This document discusses a plan called "One Planet Sutton" to retrofit housing in the suburbs of Sutton, UK to be more sustainable. The plan aims to retrofit 5,047 homes per year to be zero carbon by 2025. It proposes using financing mechanisms like energy bills surcharges and grants. Delivery would involve targeted marketing, working street by street, and coordinating retrofits during normal housing maintenance. The plan also aims to empower community groups and kick-start green businesses to help transform Sutton into a more sustainable place.