Condo Renovation in Toronto

Renovating a condominium is not a smaller version of renovating a house. It is a different project with a different set of constraints — and most of them have nothing to do with construction.

You are working inside a building that belongs to a corporation, under rules written by that corporation, with approvals that take time and conditions that are not negotiable. The walls you can see are not necessarily the boundary of what you own. The pipes behind them almost certainly are not yours. And the day your trades can carry material up to the unit is set by somebody else’s calendar.

None of that makes a condo renovation difficult. It makes it a project where the sequence starts earlier and the research matters more. The general planning sequence for any renovation is set out in how to plan a home renovation in Toronto. This guide covers the layer that sits on top of it when the home is a unit in a building.

What you actually own

This is the first thing to establish and the thing most owners get wrong — the intuitive answer is simply not the correct one.

A condominium is divided into units and common elements. Your unit is defined by the declaration registered against the building, and that definition often places the boundary at the unfinished surface of the concrete, or at the centre of a wall, rather than at the painted surface you can see. Everything beyond that boundary is common element, whether or not it sits inside your front door.

Things commonly outside the unit, even though they appear to be inside it: windows and window frames, exterior doors, balconies and terraces, the concrete slab, load-bearing walls, plumbing risers and stacks, and the building’s mechanical and electrical distribution. Many buildings also designate parts of the heating and cooling equipment as common element even though it sits in a closet in your unit.

Many condominiums also have a standard unit bylaw, which describes what the corporation’s insurance treats as the base condition of a unit. Anything you add beyond that becomes an improvement you are responsible for insuring. It matters more than it sounds: if a pipe upstairs fails and damages your unit, the standard unit definition is part of what determines who pays for what.

Get three documents before designing anything: the declaration, the rules, and the renovation or alteration package from property management. They are the actual brief.

Approval is a project phase, not paperwork

Treating the building’s approval as an administrative step to be handled later is the single most common scheduling mistake in condo work.

What the building will ask for

Requirements vary between corporations, but the package is usually recognisable.

• A completed alteration or renovation application.
• Drawings showing what is being changed, sometimes requiring a professional seal where anything structural, mechanical or plumbing-related is involved.
• A scope of work and a schedule.
• Contractor details, including a certificate of liability insurance naming the corporation, and a valid WSIB clearance certificate.
• Product documentation, most often the sound rating for flooring underlay.
• A refundable damage deposit.
• Confirmation of the municipal building permit where one is required.

The insurance limit and the deposit amount are set by the building, not by convention, so take both from your own corporation’s package rather than assuming.

How long it takes

Longer than people expect, and the reason is structural rather than bureaucratic. Property management reviews the application, but approval often rests with the board, and boards meet on a schedule. A submission that arrives the week after a meeting waits for the next one. Where drawings need revision, the cycle repeats.

Ask two questions at the start: how often does the board meet, and what is the submission cut-off. Those two answers convert an indefinite wait into a date you can plan around, and they usually mean starting the approval process before the design is fully resolved rather than after.

When the work touches common elements

Where an alteration affects the common elements, Ontario’s Condominium Act requires more than an approval letter. Section 98 of the Act sets out the conditions under which an owner may alter, add to or improve the common elements: the board has to approve it by resolution, it cannot be contrary to the declaration or the building’s governing documents, and the owner enters into a written agreement with the corporation.

That agreement, usually called a section 98 agreement, is registered on title to the unit and sets out who owns the alteration and who is responsible for repairing, maintaining and insuring it going forward. It travels with the unit, which means it becomes something a future buyer’s lawyer reads.

Boards are not obliged to approve alterations to common elements, though they are expected to act reasonably. And where work has gone ahead without approval, a corporation can require the unit to be put back as it was. That is the real risk of proceeding informally, and it is worth understanding before anyone starts demolition.

What usually cannot change

Some of the most common renovation ambitions run straight into the building. Knowing which ones early saves designing a scheme that cannot be built.

Plumbing stacks and risers

The vertical pipes serving every unit above and below you run in shafts, and they do not move. Nor, generally, does the point at which your unit connects to them.

This is the constraint that most often limits a condo kitchen or bathroom layout. Moving a toilet any distance means moving its drain, and below a concrete slab there is nowhere for that drain to go. Fixtures can usually be shifted a little within the existing arrangement, and sometimes a wall can be built out to conceal a rerouted branch, but the stack itself is fixed. Any layout that assumes otherwise should be tested with a plumber who has worked in the building type before it is drawn up.

Windows, doors and anything on the outside

Windows, window frames, balcony doors and the suite entry door are almost always common elements. Replacing or altering them is the corporation’s decision, not yours, and uniformity of appearance from outside the building is usually a condition in the declaration. The same applies to anything visible on a balcony.

