These fees include “transfer”, “contingency”, “deferred-management” and “selling-service” fees. Fundamentally, all of them are triggered by an event (such as resale or sub-letting).
Leases of retirement flats and bungalows often include a fee triggered by certain events, such as when the owner sells or sub-lets their property. These fees are typically set at around 1% of the property sale price but may be as high as 30%.