steels labour costs

Hi there, I am doing a loft conversion on a terraced house. Both neighbours have already done loft conversions (unfortunately). I say unfortunately as I believe this just makes my loft conversion slightly more complicated with regards to waterproofing and joining to their structures. Nither...

Dear All, I hope there's not an identical query already, but if there is I couldn't find it i'm afraid.. My friend is a structural engineer and has for a very reasonable fee offered to calculate/draw up my loft conversation for me on my East London 2up 2down cottage.... The conversion is dead...