There is no single best bathroom renovation contractor Toronto. The best one for your home is the contractor who can prove four things: insurance and WSIB coverage, an itemized written quote, a realistic timeline with a crew they control, and finished bathrooms near you that you can go and look at.

Toronto has thousands of renovation companies, and the City of Toronto’s own guide to choosing a contractor says City staff can’t recommend a contractor or hand out a list. So instead of hunting for one name, hold every contractor you talk to against the same checks.

Below you’ll find those checks, what to ask for, what Ontario law already gives you, how permits work in Toronto, what a bathroom costs here, and the warning signs that should end a conversation. The contractor who passes every check is the best bathroom renovation contractor in Toronto for your project.

1. Proof of insurance, WSIB coverage and licensed trades

A good contractor shows you documents, not a line on a website that says “fully licensed and insured.” Ask for these before you sign anything.

General liability insurance. Ask for a current certificate of insurance. Then call the insurer to confirm the policy is still active, because a certificate on its own can be out of date.

WSIB coverage. Ontario expects workers and independent operators in construction to carry workplace safety and insurance coverage, and the province’s guide to your rights when starting home renovations tells homeowners to check that coverage with the Workplace Safety and Insurance Board. Ask for a WSIB clearance certificate. If an uncovered worker is injured in your home, you could be left dealing with the cost.

Licensed trades, not a “licensed contractor.” Ontario has no single provincial licence for general renovation contractors. What matters is who does the regulated work in your bathroom:

• Electrical work. In Ontario, nobody can run an electrical contracting business without a licence from the Electrical Safety Authority. Ontario’s consumer guidance on hiring an electrical contractor recommends noting the ESA/ECRA licence number and checking that it appears on the estimate, along with ESA permit fees.
• Plumbing. Plumbing is a regulated trade. Ask whether the people doing your plumbing are certified through Skilled Trades Ontario.

So when a company says it is “licensed,” ask exactly which licences, held by whom, and whether those people will be in your bathroom.

2. An itemized quote and a written contract

A single lump-sum number tells you nothing. You can’t compare it against another quote, and you can’t hold anyone to it when the work changes halfway through.

An itemized quote breaks the job into its real parts: demolition and disposal, plumbing, electrical, waterproofing, tile, fixtures, the vanity, glass, permits and HST. It also says which items are allowances. When two quotes differ by several thousand dollars, the itemized version shows you exactly why.

Ontario law already gives you some protection here:

• Any home renovation contract worth more than $50 must be in writing under Ontario law.
• The contract should include a work schedule with start and completion dates.
• The final price can’t be more than 10% above the estimate in the agreement unless you agree to the change.
• If you sign the contract in your home, you generally have a 10-day cooling-off period to cancel for any reason, without a cancellation fee.
• If the contractor misses the stated start date by more than 30 days, you may be able to cancel the contract before work begins.

A good contractor won’t push back on any of this. If one resists putting details in writing, expect the same attitude if something goes wrong later.

3. A realistic timeline and a crew the contractor controls

Most Toronto contractors quote two to four weeks for a standard bathroom. The hands-on work rarely takes that long. Much of the time goes into gaps: waiting for the plumber, waiting for the tiler, waiting for materials, waiting for the next trade to fit you into their week.

Those gaps usually come from subcontracting. When a contractor books separate outside trades for each stage, your bathroom sits idle between them. When the same company employs its own installers, one stage can start as soon as the last one finishes.

Ask every contractor three things:

1. Who will be working in my bathroom, your own staff or subcontractors?
2. Can you give me a day-by-day schedule, not just a total number of weeks?
3. What would make this job run longer, and how will you tell me if it does?

An honest answer to the third question is a good sign. Hidden water damage, rotted subfloor, custom glass orders, permit inspections and late material choices can all add time. A contractor who names these upfront is planning for them.

4. Local work you can see, and reviews you can trust

A polished portfolio isn’t the same as finished bathrooms near you. Stock-looking photos can come from anywhere. What you want is proof the contractor has solved problems in homes like yours.

