Adelphi Mill – DBA


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Historic Mill and Miller’s Cottage
4, 292 SF
Adelphi, Maryland 

Historic Preservation, Conditions Assessment 


Adelphi Mill is the only mill still standing in Prince George’s County and one of the oldest in the Washington, DC area.  The site was purchased by Issachar and Mahlon Scholifiled in 1796 and was constructed, along with an adjacent miller’s cottage, but it did not appear on county tax records  until 1798.  It subsequently passed through several owners, being used as a grist mill and occasionally for wool carding.  In 1865, the mill was purchased by Washington banking magnate George Washington Riggs (1813-1881) who added it to his expansive estate that included portions of what is now Hyattsville and Langley Park. The mill became a significant landmark in the region, appearing on numerous maps through the turn of the 20th century.  It remained in the Riggs family ownership until 1920 when the mill and surrounding land was purchased by Frederick and Henrietta McCormick-Goodhart who donated the building and 34 acres to the Maryland – National Capital Park and Planning Commission in 1951.

DBA is currently working with Oehme, Van Sweden Landscape Architects to develop a Conditions Assessment and Preservation Master Plan for the mill which will entail conducting a complete survey of exterior and interior physical conditions and performing a code analysis.  DBA has met with stakeholders to discuss the needs and goals for the property and is working to improve the efficiency of the mill as a rental event venue.  DBA will develop design options to improve and expand this use while addressing ADA accessibility, kitchen upgrades and the like.   The final Conditions Assessment and Preservation Master Plan will include these design options for future development in addition to a list of prioritized repair and rehabilitation items.

  • Davis Buckley Architects and Planners
    1612 K Street, NW, Suite 900
    Washington, DC 20006
    T: 202-223-1234
    F: 202-223-1212

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