Renovating a bathroom in a condo is a different project from renovating one in a house, and the difference has less to do with design than with rules. You own the space inside your unit, but the slab under your feet, the stack behind your toilet and the wall your shower valve sits in are usually shared property. That means paperwork before demolition, logistics most homeowners never think about, and real limits on where fixtures can go. Here is what condo owners across Canada, from Vancouver towers to Prairie mid-rises to Montreal and Halifax buildings, should understand before ordering a single fixture.
Start with your condo documents, not your contractor
Every condo corporation (a strata in BC, a syndicate of co-owners in Quebec) has governing documents that set out what owners can change and how. The terminology and the process vary by province and by building, so no article can tell you exactly what your board requires. What we can tell you is what boards commonly ask for, so you can build it into your plan:
- A written scope of work, often with drawings for anything beyond a like-for-like swap
- An alteration or renovation agreement signed before work starts
- Proof of your contractor's licensing and liability insurance
- Copies of any plumbing or building permits your municipality requires
- Spec sheets for the fixtures you plan to install
- Waterproofing and floor-protection details, especially for shower and tub areas
That last point about spec sheets matters more than people expect. A clean submission package with manufacturer documents tends to move through approval faster than a vague one. If you have never pulled a spec sheet apart, our guide on how to read a plumbing spec sheet before ordering walks through it. Boards often meet monthly, so build several weeks of approval time into your schedule before you book trades.
Working hours, elevators and getting a tub upstairs
Most buildings restrict renovation noise to weekday working hours, and many prohibit it on statutory holidays. Your contractor's quote should assume those windows, because a crew that plans an eight-hour day in a building that allows six will run over budget on labour.
Then there is the elevator. Buildings typically require you to book the service elevator for deliveries and debris removal, sometimes with a deposit against damage to common areas. Before you order a soaker tub or a large vanity, measure the elevator cab, its door opening, and every corridor turn between the loading dock and your unit. Canada-wide fixture shipping generally gets a crated tub to your building, but the last thirty metres are on you and your installer. A freestanding tub that will not make the turn into your bathroom is an expensive lesson.
Wet walls, stacks and slab floors: where plumbing can actually go
Most Canadian condo towers are concrete slab construction. Your drains and supply lines run through shared vertical stacks and a limited number of wet walls, and the slab between you and your downstairs neighbour is a structural element. Moving a toilet or relocating a shower drain usually means cutting or coring that slab, which typically requires an engineer's review and explicit board consent, and in many buildings it is simply not permitted.
The practical rule for condo renovations: keep fixtures where they are and upgrade in place. Before buying a toilet, measure the distance from the finished wall to the drain, since replacing one is far easier when the rough-in matches; our toilet rough-in measuring guide shows how. For showers, choose a base that matches your existing drain location rather than moving the drain. There are enough sizes and drain positions in shower bases that most condo layouts can be matched, and the shower base sizing guide explains how to line up space and drain.
The freestanding tub question
Freestanding tubs are entirely feasible in condos. The catch is the faucet. A floor-mounted tub filler needs its supply lines roughed in through the floor, and in a concrete slab that means chasing or coring concrete, which brings you right back to the structural approvals above. Many condo boards will not allow it, and many owners decide it is not worth the fight.
The condo-friendly answers are a wall-mounted tub filler served from an existing wet wall, or positioning the tub close enough to that wall for a deck-mounted set on a short ledge. Browsing tub fillers with mounting type in mind first, and finish second, will save you a redesign. Weight is the other conversation: an acrylic freestanding bathtub is dramatically lighter than cast iron or stone composite, both empty and full, and some boards ask about filled weight on suspended slabs. Our freestanding bathtub buying guide covers materials and weights in detail.
Fixture choices that suit slab construction
- Wall-mount vanities. A wall-mounted vanity keeps plumbing in the wet wall, leaves shutoffs accessible and makes a small condo bathroom read larger.
- Quiet, efficient toilets. One-piece skirted designs are easy to clean and widely available in the common rough-ins. Wall-hung toilets with in-wall carrier systems, such as those from Geberit, are excellent in condos where the wall can be furred out, and they put nothing on the slab at all.
- Pressure-balanced or thermostatic shower valves. In a building where dozens of units share risers, a proper modern valve protects you from temperature swings when neighbours draw water.
- Soft-close everything. Seats, drawers and sliding shower doors. Concrete transmits impact noise efficiently, and your neighbours will notice the difference.
- Certified fixtures. Look for CSA or cUPC marks on anything that touches water. Canadian inspectors expect them, and boards increasingly ask for proof.
Insurance and the water question
Few things concern a condo board more than water escaping a unit, because a bathroom leak on the twelfth floor can damage several units below it. Your corporation's insurance generally covers common elements and a defined standard unit, while your own policy covers your improvements, and you can be responsible for the corporation's deductible if your renovation causes damage. The exact split varies by province and by your building's documents, so call your insurer before the renovation, confirm your improvements and betterments coverage, and keep every receipt. On the installation side, insist on braided stainless supply lines, accessible shutoff valves and a properly membraned shower. These are inexpensive choices during a renovation and very expensive ones after a claim.
Frequently asked questions
Do I need condo board approval to renovate my bathroom?
For anything beyond paint, mirrors and accessories, assume yes until your documents say otherwise. Any work touching plumbing, waterproofing, or anything inside a wall or floor almost always requires written approval, and starting without it can mean stop-work orders or restoring the space at your cost.
Can I move the toilet or shower drain in a condo?
Rarely, and never casually. Relocating drains in a concrete slab usually requires coring, an engineer's involvement and board consent. Most condo owners get a better result by keeping fixture locations, verifying the rough-in measurements, and spending the budget on better fixtures instead.
Can I install a freestanding tub with a floor-mounted filler?
The tub itself is usually fine. The floor-mounted filler is the problem, since its rough-in runs through the slab. A wall-mounted tub filler from an existing wet wall gives you the same freestanding look without structural work, and it is the route most boards will approve.
Do condo bathroom renovations need a municipal permit?
Plumbing alterations commonly require a permit under provincial codes, which are based on the National Plumbing Code of Canada, but requirements vary by municipality and by scope. A licensed plumber can confirm and pull the permit, and many boards ask for a copy before approving the work.
