Jonathan Lucas House, Federal architecture house in Charleston, US.

The Jonathan Lucas House on Calhoun Street displays Federal-style architecture with balanced proportions and construction from the early 1800s. The structure showcases typical residential design elements of that period with its classical lines.

Jonathan Lucas Jr., born in England, built the house and developed rice milling machines that spurred rice planting in South Carolina. In 1893 the home became the Riverside Infirmary, part of Memorial Hospital, and was for a time called the Old Jennings House. John Hume Lucas, a family member, purchased Hopsewee on the Santee River in 1844.

The house is named for Jonathan Lucas Jr., an English-born inventor of rice-milling machines whose work spurred rice planting in South Carolina. His family also owned Hopsewee on the Santee River, purchased by John Hume Lucas in 1844. From 1893 the building served as Riverside Infirmary, part of Memorial Hospital, and was for a time called the Old Jennings House.

The house is located on Calhoun Street, a main thoroughfare with several other historic buildings nearby. The location allows visitors to view the exterior while exploring the surrounding area.

The original craftsmanship and building materials remain intact, showing construction techniques used in early 19th-century South Carolina. These details reveal traditional building practices that visitors rarely see elsewhere.