18 Chapel Street London SW1X 7BY
Erection of a conservatory extension at rear lower ground floor level and a new enclosure in the rear garden to accommodate mechanical plant. Lowering of the existing floor level in the front basement vault and alterations to the front lower ground lightwell area. Installation of trellis to rear boundary walls with Nos. 17 and 19. Installation of a skylight in the floor of the first-floor rear balcony.