"existing building" means a building or structure which - (a) fronts on to a qualifying street, and (b) existed on 13 September 2000;
"facade" in relation to a building or structure or part of a building or structure, means the exterior wall of the building or structure or, as the case may be, the part of the building or structure which fronts on to a street;
"lease", "lessee", "lessor", "premium" and "rent" have the same meanings respectively as in Chapter 8 of Part 4;
"market value" in relation to a building, structure or house, means the price which the unencumbered fee simple of the building, structure or house would fetch if sold in the open market in such manner and subject to such conditions as might reasonably be calculated to obtain for the vendor the best price for the building, structure or house, less the part of that price which would be attributable to the acquisition of, or of rights in or over, the land on which the building, structure or hou
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