A practical consequence: if the windows are poor, that is a building matter rather than a renovation item, and planning a scheme around replacing them is usually a mistake.

Structure

Concrete shear walls, columns and slabs are structural and are not touched. Not a doorway, not a service penetration, not a recessed niche. Core drilling through a slab is occasionally permitted for a specific purpose, and where it is, it involves scanning, engineering sign-off and the corporation’s approval.

Interior partitions that are not structural can often be removed, which is what makes opening a kitchen to a living area feasible in many units. Establishing which walls are which is an early question for an engineer or the building’s drawings rather than a guess based on thickness.

Heating, cooling and venting

Most towers condition units with fan coil units connected to central building systems. That equipment is often partly common element, its location is fixed, and its capacity is what it is. Replacing it, relocating it or adding to it is a building conversation.

New penetrations through an exterior wall are generally not permitted, which has a direct consequence in kitchens: a ducted range hood venting outside is usually unavailable, and recirculating extraction is the norm. Bathroom exhaust ties into the building’s system rather than a new duct of your own. Both are worth knowing before appliances are chosen, because the choice narrows considerably.

Flooring, and the rule that catches everyone

If one condo requirement is going to surprise you, it is this one.

Almost every corporation in the region sets a minimum sound performance for any new floor, expressed as an impact rating that measures how well the assembly stops footfall noise reaching the unit below. Buildings commonly require an assembly rated at 55 or better, and some newer towers set the bar higher. The rating belongs to the whole assembly rather than the visible floor, so it is the underlay that does most of the work.

Three things follow. The underlay has to be a specific tested product rather than a generic foam, and it has to be installed as its manufacturer specifies, since an untested substitution voids the rating. Documentation for it usually has to be submitted with the application. And carpet, which most buildings originally had, performs far better than anything hard, which is why replacing carpet with wood or tile is the change boards scrutinise most closely.

Two further practicalities. The assembly adds height, which affects door clearances and thresholds, so it belongs in the design rather than being discovered at installation. And the rating achieved in a laboratory is not what a real floor delivers in a real building, so a requirement met exactly on paper can still produce complaints from below. Where quiet matters, exceeding the minimum is usually money well spent.

Bathrooms, and the unit below

In a house, a bathroom leak is your problem. In a condo it is your problem and your neighbour’s, and the exposure is what drives how carefully this work should be specified.

Waterproofing behind tile is not optional and is not the same thing as tile and grout. The approach to it, along with what sits behind a wet wall, is covered in what to ask a bathroom renovation contractor. What changes in a condo is the consequence of getting it wrong, and the fact that the corporation’s insurance, your unit’s standard unit definition and your own policy all become relevant at once.

Layout is constrained by the stack, as above. Where a building permits it, a shower can sometimes be moved further than a toilet, because a shower drain has more routing flexibility within a raised floor than a soil connection does. Whether that is available depends on slab depth and on what the building allows, so it is a question to ask rather than an assumption to build on.

Kitchens in a condo

Kitchens are the most commonly renovated space in a condo and the one where the building’s constraints bite hardest.

Extraction is the first limit, as above: usually recirculating, which affects hood choice and means filters rather than ductwork. The sink stays close to its existing drain. Appliance choice is constrained by available electrical capacity and by the physical route into the unit, which matters more than it sounds when an appliance has to travel in a service elevator and around a corridor corner. Gas is uncommon in newer towers, so induction or electric is often the only option regardless of preference.

What condos reward is storage design, because floor area is limited and every cabinet has to earn its place. The decisions behind that are covered in the complete guide to custom cabinets and built-in storage, and the specific problem of getting storage into tight rooms in built-in storage for small rooms. For the broader question of planning a kitchen project, what to plan first in a kitchen renovation covers the sequence.

One detail specific to towers: millwork has to fit in the elevator. A tall unit built as a single piece may be impossible to deliver, which makes sectional construction and on-site assembly a design consideration rather than a manufacturing one. Raise it with the cabinetmaker early, because it changes how the run is drawn.

Electrical capacity

Condo panels are sized for the unit as built, and there is usually no possibility of increasing the supply, because the building’s distribution was designed for the whole tower.

What that means practically: the number of circuits available is finite, and adding an induction cooktop, a wall oven, heated floors and a car charger is not simply a matter of asking. Establish the panel’s capacity and physical space before specifying anything with a significant load, and expect some choices to be mutually exclusive.

