Key Takeaways
- A full bathroom gut typically runs five to seven weeks of active construction, longer once permit review and inspection scheduling are counted against the calendar rather than just the days trades are on site.
- Demolition and plumbing/electrical rough-in fill the first two weeks. That's also when a wall opens up and reveals what's actually behind it, most often in homes built before 1980.
- Waterproofing gets its own inspection before a single tile goes down, usually early in week three. It's a short step on the calendar and a long one to get wrong, which is why it has its own dedicated post.
- Tile, fixtures, and the punch list fill the back half of the schedule, and the two things most likely to stretch a six-week job into ten are custom tile on backorder and plumbing that has to be replaced rather than reused.
Most homeowners picture a bathroom renovation as a two-week job: some demo, new tile, a new vanity, done. In our experience running full gut renovations across Ontario, the reality, tub or shower to floor to fixtures, runs closer to six weeks of construction, and that's before counting the permit review and material ordering that happen before a single wall comes down. Neither number is wrong. They're just answering different questions, and knowing which one applies to your project is most of what makes a renovation timeline feel predictable instead of like it's dragging.
This post is a week-by-week bathroom renovation timeline for a standard full gut, in the order the trades actually do it, so you know what to expect on-site and which parts of the schedule are worth watching closely. For the bigger picture, layout decisions, budget ranges, and how to plan the whole project, our complete guide to bathroom renovation in Ontario covers that ground. This one stays narrowly on the calendar.
Week 0: Permits, Selections, and What Happens Before Demo Day
The clock on a bathroom renovation starts before anyone picks up a hammer. Anything that moves a fixture, opens a wall, or touches the framing needs a building permit in Ontario, and permit review takes real time even when the application is clean. Toronto's own building department reviews a complete house-stream application, the category most bathroom renovations fall into, within 10 business days (City of Toronto, Building Permit Review Streams), and that's the target for a complete submission, not a guarantee if drawings come back with comments.
The province's own guidance keeps this general on purpose: a permit is required before you "make renovations or repairs" to a building, but the exact rules for what counts, and what a fixture-in-place swap is exempt from, are set locally rather than provincially (Government of Ontario, Citizens' Guide to Land Use Planning: Building Permits). That's why permit cost and process vary by city more than people expect. In Guelph, a plumbing permit is priced at a flat $30 per fixture, and most bathroom jobs land at the $160 minimum on the interior-alteration rate rather than a bigger square-footage total, since a typical bathroom footprint doesn't come close to the size where that rate takes over. A bathroom renovation in Guelph that only swaps a toilet and vanity in place, no relocation, often skips the permit step entirely, which is the single biggest thing that shortens week 0 to nothing. Kitchener runs it differently again: every alteration permit there carries a $250 rebate fee charged up front and refunded automatically once the final inspection passes, so a bathroom renovation in Kitchener has that fee sitting as a line item on the invoice for the length of the project rather than a sunk cost.
Week 0 is also when tile, the vanity, and any custom glass get selected and ordered, because those lead times run in parallel with the permit review, not after it. A tile that's in stock ships in days. A tile on backorder from overseas can take four to eight weeks, and that number, not the permit, is what actually decides when demo day gets scheduled on a job where the client wants a specific material.
Week 1: Demolition and What It Reveals
Demo strips the room to studs and subfloor: old tile, the tub or shower base, the vanity, and any drywall that's coming out. This is also the point where the crew finds out what's actually behind the wall, and in an older house that's rarely nothing.
Nearly a third of Hamilton's housing predates 1960, and a bathroom in that older stock usually has no real waterproofing membrane behind its original tile and may still run on galvanized supply lines or a cast-iron drain stack. A bathroom renovation in Hamilton in Westdale or the lower city turns up that kind of surprise often enough that we plan for it rather than treat it as a change order shock; a newer Ancaster or Stoney Creek home from the same city almost never does. Either way, week 1 is when that gets settled, because everything after it, the rough-in plan, the subfloor work for a curbless shower, gets built around what's actually there instead of what the original drawings assumed.
Week 2: Rough-In Plumbing and Electrical
With the room open, the plumber and electrician run new supply lines, drain lines, and wiring to wherever the fixtures are actually going, not just wherever they used to be. If the shower is moving, or the layout is changing at all, this is the week that work happens, since it all needs to be in place and inspected before the wall closes back up.
A curbless shower adds a structural step here that's easy to miss on a schedule: the subfloor has to be recessed and pitched continuously toward the drain before framing finishes, work that has to happen at the rough-in stage, not after tile is chosen. Booking the rough-in inspection itself also needs lead time. Most Ontario municipalities ask for at least two business days' notice before a scheduled visit (Town of The Blue Mountains, Building Inspections), so the crew plans the week around when that inspector can actually get there, not just when the plumbing is physically done.
