High Bank, Mill Hill Lane, Brockham, Betchworth, Surrey, RH3 7LS
Replace gas-fuelled heating with air-source heat pump to power under-floor heating; insulate and raise the height of flat roof by 200mm; install photo-voltaic solar panels on roof; glaze-over balcony to reduce solar overheating; repair timberwork of first floor conservatory and installation of a wood-burning stove.