| Site clean up and removal of materials at the Province House building.700840862 | Public Services and Procurement Canada | 23 000 $ | 10 oct. 2025 |
| Office buildings700426739 | Public Services and Procurement Canada | 23 920 $ | 12 déc. 2018 |
| DUFFY CONSTRUCTION LTD (E0226-111673/001/PWC~000)E0226-111673/001/PWC | Public Works and Government Services Canada | 17 745 $ | 20 sept. 2010 |
| DUFFY CONSTRUCTION LTD (EC015-103606/001/PWB~001)EC015-103606/001/PWB | Public Works and Government Services Canada | 161,4 k $ | 25 févr. 2010 |
| DUFFY CONSTRUCTION LTD (EC015-103606/001/PWB~000)EC015-103606/001/PWB | Public Works and Government Services Canada | 161,4 k $ | 25 févr. 2010 |
| DUFFY CONSTRUCTION LTD (E0226-102208/001/PWC~001)E0226-102208/001/PWC | Public Works and Government Services Canada | 733,6 k $ | 26 oct. 2009 |
| DUFFY CONSTRUCTION LTD (E0226-102208/001/PWC~000)E0226-102208/001/PWC | Public Works and Government Services Canada | 733,6 k $ | 26 oct. 2009 |