| 1501 | Building & Construction Sealants | Company Product |
| 1502 | Building & Roofing Mastic | Company Product |
| 1503 | Building Automation, Industrial & Process Control Systems | Company Product |
| 1504 | Building Blocks | Company Product |
| 1505 | Building Cleaning Service | Company Product |
| 1506 | Building Coating | Company Product |
| 1507 | Building Designers | Company Product |
| 1508 | Building Finishes | Company Product |
| 1509 | Building Joint Sealants | Company Product |
| 1510 | Building Maintenance | Company Product |
| 1511 | Building Maintenance Equipment | Company Product |
| 1512 | Building Management | Company Product |
| 1513 | Building Management Systems (bms) | Company Product |
| 1514 | Building Material | Company Product |
| 1515 | Building Materials | Company Product |
| 1516 | Building Materials Retailers | Company Product |
| 1517 | Building Models | Company Product |
| 1518 | Building Painters | Company Product |
| 1519 | Building Painting | Company Product |
| 1520 | Building Paints | Company Product |
| 1521 | Building Paper | Company Product |
| 1522 | Building Repair Contractors | Company Product |
| 1523 | Building Restoration | Company Product |
| 1524 | Building Safety | Company Product |
| 1525 | Building Steel Structure Fabricators | Company Product |
| 1526 | Building Structure Steel Fabricators | Company Product |
| 1527 | Building Supplies | Company Product |
| 1528 | Building Surveyors | Company Product |
| 1529 | Building Water Supply Pumps | Company Product |
| 1530 | Building Wrecking Contractors | Company Product |