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What Real Estate Lawyers Do in an Ontario Purchase or Sale

A step-by-step look at what a real estate lawyer does in an Ontario purchase or sale, from agreement review and title search to funds and closing day.

Real Estate4 min readTSLBy the Treadstone Law Team · OntarioUpdated November 13, 2026
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Key takeaways
  • A lawyer's work runs from reviewing the agreement through title search, handling funds, registration and closing day.
  • Most transfers of title must be signed for completeness by a lawyer, and generally by two different lawyers.
  • Ontario land transfer tax is payable when the transfer is registered, which happens on closing.

If you are buying or selling a home for the first time, the legal side can feel like a black box. You sign an agreement, and weeks later the keys change hands. A lot of work happens in between, much of it handled by lawyers on each side.

This article walks through the usual steps in order. Every deal is different, so treat it as a general map and ask your own lawyer how your transaction will run.

Step 1: Reviewing the agreement

Ideally you speak to a lawyer before you sign, or before the agreement becomes firm. The lawyer reads the conditions, closing date, what is included in the sale and any special terms. For a buyer with a financing or home-sale condition, that review matters because a conditional offer does not bind the seller and first buyer until every condition has been fulfilled or waived.

Deposits come up early. A deposit received by the brokerage that is to hold it under the agreement must be put into that brokerage's real estate trust account within five business days of receipt. If a deal fails, the brokerage should release the deposit only under a release or direction signed by all parties, or under a court direction.

Step 2: Title search and legal checks

For a buyer, the lawyer searches title to confirm who the registered owner is and what is registered against the property, such as mortgages or liens. For a seller, the lawyer identifies what must be paid out and discharged on closing, such as an existing mortgage.

Other debts can also show up against a property. For example, a municipal treasurer may register a tax arrears certificate if part of the tax arrears is still owing on January 1 in the second year after the year the taxes became owing. Problems found on title are raised with the other side so they can be fixed before closing.

Step 3: Funds, trust accounts and taxes

Your lawyer will explain how much you need to bring to closing, including land transfer tax and legal costs, and will prepare a statement showing the adjustments between buyer and seller. Land transfer tax is generally based on the purchase price plus any mortgage or debt assumed.

Some buyers pay less or more tax. Eligible first-time homebuyers can get a refund of up to $4,000 for registrations on or after January 1, 2017, which may be claimed at registration or later from the Ministry of Finance. Foreign nationals, foreign corporations and taxable trustees buying residential property in Ontario pay the Non-Resident Speculation Tax at 25 per cent, in addition to land transfer tax.

Lawyers hold closing money in trust. If trust funds held for a real estate closing are lost, the Law Society's Compensation Fund typically pays, but it is a last resort and you must first try to recover the loss from the lawyer or paralegal and from other sources.

Step 4: Registration and closing day

In Ontario's electronic land registration system, only a lawyer may sign for completeness of a document that requires compliance with law statements, and most transfers of title contain them. Non-lawyers may sign these documents for release only.

SituationWho signs for completeness
Most transfers of titleTwo different lawyers, one for the transferor and one for the transferee
Some family, related-party or remote-community transfersOne lawyer may act for both sides, under the Law Society's professional standards

On closing day, the lawyers exchange documents and funds as agreed and register the transfer. Land transfer tax is payable when the transfer is registered, which happens on closing. Once registration is complete, the buyer's lawyer reports to the buyer and the seller's lawyer pays out the amounts owing from the sale proceeds.

What to do next

Frequently asked questions

Do I need a lawyer to buy or sell a home in Ontario?

Most transfers of title must be signed for completeness by a lawyer, because most contain compliance with law statements that only a lawyer may sign for completeness.

Will the same lawyer act for me and the other side?

Generally, no. A transfer of title must usually be signed for completeness by two different lawyers, one for each side. Some transfers, such as those within a family or between related parties, may be completed by one lawyer acting for both.

When do I pay land transfer tax?

Land transfer tax is payable when the transfer is registered, which happens on closing. Your lawyer will include it in the closing figures.

What happens to my deposit if the deal falls through?

The brokerage should release the deposit only under a release or direction signed by all parties to the agreement, or under a court direction. A lawyer can explain your options if the buyer and seller disagree.

Sources

Links go to official government, court and regulator pages. The law changes — confirm you are reading the current version.

This article is general information, not legal advice. Reading it does not create a lawyer-client relationship. Ontario laws, tax rates, and government programs change, and how the law applies depends on your specific facts. For advice about your situation, speak with a licensed Ontario lawyer. Treadstone Law is licensed by the Law Society of Ontario — reach us at 1-844-900-1070 or start a file online.

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