| OG1 | Civil and industrial buildings | VIII | over €15,494,000.00 |
| OG2 | Restoration and maintenance of protected heritage buildings | VIII | over €15,494,000.00 |
| OG11 | Technological building systems | III bis | up to €1,500,000.00 |
| OS3 | Plumbing and sanitary systems, kitchens, laundries | III | up to €1,033,000.00 |
| OS28 | Heating and air-conditioning systems | III bis | up to €1,500,000.00 |
| OS30 | Internal electrical, telephone, radio-telephone and television systems | IV | up to €2,582,000.00 |
| OS2-A | Decorated surfaces of immovable cultural heritage and movable cultural assets of historical, artistic, archaeological and ethno-anthropological interest | IV | up to €2,582,000.00 |