I did this job yesterday as a builders clean, but I felt I undercharged the job -

. It took me a lot longer than I expected, and there was bit ' stubborn' bits than I had anticipated.
So, just out of interest what would you have charged for a builders clean - insides and out, balcony glass, velux's the lot?
And what would you charge for a 4 weekly clean, as I sure he is going to ask?
Thanks
Marc