The following is an index to property transfer deeds and party wall agreements recorded at the Suffolk County Deed Registry from the original land purchase until conversion of the property into condominium units. Mortgages, trust agreements, and other similar recorded documents are not included. This index is intended as a guide only; actual deeds should be reviewed for details.
| Transfers of Land and Buildings | ||||
| Date of Deed | Grantor | Grantee | Book | Page |
| 18Apr1985 | Swiss Properties, Inc. | Cochrane House Condominium | 11849 | 319 |
| 31Aug1984 | John V. O’Neil, trustee, 257 Sunnywide Trust | Swiss Properties, Inc. | 11128 | 134 |
| 15Aug1983 | Carl L. Crossman and D. Roger Howlett | John V. O’Neil, trustee, 257 Sunnywide Trust | 10483 | 117 |
| 03Jan1983 | D. Roger Howlett (38.52 percent interest) | Carl L. Crossman | 10303 | 23 |
| 09Jul1973 | George K. Menichios Post No. 324, Inc., The American Legion | Carl L. Crossman and D. Roger Howlett | 8644 | 81 |
| 04Sep1945 | Alonzo J. Shadman | George K. Menichios Post No. 324, Inc., The American Legion | 6174 | 39 |
| 28Mar1945 | Bertram Cyril Hargraves | Alonzo J. Shadman | 6143 | 273 |
| 31Jul1941 | Ramelle McKay Cochrane | Bertram Cyril Hargraves | 5938 | 201 |
| 19Nov1920 | F. Douglas Cochrane | Ramelle McKay Cochrane, wife of F. Douglas Cochrane | 4264 | 328 |
| 19Nov1920 | F. Murray Forbes, Robert H. Gardiner, and F. Douglas Cochrane, trustees under the will of Alexander Cochrane | William J. Stober, to the use of F. Douglas Cochrane | 4264 | 324 |
| Transfers of Unimproved Land | ||||
| Date of Deed | Grantor | Grantee | Book | Page |
| 14Jan1886 | Ellen A. Johnson, wife of Henry M. Johnson (lot with 50 foot frontage) | Alexander Cochrane | 1708 | 246 |
| 16Dec1880 | Walter C. Cabot (lot with 50 foot frontage) | Ellen A. Johnson, wife of Henry M. Johnson | 1511 | 154 |
| 05May1879 | Robert W. Emmons, Nathaniel H. Emmons, and Samuel F. Emmons, executors of the will of Nathaniel H. Emmons; Robert W. Emmons, Nathaniel H. Emmons, and Samuel F. Emmons, trustees under said will for the benefit of Elizabeth W. Emmons and others; Robert W. Emmons, Nathaniel H. Emmons, and Benjamin Brewster, trustees under said will for the benefit of Annie W. Brewster and others; and Robert W. Emmons, Nathaniel H. Emmons, Samuel F. Emmons, George B. Emmons, and Arthur B. Emmons, individually (lot with 50 foot frontage) | Walter C. Cabot | 1455 | 305 |
| 20Apr1866 | J. Templeman Coolidge, Franklin Evans, and Charles Henry Parker, trustees (lot with 25 foot frontage) | Nathaniel H. Emmons | 1025 | 190 |
| 20Apr1866 | J. Templeman Coolidge, Franklin Evans, and Charles Henry Parker, trustees (lot with 25 foot frontage) | Nathaniel H. Emmons | 1025 | 189 |
| 29Jan1866 | Boston Water Power Company | J. Templeman Coolidge, Franklin Evans, and Charles Henry Parker, trustees | 871 | 183 |
| Party Wall Agreements | ||||
| Date | Party One | Party Two | Book | Page |
| 28Sep1880 | Nathaniel B. Mansfield and Henry O. Roberts (owners of lot at 255 Commonwealth) | Walter C. Cabot (owner of lot at 257 Commonwealth) | 1506 | 205 |
| 26Apr1880 | Walter Hunnewell (owner of lot at 261 Commonwealth) | Walter C. Cabot (owner of lot at 257 Commonwealth) | 1493 | 633 |