Named after Hugh Percy, 4th Duke of Northumberland, who was Lord Lieutenant 1829-30
| Year | Architect | Building |
| 1856 | Deane & Woodward | St Stephen's Schools |
| - | - | Cervantes Institute |
| - | - | Ulster Bank |
| - | - | Former UCD Veterinary School Demolished |
| 1964 | John MacL. Johansen | United States Embassy |
| 1966 | Lardner & Associates | Hume House |
| 1967 | McDonnell & Dixon | Carrisbrook House |
| 1967 | Brian Hogan | Lansdowne House |