a. m. mcnair house is a historic home located at hartsville, darlington county, south carolina. it was built in 1902, and is a two-story, three-bay, late victorian style frame residence on a brick foundation. it has an asymmetrical plan and a pyramidal roof with cross gables. it features a one-story, hip roof wraparound porch and a two-story gabled bay extension where the wraparound porch terminates. it was the home of a.m. mcnair (1857-1929), prominent hartsville businessman who served as co-owner of mckinnon and mcnair department store, founder and president of the pee dee furniture company, and vice president of the bank of hartsville.