I've been asked to price up a builders clean which I reckon will take one man about a week to do properly.
There's quit a bit of muck on the glass, but I've been assured I won't be held liable for any damage to glass. Will get this in writing to be sure.
I really can't be arsed to clean it, so hit me with some prices for a weeks work including access hire in stepped areas. Maximum height is around 35ft.
I'll put a small percentage on top of your weekly rate and quote the job.