| 1901 | Nos. 6-10 (Consec) and Attached Area RailingsBA1 6FW | Grade II |
| 1902 | Nos. 6-10 (Consec) and Attached Railings, Gates and OverthrowsBA2 4DU | Grade II |
| 1903 | Nos. 6-18 (Even) and Attached RailingsBA2 2AB | Grade II |
| 1904 | Nos. 61 and 63 Shrubbery House (61); Balliol House (63)BA2 4NF | Grade II |
| 1905 | Nos. 63 and 65 Augusta Villa (No.65)BA2 4PH | Grade II |
| 1906 | Nos. 69 and 71 Oriel House (69) and Oriel Villa (69)BA2 4NF | Grade II |
| 1907 | Nos. 6 and 7 and Attached Steps and RailingsBA1 5HB | Grade II |
| 1908 | Nos. 6 and 7 with Boundary Wall and Gate PiersBA2 4ST | Grade II |
| 1909 | Nos. 6 and 7 with RailingsBA1 1HB | Grade II |
| 1910 | Nos 72-84 (Even) Wells Road with Front Boundary Wall and GatewayBA2 3AR | Grade II |
| 1911 | Nos 7 and 8 Including Pintle for AbbeygateBA1 1NW | Grade II |
| 1912 | Nos. 8, 9 and 10 Haringtons HotelBA1 2LB | Grade II |
| 1913 | Nos. 8, 9 and 10 the Royal Oak Public House and Attached Steps and RailingsBA2 4HN | Grade II |
| 1914 | Nos. 8 and 8a and Attached RailingsBA1 2PR | Grade II |
| 1915 | Nos. 8 and 9 Beauford HouseBA1 1HL | Grade II |
| 1916 | Nos. 8 and 9 with RailingsBA1 1HJ | Grade II |
| 1917 | Nos. 8 and 9 with Railings and Gate PiersBA2 4SP | Grade II |
| 1918 | Nos. 9, 10 and 11 Fountain House and Attached Railings and VaultsBA1 5LZ | Grade II |
| 1919 | Nos. 93-99 (Consec) and Attached Wall to the RightBA2 4ED | Grade II |
| 1920 | Oak CottageBA2 4NB | Grade II |
| 1921 | OakfieldBA1 4AW | Grade II |
| 1922 | Oast HouseBA1 6AG | Grade II |
| 1923 | Office Adjoining St John's Ambulance HeadquartersBA2 4DQ | Grade II |
| 1924 | Old Cot Rill CottageBA2 5HX | Grade II |
| 1925 | Oldfield Villa and the CottageBA2 3NE | Grade II |
| 1926 | Old Labour Exchange (Former Weights and Measures Office)BA1 1BS | Grade II |
| 1927 | Old Post OfficeBA2 5JQ | Grade II |
| 1928 | Old RectoryBA2 1RL | Grade II |
| 1929 | Oriel CottageBA1 7AR | Grade II |
| 1930 | Oriel LodgeBA1 7AS | Grade II |
| 1931 | Ormonde HouseBA1 2UN | Grade II |
| 1932 | Ormond LodgeBA1 2XY | Grade II |
| 1933 | Ornamental Garden FountainBA2 6EH | Grade II |
| 1934 | Ornamental Pool in Smallcombe Wood, Approx. 100m West of Combe RoyalBA2 6EZ | Grade II |
| 1935 | Outbuilding Approx 15m West of Lyncombe CourtBA2 4LR | Grade II |
| 1936 | Outbuilding to No. 2 and 3 Perrymead Place (Formerly Known As the Cottage)BA2 5BB | Grade II |
| 1937 | OverlandBA2 5JN | Grade II |
| 1938 | Pair of Arches at Entrance to Royal Avenue From Marlborough LaneBA1 2LX | Grade II |
| 1939 | Pair of Lodges and Attached Walls to the Rear of No 24 Queen StreetBA1 2NN | Grade II |
| 1940 | Pair of Vases Flanking BandstandBA1 2NQ | Grade II |
| 1941 | Paradise House HotelBA2 4PX | Grade II |
| 1942 | Parish Boundary Marker 10m East of No. 199BA2 5DA | Grade II |
| 1943 | Parish Boundary Marker at St7559762404BA2 5DA | Grade II |
| 1944 | Parish Boundary Post in Wall by the Lam BridgeBA1 6RX | Grade II |
| 1945 | ParkfieldBA1 2XP | Grade II |
| 1946 | Park View HouseBA1 2PT | Grade II |
| 1947 | Park VillaBA2 5EE | Grade II |
| 1948 | Part of Queen's Bath, Including `Bridge' Spanning York StreetBA1 1NH | Grade II |
| 1949 | Pavement and Railings Before Nos 13-18BA1 2EN | Grade II |
| 1950 | Pavement and Steps Fronting Edgar BuildingsBA1 2EE | Grade II |