When does an offer to purchase a home become effective?

The Offer To Purchase Form 2-T becomes effective and binding on the date that: “(1) the last one of Buyer and Seller has signed or initialed the offer or the final counteroffer, if any, and (2) such signing or initialing is communicated.

The buyer and seller are not under contract until these two elements are satisfied.

And until the contract becomes effective, either the buyer or the seller can withdraw any offer or counteroffer they make.

Also worth noting, an ‘acceptance’ with a modification - such as we accept but we change the due diligence amount or the due diligence period - - is really a rejection. You need to accept an offer or counter-offer exactly as it is presented, any modification is a rejection.

They could always accept your change, but they could also walk away.