. On returning to the United States, Hoppin joined the firm of
McKim, Mead and White in 1886. Reportedly, while with the firm,
McKim noted Hoppin's exceptional skill at rendering with one architectural historian writing: "Among architects that had a facility for perspective Francis L.V. Hoppin stands out..." He became the office specialist in
perspective, exemplified in his drawings for the
Century Club and
The Brooklyn Museum. Fellow office architect,
Egerton Swartwout, characterized Hoppin's drawings as "colored, blue sky and trees where there aren't any, and flying shadows on the building, you know, a real snappy piece of work." They worked together until 1896, when Francis left to found the firm of
Hoppin & Koen in New York City with
Terence A. Koen. The firm was based is known for police stations, fire stations and dignified town houses in the
Beaux Arts style. Among his apprentices at Hoppin & Koen were
Robert P. Huntington and Dudley Newton, Jr., the son of a prominent Newport architect. They designed homes for
Francis Vinton Greene (a relative),
James F. D. Lanier,
Andrew C. Zabriskie,
John J. Wysong,
Harris C. Fahnestock,
Charles Oliver Iselin,
Henry Clews, and
William Watts Sherman. and Koen died the following year in 1923. When the
Spanish–American War began, Hoppin enlisted in the 12th Regiment of the
New York National Guard, reaching the rank of
Major, and at one time was
Adjutant General of the First Brigade, New York National Guard. He was later granted the title of "Colonel" by Gov.
Charles Seymour Whitman, which he answered for the rest of his life. • Olney Street Fire Station (1892), 355 Hope St., Providence, RI •
Psi Upsilon Residence (1892), 4 Manning St., Providence, RI - Demolished in 1972. • Harry A. Waldron Residence (1893), 9 Stimson Ave., Providence, RI •
Hayter Reed Residence (1894),
Ottawa, Ontario - Demolished in 1970. • Maxcy Hall (1895), 108 George St.,
Brown University, Providence, RI - Altered. • Stephen A. Cooke Residence (1895), 37 Manning St., Providence, RI As Hoppin & Koen, 1896–1922: • Charles W. Cooper Residence (1900),
Tuxedo Park, NY •
Francis Vinton Greene Residence "Armsea Hall" (1901), Newport, RI (next to
Hammersmith Farm) - Demolished in 1969 •
James F. D. Lanier Residence (1901–1903), 123 East 35th Street, New York, NY. •
Andrew C. Zabriskie Residence "
Blithewood" (1902),
Annandale-on-Hudson, NY • Albany County Courthouse (1913–1915), Eagle Street,
Albany, NY - Renovation and expansion in 2006. •
Sara Delano Roosevelt Residence renovation (1915),
Hyde Park, NY •
Theodore Frelinghuysen Residence "Southways" (1919–1920),
Palm Beach, FL •
George B. McClellan Jr. Residence (1922),
Princeton, NJ ==Personal life==