why should it be a problem? in the UK, methadone is normally dispensed from a regular pharmacy, just like any other prescription you might get from your doctor. I wonder if what you are seeing is that the clinic has been placed in a neighbourhood that already had high crime/homelessness/etc. since that is where the addicts who need its services are? it just seems odd that a clinic would be placed in an affluent area, where property costs are probably high, and the service users have to travel to get there, but maybe it's an american thing?

I know some people complaining about the noise from child care in their neighborhood.