The Agreement of Purchase and Sale — commonly called the APS — is the legal contract that governs every real estate transaction in Ontario. It is the document that turns a verbal agreement into a binding commitment, and every term in it has legal implications. Most buyers and sellers sign one without having read a previous version, often under time pressure, and with imperfect understanding of what they are agreeing to.

This post explains what the APS is, what its key components cover, and what to pay attention to before you sign.

What the Agreement of Purchase and Sale Actually Is

The APS is a standardised form developed by the Ontario Real Estate Association (OREA) that is used in virtually all residential real estate transactions in the province. It is a legally binding contract between a buyer and a seller that sets out the terms under which the property will be transferred — the purchase price, the closing date, what is included in the sale, and any conditions that must be satisfied before the deal becomes firm.

Different versions of the APS exist for different types of transactions. The residential APS is used for single-family homes, semi-detached properties, and freehold townhouses. A separate condominium APS is used for condo purchases and includes additional provisions specific to condo ownership — status certificate review periods, occupancy fees for new builds, and condo-specific representations. Commercial transactions use their own form, as does the sale of a business.

For most Hamilton buyers and sellers, the residential APS and the condominium APS are the two relevant documents. The fundamental structure is similar — the key differences lie in the condo-specific provisions that reflect the additional due diligence required in a condominium purchase.

The Key Components of a Residential APS

The APS covers a significant amount of ground. Here are the components that matter most.

The purchase price and deposit are the opening terms. The purchase price is the agreed amount the buyer will pay. The deposit — a portion of the purchase price paid upon acceptance of the offer, held in trust — is also specified here, along with the timeline for delivering it. As discussed in more detail in the deposit explainer on this site, the deposit is cashed immediately upon acceptance and held in the listing brokerage’s trust account until closing.

The closing date is the date on which ownership transfers, funds move, and the buyer receives keys. It is negotiable between the parties and should reflect both the buyer’s financing timeline and the seller’s moving plans. A closing date that is too tight creates stress on both sides; one that is too far out can create financing complications if rate holds expire.

Inclusions and exclusions specify what is and is not part of the sale. In Ontario, fixtures — items attached to the property — are generally included in the sale unless specifically excluded. Chattels — moveable items — are generally excluded unless specifically included. Disputes about what was supposed to be included are one of the most common sources of post-closing friction, and the APS is the place to resolve them clearly before closing. If the sellers’ light fixtures, appliances, window coverings, or garage door openers matter to you, they need to be listed explicitly.

Representations and warranties are the seller’s legal statements about the property — that they have the right to sell it, that it will be in the same condition on closing as when the offer was accepted, and other material facts. Sellers are legally obligated to disclose known material latent defects — issues that are not visible on inspection and that affect the property’s value or habitability. Patent defects — visible issues — are the buyer’s responsibility to identify during the inspection process.

Conditions are among the most important provisions in the APS. A condition makes the deal contingent on a specific outcome — typically financing approval or a satisfactory home inspection. If the condition is not met within the specified timeframe, the buyer can walk away and recover their deposit. Conditions can also cover other things: a satisfactory status certificate review for a condo purchase, the sale of the buyer’s existing home, or verification of specific property details. Once conditions are waived in writing, the deal becomes firm and the deposit is generally at risk if the buyer does not proceed.

The irrevocability period is the window during which the offer cannot be withdrawn by the party who made it. When a buyer makes an offer, they set an irrevocability time — often 24 to 48 hours — during which the seller can accept, reject, or counter. If the seller counters, a new irrevocability period begins on the counteroffer. Understanding this timing is important in multiple offer situations where speed matters.

What to Watch For Before You Sign

A few things consistently catch buyers and sellers off guard in the APS that are worth knowing in advance.

Read the inclusions and exclusions carefully and do not assume. If you walked through the home and the dining room chandelier was there, that does not mean it is included in the sale. If you want it, it needs to be listed. Sellers who plan to take specific fixtures or appliances should exclude them explicitly — failing to do so and then removing them before closing can result in a legal dispute.

Understand your conditions fully before you waive them. This sounds obvious but it is one of the most common mistakes in competitive markets. Buyers who waive financing conditions without rock-solid pre-approval, or waive inspection conditions without truly understanding the risk they are accepting, sometimes find themselves committed to a purchase they cannot complete or one that comes with unexpected costs. Each condition exists for a reason. The decision to waive it should be deliberate and informed.

Closing adjustments are handled outside the APS itself but affect your final numbers at closing. Property tax, utilities, and condo fees are prorated between buyer and seller as of the closing date. Your lawyer handles these calculations, but knowing they exist means you will not be surprised when the final closing figures differ slightly from the purchase price.

Amendment to Agreement of Purchase and Sale — often called a Schedule B or an amendment form — can be used to modify terms after the original APS is signed. If circumstances change between offer acceptance and closing, any agreed modifications need to be documented in writing and signed by both parties. Verbal agreements to change closing dates, inclusions, or other terms are not enforceable.

The APS is a legal document and the stakes are significant. Frank reviews every offer and counteroffer in detail with his clients before anything is signed — both to ensure they understand what they are agreeing to and to identify any terms that need to be clarified or negotiated before the deal moves forward.

If you are thinking about buying or selling in Hamilton and want to understand how the offer process works before you are in the middle of it, reach out directly.

Call or text: 905-730-2747