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. Purchase offers require the offer price, financing terms, address of the property, relevant contingencies, and a target date for closing the deal.Crafting the perfect offer letter in Los Angeles, San Diego, or San Francisco means sincerely writing about your situation and connecting with a seller. TERMS AND CONDITIONS OF OFFER: This is an offer to purchase the Property on the terms and conditions herein. What should be included in a house offer letter? Address the Seller and Introduce Yourself. Buyer and Seller are referred to herein as the "Parties. " Brokers are not Parties to this Agreement. 2. We fill in the terms the buyer is trying to accomplish closing date, amount of the offer, down payment, financing, that sort of thing. It should include details about the agreement and a projected date for completing and signing the purchase agreement.