 | BØIFOT ELEKTRO AS | 980379191 | KRISTIANSUND |
| BØ INSTALLASJON AS | 984971109 | MIDT-TELEMARK |
| BOIT AS | 914391768 | OSLO |
| BOKANDER RØRTEKNIKK AS | 917592810 | DRAMMEN |
| BOKEMO AS | 931901877 | OSLO |
| BOKK AS | 915514146 | KLEPP |
| BØLE BYGG AS | 988240087 | SIGDAL |
| BØLGEBLIKK ARKITEKTER AS | 939975012 | OSLO |
| BOLIG & BEDRIFT VVS AS | 995232502 | ASKØY |
| BOLIGBYGG AS | 979689241 | ASKER |
| BOLIGBYGGELAGENES BOSERVICE AS | 983549233 | SKIEN |
| BOLIGBYGGELAGET USBL | 950285680 | OSLO |
| BOLIGBYGG FOLLO ENTREPRENØR AS | 922613516 | ENEBAKK |
| BOLIGCONSULT AS | 990892652 | RÅDE |
| BOLIG & EIENDOM AS | 917357161 | ALVER |
| BOLIGENTREPRENØREN AS | 925757616 | SKIEN |
| BOLIG GRUPPEN BYGG AS | 822807852 | MALVIK |
| BOLIGHUS AS | 992901799 | LINDESNES |
| BOLIGLEVERANDØREN KARMØY AS | 970973443 | KARMØY |
| 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 |
| BOLY BYGG AS | 926028162 | KLEPP |
| BOMA ENTREPRENØR AS | 826504102 | GRAN |
| BOMEKAN AS | 985338442 | HOLMESTRAND |
| BO MER BYGGTJENESTER AS | 934150058 | VESTBY |
| BO MER PRODUKSJON AS | 934150120 | VESTBY |
| 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 OG MASKIN AS | 918014683 | BERGEN |
| BONGO SITEDATA | 924513837 | ALTA |
| BONOVO BYGG AS | 933059251 | HARSTAD |
| BONSTAD ATLE | 969931109 | LARVIK |
| BOPLAN ENTREPRENØR AS | 870904622 | GJERDRUM |
| BOPLASS AS | 992366370 | SOLA |
| BORDAL AS | 927106191 | RISØR |
| 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 |