HomeLife Frontier Realty Inc., Brokerage Joonghyun Ahn, Sales Representative

Group: Buying and selling process

Irrevocable period철회 불가 기간 (오퍼 유효 시간)

In one sentence

The deadline written in an offer until which the side that signed it cannot take it back. The other side must sign and return the offer before that time for a contract to form; after it, the offer is dead.

Last checked Oct 30, 2026

What is it?

An offer has a box that says “this offer is irrevocable until (date and time)”. The side that signed the offer cannot take it back before that time, and the other side has until then to decide whether to accept.

Accepting means signing the offer and delivering it back to the side that made it. Delivery must also happen before the deadline. Once the time passes, the offer automatically dies and neither side owes the other anything.

People sometimes call it the “offer expiry time”. That is close, but the real meaning is “cannot be withdrawn”: it is the time during which the side that made the offer is locked in.

Why does it exist?

A seller needs time to read the offer and talk to a lawyer or family. It would be unfair if the buyer could say “never mind” in the middle of that. The irrevocable period is a promise to the other side: “my offer stays on the table until this time.”

It also protects the side that made the offer, because they are not locked in forever. When the time passes they are free to make an offer on another home.

How long should it be?

No law sets the length. The side writing the offer chooses it, and it depends on the situation. It is usually kept short; it may be a little longer if the seller is far away or there are several sellers. Decide the exact time with your agent.

Write the time of day (a.m. or p.m.), not just the date. Weekends and holidays count. Be careful with a long irrevocable time: it lets the seller hold your offer like insurance while waiting for a better one.

When the seller signs back (counter-offers), the seller writes a new irrevocable time. Check that it gives you enough time to decide.

Offer dates and competing offers

In a hot market a seller may decide to review all offers at a set time, for example “Thursday at 7 p.m.”. This is called an offer date or a delayed offer presentation. The law says an agent must pass offers to the seller as soon as possible, but the seller can give clear written direction to wait until that date.

Offers made on an offer date usually carry an irrevocable time that night or the next day. When there are competing offers, the seller’s agent must tell every buyer who made a written offer how many offers there are.

An offer made before the offer date with a very short irrevocable time, to force a quick decision, is called a bully offer (a pre-emptive offer). RECO requires the seller’s agent to get the seller’s written direction in advance on whether such offers will be looked at, and to notify in writing everyone who has shown interest if that direction changes.

A sign-back restarts the clock

If the seller changes the price or a date and sends the offer back, that is a new offer with its own new irrevocable time. The original offer’s time no longer matters. Now the buyer must accept within the new time.

However many times the paper goes back and forth, the rule is the same: the side that signed last sets the irrevocable time, and the other side must sign and return it within that time for a contract to form.

What happens when it expires?

  • The offer is dead. If the seller signs late, there is no automatic contract. To continue, a new offer (or a document with a new irrevocable time) must be signed.
  • If the seller signed in time but delivery was late, there can be a dispute. Keep a record of how and when the signed copy was sent (email, fax). If in doubt, ask a lawyer.
  • Once free, you can still make a fresh offer on the same home if you want it.

What to watch out for

  • During the irrevocable time you cannot pull your offer, even if you change your mind. Be sure about the price, conditions and deposit before you sign.
  • Pick a time when people can be reached, rather than an odd hour like 11:59 p.m., to avoid delivery problems.
  • The signed copy counts as delivered only if it is sent the way the notices clause in the contract allows. Check that the email address or fax number is correct.
  • If the seller changes the offer date or decides to look at a bully offer, it is the seller’s agent’s duty to notify everyone who showed interest. Ask your agent to pass any such notice to you right away.

Example

Example

A detached house in Markham is listed on Monday, and the seller gives written direction to review offers on Thursday at 7 p.m. The buyer submits an offer on Thursday afternoon, irrevocable until 11 p.m. that night. The seller’s agent tells all three buyers that three offers were received.

At 9 p.m. the seller signs the buyer’s offer back with only the price changed, irrevocable until Friday at 10 a.m. The buyer signs at 9 a.m. Friday and the agent emails it, so the contract forms. If the buyer had missed 10 a.m., the sign-back would have died and a new offer would have been needed. The dates and times 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.

RECO Bulletin 4.2 — Delayed offer presentationRECO Bulletin 4.2, Managing a delayed offer presentation process (Summary)
A delayed offer presentation process typically means that the seller has decided that they do not want to see or consider offers until a specified date in the future.

