| Answer | Crossword Clue |
|---|---|
| ELL | Building addition, sometimes |
| ANNEX | Building addition |
| WING | Building addition |
| ELL | Building addition |
| ANNEX | Building addition. |
| ANNEX | Addition to a building |
| ELL | Addition to a building. |
| ANNEX | Addition to a building. |
| ELL | Right-angled building addition |
| ELL | 90-degree building addition |
| ELL | Letter-shaped building addition |
