District of Columbia property tax appeal 2027: deadline, forms and how to file
To appeal a District of Columbia assessment, file with the Office of Tax and Revenue, Real Property Assessment Division; in District of Columbia the deadline is April 1. Confirm the exact date on your notice or with the assessor; we add each county's 2027 date here when it is published.
Data as of 20 Oct 2026 · the District of Columbia assessorCheck your own assessment
Free. We compare the value on your notice with recent sales of similar homes nearby and tell you whether an appeal is worth filing. Have your assessment notice and tax bill handy.
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How to file in District of Columbia
- Step 1
File the appeal
Use the method your notice lists, by the deadline on the notice.
- Step 2 · before the hearing
Prepare and submit your evidence
Comparable assessed values, photographs of condition issues and recent sales where they are public. Ask the appraisal office for the evidence it will use.
- Step 3
Meet, then hear
An informal review usually comes before a formal hearing; most reductions happen at the informal stage.
Before you file: how to read your notice · evidence that works · informal vs formal hearing · when not to appeal
District of Columbia questions
Data as of 20 Oct 2026 · District of Columbia statutesWhen is the property tax appeal deadline in District of Columbia?
District of Columbia law sets it: On or before April 1 after the notice; new owners within 45 days of the transfer (D.C. Code §47-825.01a(d)(1)–(2)). Then the Real Property Tax Appeals Commission within 45 days of OTR’s final determination (§47-825.01a(e)(1)(A)). Confirm the exact date on your notice or with the assessor.
Who hears a appeal in District of Columbia?
The Office of Tax and Revenue, Real Property Assessment Division hears the first appeal. Filing rules: D.C. Code §47-825.01a(d), (e).
What value should I compare on my District of Columbia notice?
The figure labeled “Proposed Assessed Value”. District of Columbia appeals are argued against market value as of January 1 before the notice (D.C. Code §47-802(8), §47-820(a)(3)); e.g. January 1, 2025 for tax year 2026, and comparable assessments of similar homes are also a recognized argument.
Does District of Columbia cap assessment increases?
Homestead taxable assessment may rise no more than 10% a year (2% with senior or disability relief); applied as a credit and lost after a sale (D.C. Code §47-864).
Check whether yours is over-assessed
- D.C. Code §47-820 (assessed value = estimated market value)
- D.C. Code §47-802 (valuation date definition)
- D.C. Code §47-824 (assessment notice)
- D.C. Code §47-825.01a (administrative review and RPTAC)
- U.S. Census Bureau, county population estimates (2024) and county gazetteer (2024).