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| BOLIGHUS AS | 992901799 | LINDESNES |
| BOLIGLEVERANDØREN KARMØY AS | 970973443 | KARMØY |
| BOLIGMESTEREN AS | 925174092 | SENJA |
| BOLIGOPP AS | 921862164 | TRONDHEIM |
| BOLIGPARTNER INNLANDET AS | 933671410 | HAMAR |
| BOLIG PRO AS | 933881784 | TRONDHEIM |
| BOLIG TAKST OG TEGNING AS | 927456303 | HÅ |
| BOLLINGER + GROHMANN INGENIØRER AS | 915298087 | OSLO |
| BOLSETH GLASS AS | 914701821 | GLOPPEN |
| BOLSTAD AS | 989552856 | BERGEN |
| BOLT BYGGENTREPRENØR AS | 946945544 | OSLO |
| BOLT VEST AS | 929882474 | SANDNES |
| BOLY BYGG AS | 926028162 | KLEPP |
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| BOMEKAN AS | 985338442 | HOLMESTRAND |
| BØMLO BYGGSERVICE AS | 856314022 | BØMLO |
| BØMLO HUS AVD. HAUGESUND AS | 813968592 | KARMØY |
| BØMLO HUS BYGG AS | 998177138 | BØMLO |
| BØMLO MASKIN AS | 923751327 | BØMLO |
| BONES ENTREPRENØR AS | 916798105 | MIDTRE GAULDAL |
| BØNES MUR AS | 918014683 | BERGEN |
| BONGO SITEDATA | 924513837 | ALTA |
| BONOVO BYGG AS | 933059251 | HARSTAD |
| BONSAK JAN ESPEN TØMMERMESTER | 970157492 | GRAN |
| BONSTAD ATLE | 969931109 | LARVIK |
| BOPLAN ENTREPRENØR AS | 870904622 | GJERDRUM |
| BOPLASS AS | 992366370 | SOLA |
| BORDAL AS | 927106191 | RISØR |
| BORE MASKIN AS | 924404442 | RANDABERG |
| BORGAR ANLEGG AS | 998871379 | FREDRIKSTAD |
| BORG ARKITEKTUR AS | 913405862 | HALDEN |
| BORG ARMERING AS | 989997424 | SARPSBORG |
| BORG ASFALT AS | 916611838 | SARPSBORG |
| BORGE & BORGE AS | 964449783 | TØNSBERG |
| BORGEDAL BYGG AS | 997085191 | RINGEBU |
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| BORGEDAL JAN ERIK | 969977109 | RINGEBU |
| BORGE INSTALLASJON AS | 951136662 | ØVRE EIKER |
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| BORGEN ENTREPRENØR AS | 921991509 | DRAMMEN |
| BORGEN RØRLEGGERBEDRIFT AS | 993753998 | EIDSVOLL |
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| BØRGE VEIEN | 926885782 | SKAUN |
| BORG OPPMÅLING AS | 925895350 | TRONDHEIM |