A Texas rent-to-own lease agreement is a standard rental contract with an added option to purchase clause for the tenant. Lease-purchases may provide that once a sufficient down payment is paid, the tenant-buyer will have an option to purchase the property at a certain price.This document lays out the terms of the rental agreement and the steps the tenant needs to take if they want to buy the rental unit. Use the Lease Purchase Option to set forth all of the details of the transaction, including rent credits, purchase price, and time frame. Do you want to rent a home with the option to buy it at the end of your contract? Use our free lease to purchase agreement template to get started. Description: This example of an agreement between a developer and a lease- purchaser is intended to illustrate how NSP grantees, subrecipients. USE OF OPTION AGREEMENTS IN TEXAS PURCHASE CONTRACTS and LEASES. Sometimes a purchase option is tied to a lease agreement. ASSIGNMENT AND SUB-LETTING.