The D.C. Historic Landmark and Historic District Protection Act (D.C. Law 2-144, D.C. Code §6-1101 et seq.) protects all historic landmarks or structures that contribute to a historic district listed in the District of Columbia Inventory of Historic Sites. Under the law, permit applications involving a listed property, or a building contributing to a historic district or its site must be reviewed for historic compatibility prior to issuance by the D.C. Historic Preservation Office, and often by the DC Historic Preservation Review Board (“HPRB”).

The Georgetown Law Library provides access to historic preservation decisions issued by the Mayor's Agent of the District of Columbia as well as the D.C. Federal and local courts.

How to Use This Website

Historic preservation materials on this community are grouped within five collections. Click the link below for a specific collection to view results from only that collection. Within each collection, materials are also categorized by subject matter. For an overview of all subject matters, click the blue “Subject Matter Summaries” button at top right. These subject matter summaries provide the reader context by highlighting important cases and discussing the evolution of historic preservation law in the District over the past several decades. To identify cases sorted by subject matter, use the “Discover-Subject” buttons at right. Click “View More” to see all subject matters. Most mayor’s agent cases contain a copy of the decision, a summary, and a picture of the property at issue.

When using the search box, make sure you have selected a search within “this community” in order to narrow results. Whenever looking at search results, use the Settings button (looks like a gear) to sort results by date and name, and to control how many results are displayed. Note that you may need to adjust Settings in order to view all results on one page.

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