Week 3: Waterproofing, Briefly
Once rough-in passes inspection, the walls and floor get their waterproofing membrane, and that membrane gets its own inspection before any tile goes on top of it. This is the step that decides whether the bathroom is dry in five years or growing mold behind the tile in two, and it deserves more attention than a single paragraph in a schedule post can give it.
We cover the actual materials, methods, and the mistakes that cause failures in bathroom waterproofing and membranes: the part no one sees. For the timeline, the short version is that it's one to two days of work followed by an inspection or a cure time before tile can start, and skipping ahead of that cure time to keep the schedule moving is the single fastest way to void a membrane warranty.
Week 4: Tile Installation
Tile goes down on the floor first, then the walls and any shower niche, each layer needing its own cure time before the next step loads weight or moisture onto it. This is usually the longest single week of visible work, and it's also the week most likely to stretch if a pattern layout, a mosaic, or a specialty grout is involved, since those simply take longer to set correctly than a standard field tile.
Rushing tile to hit a date is where a lot of visible defects come from: lippage between tiles, grout lines that don't run straight, a niche that isn't level. None of that shows up until the room is finished and the light hits it at an angle, by which point it's a redo instead of a five-minute fix.
Week 5: Fixtures, Vanity, and Final Electrical
With tile cured, the plumber sets the toilet, tub or shower fixtures, and sink, and the electrician finishes light fixtures, the exhaust fan, and any heated floor controls. The vanity goes in, and a frameless glass enclosure, if the design calls for one, gets templated only now, since it has to be built to the shower's exact finished opening rather than a drawing measurement. That's also why glass is usually the last thing installed rather than the first thing ordered.
Week 6: Punch List, Final Inspection, and Walkthrough
The final municipal inspection confirms the finished work matches what was approved, and once it passes, what's left is the punch list: caulking, touch-up paint, hardware, making sure every drawer and door closes the way it should. A clean punch list is a half-day of work. One with unresolved rough-in issues or a fixture that arrived damaged can run a week on its own, which is part of why week 6 has more schedule variance built into it than any week before it.
The Six Weeks at a Glance
| Week | What happens | What can hold it up |
|---|---|---|
| 0 | Permit application, material selection and ordering | Permit review time, tile or fixture backorders |
| 1 | Demolition, subfloor and framing assessment | Old plumbing or structural surprises in older homes |
| 2 | Plumbing and electrical rough-in, inspection | Inspection booking lead time, layout changes |
| 3 | Waterproofing membrane and its own inspection | Membrane cure time, skipping ahead too early |
| 4 | Tile installation, floor then walls | Complex patterns, specialty grout, cure time between layers |
| 5 | Fixtures, vanity, glass, final electrical | Custom glass templating, backordered fixtures |
| 6 | Final inspection, punch list, walkthrough | Unresolved rough-in issues, damaged parts on arrival |
What Actually Pushes a Timeline Past Six Weeks
Two things account for most of the delay we see on real jobs, and neither one is the trades working slowly. The first is plumbing that has to be replaced rather than reused, which is common enough in a pre-1980 house that it's worth budgeting the extra time for before demo day rather than being surprised by it in week 1. The second is material lead time: a tile, vanity, or piece of hardware that's backordered doesn't just delay its own week, it delays every week after it, since the schedule is sequential by design.
A layout change is the other real variable. Moving a shower to the opposite wall or relocating a toilet turns a fixture-swap into a full permit review, with the inspection and approval time that comes with it. Keeping fixtures in their existing locations, even in a full gut, is the single biggest lever a homeowner has over how fast the whole project moves.
Frequently Asked Questions
Can a bathroom renovation really finish in two weeks?
A powder room refresh with fixtures staying in place, no permit required, can move that fast. A full gut with a permit, a layout change, or custom tile on order cannot, no matter how available the crew is, since permit review and material lead times don't compress just because labor is ready.
Does a permit always add time to the schedule?
Only if the project needs one. Swapping a toilet, tub, or vanity in the same spot doesn't trigger a permit review in most Ontario municipalities. Moving a fixture, opening a wall, or changing the room's structure does, and that's the work worth planning permit time around.
Why does waterproofing get its own inspection instead of happening alongside rough-in?
Because it has to be verified before it's covered by tile, the same way rough-in plumbing has to be verified before it's covered by drywall. Once tile is set, checking the membrane underneath means removing the tile, which is exactly the failure this step exists to prevent.
What's the single best way to keep a bathroom renovation on schedule?
Order tile, the vanity, and any custom glass in week 0, before demo starts, not after. Material lead time is the delay homeowners have the most control over, and it's also the one most often left until the room is already opened up.
Bottom Line
A bathroom renovation timeline isn't one number, it's six overlapping stages: permits and ordering, demo, rough-in, waterproofing, tile, and fixtures, each one gating the next. Most full gut renovations run five to seven weeks of construction once that sequence runs cleanly, and the two things that reliably push it longer, old plumbing behind an opened wall and a backordered material, are both things you can ask about before demo day rather than discover during it.