lad just knocked at my door & asked me to quote to clean the windows on a new house he's just built - its on 2 levels, the front has 1 dormer & 3 bottom windows & a big glass front door, the gable end has 1 window at top & 2 at 1st floor , back has 2 dormers at 1st floor & 3 windows & a patio door at ground if i was just cleaning the outsides i'd charge £15 for outs wfp & £30 for in & out -- but i've no idea how to price for a builders clean or what to look for when pricing i'm supposed to see him in the morning so any advice would be a massive help