The antebellum mansion sits on a nine-acre (3.6 ha) estate originally built in 1841 for John Dunwoody, one of the shareholders in the Roswell Manufacturing Company.

[2] Architect Neel Reid purchased the home in 1916, reconstituted the courtyard and gardens, designed the fieldstone driveway, converted the twin parlors into a large drawing room, and added modern plumbing, electricity and a furnace.

[1] The City of Roswell purchased the nine-acre (3.6 ha) Mimosa Hall property in 2017 for $2,950,000 from then-owner Sally Hansell utilizing financing from a 10-year Georgia Municipal Association installment loan.

[3][7] After purchasing the estate, the City spent $300,000 for structural analysis, tree assessments, fireplace repairs and a solar roof.

The home contains four bedrooms and four bathrooms and is 6,308 square feet in size [9] The interior contains three rare panels painted in 1881.