iona mackenzie

I am hoping you can all give me a little help. We have a chalet style bungalow with dormer on both sides. The previous owners added a 3m single storey extension with a flat roof (Kitchen) to back of the bungalow along with a side extension (3.25m) We are looking to further extend the kitchen by 2m, while also building 2nd storey(1st floor) onto the the already there flat roof, (extend out of the dormer,) to add a 3rd bedroom upstairs and to make existing bedroom slightly bigger, while also reducing to only 2 bedrooms. From the drawings attached we are sure that the foundations on the existing extension are suitable. SO my question is.... has anyone done this before? Can we build onto the flat roof? Can you extend out of a dormer? Would we have to replace the entire roof? Or maybe change it to Mansard roof? What's the cost of modular roofs? Any advice and ideas would be fantastic. I've attached drawings from when the previous owners extended, hopefully can make sense of them Many Thanks west_lane_kitchen_extension_2.pdf

Hi @JAY123 What did you do in the end? Would be interested to know as this is what we are looking to do. Many Thanks