An Offer to Purchase Real Estate sets out the terms of a proposed real estate deal. Create yours now with our free form.Craft a winning house offer letter with our customizable template and tips. Our letter templates also help property sellers quickly send an acceptance reply to the offer. There is an art to writing offers that get accepted. Do you know how to write an offer letter for a house? We're here to teach you the ins and outs to improve your chance of closing a deal. Property_offer_acceptance_letter_template (1). Doc - Free download as Word Doc (. Is LOI a legal document?