William Blacklock House, Federal architectural residence in Charleston, United States

The William Blacklock House is a two-story brick house on a high brick basement at 18 Bull Street, on the southern edge of the College of Charleston campus. Its hipped roof carries a gable above the central entrance, which is reached by a double flight of stairs with iron railings and framed by sidelights and a fanlight. Round-arched windows flank the entrance; the other windows have flat lintels with keystones. Two outbuildings have Gothic Revival features.

William Blacklock bought two lots in Harleston Village on September 24, 1794, and the house was likely built by 1800; a city directory first listed him living there in 1802. The design resembles work by Gabriel Manigault, though no attribution is confirmed. It was restored in 1937, acquired by the College of Charleston in 1974, and named a National Historic Landmark in 1973.

The house's design resembles work by Gabriel Manigault, though no attribution has been confirmed; Blacklock sat on the committee that built a bank (now City Hall) designed by Manigault the same year. The two outbuildings on the property carry Gothic Revival features, a later taste than the main house.

The property sits on Bull Street within the Charleston Historic District and is easily accessible on foot among other historic buildings in the area. Visitors should note that the grounds are managed by the college and hours may vary depending on the academic schedule.

The house's design resembles work by Gabriel Manigault, though no attribution has ever been confirmed. Blacklock sat on the committee that oversaw construction of a bank, now City Hall, designed by Manigault in the same year, and other elements of 18 Bull Street echo Manigault designs.