Tarrant County Housing Assistance Office (TCHAO) partners with apartment, multifamily unit and private property owners to provide rental units to families. All permits may be applied for online.How to fill out the Building Use and Rental Agreement Form? 1. Enter the date requested and today's date. 2. In Accela Citizen Access, this permit application is under the "Building Permits" drop down and is called an "Occupancy Change of Use. " Change of Use Packet. We have ten floor plans to choose from.