Unimproved Property Contract. Texas Land Contract Template.A Texas land contract establishes terms binding the parties in the sale of vacant land. The Seller agrees to sell and Buyer agrees to buy the following property, located in the Bexar County, State of Texas,. The exact amount of payment for property is due on date of the sale in the form of a CASHIER'S CHECK OR MONEY ORDER payable to the Bexar County Sheriff's. To fill out this form, gather all necessary information about the property and parties involved. Ensure you have the purchase price and payment methods ready. Please indicate if you are filling out this form as: Authorized Agent. Fiduciary. To fill out this form, gather all necessary information about the property and parties involved. Ensure you have the purchase price and payment methods ready.