From the Mecklenburg County Property Appraiser's record of every sale, the roll and the permits. The land is the last sale in the six years before the house was built; the exit is the first sale of the house after. In progress means a company bought in the last three years and the roll shows no new house yet. When one deed bought a tract, the land price shown is the tract's price divided by its lots. A teardown had a house on the lot when the builder bought it. Companies at the same mailing address are shown together; check the names before you treat them as one builder.