– Oct 23, 2006
| Number | County | Town | Size | Built | Verif | GPS | Description |
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| CT-01-01 | Fairfield | Bridgeport | ca 1860 | ? | In Bridgeport. At the corner of Burnum & Harriet Sts. Barnum-Suhren octagon house. It was built by P.T. Barnum. He had heard about the new 8-sided houses and decided he had to have one built. It is of grout construction with a porch encircling the structure. The cupola is octagon with a window in each side. | ||
| CT-01-02 | Danbury | 1852 | ? | Octagon house in Danbury at 21 Spring St. 3 story, grout construction with walls about 12" thick. An elaborately decorated porch encircles the house on the second and third floors. Now an apartment building. | |||
| CT-01-03 | Greenwich | 1850s | Gone | GONE | In Greenwich. On Millibank Av. Octagon, removed to make room for the Greenwich hospital. | ||
| CT-01-04 | Greenwich | 1850s | ? | In Greenwich. On Steamboat Rd. Wellstood-Hansen, octagon. | |||
| CT-01-05 | Stamford | ? | Octagon house at 120 Strawberry Hill Av. | ||||
| CT-01-06 | Bridgeport | 2001 | 09-2006 | N41 10.39 W73 11.25 | In Bridgeport. On the SE side of I95 at exit 27 at 600 Main St. Arena at Harbor Yard, oval bldg. | ||
| CT-02-01 | Hartford | East Hartford | ? | In East Hartford. At 159 Naubric St. Octagon, 2-story, solid exterior walls made of 1x5 & 1x4 boards laid flat and nailed together. The 4 and 5 inch boards were laid alternatively to provide grooves 1 inch wide and ½ inch deep on each side to hold the plaster which was applied directly to the wall on the interior. The exterior walls are covered with clapboard. | |||
| CT-02-02 | Rocky Hill | 09-2006 | N41 39.12 W72 39.39 | In Dinosaur State Park SW of Rocky Hill, Rocky Hill Township. CT99 (Main St.) S. 0.7 miles from jct with CT160 (Elm St.) in Rocky Hill, W. on CT411 (West St.) 0.9 miles to the park on the S. side of the road. 5 sided bldg, geodesic roof. | |||
| CT-03-01 | Litchfield | Woodbury | ? | N. of Woodbury on US6 near the Woodbury-Southbury township line. Octagon, large frame with a cupola. The exterior walls are covered with vertical boards. Surrounded by too many trees to get a good photo. | |||
| CT-03-02 | New Milford | ? | Octagon building along US7, between New Milford & Brookfield. Has been a display room and a store. It is located near a golf course where it is now used as a storage room. | ||||
| CT-03-03 | Washington | 1850 | ? | Nettleton-Dorr octagon house located on Nettleton Hollow Rd., off CT47. It is covered with asbestos shingles. The house is hidden behind a great deal of overgrowth and trees, and is hard to see or photograph. | |||
| CT-03-04 | Washington Depot | 1865 | ? | Octagon house. Take the road directly across from the Dorr house (CT-03-03) and go up the hill. At the top, take the blacktop to the right. | |||
| CT-03-05 | New Milford | 09-2005 | N41 33.09', W73 25.08 | S. of New Milford, New Milford Township. US7/202 S. 1.7 miles from jct with US7 & US202 (Bridge St.) just W. of New Milford to the bldg on the W. side of the road. Union Savings, octagon bldg, brick, cupola sculpted into roof. | |||
| CT-04-01 | Middlesex | Cromwell | 31' | 1858 | ? | N. of Cromwell. CT99 N. from Cromwell to the Seminary. 3-story, exterior is of grout. | |
| CT-04-02 | Portland | 1853 | ? | In Portland. At 24 (maybe 26) Marlborough St., which is CT66. Octagon house, built of brownstone. [Williams - NRHP] | |||
| CT-04-03 | Portland | ? | In Portland. At 28 Marlborough St., which is CT66. Octagon house. [Stancliff - NRHP] | ||||
| CT-04-04 | East Hampton | 1837 | ? | Octagon house. From Portland take CT66 (Marlborough Pike) E. to CT16. Take CT16 until you come to the house on the left. 3-story, but from the front it is only 2 stories. The walls are built of bricks and concrete and covered with stucco. The wide projecting cornice is supported at each angle by a large bracket. | |||
| CT-04-05 | East Hampton | ? | Octagon house. Located on the street on the E. side of the school. An L has been added, but this doesn't take away from the octagon appearance. The house was built shortly after the Civil War. | ||||
| CT-04-06 | East Haddem | ? | Octagon house in town. Exact location not known. [No such town - DJT] | ||||
| CT-04-07 | East Haddem | ? | Octagon house , nest door to CT-04-06. | ||||
| CT-05-01 | New Haven | Guilford | 1856 | ? | In Guilford. At 88 Fair St. Octagon, the exterior walls are covered with wooden shingles, cupola on the low-pitched roof. | ||
| CT-05-02 | Meriden | 1898 | Gone | GONE | In Meriden. At 30 Franklin St. Octagon. Demolished in 1970 to make room for a new highway. | ||
| CT-05-03 | New Haven | 1850s | Gone | GONE | In New Haven. Located at the NW corner of Temple & Grove Sts. Octagon. | ||
| CT-06-01 | New London | Mystic | 2000 | N41 21.08 W71 58.67 | In Mystic. W Mystic Av. S. 1.5 blocks from jct with US1 in Mystic to the house at 8 W Mystic Av. Octagon house, 2-story, white, flat roof, large windowed cupola w/flat roof, porch around front half. | ||
| CT-06-02 | West Mystic | Gone | GONE | An octagon house built for a retired sea captain has been torn down. | |||
| CT-07-01 | Tolland | Willimantic | 06-2004 | N41 43.14 W72 16.81 | W. of Willimantic, Columbia Township. CT66 W. 2.7 miles from jct with PA32 (Main St.) on the W. side of Willimantic to the bldg on the S. side of the road at the jct with US6. 10 sided bldg, used car dealership, each side has a garage door, tall windowed & louvered cupola w/ornate roof. | ||
| CT-08-01 | Windham | Willimantic | 150' | ? | Octagon chicken house. Built during WW2 to raise broilers. Location not known. |