4540 Fessenden Street, NW Washington, D. C.
- Year Built: 1900-01
- Architect: William L. Conley
- Built By: T. J. Giles
The house located at 4540 Fessenden was designed by William L. Conley, an architect registered in Washington, DC.
During the first decade of the twentieth century he maintained an office in Tenleytown and was a charter member of the Singleton Masonic Lodge.