Bathroom Renovation Cost in Milton, Oakville and Mississauga (2026)
If you have asked three contractors to quote the same 5x8 bathroom in Milton, Oakville or Mississauga, you may have received numbers like $12,000, $28,000 and $60,000. That spread is normal. This guide explains what each price level actually buys, which details drive the cost, when you need a permit in each city, and how to get a quote you can trust.
Quick answer: most bathroom renovations in Milton, Oakville and Mississauga fall between $8,000 and $35,000. A cosmetic refresh sits at the low end, a full gut of a standard bathroom in the middle, and large ensuites or layout changes can pass $60,000 to $100,000+.
Figures are typical labour plus materials before HST. Your real number depends on size, layout changes, waterproofing and what is found behind the old tile.
Typical 2026 price ranges by scope
| Scope | Typical range (before HST) | What is usually included |
|---|---|---|
| Cosmetic refresh | $8,000 - $15,000+ | Same layout. New vanity, toilet, faucets, lighting, paint, and possibly a tub or shower surround replacement. |
| Full gut, same layout | $18,000 - $35,000+ | Strip to studs, update plumbing where accessible, new waterproofing, tile floor and walls, new fixtures, fan and lighting. |
| High-end or layout change | $35,000 - $60,000+ | Moving the toilet, shower or drain, curbless or custom tiled shower with glass, in-floor heating, larger format tile. |
| Large primary ensuite | $60,000 - $100,000+ | Freestanding tub, double vanity, custom millwork, premium fixtures, more complex electrical and ventilation. |
Want a number for your own bathroom? Use our bathroom renovation cost calculator for a starting range, then we confirm it on site.
A finished renovation looks simple. Most of the cost difference is in the work you cannot see.
What actually changes the price
1. Moving plumbing
Keeping the toilet, tub and drains where they are is the single biggest way to control cost. Relocating a drain means opening floors, re-sloping pipes and, in all three cities, a building permit with plumbing inspections.
2. Shower type and waterproofing
A tub with a tiled surround costs less than a custom walk-in shower. Curbless showers need the floor recessed or built up, a properly sloped base and a full waterproofing membrane. This is where cheap jobs cut corners, and it is the most common reason a bathroom fails within a few years.
Backer board and a waterproof membrane go in before any tile. If a quote does not mention waterproofing, ask why.
3. Tile area and tile size
Full-height wall tile, large format porcelain and patterned layouts take more material and more labour. Large tiles also need flatter walls and floors, which can add prep time.
4. Fixtures and finishes
The same bathroom can use a $400 vanity or a $4,000 one. Faucets, glass, lighting and heated floors swing the budget by thousands without changing the labour much.
5. Ventilation and electrical
A properly ducted exhaust fan protects your drywall and paint from moisture. New circuits for heated floors, lighting or outlets require an Electrical Safety Authority (ESA) permit and a licensed electrician.
6. What is behind the old tile
Rotted subfloor, old leaks, mould and outdated piping are only found during demolition. A good quote names a contingency for this instead of surprising you mid-project.
Do you need a permit for a bathroom renovation?
The rules in Milton, Oakville and Mississauga all follow the Ontario Building Code, and the practical answer is similar in each city:
- No building permit is usually needed to replace fixtures in the same location (a sink, tub, toilet or shower swapped for a new one where the old one was), or for tile, paint, vanities and cabinetry.
- A building permit is required when a plumbing fixture is added, removed or relocated, when drainage is installed or changed, or when walls are structurally altered.
- Electrical work such as new circuits needs a separate ESA permit.
- Condos (common in Mississauga) also need written approval from the condo board or management, and usually have rules on work hours, elevator booking and noise.
Permit fees vary by city and scope. For example, the Town of Milton's minimum fee for any permit type is $264.20 in its current fee schedule. Rules change, so we confirm requirements with the city before work starts on every job that may need a permit.
