Bathroom renovations are one of the most common projects Ontario homeowners tackle — and one of the most likely to run over budget. Hidden water damage, waterproofing requirements, and trade coordination between plumbers, electricians, and tile setters make bathrooms uniquely complex relative to their small footprint. This guide provides real 2026 pricing for the GTA and broader Ontario market so you can plan accurately before the first tile is pulled.
Whether you're refreshing a dated powder room, renovating the main family bathroom, or creating a spa-style ensuite, the cost breakdown below covers your scenario.
💡 What to Prepare Before Getting Quotes
Have ready: your bathroom's dimensions (length × width), a list of what you want changed, your preferred tile style (large format / subway / mosaic), and whether plumbing is staying in its current location. Keeping plumbing in place is the single biggest way to control costs — moving a toilet or shower drain adds $1,500–$4,000+ to any bathroom renovation.
Average Bathroom Renovation Costs in Ontario (2026)
| Bathroom Type | Typical Size | Cost Range (Contractor) | Scope |
|---|---|---|---|
| Powder Room / Half Bath | 15–25 sq ft | $5,000–$12,000 | Vanity, toilet, tile, painting — no shower |
| Small Main Bathroom | 35–50 sq ft | $12,000–$25,000 | Full gut: vanity, tub/shower, toilet, tile |
| Standard Main Bathroom | 50–80 sq ft | $20,000–$40,000 | Full renovation with tiled shower, heated floor optional |
| Master Ensuite | 80–150+ sq ft | $35,000–$70,000+ | Walk-in shower, double vanity, soaker tub, premium tile |
⚠️ GTA Labour Rates Are Higher Than Provincial Average
Plumbers, electricians, and tile setters in Toronto and the 905 belt charge 20–30% more than rural Ontario rates. The pricing in this guide reflects GTA market rates. For Kitchener, London, or smaller Ontario cities, discount by approximately 15–20% across labour lines.
Bathroom Renovation Cost by Component (Ontario 2026)
| Component | Low | Mid-Range | High End | Notes |
|---|---|---|---|---|
| Vanity (supply + install) | $900 | $2,000–$5,000 | $8,000–$15,000 | Single vs. double; stock vs. custom |
| Toilet (supply + install) | $450 | $700–$1,500 | $2,500–$4,000 | Standard / comfort height / bidet seat |
| Tub/Shower (supply + install) | $1,200 | $3,000–$8,000 | $12,000–$25,000+ | Alcove tub vs. custom tile shower |
| Tile — Floor (supply + install) | $800 | $1,500–$3,500 | $5,000–$10,000 | $14–$30/sq ft installed |
| Tile — Shower/Tub Surround | $1,500 | $3,000–$7,000 | $8,000–$18,000 | Subway vs. large-format vs. custom |
| Plumbing (rough-in + fixtures) | $1,500 | $3,000–$6,000 | $8,000–$15,000 | Cost doubles if moving drain locations |
| Electrical (exhaust, lighting, circuits) | $600 | $1,500–$3,500 | $4,000–$8,000 | Heated floor requires dedicated circuit |
| In-Floor Radiant Heat | — | $1,200–$2,500 | $3,000–$5,000 | Electric mat + thermostat; popular upgrade |
| Labour (total) | $3,000 | $7,000–$15,000 | $18,000–$30,000 | 35–45% of total renovation cost |
Labour Costs for Bathroom Trades in Ontario
Bathroom renovations involve more trades than almost any other room — plumber, electrician, tile setter, general contractor, and sometimes a framer and waterproofing specialist. Understanding what each trade costs in the GTA in 2026 helps you verify that contractor quotes are reasonable:
- Licensed plumber: $120–$175/hour. A typical bathroom plumbing rough-in takes 8–16 hours. Fixture installation is an additional 4–8 hours. Full plumbing scope for a bathroom renovation: $2,500–$8,000.
- Licensed electrician: $110–$165/hour. Bathroom electrical (new exhaust fan circuit, GFCI outlets, pot lights, heated floor thermostat) typically runs $800–$3,500.
- Tile setter: $65–$120/hour or $10–$20/sq ft depending on tile complexity. A standard main bathroom (floor + shower surround, 120 sq ft of tile) runs $3,500–$8,000 for labour.
- General contractor markup: 15–25% on all subcontracted trades for coordination, scheduling, and warranty. This is legitimate and standard — a GC managing a bathroom renovation adds real value by sequencing trades correctly.
Hidden Costs in Bathroom Renovations
Bathrooms hide surprises better than any other room in the house. These are the hidden costs GTA homeowners most commonly encounter:
- Failed waterproofing behind old tile: Most bathroom tiles in GTA homes built before 2005 were set over drywall or cement board without proper waterproofing. When the tile comes off, the substrate often needs full replacement. Add $800–$2,500 for proper Schluter Kerdi or RedGard waterproofing in the shower zone.
- Mould in shower walls: A slow leak behind old tiles can mean significant mould remediation before new tile can go in. Minor remediation: $500–$1,500. Extensive mould: $2,000–$5,000+.
- Subfloor rot: Water damage from toilet rings, tub overflow, or caulk failure often penetrates through to the subfloor. Replacing a section of subfloor adds $800–$2,500 and delays the tile schedule.
