The main house is a -story three-bay main block with a one-story, three-bay kitchen wing on the west and a smaller, newer bedroom wing to the north. Both are built of heavy-hewn post and beam framing and sided in clapboard with a fieldstonefoundation. Both the main block and the kitchen wing have medium-pitched gabled roofs, with the latter's flaring out to the rear, producing a saltbox effect. Cedarshakes cover both roofs. The south-facing front facades of both blocks feature windows and an entrance in the westernmost bay. The main block's door is a board-and-batten piece that retains its original ironwork. There is a single window on the west elevation; on the east is a three-sided projecting bay window added later on. A brickchimney comes up from the roof at the west. Inside, the original side-hall floor plan is intact. Besides the board-and-batten doors, however, many of the finishings and decoration are of later vintage, possibly the early 19th century. Three other contributing resource are located on the property. Two are buildings, an 1870 carriage barn and a smaller shed known as the "garden studio". Both are wood. The last is a structure, the section of the original stone wall around the south and west sides of the property.
History
It is believed that McDowell built the house around 1770; although no records exist to show this, deeds do show that it was that year he acquired from James Humphrey. McDowell was the son of James McDowell, a native of County Longford in Ireland who was one of the few survivors of a malnutrition-plagued Atlantic crossing in 1729 funded by Charles Clinton, grandfather of future New York State governor DeWitt. Bound for Pennsylvania, the survivors landed instead in Cape Cod. Two years later, in 1731, they made their way to the Hudson Valley where they were the first settlers in the area they called Little Britain. Thomas B. McDowell was 44 when he became the first owner of record in 1803. He may have added some of the interior decoration, such as a wooden mantelpiece typical of that era's Federal style homes. Sometime in the 1810s, he rented the house out to James Alexander, another Irish immigrant who was noted in histories of the period for his skill as a weaver. His son Joseph described the parcel as being about at that time. In 1845 Thomas B. McDowell left the house to his son Alexander, who mortgaged it heavily to pay his debts. By this means it eventually became the property of Alfred Denniston, who probably added the east side's bay window. He sold it to Agnes Corwin in 1871. It remained in her family until the late 20th century.
Aesthetics
The McDowell house is a -story "half-house", with minimal fenestration so as to better retain heat in the winter, very typical of Englishvernacular architecture in the rural Hudson Valley during the colonial period. The minimal detail from the original house shows the influence of the waning Georgianstyle. The house may also have been influenced by Thomas McDowell's brief sojourn in New England after his arrival in America. Later styles are evident in some of the alterations. The wooden mantelpiece is a Federal hallmark, probably added during that style's rise in the early 19th century. The projecting bay window on the east is a common Picturesque feature, seen on many Hudson Valley homes built or modified around the middle of that century due to the influence of Newburgh resident Andrew Jackson Downing.
