Charles was the son of Charles H. and Mary Grace Shafer McCauley of Chicago. He studied architecture at the University of Illinois. He married the former Winnie Mae Stevenson and moved to Birmingham in 1919. He worked for William Welton and built a residence for himself on Lakeview Circle before opening his own practice in 1925.
- Bryant, Ted (October 9, 1965) "McCauley Assigned To Schools" Birmingham Post-Herald, p. 1
- Beiman, Irving (June 25, 1967) “Design OK’d for big, new post office.” The Birmingham News
- "Prominent architect McCauley rites today" (June 17, 1970) Birmingham Post-Herald, p. 15
- Charles Hartman McCauley at Findagrave.com