 | NOKAS TEKNIKK SØR AS | 979276141 | TØNSBERG |
| NØKKEL-FERDIG AS | 995702444 | HOLMESTRAND |
| NØKLAND RØRLEGGERSERVICE AS | 915514758 | LYNGDAL |
| NØKLEBY EIENDOMSUTVIKLING AS | 919233400 | FREDRIKSTAD |
| NOLA HUS AS | 998501288 | TRONDHEIM |
| NOPEK ELEKTRO AS | 968958356 | LIER |
| NORACTOR AS | 930846589 | LILLESTRØM |
| NOR AGGREGATES AS | 915058493 | VINDAFJORD |
| NORALF REILSTAD | 970386203 | STAVANGER |
| NORAVIND BYGG AS | 928823695 | ØYGARDEN |
| NORAX TYNSET AS | 984697082 | TYNSET |
| NORBECK ENT AS | 994390902 | OPPDAL |
| NORBECK ENTREPRENØR AS | 933455211 | OPPDAL |
| NORBECK RØR AS | 929648870 | ULLENSAKER |
| NORBYGG AS | 923728902 | SARPSBORG |
| NORBYGG TRONDHEIM AS | 920335772 | TRONDHEIM |
| NORCONSULT NORGE AS | 962392687 | BÆRUM |
| NORDAL BYGGSERVICE AS | 917698953 | TØNSBERG |
| NORDAL MASKIN AS | 990800421 | LOM |
| NORDAN RUBICON AS | 971112298 | KLEPP |
| NORD ARKITEKTUR AS | 986692959 | BÆRUM |
| NORDÅS BETONGFORM AS | 917109524 | EIGERSUND |
| NORDASFALT AS | 950501480 | BODØ |
| NORDAVIND ARKITEKTUR AS | 924489235 | TRONDHEIM |
| NORDBÆK BYGG AS | 820978382 | OSLO |
| NORDBALTIC AS | 995641550 | ÅLESUND |
| NORD-BERG AS | 959618267 | ULSTEIN |
| NORDBØ BYGG AS | 912792730 | STAVANGER |
| NORDBOHUS ASKER OG BÆRUM AS | 979222793 | ASKER |
| NORDBOHUS BYGGSERVICE AS | 838064132 | VERDAL |
| NORDBOHUS INNLANDET AS | 996600319 | GJØVIK |
| NORDBOHUS KONGSVINGER AS | 969041006 | KONGSVINGER |
| NORDBOHUS MODUM AS | 989717588 | MODUM |
| NORDBOHUS ROMERIKE AS | 921744099 | LILLESTRØM |
| NORDBOHUS SOGN AS | 982725216 | SOGNDAL |
| NORDBOHUS TG BYGG AS | 913459555 | TYSVÆR |
| NORDBOLIG HAMAR AS | 964385211 | HAMAR |
| NORDBOLIG INNLANDET AS | 987995998 | HAMAR |
| NORDBØ MASKIN AS | 912628930 | KVITSØY |
| NORDBØ MASKIN AS | 969042088 | ASKER |
| NORDBØ OG SEGLEM AS | 966891483 | HAUGESUND |
| NORD BYGG & BETONG AS | 897153602 | PORSANGER |
| NORDBYGGSERVICE AS | 997284704 | OSLO |
| NORDBY MASKIN AS | 957804438 | NANNESTAD |
| NORDEC OY | 922573972 | |
| NORD EIENDOMSTJENESTER AS | 927456214 | ÅS |
| NORDEN BYGGTJENESTE AS | 814108252 | STANGE |
| NORDENGEN AS | 931561537 | NANNESTAD |
| NORDFJORD HUS AS | 921174152 | STRYN |
| NORDFJORD TAKST CONSULTING AS | 813059282 | STAD |