Why most bathroom renovations go over budget
Most bathroom renovations in Toronto don’t go over budget because the work itself was unusual — they go over budget because the planning was skipped. A fixture ordered too late, plumbing moved on a whim, a permit nobody checked for: each one adds days and dollars after demolition has already started. This checklist fixes that. Work through these 15 decisions in order, before anything gets torn out, and your renovation starts on a plan instead of a guess. If you’re still weighing whether to renovate at all, our bathroom renovation team can walk you through the options with a free estimate.
1. Set your budget — and a contingency
Decide what the project is allowed to cost before you fall in love with a specific tile or vanity. In Toronto, a cosmetic refresh (new fixtures, paint, hardware, keeping the layout) typically lands in the lower five figures, while a full gut renovation with new tile, plumbing, and fixtures usually runs higher, depending on size and finishes. Write the budget down, then add a 10–15% contingency for what hides behind old walls, like water damage or outdated wiring. Our bathroom renovation cost guide breaks down what drives the price up or down in Ontario.
2. Decide the scope: refresh, remodel, or full gut
Be honest about which of the three you’re doing. A refresh swaps surfaces and fixtures without moving walls or plumbing. A remodel changes the layout or replaces major elements but keeps the footprint. A full gut strips the room to the studs. Each step up adds cost and disruption — but also the chance to fix real problems like poor waterproofing. Naming the scope early keeps quotes comparable: contractors pricing a refresh and a gut renovation aren’t pricing the same job.
3. Measure and plan the layout
Measure everything — wall to wall, ceiling height, door swing, and the distance from the toilet to the nearest wall. Small bathrooms punish bad layouts: a door that hits the vanity, a shower door with no clearance. The single biggest cost decision here is plumbing. Keeping the toilet, sink, and shower where they are saves thousands; moving any of them means opening floors and re-routing drains. If space is tight, see our guide to small bathroom renovations in Toronto for layout ideas that work in compact footprints.
4. Choose fixtures before you demo
Pick the toilet, vanity, tub or shower, faucets, and shower system before demolition day — not during it. Fixtures have lead times, and a backordered vanity can stall a half-finished bathroom for weeks. Confirm dimensions against your measurements and check that finishes match across brands. Ordering early is the cheapest insurance against delays.
5. Pick materials that handle moisture
A bathroom is the wettest room in the house, so materials need to earn their place. Porcelain and ceramic tile handle constant moisture far better than wood-look alternatives in a shower zone; grout should be sealed, and waterproofing membrane behind shower tile is non-negotiable. Large-format tiles mean fewer grout lines to clean, and matte finishes hide water spots better than polished ones.
6. Plan lighting and electrical
One overhead light is not a lighting plan. A good bathroom layers task lighting at the mirror (so you’re not shaving or applying makeup in your own shadow) with ambient light for the rest of the room. Heated floors are a comfort upgrade worth deciding on before tile goes down, not after. Every outlet near water needs GFCI protection, and any electrical work should be done by a licensed electrician.
7. Check ventilation and mould prevention
A bathroom fan that vents into the attic is a mould problem waiting to happen — it must exhaust outside. Check that the fan is sized for the room and quiet enough that people will actually use it; a loud fan gets switched off, and an unused fan doesn’t prevent moisture damage.
8. Find out if you need a permit
Cosmetic work — swapping a vanity, retiling, repainting — usually needs no City of Toronto building permit. Structural changes, moving plumbing or electrical, or adding a new bathroom usually do. Condo owners also need board approval. Check both before signing a contract to avoid a stop-work order mid-job.
9. Get 2–3 written quotes and compare like-for-like
Get two or three written quotes for the same scope, materials, and fixtures — otherwise you’re comparing a refresh price against a gut-renovation price. Check what’s included (disposal, permits, waterproofing) and what’s excluded. A suspiciously low quote usually means something was left out.
10. Vet the contractor before you sign
Ask for proof of insurance, references from recent local bathroom jobs, and photos of finished work. A written contract should cover scope, materials, dates, payment schedule, and warranty — never pay the full amount up front. If a contractor won’t put details in writing, that’s your answer.
11. Set a realistic timeline
A straightforward refresh can take a couple of weeks; a full gut renovation typically runs four to eight weeks, plus extra time for inspections or backordered fixtures. Don’t book guests or a sale around the earliest possible finish date. Our home renovation timeline guide explains where delays most often come from.
12. Plan for life without that bathroom
If it’s your only bathroom, arrange an alternative — a neighbour’s shower, a gym membership, or family nearby. Even with a second bathroom, expect dust, noise, and early mornings. Clear the room before work starts.
13. Order everything before demolition
Tile, vanity, fixtures, faucets, lighting — have it all on site, or confirmed in stock with a delivery date, before the first wall comes down. A half-demolished room waiting on a backordered vanity is the most common cause of a stalled renovation.
14. Protect the rest of your home
Renovation dust travels. Agree on dust barriers, floor protection for hallways, and a clear path for workers and materials before demolition starts.
15. Do a proper final walkthrough
Before the final payment, walk the finished bathroom with your contractor: grout lines, caulking around the tub and shower, fixture operation, paint touch-ups, door and drawer alignment. Write down anything needing fixes and get the warranty in writing.
Quick-reference checklist
- Set your budget plus a 10–15% contingency
- Decide the scope: refresh, remodel, or full gut
- Measure the room and plan the layout
- Choose fixtures before demolition
- Pick moisture-proof materials
- Plan lighting and electrical
- Check ventilation and mould prevention
- Confirm permits and condo approval
- Get 2–3 written, like-for-like quotes
- Vet the contractor and get a written contract
- Set a realistic timeline with a buffer
- Plan for life without that bathroom
- Order everything before demolition
- Protect the rest of your home
- Do a final walkthrough and get the warranty in writing
Frequently asked questions
How long does a bathroom renovation take in Toronto?
A refresh usually takes one to three weeks; a full gut renovation typically takes four to eight weeks.
Do I need a permit for a bathroom renovation in Toronto?
Cosmetic work usually doesn’t; structural, plumbing, or electrical changes typically do, and condo owners also need board approval.
What is a typical bathroom renovation cost in Toronto?
A refresh usually lands in the lower five figures, while a full gut runs higher depending on size and finishes; moving plumbing is one of the biggest cost drivers.
Should I move the plumbing in my bathroom?
Only if the layout genuinely doesn’t work — keeping the toilet, sink, and shower in place saves thousands.
Can I stay in the house during the renovation?
Yes, in most cases, but expect dust and noise; if it’s your only bathroom, arrange an alternative before work starts.
Ready to start? Book a free estimate with SM Builders — call 647-331-7366.
