He was educated at the University of Pennsylvania.
At the age of twenty began work with his father's company. Later however, he decided to be an architect, and after a period of training in the Philadelphia office of Wilson Brothers, worked as draftsman there until 1882 when he was taken into partnership, and for a decade continued a member of Wilson Brothers & Company.
Shortly after the turn of the century Mr. Sellers established an office in Philadelphia, and for the most part carried on his work without associates. In 1910 he was commissioned architect for alterations at the old St. Clement’s Church, also designed Casimir Hall at the Curtis Institute of Music (c.1927), served at one time on a committee entrusted with the restoration of Independence Hall, and assisted in the task of restoring the venerable Christ Church in Philadelphia, and Washington’s Headquarters in Valley Forge. In addition Mr. Sellers won a reputation for the excellence of his work in the residential field of design, with a number of distinctive homes in Germantown to his credit.
Elected a member of the Philadelphia Chapter, A.I.A. in 1909 and advanced - to Institute Fellowship in 1912.