The standard "Residential Leasing and Property Management Agreement" in Texas offers customization in terms of contract length and includes an Evergreen clause. To comply with the Texas Real Estate Commission, owners should consider this notice that on occasion, Captex Property.How do I find a specific contract? Go to the Search menu and click on Contracts. A property management agreement is an essential contract that defines the relationship between property owners and property managers. Free price estimates from local Real Estate. Tell us about your project and get help from sponsored businesses. We have an agreement with the Bexar County Tax Assessor-Collector's Office to provide property tax billing and collection services. Commercial properties, such as office buildings or retail spaces, often require specialized management. Bexar County Government website.