The interior layout of The Grove's historic core has been described as Georgian in design, with a central hallway on the first and second floors flanked by two rooms identical in size. Perhaps the most notable feature of the interior is a spiral staircase from the first to the second floor hallway similar in styling to that of the interior staircase of The Hermitage in Nashville, Tennessee. Other prominent design elements in the interior of the building including decorative pedimented pilaster moldings around the windows and Egyptian marble fireplaces in the first floor parlor and dining room. The first floor window surrounds/casings are canted, with decorative wood paneling covering the brick walls underneath. The doorways going into the first floor rooms from the central hallway also have pedimented pilasters. The rest of the interior spaces are less ornate. There are fireplaces in all of the rooms in the house.