and $32,000–$58,000 luxury, with powder rooms around half that (source). Kopman Build's Q3 2026 index reports $22,000–$38,000 for a standard bathroom (source). These are third-party ranges; your quote depends on scope.

Basement bathrooms

Adding a bathroom to a basement follows the same sequence with extra steps at the start: breaking and re-pouring the concrete slab to install drains, and sometimes a sewage ejector pump if the drain can't flow by gravity. It's best done as part of a larger basement finishing project.

Planning a bathroom or washroom renovation?

Daystar Homes & Construction renovates bathrooms, ensuites, powder rooms and basement washrooms across Toronto, North York, Vaughan and the GTA. We'll give you a written scope and schedule before work starts. Book a consultation or learn more about our bathroom renovations in Toronto.

Sources: City of Toronto building permit guidance; Route Homes, "Home Renovation Cost Toronto 2026"; Kopman Build, "Toronto Renovation Cost Index — Q3 2026". Timelines described are general industry patterns, not guarantees.