A powder room renovation in the GTA runs $18,000 to $30,000 in 2026. A standard family bathroom runs $30,000 to $55,000. A primary ensuite with a curbless shower, freestanding tub, and double vanity lands between $40,000 and $80,000, and the high end keeps climbing for steam, heated floors, and stone slab walls.
Bathrooms are the most expensive room per square foot in any house. A 40 sq ft powder room costs more per foot than a 200 sq ft kitchen. The reason is density — every inch is plumbing, electrical, ventilation, waterproofing, tile, stone, glass, and finish carpentry stacked on top of each other.
The three tiers, what each one buys
A powder room at $18,000 to $30,000 buys a relocated or upgraded toilet, a new vanity with an undermount sink, a quartz top, a wall-mounted faucet if the wall framing supports it, new tile floor, paint, lighting, and exhaust ventilation to current code. No shower, no tub, no waterproofing system. The work is mostly finish carpentry, plumbing fixtures, and tile.
A family bathroom at $30,000 to $55,000 adds a tub-shower combination or a standard alcove shower, a tiled wet area requiring a full waterproofing assembly, a vanity, mirrors, accessories, and the rough-in changes that come with all of it. This is the most common bathroom renovation in the GTA. Most of the variance inside the range is tile selection (porcelain vs natural stone), shower glass (frameless vs framed), and faucet tier.
A primary ensuite at $40,000 to $80,000 typically includes a curbless walk-in shower, a freestanding tub, a double-sink vanity, a separate water closet, heated tile floor, niche detailing, frameless glass, and lighting that responds to the tile and stone choices. Above $80,000, you are into stone slab walls, steam units, body sprays, custom millwork vanities, and primary ensuites that approach 200 sq ft. We have built a few above $150,000 — the cap is the architecture, not the appetite.
Waterproofing is the line item that should not be optional
The single biggest mistake in a GTA bathroom renovation is skipping a proper waterproofing assembly behind the tile in a wet area. A cheap quote will use cement board with no membrane and call it waterproof. It is not. Cement board is moisture-resistant, not waterproof. Water gets through it within a few years and sits on the framing.
A proper assembly uses either a sheet membrane (Schluter Kerdi, Wedi, Laticrete Hydro Ban Sheet) or a roll-on liquid membrane over cement board, with seam treatment at every change of plane and at every penetration (mixing valve, shower head, body sprays, drain). On a curbless shower, the entire bathroom floor is part of the assembly because there is no curb to contain water.
Add roughly $1,800 to $3,500 for a properly waterproofed standard shower over what a cheap contractor would quote for cement board alone. On a curbless walk-in, add $3,000 to $5,500. It is the cheapest insurance you will ever buy on a bathroom.
For more on how we approach the wet work, see our bathrooms service page. For Toronto-specific context — heritage homes, plaster-wall protocols, condo-stack reroutes — see our bathroom renovation in Toronto landing page. Two recent projects carry the numbers we just described: our Forest Hill Bathroom Suite is a full primary-ensuite build in a pre-war home, and the Yorkville Powder Room is a small-footprint condo reset that landed at the low end of the range.
Fixture tiers, in plain numbers
Toilet. A code-minimum dual-flush is $400 to $700. A wall-hung tank-in-wall system (Geberit, TOTO) is $1,800 to $3,500 with the rough-in. The wall-hung looks better and cleans easier. The standard floor-mount works fine.
Faucet. A reliable mid-tier lav faucet is $400 to $700. A premium European brand (Vola, Dornbracht, Fantini) is $1,200 to $3,500. The valve quality is genuinely different at the top. The aesthetic differs more.
Shower system. A single-handle pressure-balanced valve with a fixed head is $600 to $1,200 in fixtures. A thermostatic valve with a hand shower, fixed head, and body spray is $2,500 to $6,000. Add a steam unit for $4,500 to $8,500 plus electrical and ventilation work.
Tub. A standard alcove tub is $500 to $1,200. A freestanding cast iron or stone resin tub is $3,500 to $9,000. Plus the floor structure underneath needs to support 600 to 900 lb filled, which sometimes means sister joists from below.
Why heritage homes cost more
A bathroom renovation in a 1910 Cabbagetown semi or a 1920s Riverdale Victorian costs 20 to 35 percent more than the same scope in a 1985 Mississauga detached. The reasons compound:
- The floor framing is rough lumber on irregular spacing, often undersized for modern fixture loads. Sister joists or replace.
- The plaster walls and lath need to come down completely; you cannot patch into them cleanly. Add demolition and disposal cost.
- The plumbing stack is cast iron or galvanized, often 100 years old, and almost always needs replacement at the bathroom in question. Add $2,500 to $6,000.
- The electrical is knob-and-tube or early aluminum. Bringing it to code with GFCI protection, dedicated circuits, and proper grounding adds $2,000 to $4,500.
- The walls are not square. Tile setters take longer.
If you are in a Heritage Conservation District, exterior changes (a new bathroom window) trigger a Heritage Permit Application separate from the building permit. Most bathroom renovations stay interior, so this rarely applies. When it does, add four to eight weeks.
What the cheap quote leaves out
Common omissions on a $20,000 bathroom quote that should have been $32,000:
- Waterproofing membrane. Replaced with cement board only.
- Plumbing rough-in beyond the existing locations. Quote assumes you keep everything where it sits.
- Electrical upgrade for GFCI, dedicated fan circuit, and modern lighting. Quote uses existing wiring.
- Permit and inspection. Quote assumes "we don't need one." For anything beyond a like-for-like fixture swap, you do.
- Disposal and dust containment. Quote assumes you live with the demolition.
- Tile beyond a basic builder selection. Quote uses a $2/sq ft tile and tells you to upgrade later.
Add those back and the $20,000 job is a $32,000 job sold incompletely.
What to do next
Decide which tier you are buying first — powder, family, primary — then decide on the waterproofing standard. Those two decisions set 70 percent of the budget. Tile and fixture selection move it the rest of the way. Use our cost calculator for a private estimate, and read our process page for how we sequence the work to keep one of your bathrooms operational while the other is opened up.
