The court has placed the most commonly used forms on line as a resource. Please be advised that the forms detailed below are intended to be a guide.17. TIME PERIOD OFFER Purchaser and Seller understand and agree that, unless earlier withdrawn, this offer is good until a.m. p.m. Offer and Acceptance. This model is in many ways a Seller's form but it also includes Buyer-friendly provisions. It gives both parties a useful reference point. Learn what steps need there are after your offer to buy a New York City apartment is accepted and how long the process should take. In compliance with the above, the undersigned agrees, if this offer is accepted within. Days (365 calendar days unless a different period. The completed typewritten form must be filled out correctly prior to emailing your request.