A hoop house is a type of greenhouse that is made up of metal or PVC pipes that are bent into an arch shape. The hoops are then covered with a plastic film, typically polyethylene, which helps to create a warm and humid environment ideal for growing plants. The lifespan of a hoop house will depend on the materials used and how well it is maintained. A well-built hoop house made with quality materials can last for 20 years or more. However, if it is not properly maintained, it may only last for a few years.