Here are house offer letter samples to win a bidding war. 3 examples to use as a reference point.Here's a sample offer letter, plus some tips: 1. Make your opener as personal as possible. Learn how to write a house offer letter that will be sure to make you stand out from the competition. 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. 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. We found a house that we truly fell in love with and found out there were already two offers above asking. An offer letter could include details about why you love the seller's home and why you want to live there. It's often written to tug on their heartstrings.