In 1899, he moved from Denver, to Washington,[4] where he opened a mercantile business named Julius Garfinckel & Co., employing 10 clerks.
[7] In the late 1920s, Garfinckel had an eight-story department store building erected at the northwest corner of 14th and F Streets for $2,000,000.
Garfinckel, who remained single, later lived in an apartment at the Hay-Adams House on 16th Street NW,[8] where he accumulated a valuable collection of rugs and art objects.
One of Washington's public-spirited and generous citizens, he gave liberally to civic and philanthropic enterprises.
He was one of the principal supporters financially of his church and the local Boy Scouts chapter, of which he was vice president.
[citation needed] He was a director of the Riggs National Bank and of the Emergency Hospital, and a member of the Washington Board of Trade and the United States Chamber of Commerce.
Julius Garfinckel died on his 64th birthday of pneumonia in Washington, D.C. His funeral was held two days later at All Souls Unitarian Church.