This list is intended to be a complete compilation of properties and districts listed on the National Register of Historic Places in Rensselaer County, New York, United States. Seven of the properties are further designated National Historic Landmarks.
The Octagon House is a historic octagon house at 21 Spring Street in Danbury, Connecticut, United States. It is considered the best octagon house of those that survive in Connecticut. In 1973 it was added to the National Register of Historic Places to avert its demolition in urban renewal.
The Octagonal Poultry House, also known as the Walter P. Taylor Octagon, is a historic octagonal farm building located in Cold Spring, in Lower Township in Cape May County, New Jersey, United States. It was built to house hens, who supposedly like to nest in corners. Eventually it became a children's playhouse. Today the broom maker works there at Historic Cold Spring Village. Historic Cold Spring Village originally used it as a storage shed, but eventually recognized its potential as a good place to learn about the art of needlework and crocheting.
The Octagon House is a historic octagon house in Reading, Massachusetts. Built in 1860 by Doctor Horace Wakefield, it is a distinctive variant of the type, executed as a series of small octagonal shapes around a central cupola. The building is fashioned from large, heavy timbers in the manner of a log cabin, with long first-floor windows. The porches and eaves have heavy zigzag trim and brackets, some of which have carvings resembling gargoyles.
The William Bryant Octagon House is an historic octagon house located at 2 Spring Street in Stoneham, Massachusetts. Built in 1850, it is the best-preserved of three such houses built in the town in the 1850s. It was listed on the National Register of Historic Places in 1984.
The Nathan B. Devereaux Octagon House is an historic octagonal house located at 66425 Eight Mile Road in Northfield Township, Washtenaw County, Michigan. The house is one of only three extant octagonal houses in Washtenaw County, and remains in excellent and near original condition. It was placed on the National Register of Historic Places in 2003.
The Langworthy House, also known as the Octagon House, is an historic building located in Dubuque, Iowa, United States. Built in 1856, it was designed by local architect John F. Rague for local politician Edward Langworthy. The two-story brick home features tall windows, a columned entry, and a windowed cupola. Langworthy and three of his brothers were among the first settlers in Dubuque. They were partners in a lead mine, helped to build the territorial road between Dubuque and Iowa City, they farmed, invested in real estate, and they owned a steamboat and a mercantile exchange. The house has been passed down through Langworthy's descendants. It was individually listed on the National Register of Historic Places in 1975, and it was included as a contributing property in the Langworthy Historic District in 2004.
The Kinney Octagon Barn was a historic agricultural building located just north of Burr Oak, Iowa, United States. Lorenzo Coffin was a stock breeder and the farm editor of the Fort Dodge Messenger. He is thought to have built the first round barn in Iowa in 1867. The modified hip roof and heavy timber construction of this barn, built in 1880, suggests that it was a Coffin-type octagon barn. It was added to the National Register of Historic Places on November 19, 1986. It has subsequently been torn down.
The Roberts Octagon Barn built in 1883 is an historic octagonal barn located on CR W62 near Sharon Center, Johnson County, Iowa. On June 30, 1986, it was added to the National Register of Historic Places.
Harris Farm is a historic home and farm complex located at Walkersville, Frederick County, Maryland, United States. The main house was built in 1855, and is a three-story center plan house in predominantly late Greek Revival syle, with some Italianate elements. The agricultural complex consists of a bank barn with an attached granary; a second frame barn that shares an animal yard with the bank barn; a row of frame outbuildings including a converted garage, a workshop, and a chicken house. There is also a drive-through double corn crib; and a frame pig pen from 1914. The 20th-century buildings consist of a frame poultry house, a dairy barn with milk house and two silos, and an octagonal chicken coop. A lime kiln is located on the edge of the property. The property is preserved as part of the Walkersville Heritage Farm Park.
The House at 26 Francis Avenue in Wakefield, Massachusetts is a Colonial Revival octagon house. The shingle-clad wood-frame house rests on a high fieldstone foundation, is 2 stories at its rear and 1-1/2 in front, and has the appearance of a square house with four square sections projecting diagonally from each of its corners. The house has a Craftsman/Bungalow-style hip-roofed dormer with diamond-paned windows, and its main entrance is oriented diagonally toward the corner, under a porch supported by round columns.
The Henry H. Smith/J.H. Murphy House is a historic building located on the east side of Davenport, Iowa, United States. It was listed on the National Register of Historic Places in 1983. In 1997 it was listed on the Davenport Register of Historic Properties as the Octagon House.
The Polygonal Barn, Van Buren Township was a historic building located in Van Buren Township in rural Jackson County, Iowa, United States. It was built in 1920 by Gus Klenney as a sale barn. They house livestock that are shown and sold to buyers. It is not known what livestock were sold here. The building was octagonal in shape and measured 50 feet (15 m) in diameter. It was listed on the National Register of Historic Places in 1986. The structure has subsequently been torn down.
Farmington is a house near Charlottesville, in Albemarle County, Virginia, that was greatly expanded by a design by Thomas Jefferson that Jefferson executed while he was President of the United States. The original house was built in the mid-18th century for Francis Jerdone on a 1,753-acre (709 ha) property. Jerdone sold the land and house to George Divers, a friend of Jefferson, in 1785. In 1802, Divers asked Jefferson to design an expansion of the house. The house, since greatly enlarged, is now a clubhouse.
The William H. Phipps House is a historic house located in Hudson, Wisconsin. It was added to the National Register of Historic Places on June 18, 1987.
The Brill Octagon House is a historic octagon house at Capon Springs and McIlwee Roads in Capon Springs, West Virginia. It is a two-story wood-frame structure, that is actually cruciform in shape, but is given an octagonal appearance by the presence of two-story triangular porches that join the corners of the cross. The house was built about 1890 by one of a father-son pair, both named Elias Brill. The elder Brill, a more likely candidate as its builder, was a farm laborer, and was according to family lore guided in the building's design by an architect who was a summer guest at the Capon Springs Resort. The design is apparently a throwback to the briefly popular octagon house movement led by Orson Squire Fowler in the 1850s.
The Dr. J.O. and Catherine Ball House is a historic building located in Mount Pleasant, Iowa, United States. In 1892 this was one of three houses designed by George F. Barber's mail-order architectural firm that was being built in town, and it was the most elaborate of the three. The house is an enlargement of Barber's more expensive plans for design no. 33 from his 1891 book. The 2½-story frame Queen Anne features an irregular plan, a brick-faced limestone foundation, and an octagonal tower with an ogee shaped roof. The circular window on the second story projection is framed with three balconies, one above and one on either side. The wrap-around porch has a projecting gable roof supported by turned columns. A two-story bay window is located on the east elevation. It was also the first house in Mount Pleasant that was totally reliant on electricity for lighting. It was built for Dr. J.O. Ball, a dentist, who was active in civic improvements in Mount Pleasant. The house was listed on the National Register of Historic Places in 1986.
The Bird Octagonal Mule Barn, in Shelby County near Cropper, Kentucky, was built in about 1880. It was listed on the National Register of Historic Places in 1988.
The Landsberger-Gerhardt House, also known as the Fite-Anderson House, is a historic house in Murfreesboro, Tennessee, U.S.. It was built in the Antebellum era for a merchant. It is listed on the National register of Historic Places.
