The lifespan of a compost bin can vary depending on the materials used, the quality of construction, and the level of maintenance. A well-built compost bin made from durable materials such as wood, plastic, or metal can last for several years, even up to a decade or more with proper care. However, factors such as exposure to the elements, pests, and regular wear and tear can reduce the lifespan of a compost bin. Regular maintenance such as cleaning, repairing, and replacing damaged parts can help extend the life of a compost bin.