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Office of Tax and Revenue


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Real Property Assessment Process

The District of Columbia currently uses an annual assessment cycle. This means that all real property may be valued for property tax purposes annually. However, the city is divided into three groups that have approximately the same number of parcels and assessable base. One group of properties will be physically inspected each year. The other two-thirds will be valued via mass appraisal models.

Uniform and accurate assessments are the foundation of fair property taxation. In accordance with DC Code 47-823(c), the Office of Tax and Revenue publishes a real property assessment/sales ratio study. This report measures assessment quality by looking at the most recent assessment program and comparing the results of that effort to actual market conditions.

If you have any questions or comments, please contact the DC Assessor.

Tax Year Assessment Studies
2005
Assessor Reference Materials*
2004
Assessment Ratio Survey Report*
Assessor's Reference Materials*
2003
Assessment Ratio Survey Report*
2002 Assessment Ratio Survey Report*
Independent Reviews of District's Assessment Procedures
2001 Real Property Assessment/Sales Ratio Study*


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