Halcyon House Sells for $28 Million. But to Whom? 
• January 15, 2026

Halcyon House, one of Washington’s most historic mansions at 3400-3410 Prospect St., N.W., has been sold for $28 million to a residential buyer. It is the highest price ever paid […]

Halcyon Nonprofit to Exit Halcyon House
• August 4, 2025

Halcyon, the nonprofit accelerator that has supported nearly 600 impact-driven entrepreneurs globally, announced July 29 that it will exit its historic Georgetown headquarters, Halcyon House, at 3400 Prospect St. NW, […]

D.C. Renaming Proposals Scrutinized
• September 3, 2020

In its analysis, the DCFACES Working Group “reviewed the namesake legacy of 153 assets, including schools, residential housing, streets, neighborhoods, parks, recreation centers, libraries and monuments.”