DIY, handyman or general contractor?
| Option | Upfront cost | Main risk |
|---|---|---|
| DIY | Lowest | Waterproofing and slope mistakes that show up as leaks months later, and no warranty. |
| Handyman or freelancer | Low to medium | Unclear scope, skipped permits and no licensed plumber or electrician for the parts that need one. |
| General contractor | Medium to high | Higher price, but one written scope, coordinated licensed trades, permits handled and a workmanship warranty. |
The cheapest quote is often the one that leaves out waterproofing, permits or proper ventilation. Compare quotes line by line, not by the total.
What a failed bathroom costs
A leaking shower upstairs usually shows up first as a stain on the ceiling below.
When a shower is built without a proper membrane or slope, water gets behind the tile. The fix is rarely just new grout. It usually means removing the tile and shower base, drying and repairing the framing and subfloor, rebuilding the waterproofing, and repairing the ceiling below. In most cases that costs more than building it correctly the first time.
Cracked grout and loose tile are early warning signs of movement or moisture behind the wall.
Local notes for Milton, Oakville and Mississauga
Milton
Many Milton homes were built in the last 25 years with builder-grade bathrooms. Common projects are replacing a tub with a walk-in shower, upgrading vanities and adding a proper exhaust fan. Layouts are usually standard, which keeps cost predictable.
Oakville
Oakville has a mix of newer subdivisions and older homes. Older bathrooms are more likely to hide old leaks or outdated piping, so we recommend a contingency. Ensuite renovations with larger showers and double vanities are common here.
Mississauga
Mississauga has many condos and townhouses. Condo bathrooms are smaller but need board approval, building rules and careful planning around shared plumbing stacks. Houses follow the same permit rules as Milton and Oakville.
How to get an accurate quote
- Take photos of the whole bathroom, the ceiling below it, and any damage or stains.
- Measure the room (length, width and ceiling height).
- Decide what must stay where it is and what you want to move.
- Get a starting range from our bathroom calculator.
- Book a site visit so the scope, permits and waterproofing are confirmed in writing before work starts.
Get a bathroom renovation quote in Milton, Oakville or Mississauga
MyAurora is a licensed and insured general contractor with WSIB-covered crews and a written workmanship warranty. Send photos and a few details and we will reply with next steps.
Call or WhatsApp 437-985-2935 Bathroom renovation servicesEmail: info@myauroras.com
Frequently asked questions
How much does a bathroom renovation cost in Milton?
Most Milton bathroom renovations cost between $8,000 and $35,000 before HST. A cosmetic refresh starts around $8,000 to $15,000, and a full gut of a standard bathroom is usually $18,000 to $35,000. Moving plumbing or building a custom shower adds to that.
Is a bathroom renovation more expensive in Oakville?
Materials cost about the same across the GTA. Oakville projects often cost more because homeowners choose larger ensuites and higher-end finishes, and older homes can have hidden damage that needs repair.
Do I need a permit to renovate a bathroom in Mississauga?
Not if you replace fixtures in the same location. You do need a building permit if a sink, tub, toilet or shower is added, removed or relocated, or if drainage is changed. Condo owners also need condo board approval.
How long does a bathroom renovation take?
A cosmetic refresh usually takes about one to two weeks. A full gut renovation usually takes three to five weeks, plus extra time if a permit, custom glass or special-order tile is needed.
What is the cheapest way to update a bathroom?
Keep the layout, keep plumbing in place, and replace the vanity, toilet, faucets, lighting and paint. If the tub and surround are sound, re-caulking and new hardware can extend their life.
Why do bathroom renovation quotes vary so much?
Quotes differ in what they include. Lower quotes often leave out waterproofing, permits, licensed plumbing or electrical work, ventilation and a contingency for hidden damage. Always compare the written scope, not just the total.
Do you offer a warranty on bathroom renovations?
Yes. MyAurora provides a written workmanship warranty, and the length is stated in your estimate before work starts.
Related guides and services
- Bathroom renovation in Milton, Oakville and Mississauga
- Bathroom renovation cost calculator
- Basement renovation and legal basement suites
- Kitchen renovation cost guide
Price ranges are typical for 2026 and are not a quote. Permit rules are summarized from the Town of Milton, Town of Oakville and City of Mississauga building permit pages. Always confirm with your municipality for your specific project.
