 | NERNES SNEKKERI & BYGG | 925586935 | BJØRNAFJORDEN |
| NERUM LARS HÅKON | 969088843 | SIGDAL |
| NESBAKK RØR AS | 934943848 | STAD |
| NESBØ MASKIN OG TRANSPORT AS | 915347649 | AURLAND |
| NESBYEN PUKK & BETONG AS | 950392924 | NESBYEN |
| NES BYGG OG PROSJEKTERING AS | 927609150 | VESTBY |
| NES GRAVE OG SPRENGESERVICE AS | 942594615 | OSLO |
| NES HUS & HYTTEBYGG AS | 990375496 | NESBYEN |
| NESLIN BYGG AS | 912155137 | MERÅKER |
| NES MASKINSERVICE AS | 916848110 | NES |
| NESNA MASKINSTASJON AS | 981888936 | NESNA |
| NES RØR AS | 876725622 | RINGSAKER |
| NES RØRLEGGERBEDRIFT AS | 921398433 | NES |
| NES RØRSERVICE AS | 968321811 | NES |
| NESS BYGG AS | 920803512 | SOGNDAL |
| NESSET BYGG AS | 956833876 | MOLDE |
| NESS INDUSTRI AS | 922707596 | TROMSØ |
| NES TOTALDRIFT AS | 928624242 | NES |
| NESTTUN VVS AS | 922157987 | BERGEN |
| NESVIK AS | 998799244 | HÅ |
| NETCO AS | 974478285 | HAMAR |
| NETEL AS | 983096514 | OSLO |
| NETGLASS TOTALFASADE AS | 915286399 | TROMSØ |
| NETLANDSNES ANLEGG AS | 996737802 | KVINESDAL |
| NEUE HEIMAT AS | 922904847 | FROGN |
| NEWSEC PROJECT AS | 984500106 | OSLO |
| NEWSEC PROPERTY ASSET MANAGEMENT AS | 959718482 | TRONDHEIM |
| NFO ELEKTRO AS | 828959352 | STAVANGER |
| NG BYGG AS | 998182409 | ØRLAND |
| NGS MASKIN AS | 998516854 | SVEIO |
| NH MASKIN AS | 976594967 | ASKØY |
| NH MELHUSBYGG AS | 891111932 | MELHUS |
| N.H. TAKST & BYGGRÅDGIVNING AS | 928651703 | VÅLER (ØSTFOLD) |
| NIC JACOBSEN ENTREPRENØR AS | 959524297 | ØYGARDEN |
| NICO BLIKK AS | 913146212 | KRISTIANSAND |
| NICOLAYSEN ANLEGG OG TRANSPORT AS | 964694583 | RÅDE |
| NIDAROS BYGGKOMPETANSE AS | 918629025 | TRONDHEIM |
| NIDAROS GLASS OG MONTASJE AS | 825194282 | TRONDHEIM |
| NIDAROS OPPMÅLING AS | 984430299 | TRONDHEIM |
| NIDARVOLL BYGGSERVICE AS | 992893079 | TRONDHEIM |
| NIDELVEN BYGG AS | 913732979 | TRONDHEIM |
| NIDER AS | 930761737 | FREDRIKSTAD |
| NIELS TORP+ ARKITEKTER AS | 922748705 | OSLO |
| NIKLAS ERIKSEN AS | 826676892 | AURSKOG-HØLAND |
| Nils Aksnes & Co AS | 931669559 | KVAM |
| NILS BURUM | 976052153 | ÅS |
| NILSEN BYGG | 970043950 | BAMBLE |
| NILSENBYGG EIENDOM AS | 991780939 | BAMBLE |
| NILSEN & CO AS | 921260296 | GRIMSTAD |
| NILSEN ELEKTRO AS | 956338948 | HORTEN |