What Is the Ontario Condominium Act? What Condo Buyers Need To Know

Buying a condo is a little different from buying almost anything else you’ll ever own. You get a legal unit that’s entirely yours, with your own front door and your own expectation of privacy. But you also become part-owner of an entire building, sharing its hallways, its amenities, its security, and its decisions with everyone else who lives there.

That balance between privacy and community isn’t just a lifestyle choice. It’s written into law. In Ontario, that law is called the Condominium Act, and whether you’re buying your first home, downsizing, or buying a condo for investment, the condo act shapes almost everything from the purchase, to your day-to-day living.

It’s this highly refined act that makes condo living so attractive in Ontario, and why the alternatives (like cooperatives and co-ownership models) bring in significantly less attention, and usually sell for a large discount in comparison. Read about co-operatives and co-ownership properties here. 

 

What Is the Ontario Condominium Act?

The Condominium Act is the provincial legislation that governs how condominiums are created, run, financed, and managed in Ontario. It sets out the rights and responsibilities of unit owners, the powers and obligations of condo corporations and their boards, and the rules around everything from reserve funds, to status certificates, to dispute resolution.

Think of it as the foundation everything else is built on. Every condo building’s declaration, bylaws, and rules have to operate within what the Act allows. A board of directors can’t simply decide to ignore a section of the Act because it’s inconvenient, and neither can an individual owner.

In 2017, the province updated the condo governance system significantly, creating the Condominium Authority of Ontario to oversee condo corporations and provide resources for owners and buyers, along with a tribunal for resolving certain types of disputes without going to court.

If you’re buying a condo today, this is the modern framework that will impact every part of your transaction: the Condominium authority’s guidance starts with the documents you receive when placing an offer on a property, in the form of the status certificate; and, the condo authority will govern how the rules and bylaws in your condo impact your ownership and day-to-day life.

 

Why the Act Matters to You as a Buyer

When you buy a condo, you’re really buying two things at once, and the Act defines them both.

First, you’re buying a legal unit. This is the physical space within your unit’s boundaries, typically the interior walls, floors, and ceiling, registered on title in your name just like a house would be. It’s yours, and the Act protects your right to use and enjoy it. Since it’s legally yours, you can then get a traditional mortgage from a bank. In apartments that are not condominium owned (like co-operative buildings), financing becomes significantly tricker, and banks often require a significant downpayment, and they usually impose a higher interest rate too.

Second, you’re buying a proportionate share in the common elements of the entire building. This includes the hallways, elevators, lobby, roof, mechanical systems, amenity spaces, and often the exterior structure itself. You don’t own a specific piece of the parking garage or the gym; You own a percentage interest in all of it, shared with every other owner in the building.

This dual ownership structure is exactly why condo living is often described as a blend of privacy and communal living. Your unit is yours, with a genuine expectation of privacy behind your own door. But the building around it is a shared entity, governed collectively, and the Act sets the rules for how that collective decision-making actually works.

 

The Hierarchy of Governing Documents

Every condo building operates under a layered set of rules, and understanding the hierarchy helps explain why some things are harder to change than others.

1. The Condominium Act itself. The provincial law that sets the outer boundaries for everything else. No declaration, bylaw, or rule can contradict it.
2. The declaration. The building’s foundational document, registered on title, that defines the units, common elements, each owner’s proportionate share, and how expenses are divided. Changing the declaration typically requires a high threshold of owner approval, often 80 to 90%, because it’s meant to be stable.
3. The bylaws. Rules covering the corporation’s governance, like how the board is elected, how meetings are run, and financial procedures. Bylaws require owner approval to change, though usually a lower threshold than the declaration.
4. The rules. Day-to-day policies covering things like pet restrictions, noise, parking, and use of amenities. Rules can generally be created or changed by the board alone, provided they’re reasonable and don’t conflict with the declaration or bylaws.

While the declaration and the bylaws rarely change, the rules are amended as the board sees fit. Rules can change with the tides of the fads in our city… for example, when Airbnb showed up, some boards created a rule to ban short-term rentals. The same power can give the board the power to adjust the hours of the gym, or the hours of the concierge, because the rules can help them balance the safety of the building as necessary.

All four governing bodies must be followed, and sometimes the rules can seem an overstep. For example, most condos require your window coverings have a neutral backing, so that the building can have a nice, uniform appearance from the street; however, there are some buildings where the condo board rules mandate black, or red, curtains, which limit you severely when choosing window coverings. Even though a rule seems arbitrary, the board has the power to enforce it through fines, levies, and back-charged legal fees.

 

Your Private Unit: What the Act Protects

Inside your own unit, the Act generally protects your right to quiet enjoyment of your space. You can decorate, live, and use your unit as you see fit, within the limits set by the corporation’s declaration, bylaws, and rules. Boards can’t enter your unit without proper notice except in genuine emergencies, and they can’t make arbitrary decisions that single you out unfairly compared to other owners.

That said, “private” doesn’t mean “unrestricted.” Because your unit sits inside a shared building, some rules that feel personal, like renovation approvals, flooring requirements for sound transmission, or restrictions on short-term rentals, exist specifically because your choices inside your unit can affect everyone else living around you.

