District of Columbia data on condominium property attributes, including air rights, record lots, and tax lots. The dataset is produced by the DC Surveyors Office and the Real Property Tax Administration's Maps & Title division for the Office of Tax and Revenue. It was last updated on March 25, 2026.
Use Cases
- Model property valuation based on condominium lot attributes like air rights.
- Analyze urban development patterns using approved condo record and tax lot data.
- Link administrative property records based on Condo Book & Page identifiers.
- Support tax assessment workflows by tying condo documentation to specific lots.
Strengths
- Data is provided in multiple formats, including CSV and GEOJSON, for flexibility.
- The dataset has a clear provenance from DC government agencies (Surveyors Office, RPTA, OTR).
- License is CC-BY-4.0, allowing for broad reuse.
Limitations
- Column-level documentation is absent; field semantics must be inferred after download.
- Row count is unknown, which may limit suitability assessment.
- Description metadata is limited; actual data quality requires manual inspection after download.
Provenance
- Source
- District of Columbia government agencies (Surveyors Office, Department of Buildings, Real Property Tax Administration).
- Collection Method
- Administrative records from the approval, recording, and tax assessment process for condominiums.
- Freshness
- Last updated 2026-03-25 08:18:12.375612; freshness should be verified.
- Geography
- Washington, District of Columbia, USA.