Regulated electrical work is completed by qualified independent licensed and insured trades, coordinated as part of the project rather than performed in-house; selecting that trade is covered in our guide to choosing an electrician in Ontario. In a condo there is an extra layer, because the building may require notice before any work affecting its systems and may have its own list of approved trades.

Water shut-offs

A small item — with a disproportionate effect on the schedule.

Newer buildings often have isolation valves within the unit, which makes plumbing work straightforward. Older buildings frequently do not, and shutting off water for your unit means shutting down a riser serving a column of units, which has to be booked, notified to everyone affected, and carried out in a fixed window.

Find out which situation applies at the survey stage, not on the day. Where a riser shutdown is needed, the number of shutdowns the building will permit for one renovation is a real constraint, and it changes how the plumbing work is sequenced: everything that needs water off gets grouped into as few windows as possible.

Logistics: the part that decides the programme

In a house, a trade arrives and starts. In a building, getting people and material to the unit is itself a scheduled activity.

• Elevator booking. The service elevator is shared, booked in advance in defined windows, and often unavailable at weekends or peak hours. Deliveries and waste removal both compete for it.
• Working hours. Buildings set their own, usually narrower than a municipal noise bylaw would allow, and noisy work is often restricted further within them.
• Access route. A designated service entrance, a loading bay with a time limit, corridor and elevator protection, and sometimes a requirement that a concierge or superintendent be present.
• Waste. Construction waste cannot go down a chute or into building bins. It leaves in the elevator and off the property, which is a labour item on a high floor.
• Parking. Trades may have nowhere to park. This affects pricing and punctuality more than people expect.
• Dust and noise for neighbours. Shared walls and a shared corridor mean complaints reach management quickly. Sealed doorways, corridor protection and daily clean-up are not optional niceties.

Collectively these are why a condo project of a given size takes longer than the same work in a house. A trade that could work a ten-hour day in a house may get six usable hours in a tower, and a delivery that would take an hour becomes a booked half-day.

Insurance, WSIB and the deposit

Buildings are strict here for a good reason: a contractor working in a unit can damage common elements and other people’s homes.

Expect the corporation to require a certificate of commercial general liability insurance at a limit the building specifies, usually naming the corporation as an additional insured, and a valid WSIB clearance certificate. The clearance matters to you personally, not just to the building: where a worker is injured and the contractor is not covered, the exposure can reach the person who engaged them.

A refundable damage deposit is standard, held against damage to common elements and returned after an inspection at completion. Two things follow. Photograph the corridor, elevator lobby and service route before work starts, because that record is what settles any dispute about pre-existing damage. And tell your own insurer what you are doing, since a renovation changes the improvements in your unit and may change what your policy should cover.

The building’s approval is not a permit

These get conflated constantly, and they are entirely separate.

The corporation’s approval is a private matter between you and the building. A municipal building permit is a legal requirement that applies according to what is being built, and in a condominium it is typically triggered by removing or adding walls, altering plumbing, or other work the municipality treats as requiring review. Many buildings will not release approval without seeing the permit where one is needed, so the two processes run in parallel rather than in sequence.

Which permits apply is answered by the municipality the building sits in rather than by the corporation or by a general rule, and it is worth establishing at the outset who is responsible for applying.

Why the same work costs differently in a tower

Owners comparing a condo quote against what a friend paid for similar work in a house often conclude the condo number is inflated. Usually it is not. The scope is genuinely different, and the differences are mostly invisible on a finishes list.

• Productive hours. Restricted working hours and booked elevator access mean fewer usable hours per trade per day. The same labour takes more calendar days, and calendar days cost money.
• Material handling. Everything arrives and leaves through a booked lift. Waste is carried out rather than tipped into a skip on a driveway, which on a high floor is a real labour line.
• Protection. Corridor and lift protection, sealed doorways and daily clean-up are conditions of working in the building rather than optional care.
• Documentation. Drawings sometimes need a professional seal, and preparing the corporation’s application package is work somebody does.
• Constrained solutions. A layout that must respect a fixed stack, or millwork built in sections to fit a lift, is not the cheapest way to build that thing. It is the only way to build it here.

None of this means a condo quote should go unchallenged. It means the useful comparison is between two condo quotes for the same building, and that a quote which ignores these realities is more likely to be optimistic than competitive.

Living there while it happens

In a house you can usually retreat to another part of it. In a one or two-bedroom unit there is nowhere to retreat to.

Decide honestly whether staying is realistic. A bathroom renovation in a unit with only one bathroom is not a live-in project. A kitchen without water or a cooker for several weeks in a small space is harder than the same thing in a house with a basement and a barbecue. If you are staying, settle three things early: what you will cook on and where it will sit, what has to leave the unit entirely because there is nowhere dust-free to put it, and whether off-site storage is needed, since a unit has no garage to absorb the overflow.

