| Answer | Crossword Clue |
|---|---|
| ADDON | Build an annex |
| ELL | Many an annex |
| ELL | Relative of an annex. |
| REVET | Build an embankment. |
| REVET | Build an embankment |
| ERECT | Build an edifice |
| ADDTO | Build an extension on |
| EMBOWER | Build an arbor around |
| BETTERMOUSETRAP | What an inventor might try to build |
| DONOR | One helping to build an endowment fund |
