Charles Innes, a leading Trinidad stonemason and amateur architect, worked with Delos Chappell, Trinidad's city engineer, on this two-story stone mansion. The two also collaborated on the city's original waterworks (1879), whose pumphouse survives at the intersection of Cedar and Convent on the banks of the Purgatoire River. In this mansion, rough-faced stone forms the foundation and walls, while elaborate Eastlake wooden trim and frame gables, porches, and siding make the superstructure seem light by contrast.