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The Integrated Tax System Public Extract (ITSPE) stores property tax assessment and ownership information for the District of Columbia. It is used for sending tax bills, property analysis, and contains data on ownership, mailing addresses, tax lots, condominiums, and federally owned lands. The dataset is published by the District of Columbia government and was last updated on March 25, 2026.
The linkage between record lots and the tax database is not always 1:1, as described for tax lots created from existing record lots or condominiums.