| Name                                                      | Jurisdiction      of Organization |
|-----------------------------------------------------------|-----------------------------------|
| FSP      380 Interlocken Corp.                            | Delaware                          |
| FSP      390 Interlocken LLC                              | Delaware                          |
| FSP      Addison Circle Corp.                             | Delaware                          |
| FSP      Addison Circle Limited Partnership               | Texas                             |
| FSP      Addison Circle LLC                               | Delaware                          |
| FSP      Blue Lagoon Drive Corp.                          | Delaware                          |
| FSP      Blue Lagoon Drive LLC                            | Delaware                          |
| FSP      Bollman Place Limited Partnership                | Massachusetts                     |
| FSP      Collins Crossing Corp.                           | Delaware                          |
| FSP      Collins Crossing Limited Partnership             | Texas                             |
| FSP      Collins Crossing LLC                             | Delaware                          |
| FSP      Congress Center LLC                              | Delaware                          |
| FSP      Dulles Virginia LLC                              | Delaware                          |
| FSP      East Baltimore Street LLC                        | Delaware                          |
| FSP      Eldridge Green Corp.                             | Delaware                          |
| FSP      Eldridge Green Limited Partnership               | Texas                             |
| FSP      Eldridge Green LLC                               | Delaware                          |
| FSP      Forest Park IV LLC                               | Delaware                          |
| FSP      Forest Park IV NC Limited Partnership            | North      Carolina               |
| FSP      Greenwood Plaza Corp.                            | Delaware                          |
| FSP      Hillview Center Limited Partnership              | Massachusetts                     |
| FSP      Holdings LLC                                     | Delaware                          |
| FSP      Innsbrook Corp.                                  | Delaware                          |
| FSP      Investments LLC                                  | Massachusetts                     |
| FSP      Lakeside Crossing I LLC                          | Delaware                          |
| FSP      Liberty Plaza Limited Partnership                | Texas                             |
| FSP      Montague Business Center Corp.                   | Delaware                          |
| FSP      Northwest Point LLC                              | Delaware                          |
| FSP      One Overton Park LLC                             | Delaware                          |
| FSP      Park Seneca Limited Partnership                  | Massachusetts                     |
| FSP      Park Ten Development Corp.                       | Delaware                          |
| FSP      Park Ten Development LLC                         | Delaware                          |
| FSP      Park Ten Limited Partnership                     | Texas                             |
| FSP      Park Ten LLC                                     | Delaware                          |
| FSP      Park Ten Phase II  Limited Partnership | Texas                             |
| FSP      Property Management LLC                          | Massachusetts                     |
| FSP      Protective TRS Corp.                             | Massachusetts                     |
| FSP      REIT Protective Trust                            | Massachusetts                     |
| FSP      River Crossing LLC                               | Delaware                          |
| FSP      Southfield Centre Limited Partnership            | Massachusetts                     |
| FSP      Willow Bend Office Center Corp.                  | Delaware                          |
| FSP      Willow Bend Office Center Limited Partnership    | Texas                             |
| FSP      Willow Bend Office Center LLC                    | Delaware                          |