Learn how to write a house offer letter that will be sure to make you stand out from the competition. Here are house offer letter samples to win a bidding war.3 examples to use as a reference point. Learn how to craft a standout property offer letter with essential tips and a free template. Increase your chances of success in the competitive We've put together a few tips on how to write a letter to new home buyers as a seller so the house that was yours can welcome them right. 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. Sample House Offer Letter. Making a connection is huge. A real estate letter of intent (LOI) is a non-binding agreement that outlines the terms of a sale or lease contract.