Selhurst Depot is a railway maintenance facility unit located in Selhurst, South London. It is operated by Southern and primarily used for servicing, cleaning, repairing, and stabling Electrostar and other electric multiple unit trains. It features a large maintenance shed, a train wash, a 5G-enabled, modern, digital maintenance facility to keep commuter trains operational. It services the Brighton Main Line and is opposite Selhurst station. The depot has the code SU.