Mount Joy/Santa is suspected to have existed as a dependency of "Chews Resolution Manor" as early as 1695. The property is planned for subdivision construction by Winchester Homes. The site plan has been designed so as to maintain the main house and two outbuildings: a stone summer kitchen/slave quarters and a log building.

PHC encourages the opportunity for an adaptive reuse of the main house as a social center for the new subdivision and the two outbuildings as educational interpretive sites.