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.Make your opener as personal as possible. Focus on three things: State your intentions, show that you have the financial means to make the purchase and make a personal appeal to the seller. You are NOT using a realtor. Whenever I come across a listed property I want, I ALWAYS ask one of my realtor friends to write an offer for me. Craft a winning house offer letter with our customizable template and tips. The Land Records Division accepts documents from property transactions in Fairfax County and the City of Fairfax. Here are house offer letter samples to win a bidding war. 3 examples to use as a reference point.