What is it?
When you sign for a pre-construction condo or new home, you do not own a home yet. You own the right to buy one. Title passes only at final closing, after the building is finished. Transferring that whole bundle of rights and duties under the contract to someone else before then is called an assignment.
The original buyer is the assignor; the person taking over is the assignee. The assignee steps into the original contract with the builder, pays the builder the balance at final closing and receives title. There is no new contract between the builder and the assignee; only the buyer changes.
The Condominium Authority of Ontario’s guide describes an assignment as a transaction where the buyer of a pre-construction unit transfers their purchase agreement to a new buyer before taking ownership, and says it may be possible before or during interim occupancy.
The builder’s consent and conditions
Assigning is not an automatic right. Whether you can, and on what terms, is set by the original agreement (APS). The CAO guide names builder consent, a fee and the original buyer staying liable for closing as common conditions. Some contracts add others, like the 4th and 5th items below, so check yours.
- The builder’s written consent is required. The builder may refuse, which stops the deal.
- An assignment fee is charged. The amount is in the contract and varies by project. Builders may also ask you to pay their lawyer’s costs.
- The original buyer (assignor) stays liable for closing. If the assignee fails to close, the builder can come after the assignor.
- Advertising limits: some contracts restrict MLS listings or public advertising. Check the contract and get the builder’s written permission before you advertise. An agent’s ad must name the brokerage and be accurate (RECO advertising rules).
- Other conditions can include "only after a certain percentage is sold", "only before interim occupancy", or the assignee passing the builder’s checks.
Section 80 (6) of the Condominium Act lets the builder withhold consent to an assignment of the right to occupy during interim occupancy and charge a reasonable fee for consenting. See "Interim occupancy".
How the money flows
The assignment price usually has two parts. The assignee pays the assignor (1) a reimbursement of the deposits the assignor has already paid to the builder, and (2) the difference between the original price and today’s price, which is the assignor’s profit. The balance owed to the builder stays as it was and is paid by the assignee at final closing.
| Item | Example | Who pays whom |
|---|---|---|
| Original contract price | $600,000 | Assignee → builder (as the balance) |
| Deposits already paid by the assignor (15%) | $90,000 | Assignee → assignor (reimbursement) |
| Assignment price | $680,000 | |
| Assignment profit (680,000 − 600,000) | $80,000 | Assignee → assignor |
| Total the assignee pays the assignor | $170,000 | Timing set by the assignment agreement |
| Balance due to the builder at final closing | $510,000 | Assignee → builder (plus HST and adjustments) |
Illustration only. When the reimbursement and the profit are paid (at signing, at builder consent, at final closing, or split) is negotiated and written into the assignment agreement.
HST applies
Section 192.1 of the federal Excise Tax Act treats the assignment of a new home or condo purchase agreement by anyone other than the builder as a "taxable supply". So HST (13% in Ontario) applies to the assignment price. The section was added by a 2022 amendment (2022, c. 10, s. 52). Under subsection 52 (2) of that amending Act, it applies to assignments made after May 6, 2022, that is, from May 7 on.
There is one relief: if the assignment agreement states in writing that part of the price is a reimbursement of the deposit paid under the original contract, that deposit part is excluded from the HST calculation (section 192.1 (b)). This is why the assignment agreement must separate the deposit reimbursement from the profit. In the example above, HST applies to $80,000, not $170,000, giving $10,400.
Who collects and remits the HST, and how the HST the assignee pays the builder at final closing and the new housing rebate work, depend on each side’s situation. Talk to an accountant before you sign an assignment agreement. See "HST new housing rebate" too.
Income tax: the 365-day flipping rule
Section 12 (13) of the federal Income Tax Act treats a "right to acquire a housing unit" that you held for less than 365 days as a flipped property. The profit is then fully taxed as business income, not as a capital gain (where only part is taxed), and the principal residence exemption cannot be used. Only the exceptions written in the Act, such as death, separation, serious illness or a job relocation, are excluded.
Holding the right for more than 365 days is no guarantee either. If you bought intending to resell, the profit can still be business income on the facts. See "Property flipping rule" and talk to a tax professional before you file.
What the buyer (assignee) should watch
- You inherit the original contract as it is. Read the occupancy dates and critical dates, the closing adjustments (development charges and other levies) and whether they are capped, the interim occupancy fee, the upgrades and every amendment, with your lawyer. If the contract has no cap, you inherit that risk.
