Originally constructed in 1909-1910, the Nemours Mansion was the home of A.I. duPont and his family. The 102-room residence was designed in the style of a Louis XVI chateau, modified by antebellum influence. It remained the family domicile until the death of Alfred’s third wife Jessie Ball duPont in the 1970s, after which it was converted into a house museum.
A master planning process produced guidelines for phased architectural and building systems improvements to the mansion and gardens. BBA participated in the planning and restoration phases of the project.
The extensive historic restoration project included replacement of electrical systems and upgrades and expansion of the HVAC and life safety systems. The existing steam boilers and the entire building were converted to hot water, including radiation and air-handling units. A new mist-type fire protection system limits the amount of water used to extinguish a fire in order to protect the irreplaceable objects in the museum collection from fire and water damage. Concurrent with this work, the magnificent gardens surrounding the mansion were also restored, including upgrades to the many fountains.