No two properties are identical in that their location may be very similar but never the same. In a given neighborhood lots with the same square footage should be the same price provided that they share all of the same amenities. This also applies to the homes, if two houses were built in the same year, have identical square footage, the same story height, the same construction detail, and have the same number of plumbing fixtures, fireplaces, outbuildings, etc., the values should be the same.