An Offer to Purchase Real Estate sets out the terms of a proposed real estate deal. Create yours now with our free form.Ready to put a bid on your new property? Download FortuneBuilders' free real estate offer letter template so your proposal stands out. Today we are going to talk about how to fill out a trek one to four offer. Here are house offer letter samples to win a bidding war. 3 examples to use as a reference point. This letter of intent summarizes the general terms of a proposed purchase and sale agreement between Seller and Buyer. Your letter should explain why you're interested in buying the house and include details regarding your mortgage financing and expected closing date. A Texas residential purchase agreement outlines the terms and conditions of an offer to purchase real estate.