If the lease is in writing, Texas law requires a landlord to provide the tenant with a copy of the lease within 3 business days of signing. Make a checklist of the condition of the property and any furnishings when you move in.(Most properties will provide you with an inventory and condition form). Email the PDF fillable lease application to them. An application must be filled out for every tenant over the age of 18. A lease is a legal contract between a property owner and an individual or company who is granted the ability to utilize that property for a specific purpose. 1. Gather personal and contact information. PROPERTY: Landlord leases to Tenant the following real property: Address: legally described as: in. County, Texas, together with the following non-real-property. How to fill out a residential lease application in Texas?