The law is pretty crystal clear, though, and I found that the legal chap in our local authority accepted it and instructed the council tax collection department that they would be acting unlawfully if they sought to impose a completion notice and start charging council tax.   There is clearly some scope for interpretation as to what does, or does not, form a rateable hereditament, but it is clear from the case law that an absence of a potable water supply, and, in some instances, the a