How to Plan a Bathroom Renovation: A GTA Homeowner's Checklist

Start with real numbers, because every later decision hangs off them. As of 2026, a full bathroom renovation in Toronto and the GTA typically runs $15,000 to $30,000. Powder rooms come in lower at $6,000 to $12,000; primary ensuites with walk-in showers and double vanities run $28,000 to $45,000 and beyond. Labour is roughly a third of the total, quotes normally exclude 13% HST, and our Toronto bathroom cost guide breaks down where each dollar goes.

On top of the working number, park a contingency of 10 to 20%. In pre-1990 GTA homes especially, demolition has a habit of revealing things — old galvanized supply lines, subfloor rot around the toilet flange, wiring that must be brought to code once exposed — and the contingency is what keeps those discoveries from gutting your finishes budget.

Then write down your two or three non-negotiables: the heated floor, the walk-in shower, the double vanity. When budget pressure arrives mid-project — and it usually does — this list decides what flexes and what doesn't, calmly, instead of at 9 p.m. over a change order.

The layout question is really one question: does the plumbing stay where it is? Keeping the toilet, sink, and tub or shower in their current positions keeps you at the friendly end of every cost range. Relocating fixtures adds $2,000 to $6,000 in plumbing work and usually triggers a building permit, because new drain and vent routing has to pass inspection.

Sometimes moving plumbing is worth every dollar — a tub blocking the only sensible shower location, a toilet greeting you at the door. But make that call deliberately, on paper, before you have fallen for a vanity that only fits the new layout. Decide the tub question here too: if another bathroom in the house has a tub, converting this one to a walk-in shower frees the biggest footprint in the room and suits how most families actually wash.

This is also the moment to check what your house will add to the project. Homes built before about 1990 warrant an asbestos test before demolition; 1960s–70s Scarborough, Etobicoke, and Mississauga homes may have aluminum branch wiring an electrician should assess. Surprises priced in week one cost less than surprises found in week three.

Materials cause more schedule damage than trades do, and the fix is sequencing. Choose in this order: tile first (it sets the room's look and its lead time), then vanity and countertop, then tub or shower base, then plumbing fixtures in a matching finish, then lighting, mirror, and fan. The shower glass is measured only after tiling is complete, so order it last but know your supplier's turnaround upfront.

Two rules protect the schedule. First, confirm lead times before committing — in-stock porcelain arrives in days, while specialty tile and custom vanities can take six to eight weeks, and one late item stalls every trade behind it. Second, have every material on site, unboxed, and inspected for damage before demolition begins. A cracked vanity top discovered during install pauses the project; the same crack discovered three weeks earlier costs nothing.

Spend your quality dollars where water lives: the waterproofing system, the shower valve, the fan. Save, if you need to, on things that swap easily later — mirrors, hardware, accessories. Tile labour in the GTA runs $8 to $15 per square foot, so a busy pattern or mosaic raises the labour line, not just the material one.

Most bathroom renovations in the GTA need no building permit: like-for-like replacement of fixtures, tile, and flooring is exempt everywhere. A permit enters the picture when plumbing moves or is added, walls change, or you are creating a new bathroom. Electrical work runs on a separate track regardless — every new circuit, pot light, or heated-floor connection needs an ESA notification, typically $90 to $300 and handled by your electrician. Permit review takes weeks, not days, so if your layout triggers one, it belongs at the front of the schedule, not the middle.

Logistics deserve ten minutes of thought now. Where will demolition debris and deliveries stage? Which bathroom will the household use — and if this is your only full bathroom, what is the plan for the two-to-three-week build? Condo owners have an extra layer entirely: board approval, insurance certificates, elevator bookings, and restricted work hours, which is its own planning topic.

Our bathroom renovation order of steps shows how permits, trades, and inspections interlock once the build starts — reading it before you schedule anything will save you at least one hard conversation.

Collect two or three quotes, but compare scopes, not totals. A meaningful bathroom quote names the waterproofing system, itemizes demolition and disposal, states fixture allowances in dollars, covers permits and ESA fees, and shows a payment schedule tied to completed stages — never a large deposit upfront. A renovation quote should cost you nothing, and what it includes tells you plenty about the company behind it.

Verify before you sign: proof of liability insurance, WSIB clearance, references from bathroom projects specifically, and a written warranty — we stand behind our work for two years, and you should expect a comparable commitment in writing from anyone you hire. Then read the contract itself for scope, start and end dates, change-order process, and holdback terms.

The cheapest quote is usually describing a smaller job — no membrane specified, no disposal, an allowance that buys builder-grade everything. Price the identical scope across bidders and the spread usually shrinks to a difference you can reason about.

Here is the honest calendar for a standard GTA bathroom, assuming no permit: one to two weeks for site visit, quote, and design decisions; two to six weeks of material lead time (planning continues while you wait — this is not dead time); then two to three weeks of construction in a fixed sequence of demolition, plumbing and electrical rough-in, inspection where applicable, waterproofing, tile, and finally fixtures, glass, paint, and caulking. Ensuites with layout changes run three to five weeks of build; full timeline details here. If a permit applies, add several weeks up front.

Call it eight to twelve weeks door to door, and be suspicious of anyone promising dramatically less — compressed schedules usually compress the steps you cannot see, and waterproofing cure times do not negotiate.

So: set the range, lock the layout, order everything, sort permits, hire on scope, then build. If you would rather run that sequence with a partner who does it weekly, our bathroom renovation team handles the whole chain — design through final walkthrough — anywhere in Toronto and the GTA.