[1] Designed by George S. Mills and built in 1904,[2] the house combines elements of the Colonial Revival and Georgian architectural styles.

An oil baron from Oklahoma, Neely lived in the house for fifteen years until his 1919 shooting death in the western United States.

[3]: 5 Located at 620 W. Spring Street, the Neely–Sieber House is a fine example of early twentieth-century Lima residential architecture.

[3]: 5  The house's three floors are divided into twenty-six rooms, many of which are decorated with chandeliers, carven mahogany panelling, and hand-painted ceilings.

[4] Above the main entrance is a broken pediment and a semi-circular transom,[2] and three third-floor dormer windows pierce the front of the roof.