- The deposits stay in trust with the builder’s lawyer, but the money you pay the assignor is not trust money. Decide in the assignment agreement how it will be protected (a lawyer’s trust account, payment timing).
- The 10-day cooling-off period under the Condominium Act belongs to the original purchaser who received the disclosure documents from the builder. Ask your lawyer whether you, as assignee, have any similar right under your agreement.
- At final closing you pay the land transfer tax (plus Toronto’s municipal tax in Toronto), HST, the closing adjustments and legal fees. Ask your lawyer how the assignment price is treated in the land transfer tax calculation.
- The federal foreign buyer ban and Ontario’s Non-Resident Speculation Tax may apply depending on your status. Ontario has transitional NRST rules for assignments entered into on or before October 24, 2022.
- The Tarion warranty stays with the home for up to 7 years even if it is sold. How pre-possession coverage such as deposit protection and delay compensation applies to an assignee is something to confirm with Tarion.
- Mortgage: lenders may value the unit at the assignment price or the original price, which changes the down payment you need. Check with a mortgage professional early.
What the seller (assignor) should watch
- Start with the assignment clause in your contract: whether it is allowed, the fee, the advertising limits and any timing limits. Get the builder’s written consent first.
- If the assignee fails to close, the liability can come back to you. Check the assignee’s ability to pay (pre-approval, deposit) and require a deposit from the assignee in the assignment agreement.
- Plan the taxes first. After HST on the profit and income tax (possibly as business income), what you keep may be much less than you expect.
- If you sell through an agent, the advertising must be accurate and name the brokerage. Putting the contents of an agreement, such as the price, into an ad needs the written consent of the parties (TRESA General regulation, O. Reg. 567/05, s. 12.1 (10)).
- Write the deposit reimbursement and the profit as separate amounts in the assignment agreement so the deposit is excluded from HST.
Example
In 2024 you sign for a downtown pre-construction condo at $600,000 and pay 15% ($90,000) in deposits. In 2027, before interim occupancy, your plans change and you agree to assign the contract for $680,000. Your contract allows assignments but requires the builder’s consent, a fee and the builder’s legal costs.
The assignment agreement lists the $90,000 deposit reimbursement and the $80,000 profit separately. HST applies to the $80,000 profit, so $10,400. You held the right for three years, so the 365-day flipping rule does not catch you, but you settle how the profit is taxed with your accountant. At final closing in 2028 the assignee pays the builder the $510,000 balance plus HST and adjustments, and the lawyer calculates the land transfer tax. The amounts and dates are only an illustration.
What the law and official sources say
Quotes are copied word for word. The "In plain words" lines are our explanation, not an official translation.
A condo unit assignment is a transaction where the buyer of a pre-construction condo unit transfers their purchase agreement to a new buyer before taking ownership of the unit. A buyer may be able to assign the purchase agreement to a new buyer before or during interim occupancy. Buyers are encouraged to review the purchase agreement as there are often conditions that can include requiring the developer’s agreement to the assignment, charging a fee, and keeping the buyer liable for closing.In plain wordsAn assignment is the pre-construction buyer handing the purchase agreement to a new buyer before taking title. Contracts often require the builder’s consent, charge a fee and keep the original buyer liable for closing.
Source: condoauthorityontario.ca/wp-content/uploads/2023/09/CAOs-Buyers-Guide_2025.pdf · checked Oct 30, 2026
(a) the other supply is deemed to be a taxable supply, by way of sale, of real property that is an interest in the single unit residential complex or residential condominium unit; andIn plain wordsWhen someone other than the builder assigns a new home or condo contract, it is treated as a taxable sale of an interest in the home, so HST applies.
Source: laws-lois.justice.gc.ca/eng/acts/E-15/section-192.1.html · checked Oct 30, 2026
(i) if the other agreement indicates in writing that a part of the consideration for the other supply is attributable to the reimbursement of a deposit paid under the purchase agreement, the part of the consideration for the other supply, as otherwise determined for the purposes of this Part, that is solely attributable to the reimbursement of the deposit paid under the purchase agreement, andIn plain wordsIf the assignment agreement says in writing that part of the price reimburses the original deposit, that part is taken out of the amount HST applies to.
