| Answer | Crossword Clue |
|---|---|
| SUPTS | Building caretakers: Abbr. |
| SUPERS | Building caretakers |
| HOSP | Medical building: Abbr. |
| APTS | Building units: Abbr. |
| LIB | Public building: Abbr. |
| GPO | Government building: Abbr. |
| ADDN | Building annex: Abbr. |
| OBS | Science building: Abbr. |
| ARS | Military building: Abbr. |
| GPO | Main mail building: Abbr. |
| SUPT | Apartment building employee (Abbr.) |
| ESTD | Abbr. on a historic building |
| ESTAB | Abbr. on a college building |
| STE | Abbr. in many an office building address |
| STE | Part of an office building address: Abbr. |
| STE | Abbr. on a letter to an office building |