- Outdated plumbing: Galvanized steel supply lines (found in homes pre-1970s) must be replaced when touched. This can cascade into a partial or full house re-pipe. Budget $2,000–$8,000 if your home has galvanized plumbing throughout.
- Ventilation code upgrade: Ontario code requires a properly ducted exhaust fan in every bathroom. Many older GTA homes have fans that duct into the attic (not allowed) or no fan at all. Adding a proper ducted fan runs $400–$1,200.
How to Plan Your Bathroom Renovation
Assess Your Bathroom Size and Layout
Measure your bathroom's length, width, and ceiling height. Note the location of existing drains (toilet, tub, shower). Decide whether you're keeping plumbing in place or relocating anything — this single decision can swing costs by $3,000–$8,000. Photograph every corner, especially behind the toilet and around the tub edge. These photos help contractors give more accurate quotes without needing site visits for preliminary estimates.
Choose Your Materials Before Getting Quotes
Tile selection has the biggest impact on both labour cost and timeline. Standard 3×6 subway tile is the most labour-efficient — tile setters can install it quickly and it's universally understood. Large-format tile (24×24 or larger) requires more prep, more care in levelling, and takes longer to install — add 20–40% to tile labour. Visit tile showrooms with your bathroom dimensions written down. Get pricing on 10–15% overage for cuts and breakage. Decide on your vanity before getting quotes — size and style affect plumbing rough-in location.
Get Three Contractor Quotes
Ask each contractor for an itemized quote showing: demo costs, plumbing, electrical, waterproofing, tile labour, vanity installation, fixture installation, and cleanup separately. This structure lets you compare apples to apples. Ask each contractor specifically: "What happens if there's mould or subfloor damage behind the tile?" The answer tells you more about their professionalism than any other question. Good contractors will quote a T&M allowance for contingencies; less experienced ones will give you a low number and charge extras liberally.
Plan the Trade Sequence Carefully
Bathroom renovations follow a strict sequence: demo → rough plumbing → rough electrical → waterproofing → cement board → tile → grouting → vanity and fixture installation → final electrical → final plumbing → painting. Each step must be complete and inspected (if permitted) before the next begins. If a tile setter shows up before the waterproofing inspection passes, the whole project stops. Your contractor should own this sequence — if you're managing trades yourself, build in buffer days between each trade.
Allocate 15–20% for Hidden Costs
A bathroom renovation in a home older than 15–20 years in the GTA should have a 15–20% contingency set aside before work begins. In our experience, the majority of bathroom projects in older GTA homes hit at least one surprise — typically waterproofing, subfloor condition, or outdated plumbing. The homeowners who plan for this finish on time and on budget. Those who don't end up financing mid-project.
Bathroom Renovation Cost Summary Table (Ontario 2026)
| Item | Low | Mid-Range | High End |
|---|---|---|---|
| Vanity (supply + install) | $900 | $2,000–$5,000 | $8,000–$15,000 |
| Tile — floor + shower | $2,300 | $5,000–$10,500 | $13,000–$28,000 |
| Plumbing | $1,500 | $3,000–$6,000 | $8,000–$15,000 |
| Electrical | $600 | $1,500–$3,500 | $4,000–$8,000 |
| Toilet (supply + install) | $450 | $700–$1,500 | $2,500–$4,000 |
| Shower/tub (supply + install) | $1,200 | $3,000–$8,000 | $12,000–$25,000 |
| Labour (all trades) | $3,000 | $7,000–$15,000 | $18,000–$30,000 |
| Contingency (15%) | $750 | $2,250–$5,250 | $9,750–$18,750 |
| Total Range | $5,000–$12,000 | $20,000–$40,000 | $45,000–$80,000+ |
Frequently Asked Questions: Bathroom Renovation Costs in Ontario
❓ How much does a bathroom renovation cost in Ontario in 2026?
A small bathroom renovation costs $8,000–$20,000. A standard main bathroom renovation runs $20,000–$40,000. A master ensuite renovation typically costs $35,000–$70,000+. Add 15–20% contingency for homes older than 20 years — hidden water damage and waterproofing failures are common in the GTA.
❓ How long does a bathroom renovation take?
Powder room: 3–5 days. Small main bath: 2–3 weeks. Standard main bath: 3–5 weeks. Master ensuite: 4–8 weeks. The timeline depends heavily on tile complexity and whether any surprises appear during demo. Custom large-format tile work is the single biggest timeline extender.
❓ What's the cheapest upgrade with the biggest visual impact?
Replacing the vanity, toilet, and painting the walls transforms a dated bathroom for $2,000–$5,000 total. A new vanity ($800–$2,500 supply + $400–$800 install), new toilet ($300–$800 supply + $200 install), and fresh paint ($150–$400 DIY) update the main visible elements without touching tile, plumbing, or electrical.
❓ Do I need a permit for a bathroom renovation in Ontario?
Cosmetic updates (vanity swap, new toilet, paint, new tile over existing) don't require a permit. Moving plumbing, adding a new bathroom, modifying structural walls, or adding electrical circuits require permits. In Toronto, permits run $150–$400 for bathroom work. Your contractor should identify and pull any required permits.