Source: laws-lois.justice.gc.ca/eng/acts/E-15/section-192.1.html · checked Oct 30, 2026
Subsection (1) applies in respect of any supply by way of assignment of an agreement of purchase and sale if the supply is made after May 6, 2022.In plain wordsSection 192.1, which puts HST on assignments, applies to assignments made after May 6, 2022, that is, from May 7 on.
Source: laws-lois.justice.gc.ca/eng/AnnualStatutes/2022_10/FullText.html · checked Oct 30, 2026
(a) prior to its disposition by the taxpayer, either … (ii) a right to acquire a housing unit located in Canada; and … (b) owned or, in the case of a right to acquire, held, by the taxpayer for less than 365 consecutive days prior to its disposition, other than a disposition that can reasonably be considered to occur due to, or in anticipation of, one or more of the following events:In plain wordsIf you sell a right to acquire a home (a pre-construction contract) after holding it for less than 365 days, it is a flipped property and the profit is business income, unless one of the exceptions in the Act applies.
Source: laws-lois.justice.gc.ca/eng/acts/I-3.3/section-12.html · checked Oct 30, 2026
The coverage begins when you sign the Agreement of Purchase & Sale, and remains in effect for up to 7 years even if the home is sold.In plain wordsTarion coverage starts when the purchase agreement is signed and lasts up to 7 years, even if the home changes hands.
Source: tarion.com/the-new-home-warranty · checked Oct 30, 2026
A registrant shall not include anything in an advertisement that could reasonably be used to determine any of the contents of an agreement that deals with the conveyance of an interest in real estate, including any provision of the agreement relating to the price, unless the parties to the agreement have consented in writing.In plain wordsAn agent cannot put anything in an ad that reveals the contents of a real estate agreement, such as the price, without the written consent of the parties.
Source: ontario.ca/laws/regulation/050567 · checked Oct 30, 2026
Common questions
Can I assign my pre-construction contract whenever I want?
No. The original contract must allow it and the builder must consent in writing. If the builder refuses, the deal stops. Some contracts allow assignments only before interim occupancy or limit advertising, so check yours.
How much is the assignment fee?
There is no set amount. It is whatever the contract says and it varies by project. The builder’s legal costs are sometimes added. Check the assignment clause before you sign the original agreement.
Does HST apply to the whole assignment price?
If the assignment agreement separately states in writing the amount that reimburses the deposit, that part is excluded and HST applies to the rest (usually the profit). If it is not stated, HST can apply to the whole amount (Excise Tax Act, section 192.1). Ask an accountant who must collect and remit it.
Can an assignee claim the HST new housing rebate?
The person who takes the home from the builder at final closing may qualify if they meet the conditions, but an assignment makes the conditions more complicated. Confirm with an accountant and your lawyer before you sign.
Can I list an assignment on MLS?
Only if the contract allows advertising and the builder consents in writing. An agent’s ad must be accurate and name the brokerage, and putting the contents of an agreement such as the price in an ad needs the parties’ written consent.
What if the assignee fails to close?
Depending on the contract, the original buyer (assignor) may remain liable for closing. That is why an assignor should check the assignee’s finances and take a deposit under the assignment agreement.
Guides that use this term
Sources checked
- Condominium Authority of Ontario, Residential Condominium Buyers’ Guide 2025 (3.6 Assignment & Selling) · checked Oct 30, 2026
- Excise Tax Act, s. 192.1 (laws-lois.justice.gc.ca) · checked Oct 30, 2026
- Budget Implementation Act, 2022, No. 1 (S.C. 2022, c. 10), s. 52 — when section 192.1 applies · checked Oct 30, 2026
- Income Tax Act, s. 12 (12)–(14) flipped property (laws-lois.justice.gc.ca) · checked Oct 30, 2026
- Condominium Act, 1998, s. 80 (6) assignment of the right to occupy (e-Laws) · checked Oct 30, 2026
- O. Reg. 567/05: General, s. 12.1 (TRESA — advertising) · checked Oct 30, 2026
- O. Reg. 365/22: Code of Ethics, s. 5 (TRESA — accurate, not misleading) · checked Oct 30, 2026
- RECO Bulletin 5.1, Advertising requirements · checked Oct 30, 2026
- Tarion, What is the new home warranty · checked Oct 30, 2026
- Ontario Ministry of Finance, Non-Resident Speculation Tax (assignment transitional rules) · checked Oct 30, 2026