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. Here are house offer letter samples to win a bidding war.3 examples to use as a reference point. Craft a winning house offer letter with our customizable template and tips. Learn how to write a house offer letter that will be sure to make you stand out from the competition. These real estate email templates are designed to cover various scenarios, from making a home purchase offer to drafting a property management agreement. We offer a customizable sample offer letter to purchase property in PDF. 3. Point out the home's attributes. After reviewing the terms,. In a seller's market, a letter of mortgage pre-qualification shows a homeowner that you're serious about buying.