Prospect House, 3508 Prospect Street, Northwest, Washington, District of Columbia, DC

Significance: This is one of the few freestanding, late eighteenth century mansions remaining in the western part of Georgetown. Predating the establishment of the nearby Federal City,, it has been occupied from the time of its erection by several prominent families. The name comes from the views made possible by its setting on a hill above the Potomac River.
Unprocessed Field note material exists for this structure: N663
Survey number: HABS DC-210
Building/structure dates: ca. 1788- ca. 1793 Initial Construction
Building/structure dates: ca. 1850 Subsequent Work
Building/structure dates: ca. 1861 Subsequent Work
Building/structure dates: after. 1930- before. 1940 Subsequent Work
Building/structure dates: 1951 Subsequent Work
National Register of Historic Places NRIS Number: 67000025