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| BR UPPSTAD AS | 918968008 | VALLE |
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| BRYNE ELEKTRISKE AS | 986397582 | TIME |
| BRYNE RØR AS | 886293372 | TIME |
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| BRYNTE MÅSTADSKAUG | 992470518 | INDRE ØSTFOLD |
| B.S BYGG AS | 932997517 | FREDRIKSTAD |
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| BSS BYGGESERVICE AS | 995172194 | NORDRE FOLLO |
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| BS VEST AS | 963144881 | ØYGARDEN |
| BSW CONSULT AS | 832054992 | TROMSØ |
| BT ANLEGG AS | 920254055 | LILLESTRØM |
| BT BYGGSERVICE AS | 925574775 | HOLMESTRAND |
| BTEK DA | 915450733 | KARASJOK |
| BTS-CONSULTING AS | 995673622 | SANDNES |
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