St. Marie's Builders, L.L.C. builds in The Preserves at Big Chestnut community in Leonardtown, MD. There are 22, private, wooded lots in The Preserves at Big Chestnut subdivision. Lots are sold separate of a house package and are to-be-built to your custom needs. A new construction loan is needed to build in this community. To learn more about new construction loans, visit our FAQs.