True story, according to a S.T. Seems a new house constructed in a Utah suburb was discovered by the neighbour whose view it partially blocked to be 18 inches too high, according to local regulations. The neighbour (being on the city council) prevailed, and the newcomer was forced to lower the roof, presumably at great expense.
A few weeks later, the authorities were again alerted by the councilman. Seems he wasn't too enamoured of the vent system being installed over there....