When my condo flooded, the condo board was one of the many parties I had to coordinate my repairs with. The condo board requires a list of trades, their business registration, and their WSIB, essentially limiting unit owners from hiring unlicensed trades. The condo board also had the final decision on the materials being used inside my renovation. They wanted to ensure the subfloor met or exceeded a soundproof rating set out in our bylaw, and there is absolutely no grey zone here… it either meets/exceeds the soundproof rating, or it must be rejected.

 

The Common Elements: Where Community Governance Takes Over

Everything outside your unit’s boundaries is generally a common element, and this is where the communal side of condo ownership really shows up. The Act requires that common elements be maintained and repaired by the condo corporation, funded collectively through everyone’s monthly fees.

This is also where governance comes in. Decisions about the common elements, from routine maintenance to major capital repairs to amenity policies, aren’t made by any single owner. They’re made by the corporation, typically through an elected board of directors, following processes the Act lays out.

For buyers coming from house ownership, this is often the biggest mental shift. In a house, you decide when the roof gets replaced and how much you spend on it. In a condo, that decision belongs to the board, guided by the reserve fund study and the Act’s requirements, and you’re bound by it whether or not you personally agree with the timing or the cost.

 

Boards, Voting, and Why Your Voice Matters

The Act requires every condo corporation to have a board of directors, elected by the owners, responsible for managing the corporation’s finances, maintenance, and overall operations. As an owner, you get a vote. Some condos give owner-occupants more voting share compared to owner-investors, since the occupants are more impacted by the decisions of the board.

This is one of the most important things for first-time condo buyers to understand: you’re not just buying a home, you’re joining a small democracy. The board makes day-to-day decisions on your behalf, but you have a genuine voice in electing who sits on that board, and a vote on major changes to the declaration or bylaws.

Many owners never attend an annual general meeting or read the minutes. That’s a missed opportunity. The board’s decisions directly affect your monthly fees, your building’s reserve fund health, and ultimately your unit’s resale value.

 

Why This Matters to First-Time Buyers

If you’ve never owned a condo before, the biggest adjustment is accepting that you’re bound by collective decisions, not just your own. Before you buy, the Act is also what gives you the right to request and review a status certificate, the document that shows you exactly how the corporation is being run before you commit. For a full breakdown of that process, see our complete guide to condo status certificates.

Understanding the Act also helps explain why some fees and restrictions exist in the first place. They’re not arbitrary. They’re the mechanism by which a shared building stays financially healthy and functions smoothly for everyone living in it.

 

Why This Matters to Downsizers

If you’re moving from decades of house ownership into a condo, the shift from full control to shared governance is often the biggest emotional adjustment, more than the smaller square footage. You’re trading full responsibility for maintenance and repairs for a system where those decisions are made collectively, funded through your monthly fees.

For many downsizers, this trade genuinely works in their favour. You’re no longer the one calling a roofer or budgeting for a new furnace. But it does mean trusting a board and a governance process you didn’t build yourself, which is exactly why reviewing a building’s financial health and governance track record matters so much before you buy.

We find many retirees, or downsizers, usually aim to move into established buildings, with larger units, and a more mature demographic (compared to the new buildings with 70% 1-bedroom units that attract investors and tenants).

Read our guide for condo buying for the 65+.

 

Why This Matters to Investors

If you’re buying a condo as a rental property, the Act is directly relevant to what you can and can’t do with your unit. Rental restrictions, if any exist, are typically set out in the declaration, which means they carry real legal weight and can’t simply be ignored. Some buildings cap the percentage of units that can be rented at any given time, while others prohibit short-term rentals.

The Act also requires that landlords work with their tenants to follow the condos bylaws and rules. If the condo prohibits dogs, the landlord should ensure their tenant does not own dogs.

It is best practice to provide tenants a copy of the bylaw and rules before signing a firm offer. That way you, as a landlord, have fulfilled your legal obligations.

 

Dispute Resolution: What Happens When Something Goes Wrong

Since 2017, Ontario has had a dedicated tribunal, part of the Condominium Authority of Ontario, that handles certain types of condo disputes without requiring a full court case. This currently covers specific categories of disagreements, including issues around pets, parking, storage, and nuisance complaints like noise or smoke.

For more serious or complex disputes, particularly those involving larger financial claims or governance disagreements, matters may still need to go through the courts. Knowing this system exists is useful context before you buy, since it shapes how conflicts within your building are actually likely to get resolved.

 

The Bottom Line

A condo purchase is genuinely two things at once: your own private legal unit, protected by real ownership rights, and a share in a communal entity governed by a set of rules designed to keep a shared building running well for everyone in it. The Condominium Act is what makes that balance work, and understanding even the basics of it will change how you view condos.

Whether you’re buying your first condo, adding an investment property to your portfolio, or trading a house full of memories for a lower-maintenance lifestyle, the Act is worth understanding before you sign anything, not after. The act gives the condo you’re moving into, significant power to impose rules and regulations that directly impact your lifestyle. If your board prohibits anyone owning more than 2 pets, or dogs over 25-lbs, those are enforceable rules, and ignoring them can lead to significant financial consequences.