5 Boundary Road Bishops Stortford Hertfordshire CM23 5LE
Conversion of existing pitched roof to form mansard roof (adding additional volume of not more than 50 cubic meters to the existing roof space) with 8 side facing rooflight windows and 2 first floor rear windows. Removal of the first floor rear window and 1 chimney. Replace 1 chimney with stainless steel flue.