Discover why successful commercial real estate investors use a letter of intent when first making an offer on commercial real estate and how you can too! An Offer to Purchase Real Estate sets out the terms of a proposed real estate deal.Create yours now with our free form. Haven't had much luck with something solid through Google. Include a brief description with what you know about the land. This should include at minimum the acreage, address if available, APN, and the price. Our real estate experts have helped break down the most common areas where real estate purchase offers can go awry and what to read closely before you sign. Seller agrees to sell, and Buyer agrees to purchase, the real property described below on the terms stated in this Purchase and Sale. A proof of funds letter is upfront proof that you are financially able to purchase the home. Here's what one looks like and how to get it.