Citadel DCA

02/20/2026

In November we completed our 4 year effort to clean and repair the Milford granite exterior of the US Treasury building at 15th & Pennsylvania in DC. You don't get many projects like this one, and we were honored to have led the project.

10/19/2025

Rafter detail for installation of Structural Insulated Panels on 1759 horse stable, Elizabeth Furnace, Lititz, PA 2017

06/07/2025

Elizabeth Furnace, 2019, Lititz, PA

05/27/2025

Parque del Buen Retiro, Madrid, 2025

05/25/2025

This has been a difficult one to address, but we are making progress.

12/02/2024

12/02/2024

Villa Majorelle, Nancy, France, architect Henri Sauvage, 1902

11/28/2024

This should be required reading for ALL architects.

The highly influential writings by an important early advocate for the conservation of historic cities are made available for the first time in English.

11/03/2024

Jonas B. Martin Mansion's west facade painting & pointing nearing completion. Architect, Cassius Emlen Urban, 1886-1888, Lancaster, PA

06/23/2024

We are pleased to announce that we will be leading a team composed of structural and envelope engineers, Simpson Gumpertz & Heger and Annapolis Landscape Architects for a redesign of the courtyard at All Souls Church, Unitarian on 16th St. NW in Washington, DC. The National Register church, patterned after London’s St. Martin-in-the Fields was designed in 1922 by Charles Allerton Coolidge FAIA (1858–1936) best known as a partner in the firm of Shepley, Rutan & Coolidge, successors to the firm of Henry Hobson Richardson. Coolidge was also senior partner in that firm's successors, Coolidge & Shattuck and Coolidge, Shepley, Bulfinch & Abbott. Coolidge later served on the Commission of Fine Arts.

All Souls was established in 1821 as First Unitarian Church. Founders included Secretary of State and future President John Quincy Adams; Secretary of War and future Vice President John C. Calhoun; Architect of the Capitol Charles Bulfinch; and newspaper publisher, city alderman, and future mayor Joseph Gales.

Bulfinch designed the church’s first building, at Sixth and D Streets NW, close to City Hall. President James Monroe donated $100 toward the bell, which was forged by Paul Revere’s son, Joseph Revere. During the Civil War, the church was used for a time as a hospital. In 1878, the congregation moved to a new building at 14th and L Streets NW, and took on a new name: All Souls Unitarian. The church moved to its current location upon the completion of Coolidge's design in 1924.