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. An Offer to Purchase Real Estate sets out the terms of a proposed real estate deal.Create yours now with our free form. Here are house offer letter samples to win a bidding war. 3 examples to use as a reference point. Snag our free home offer letter templates, learn what to include and avoid in your letter, and get the inside scoop on how to deliver it to sellers. Writing a personalized offer letter may be one way for buyers to help stand out in a competive situation. Illinois Free Letter of Intent ( LOI ) Template. Utilize our Letter of Intent to formally express your desire to buy a product or service. Learn how to write a house offer letter that will be sure to make you stand out from the competition.