A letter of offer is a formal document to express your interest in purchasing a property. Download our letter of offer to make a formal offer on a property you are interested in purchasing. Make sure you add any conditions, for example a condition of purchase may be a satisfactory building and pest inspection or approval for finance from your lender. Be sure to include the names of all purchasers. This document is not  a contract. A Contract for Sale is only drawn up once the vendor accepts your offer and all the conditions of your offer are met.