I bought a pair of maps of my property - a location plan, and a site plan - because my local authority's planning dept refused to consider my application without them. The plans I purchased were very poor; they were not only many years out of date (not reflecting changes in the area up to 10 years old) but also the location plan failed to show a sufficiently wide area to make finding the property feasible. In addition, the red outline applied around the property (another planning dept. requirement) carefully EXCLUDED any buildings on the site! When these plans were submitted they were rejected; it was not until they had been photocopied (in black & white) and a new red outline drawn on top, that my plans were finally deemed acceptable. Overall verdict: a waste of money, forced on me by Planning Dept. Regs!