Toronto housing varies a lot. An older house may hide aging drain pipes, uneven floors or past water damage behind the tile. A condo adds building rules, elevator bookings, work-hour limits and approval from management, which is why condo bathroom renovations in Toronto follow different rules from houses. Ask for examples that match your home, ideally in your part of the city.

When you speak to past clients, ask specific questions:

• Did the job finish on the date promised, and if not, why?
• Did the final price match the quote?
• How did the contractor handle a problem once work started?
• Would you hire them again for another room?

Read reviews on more than one platform. Look for recent reviews that mention details such as names of crew members, the type of bathroom or a problem that got solved. A wall of short, vague five-star reviews posted in the same few weeks is worth checking more closely.

Do you need a permit for a bathroom renovation in Toronto?

It depends on whether anything moves. Replacing a toilet, sink, tub or vanity in the same spot is generally treated as fixture replacement that doesn’t need a building permit in Toronto. Moving or adding plumbing fixtures, altering walls, or changing the structure usually does require a permit.

In Toronto, a plumbing and drain permit related to a renovation is applied for together with the building permit through Toronto Building. Electrical changes are covered separately by an ESA permit. Permit work is inspected at key stages, such as the plumbing rough-in and final completion.

A good contractor tells you which permits your plan needs and handles the application. Be careful with anyone who suggests skipping a permit to save time or money. Unpermitted bathroom work can delay a home sale, lower an appraisal and make buyers nervous.

Permit rules change, so confirm your exact scope with Toronto Building before work starts.

How much does a bathroom renovation cost in Toronto?

A full bathroom renovation in Toronto typically costs between $15,000 and $40,000 in 2026, and many standard full bathrooms land around $20,000 to $30,000. Smaller jobs such as a tub-to-shower conversion that keeps the plumbing in place cost less. Moving plumbing, custom glass, heated floors and premium tile push the price up.

The cheapest quote is often the one that leaves things out. Compare what each itemized quote includes, not just the total. Check whether HST, permits, disposal and waterproofing are in the number.

Watch how you pay, not just how much:

• Keep the deposit small. Ontario’s public campaign on hiring a contractor advised keeping the down payment to no more than 10% and avoiding cash deals.
• Tie payments to milestones, such as demolition done, rough-in passed and tile complete, rather than to calendar dates.
• Use the holdback. Ontario’s construction lien rules let you hold back 10% of the contract price for a period after the job is finished. This protects you if work needs fixing or a supplier goes unpaid.

A legitimate company has the credit to buy its own materials. A demand for a large share of the price before any work starts is a warning sign.

Red flags that should end the conversation

Even a contractor with great reviews isn’t the best bathroom renovation contractor in Toronto for you if any one of these applies:

• They can’t produce a current insurance certificate or WSIB clearance when asked.
• They give a single lump-sum price and won’t break it down.
• They want cash, or a large deposit before any work begins.
• They suggest skipping the permit to save money.
• They won’t put a start date, completion date or scope in writing.
• They can’t say who will do the plumbing and electrical work.
• They pressure you to sign today for a special price.
• Their only proof of past work is generic photos, with no references you can call.

Questions to ask before you hire a bathroom contractor in Toronto

Take this list to every estimate. Compare the answers side by side afterward. The best bathroom renovation contractor in Toronto for your home will answer all ten clearly and in writing.

1. Can I see your liability insurance certificate and a current WSIB clearance?
2. Who will do the plumbing and electrical work, and what licences do they hold?
3. Are your installers your own staff, or do you use subcontractors?
4. Can you give me an itemized quote, including permits, disposal and HST?
5. Which permits does my project need, and will you apply for them?
6. What is the day-by-day schedule, and what could delay it?
7. How do you waterproof the shower area?
8. What warranty do you give on workmanship, and what does it cover?
9. How much deposit do you need, and how are the remaining payments scheduled?
10. Can I see or call about two or three bathrooms you finished near me?

