It’s mad you would think buying a house you would want it to look clean and niceJust read through this thread and I'm surprised that nobody has mentioned that not every household has a window cleaner. I say this, because you say there are 200 houses on this estate and hopefully you can get them all. I think that the figure (that somebody mentioned previously) of you'd be lucky to get 5 is about right, if you're lucky.
There are an awful lot of people out there that aren't bothered about having a window cleaner. In my experience - the youngsters.
The first thing to do is to canvas the estate and get a feel for it. If the first 5 that answer say they've already got a window cleaner, then you'll know what to expect. Definitely canvas the whole area first, so that you can judge for yourself.
Good luck ?
all I can do it get a feel for the market really and go from there
thanks again