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 building into condominiums. 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 |
| 03May1978 | John V. O’Neil, trustee, 175 Marlborough Street Realty Trust | 175 Marlborough Condominium | 9059 | 461 |
| 22Dec1977 | Leo T. Hart, trustee, One Seventy Five Marlboro Trust | John V. O’Neil, trustee, 175 Marlborough Street Realty Trust | 9018 | 250 |
| 05Feb1968 | State Street Bank and Trust Company and Sheridan J. Thorup, trustees under the will of Harry Hill Thorndike | Ronald L. Prosser, David T. O’Brien, Donald A. Dean, and Leo T. Hart, trustees, One Seventy Five Marlboro Trust | 8189 | 570 |
| 08Jan1918 | Richard King Thorndike | Harry Hill Thorndike | 4071 | 322 |
| 08Jan1918 | Francis C. Welch and Moses Williams, trustees under the will of George Quincy Thorndike (one-third undivided interest) | Harry Hill Thorndike | 4071 | 321 |
| 16Feb1886 | Charles L. Andrews | George Quincy Thorndike | 1712 | 164 |
| 19Oct1872 | Silas W. Merrill | Charles L. Andrews | 1131 | 57 |
| Transfers of Unimproved Land | ||||
| Date of Deed | Grantor | Grantee | Book | Page |
| 22Jun1871 | Commonwealth of Massachusetts (lot with 25 foot frontage) | Silas W. Merrill | 1058 | 33 |
| Party Wall Agreements | ||||
| Date | Party One | Party Two | Book | Page |
| 18Jun1896 | Charles U. Cotting and Francis C. Welch, trustees under the will of George Quincy Thorndike (owners of 175 Marlborough) | Louisa B. Gaston, Sarah H. Gaston, and William A. Gaston (owners of 177 Marlborough) | 2376 | 577 |
| 15Jun1881 | George B. Upton (owner of 173 Marlborough) | Charles L. Andrews (owner of 175 Marlborough) | 1529 | 113 |
| 01Mar1871 | Peter T. Homer (owner of lot at 173 Marlborough) | Silas W. Merrill (owner of lot at 175 Marlborough) | 1058 | 34 |