For assigned parking lots, each tenant is allowed a specific amount of stalls, usually one or two. The property manager may require you to leave a parking badge or sticker on the vehicle dashboard while it's on the premises for identification purposes. In assigned lots, parking stalls are included in contracts. Other tenants have the right to report parking violations to the property management, which could lead to inquiries or possible towing. Just because a person never uses their stall(s), (for example he/she doesn't drive), it is never okay to assume that you can use it.