Vacant and Blighted Property Tax Assessment Data for Washington DC

District of Columbia's Integrated Tax System Public Extract (ITSPE) provides a subset for vacant and blighted properties. This dataset supports property tax billing, assessment analysis, and stores ownership, mailing addresses, and various lot types. It links to Vector Property layers using SSL (Square, Suffix, and Lot) identifiers.

Use Cases

• Analyze the distribution of vacant and blighted properties across different lot types such as tax lots, record lots, and condominiums.
• Link property ownership and mailing address data from the ITSPE subset to spatial layers for geographic analysis of blight.
• Study the relationship and conversion history between record lots and tax lots for assessment and taxation purposes.

Strengths

• Data originates from the authoritative District of Columbia government's Integrated Tax System.
• Includes linkage to spatial data via SSL (Square, Suffix, and Lot) identifiers for geographic analysis.
• Covers specialized property categories like vacant and blighted lots, Air Rights lots, and possessory interest lots.

Limitations

• Specific row count, column count, and temporal coverage are not provided in the input.
• The description notes complex relationships where not all record lots have a direct 1:1 link to the database.
• Data freshness is unclear as the last updated date is in the future (2026-03-25).

Provenance

Source

District of Columbia government, specifically the Office of the Chief Financial Officer (OCFO).

Collection Method

Extracted from the operational Integrated Tax System Public Extract (ITSPE).

Freshness

Last updated date is listed as 2026-03-25, which is inconsistent and suggests metadata may be incorrect.

Geography

Washington, District of Columbia, USA.