O'Neill House Office Building
O'Neill House Office Building, Congressional office building in Southwest Federal Center, United States.
The seven-story limestone and glass structure at 200 C Street Southwest contains offices for the House of Representatives and Department of Health services.
Originally constructed in 1963 as Federal Office Building No. 8, the facility housed Food and Drug Administration laboratories until its renovation in 2008.
The building received its current name in 2012 to honor Thomas P. O'Neill Jr., who served as Speaker of the House from Massachusetts.
The building accommodates 2,000 staff members and features modern open-plan offices, upgraded heating systems, and enhanced energy efficiency installations.
The renovation introduced two large atriums with skylights and glass curtain walls, replacing the original limestone panels on multiple sides of the building.
Location: Washington, D.C.
Inception: 1963
Architectural style: modern architecture
Floors above the ground: 7
Address: 200 C St SW, Washington, DC 20024 20024 20024
GPS coordinates: 38.88539,-77.01442
Latest update: March 3, 2025 10:25
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