...and it will only take you half an hour.
Don't forget that. They all say that...!
Funny you should say that Imp, had a customer call me the other day, they've built a stone summer room, about 25m, needs insulation boards, heat mat, SLC, levelling and grouting. Her husband says he could do it in a day so it shouldn't take me as long as that. Think they'll get a shock when I quote then