Question Author
hi jen
thanks for your message, the extension was built almost 5 years ago, basically a conservatory but with a proper tiled pitched roof, the builder told us at the time we did not require pp as it was under the specified size br was never mentioned. the house has been surveyed and no problems were thrown up, the extension is of sound construction and has been very nicely built. I know we mayhave been a bit naieve at the time, but hindsite is a great thing eh.