In plain wordsAn “offer date” means the seller has decided not to look at or consider any offers until a set future date.

Source: reco.on.ca/agents-and-brokerages/reco-bulletins/reco-bulletin-4-2-managing-a-delayed-offer-presentation-process/ · checked Oct 30, 2026

RECO Bulletin 4.2 — Duty to convey offersRECO Bulletin 4.2, Managing a delayed offer presentation process (Legal obligation to convey offers)
The law is clear that a seller’s agent must convey an offer to the seller as soon as possible after receiving it unless the seller has given clear and detailed written direction to do otherwise.

In plain wordsThe seller’s agent must pass an offer to the seller right away. The only exception is when the seller has given clear, detailed written direction to wait.

Source: reco.on.ca/agents-and-brokerages/reco-bulletins/reco-bulletin-4-2-managing-a-delayed-offer-presentation-process/ · checked Oct 30, 2026

TRESA General Regulation — Written directions from a clientO. Reg. 567/05 (General), s. 22.10 (4)
Subsections (1) to (3) are subject to any written directions given by a client.

In plain wordsThe rule that offers must be conveyed right away (s. 22.10 (1) to (3)) gives way to a client’s written directions. This is the legal basis for an offer date.

Source: ontario.ca/laws/regulation/050567 · checked Oct 30, 2026

RECO Bulletin 4.3 — Bully offers and short irrevocable periodsRECO Bulletin 4.3, Managing a pre-emptive offer (Step 1)
A seller’s agent is expected to outline specifically, how, when and why a pre-emptive offer might arrive, and that they often include a particularly short irrevocable period in an effort to avoid, or pre-empt, the seller’s offer process and having to compete with other buyers.

In plain wordsBully offers often carry a very short irrevocable period so the seller must decide before the offer date, avoiding competition. The seller’s agent must explain this to the seller in advance.

Source: reco.on.ca/agents-and-brokerages/reco-bulletins/reco-bulletin-4-3-managing-a-pre-emptive-offer/ · checked Oct 30, 2026

RECO Bulletin 4.2 — Notice when the offer date changesRECO Bulletin 4.2, Managing a delayed offer presentation process (Handling a change in the seller’s direction)
Notify in writing anyone who has expressed an interest in the property of the change to the offer presentation date and time.

In plain wordsIf the seller changes the offer date or process, the seller’s agent must notify in writing everyone who showed interest (booked a showing, viewed the home, said they would offer, or made an offer).

Source: reco.on.ca/agents-and-brokerages/reco-bulletins/reco-bulletin-4-2-managing-a-delayed-offer-presentation-process/ · checked Oct 30, 2026

RECO — Number of competing offersReal Estate Council of Ontario, “Competing offers” (Number of competing offers)
In Ontario, the seller’s real estate agent is required to disclose the number of competing offers to all buyers who have submitted a written offer.

In plain wordsEvery buyer who made a written offer has the right to know how many offers there are, which helps when deciding on your irrevocable time.

Source: reco.on.ca/consumers/information-for-buyers/competing-offers/ · checked Oct 30, 2026

Common questions

Can I cancel my offer during the irrevocable period if I change my mind?

Normally no. You signed that the offer cannot be withdrawn until that time. If the other side signs and delivers it within the time, there is a contract. If you must get out, talk to a lawyer immediately.

If the seller signs after the time has passed, is there a contract?

Not automatically. Once the time passes the offer is dead. To continue, a new offer, or a document with a new irrevocable time, must be signed.

How long is it usually?

No law sets a length and it varies with the situation. It is usually short; a long irrevocable time lets the seller wait for other offers while holding yours. Decide with your agent.

Can I make an offer before the offer date?

You can. But if the seller has given written direction not to look at any offer before the offer date, the agent will not pass it to the seller. Check the offer process stated in the listing first.

Does a sign-back also have an irrevocable time?

Yes. A sign-back is a new offer, so the side sending it back writes a new irrevocable time. The receiving side must sign and deliver it within that time for a contract to form.

Guides that use this term

Sources checked

  1. RECO Bulletin 4.2, Managing a delayed offer presentation process · checked Oct 30, 2026
  2. RECO Bulletin 4.3, Managing a pre-emptive offer · checked Oct 30, 2026
  3. RECO Bulletin 4.1, Number and content of competing offers · checked Oct 30, 2026
  4. RECO, Competing offers (for buyers) · checked Oct 30, 2026
  5. O. Reg. 567/05: General, ss. 22.7, 22.10 (TRESA regulation) · checked Oct 30, 2026