I live in a flat 3rd floor, I cleaned our windows WFP and those of the the person below no problem. The person on the ground floor different story, they didn't want theirs done so they complained to the landlord. As a result the landlord wrote to me and their letter said if I used such methods to clean the windows again then I would be taken to court by them as it was an anti social act. Of course, I challenged this and said to them "You tell me how I can do them then?". There suggestion was that I could do them from the inside Not poss with the design!), So when that wasn't an option they turned round and said "Use ladders!". What a load of rubbish, "why should I endanger my life just to do my own windows?" I said to them what about if I was to fall using the ladder, did that mean that I could sue them as it was them that instructed me to use a less safe means. They went mad. They told me "we will find other means" to this date they still have not done a thing! I am also not allowed to do my OWN windows! The point is there is aways hassle in this type of thing. Unless you have the whole block then it usually isn't worth the hassle.