Frequently asked questions

How do I find a best bathroom renovation contractor Toronto?
Start with referrals from neighbours and friends who renovated recently, then get at least three itemized quotes. Check each contractor’s insurance and WSIB clearance, ask who does the plumbing and electrical work, and go see or call about two or three finished bathrooms near you before you sign.

How much does a bathroom renovation cost in Toronto?
A full bathroom renovation in Toronto usually costs $15,000 to $40,000 in 2026, and many standard bathrooms land between $20,000 and $30,000. Keeping the toilet, tub and sink in the same spots is the biggest way to save. Moving plumbing or gutting to the studs pushes the price up.

How long does a bathroom renovation take in Toronto?
Most contractors quote two to four weeks for a standard bathroom. Companies that use their own installers can often finish a three-piece bathroom in about a week, because nobody waits for outside trades. Permits, hidden water damage and custom glass orders can add time.

Do I need a permit to renovate a bathroom in Toronto?
Not if you only replace fixtures in the same spot. You usually need a permit if you move or add plumbing, change walls or alter the structure. Electrical changes need an ESA permit. A good contractor tells you which permits apply and handles the application.

How much deposit should I pay a contractor in Ontario?
Keep it small. Ontario has advised homeowners to put down no more than 10% and to avoid cash deals. Pay the rest in stages tied to finished work, such as demolition done or tile complete, and keep the final payment until you’ve inspected the bathroom.

What if my contractor takes the deposit and disappears?
Put your complaint in writing to the contractor first, keeping copies of the contract, receipts and messages. If that fails, you can file a complaint with Consumer Protection Ontario or take the matter to small claims court. A written contract, a small deposit and staged payments are the best protection before anything goes wrong.

Can I stay at home during a bathroom renovation?
Yes, most people do. If it’s your only bathroom, ask exactly how many days it will be out of use and plan around that. A good crew seals off the work area, controls dust and cleans up at the end of each day.

Should I hire a general contractor or separate trades myself?
Hiring a plumber, electrician and tiler yourself can cost less, but you take on the scheduling, the permits and the risk if one trade blames another. One contractor responsible for the whole job is simpler, and one with in-house installers usually finishes faster.

Do bathroom contractors in Ontario need a licence?
There’s no single provincial licence for general renovation contractors in Ontario. Electrical contracting does need an ESA licence, and plumbing is a regulated trade. Ask who holds those qualifications on your job and whether those people will be doing the work.

What warranty should a bathroom renovation come with?
Ask for a written workmanship warranty and read what it covers, especially leaks and tile. Ontario’s consumer law also says home renovation work must be of reasonably acceptable quality, whatever the contract says.

Can I cancel a renovation contract in Ontario?
If you signed the contract at home, you generally have 10 days to cancel without a fee. You may also be able to cancel if work doesn’t start within 30 days of the promised start date.

What’s different about renovating a condo bathroom in Toronto?
Condo work needs approval from management before it starts. Expect rules on working hours, elevator bookings and proof of insurance. Shared plumbing stacks mean the layout usually stays where it is, so check what your building allows before you plan any changes.

How One Stop Bath measures up

Use these checks on any contractor, including us. Here is how One Stop Bath, a bathroom renovation company serving homeowners across the GTA, answers the same four checks.

Insurance and coverage. One Stop Bath is fully insured and WSIB covered. Ask to see proof of both at your estimate, as you should with any contractor.

An itemized quote. Every estimate is free and done in your home. You get an itemized written quote that names the fixtures and the timeline before any work starts, and every project comes with a written warranty of one to five years, depending on the materials and the job.

A realistic timeline. Where many Toronto contractors quote two to four weeks, One Stop Bath completes a standard three-piece bathroom in four to five days, and a tub-to-shower conversion in three to four. That speed comes from using our own licensed installers rather than subcontractors. You can see what’s included in a full bathroom renovation in Toronto completed in four to five days.

Local work you can see. One Stop Bath has been renovating bathrooms across the GTA for over 20 years and holds a BBB A+ rating. Ask to see finished bathrooms near you.

Ready to compare? Book your free in-home bathroom renovation estimate. Call now: 647-507-0758.