| Number | County | Town | Size | Built | Verif | GPS | Description |
| RI-01-01 | Bristol | Bristol | 1856 | In Bristol. At 41 High St. Lemuel C. Richmond, octagon house, 2 story, cupola, central chimney, small hexagon kitchen addition on the NW. (N41 39.774 W71 16.270) | |||
| RI-02-01 | Kent | Warwick | In Warwick. 25 S Fair St. Octagon house, 2-story, 2 small roof dormers, one in front & one in back, no cupola. Now a heptagon. (N41 45.638 W71 23.530) | ||||
| RI-02-02 | Warwick | 07-2009 | N41 43.959 W71 26.207 | In Warwick. RI37 E. 0.75 miles from jct with I95 exit 14, S. on US1 (Post Rd.) 0.65 miles to the bldg on the W. side of the road at 1795. Ozzie's Steakburgers, octagon bldg, windowed cupola. | |||
| RI-03-01 | Newport | Newport | 07-2009 | N41 29.176 W71 18.476 | At the Redwood Library in Newport. Bellevue Av. N. 0.2 miles from jct with RI138A (Memorial Blvd) to the library on the E. side of the road at 50. The bldg is in the back of the library. Redwood Library, octagon bldg, bell shaped roof, handle instead of cupola. | ||
| RI-03-?1 | Jamestown | c1888 | S. of Jamestown, Jamestown Township. At 104 Racquet Rd. Daniel S. Newhall, round house, 3 story, flat roof, no cupola. Rebuilt after a 1991 fire. (N41 29.124 W71 21.686) | ||||
| RI-03-?2 | Newport | In Newport. Octagon bldg. (N41 28.639 W71 18.859) | |||||
| RI-03-?3 | Newport | 1929 | In Miantonomi Memorial Park in Newport. WWI Memorial, true round bldg, rock. (N41 30.662 W71 18.600) | ||||
| RI-03-?4 | Newport | In Touro Park in Newport. On the S. side of Mill St. 250' W of Bellevue Av. Newport Tower (Old Stone Mill), true round bldg, stone. (N41 29.149 W71 18.591) | |||||
| RI-04-01 | Providence | Providence | GONE | In Providence. On Ives St. Octagon house. Razed about 1990. | |||
| RI-04-02 | Cranston | c1854 | In Cranston. At 80 Phenix Av. Battey, octagon house, no cupola, central chimney, rectangular addition on the rear. (N41 46.887 W71 28.098) | ||||
| RI-04-03 | Providence | 1855 | In Providence. 669 Public St. Miles B. Lawson,octagon house, 2-story, center chimney. (N41 48.171 W71 25.453) | ||||
| RI-04-04 | Riverside | c1900 | N. of Riverside, East Providence Township. At 21 Sunnyside Av. Octagon house, 2 story, no cupola. Built as the bandstand for the short-lived Boyden Heights Amusement Park. Converted to private residence by 1916. (N41 47.318 W71 22.228) | ||||
| RI-04-05 | Georgiaville | c1865 | In Georgiaville, Smithfield Township. 108 Farnum Pike (RI104). JS Sweet, octagon house, 2 story, flat roof, no cupola. (N41 53.384 W71 30.869) | ||||
| RI-04-06 | Providence | 1855 | In Providence. At 36 Crescent St. Eliza H. Dix, octagon house, 2 story, no cupola, central chimney. (N41 47.506 W71 25.802) | ||||
| RI-04-07 | Providence | 1855 | In Providence. At 63 Elmwood Av. Silas M. Field, octagon house, 3 story, no cupola, central chimney. (N41 48.660 W71 25.412) | ||||
| RI-04-08 | Providence | 1988 | In Providence. At 76 Harrison St. Octagon house, 3 story, aerator. (N41 48.886 W71 25.753) | ||||
| RI-04-09 | Woonsocket | 1865 | In Woonsocket. At 313 Pond St. 12-sided bldg, 2 story, no cupola. Built as part of a gasometer, now houses offices. (N42 00.588 W71 30.698) | ||||
| RI-04-10 | Glendale | S. of Glendale, Burrillville Township. Joslin Rd. (becomes Victory Hwy) S. 0.1 miles from jct with RI102 (Broncos Hwy) in Glendale to the bldg on the W. side of the road. Octagon bldg, 1 story, no cupola. (N41 58.383 W71 37.974) | |||||
| RI-04-11 | Riverside | c1895 | In Crescent Park in Riverside. Bullocks Point Av. S. 0.1 miles from jct with Crescent View Av. to the bldg on the E. side of the road. Looff Carousel, 16-sided bldg. (N41 45.400 W71 21.567) | ||||
| RI-05-01 | Washington | Carolina | 1857 | N41 27.794 W71 39.692 | In Carolina, Richmond Township. RI112 N. 0.7 miles from jct with RI91 (Alton Carolina Rd.) in Carolina to the house on the E. side of the road. Octagon house, 2 story, horizontal wood siding, flat roof, large windowed cupola. Built by Albert S. Potter. |