The house that would become Raynham Hall Museum was built sometime before 1738 as a two-story frame house with central brick chimney, gable roof, flush siding of wide boards and a five-bay façade with an entrance in the middle. The house contained four rooms — two on each level — with a garret or attic under the roof. The first floor consisted of a “hall” and “parlor” that flanked a narrow passage with a winding staircase built around the chimney. On the second floor were two “chambers” that corresponded to the hall and parlor below. Fireplaces opened into all four rooms from the central chimney.
Around 1740, Samuel Townsend built a lean-to section on the north side, or rear, of the house. The addition, which increased the number of rooms to eight, included a kitchen and storage room on the first level and chambers above. The shed roof of the lean-to section extended the rear slope of the main gable roof, creating the distinctive “saltbox” outline.
Architectural and documentary evidence suggest that at least one of the first-floor rooms featured wall paneling. The original parlor fireplace wall appears to have had paneling that extended from floor to ceiling as well as a decorative mantel and overmantel. The mantel, overmantel and parts of the paneling are today incorporated into one of the restored Colonial-period rooms.
No substantial changes were made to the house during the remainder of the eighteenth century. The museum’s collections include a pencil sketch of the house, dating to around 1830, that shows a one-story porch extending the full breadth of the façade. The porch, which must have been added shortly before 1800, seems to be the only improvement made by the Townsends. The sketch clearly depicts the paneled Dutch door that is in place today and dates back to the mid-18th-century house.