 | KAN RØR AS | 918537503 | HARSTAD |
| KANSTAD TRELAST AS | 980577511 | LØDINGEN |
| KAPH ENTREPRENØR AS | 914949149 | STAVANGER |
| KAPI AS | 916346794 | ASKER |
| KAPLAK AS | 979807988 | TRONDHEIM |
| KARASJOK VVS AS | 987767308 | KARASJOK |
| KÅRE CHRISTENSEN AS | 993505560 | ARENDAL |
| KÅRE ERIKSEN AS | 980149099 | ARENDAL |
| KÅRE HAGEN & CO AS | 927732777 | OSLO |
| KÅRE HALLONEN AS | 994748343 | SØR-VARANGER |
| KÅRE K KRISTENSEN AS | 968010506 | ALTA |
| KÅRE MAGNUS SKJEFTE | 994020315 | OVERHALLA |
| KÅRE STENBERG AS | 913834070 | SURNADAL |
| KARL BRIAN KARLSEN AS | 960995309 | KONGSBERG |
| KARL INGE LØKEN AS | 912421449 | NESBYEN |
| KARL KNUDSEN AS | 975990613 | TRONDHEIM |
| KARL-OVE BJØRNSTAD AS | 971583398 | TRONDHEIM |
| KARLSEN ANLEGG AS | 977541662 | FARSUND |
| KARLSEN BYGGCONSULT AS | 931273280 | KRISTIANSAND |
| KARLSEN BYGGER AS | 933029530 | BJØRNAFJORDEN |
| KARLSEN & NORDSETH ENTREPRENØR AS | 985214034 | NITTEDAL |
| KARLSEN VVS AS | 997023277 | LILLESTRØM |
| KARLSHUSGARASJENE AS | 970601635 | RÅDE |
| KARLSSONS GRAVE OG VEDLIKEHOLD AS | 984064713 | NITTEDAL |
| KARLSSON & SVARTEDAL TØMRERMESTERFORRETNING ANS | 868602422 | NITTEDAL |
| KARLSTADS RØR & VARME / Bjørn H.Karlstad | 989475428 | RINGEBU |
| KARMØY RØRTEKNIKK AS | 993234532 | KARMØY |
| KARMSUND BYGG AS | 925720860 | KARMØY |
| KARSTEIN KRISTIANSEN ENTREPRENØR AS | 962231551 | ANDØY |
| KARSTEN EIKELAND BYGG AS | 891840942 | BERGEN |
| KARTEVOLL AS | 913338383 | KRISTIANSAND |
| KARTVEIT & HEGGØY BRANNSIKKERHET AS | 819546622 | OSLO |
| KÅSA & RINGHUS ENTREPRENØR AS | 891336802 | VINJE |
| KASPAR STRØMME AS | 916369824 | KRISTIANSAND |
| KATO BYGG SERVICE AS | 913158296 | BERGEN |
| KAUTOMASKIN AS | 983168272 | KAUTOKEINO |
| KAY BETONGSAGING AS | 980246930 | HÅ |
| KB ARKITEKTER AS | 982795710 | TØNSBERG |
| KB BLIKK AS | 914341922 | NITTEDAL |
| KB BYGG AS | 812055372 | GILDESKÅL |
| KB ELEKTRO AS | 948625563 | STANGE |
| K.B ENTREPRENØR OG EIENDOM AS | 917716234 | ØSTRE TOTEN |
| KB MASKIN AS | 990477493 | SKIEN |
| K.BØ MASKIN AS | 913577019 | RANDABERG |
| K.B.S AS | 912378233 | OSLO |
| KBS KLIMA OG BYGGSERVICE AS | 886416962 | NORDRE FOLLO |
| KB SPENNTEKNIKK AS | 966074035 | KONGSVINGER |
| KB TAKST AS | 814787192 | PORSGRUNN |
| KC BYGG AS | 988807494 | LILLESAND |
| KD BETONGBYGG AS | 925852570 | NORD-FRON |