Pets and working from home both push the answer towards moving out for the noisy phase. Building working hours mean the disruption is concentrated into the middle of the day, which is precisely when someone working from home needs quiet.

Choosing a contractor who has done this before

Condo experience is a genuine qualification rather than a marketing line, and it shows in specific ways.

Somebody who works in buildings regularly already has the insurance certificates in the format corporations want, understands that elevator windows drive the programme, prices the labour of carrying waste down rather than into a skip on the drive, protects corridors without being asked, and knows which layout ambitions the stack will refuse. Somebody whose work is all detached housing may be excellent and still lose weeks learning the building.

Worth asking directly: how many condo projects have you completed, in what kind of buildings, and can you handle the corporation’s application package yourself. The last question separates people who have done this from people who have not.

Condos across Toronto and the GTA

Building age changes the constraints more than location does, and the region’s condo stock spans several distinct eras.

Along the Etobicoke waterfront and the newer downtown corridors, towers tend to be recent: in-unit isolation valves, fan coil systems, glass exteriors where nothing on the facade is negotiable, and strict, well-documented renovation procedures. The rules are clear, which makes planning easier, and the sound requirements for flooring are often at the higher end.

Older apartment-style buildings in North York and Scarborough present the opposite profile. Larger units and more generous proportions, but frequently no in-unit shut-offs, older electrical capacity, original cast-iron stacks, and a renovation process that is less formalised. Less paperwork does not mean fewer constraints; it means more of them are discovered on site, which is an argument for a thorough survey before design.

Mississauga spans both, with substantial tower clusters of different vintages, and the practical point is that two buildings a block apart can have entirely different rules. Nothing about a neighbouring building’s process tells you anything reliable about yours.

One thing holds across all of them: the corporation’s own documents govern, and they are specific to the building. Where ZaRRuS works across the region is set out on the service areas pages.

Common mistakes

• Designing before reading the declaration, the rules and the renovation package.
• Assuming everything inside the front door belongs to you.
• Leaving the approval application until the design is finished.
• Not asking when the board meets, then losing weeks to the meeting cycle.
• Altering common elements without approval, which a corporation can require to be reversed.
• Planning a layout that moves a toilet away from the stack.
• Specifying a ducted range hood in a building that does not permit an exterior penetration.
• Choosing flooring before checking the building’s sound requirement.
• Using a generic underlay instead of the specific tested product, which voids the rating.
• Forgetting the floor build-up changes door clearances.
• Specifying appliances the panel cannot support.
• Discovering on the day that a riser shutdown has to be booked.
• Ordering millwork that will not fit in the service elevator.
• Pricing the job as though trades get a full working day.
• No photographs of the corridor and lift lobby before work starts.
• Treating the building’s approval as a substitute for a municipal permit.
• Not telling your own insurer about the improvements.

Questions worth asking

Split between the building and the contractor, because they answer different things.

Ask property management: where is the unit boundary defined, and is there a standard unit bylaw? What does the renovation application require and when does the board next meet? Which trades or work require the corporation’s prior notice? What are the permitted working hours and how is the service elevator booked? Is there an in-unit water shut-off, and if not, how are riser shutdowns arranged and how many will you allow? What is the minimum flooring sound rating and what documentation do you need? What insurance limit and deposit apply?

Ask the contractor: how many condo projects have you completed and in what buildings? Will you prepare the corporation’s application package? Can you supply certificates in the format the building requires? How have you allowed for elevator windows and restricted hours in the schedule? How is waste removed and priced? What corridor and lift protection is included? Has a plumber confirmed the layout against the existing stack? Will the millwork fit in the service elevator?

Frequently asked questions

In short

Start with the documents rather than the drawings. The declaration tells you where your unit ends, the rules tell you what the building permits, and the renovation package tells you what the approval will demand. Reading all three first prevents designing something that cannot be built.

Treat approval as a phase with its own duration, and find out when the board meets. Accept the stack, the facade and the structure as fixed. Check the flooring sound requirement before choosing a floor, the panel before choosing appliances, and the elevator before ordering millwork. Build the schedule around booked access rather than working days.

Almost everything that goes wrong in a condo renovation was knowable at the start, from documents that were available before anyone picked up a pencil.

Renovating a unit in Toronto or the GTA? Our condo renovation page sets out how we handle buildings, approvals and access. The most useful starting point is usually a first conversation with your declaration and the building’s renovation package in hand, before anything is drawn. Our process and selected work pages cover the rest.