 | KB SPENNTEKNIKK AS | 966074035 | KONGSVINGER |
| KB TAKST AS | 814787192 | PORSGRUNN |
| KC BYGG AS | 988807494 | LILLESAND |
| KD BETONGBYGG AS | 925852570 | NORD-FRON |
| KEBA CONSULT AS | 827011592 | ÅSNES |
| KEIL | 988729329 | BÆRUM |
| KELLER GEOTEKNIKK AS | 922736340 | OSLO |
| KELVIN AS | 966777001 | BÆRUM |
| KEM PROSJEKT AS | 827589772 | STEINKJER |
| KENNETH A.V. HILAN | 911928043 | STJØRDAL |
| KENNETH EGGAN AS | 911953633 | TRONDHEIM |
| KENNETH LUNDE | 916541562 | SARPSBORG |
| KENNETH NORMANN HANSEN | 977187826 | LARVIK |
| KENT ERICHSEN AS | 925262331 | SARPSBORG |
| KEPLA AS | 983792685 | BERGEN |
| KEROC AS | 912380912 | OSLO |
| KESS VVS AS | 928099946 | ASKØY |
| KES-TEKNIKK AS | 913279557 | SURNADAL |
| KETIL ANDRE ASBJØRNSEN | 970932062 | FREDRIKSTAD |
| KFKPROSJEKT AS | 932373386 | FÆRDER |
| KG BYGGKONSULT AS | 911945118 | HVALER |
| KG BYGG OG BETONG AS | 994241613 | HOL |
| KGC NORWAY AS | 827902632 | OSLO |
| KG ELEKTRO AS | 991882979 | ALVER |
| KG SNEKKERSERVICE AS | 912306542 | BRØNNØY |
| K H MASKINER Konrad Andre Halsan | 959409676 | EIDSVOLL |
| KHS ENTREPRENØR INVEST AS | 825269762 | OSLO |
| KIBSGAARD-PETERSEN AS | 920919766 | ÅLESUND |
| KIKIMORA ARKITEKTER AS | 933430138 | TRONDHEIM |
| KILE HÅNDLAFT AS | 989249002 | FYRESDAL |
| KILEN RØR AS | 916025793 | SANDEFJORD |
| KILEN SMIE & BLIKKENSLAGERVERKSTAD AS | 987924594 | KVITESEID |
| KILE STOKHOLM ARKITEKTER AS | 980233618 | OSLO |
| KILLINGMO FRESESERVICE AS | 980883949 | NITTEDAL |
| KILLINGSTAD BYGGTEAM AS | 993433195 | DRAMMEN |
| KIMA ARKITEKTUR AS | 991897666 | OSLO |
| KIME ARKITEKTUR OG LANDSKAP AS | 932339560 | BERGEN |
| KIM STEINSHOLT AS | 985853320 | LARVIK |
| KINOWSKI ENTREPRENØR AS | 920675263 | OSLO |
| KIRKENES BAD & KJØKKEN AS | 974483661 | SØR-VARANGER |
| KIRKESTUEN AS | 916674481 | OSLO |
| KIRKEVOLD BYGG AS | 926755706 | FÆRDER |
| KITSUNE ARKITEKTER AS | 916273657 | OSLO |
| KJÆR MASKIN OG TRANSPORT AS | 922624526 | KRISTIANSAND |
| KJÆRS RØRLEGGERFORRETNING AS | 984892330 | TØNSBERG |
| KJARTAN BEKKESETH VRENNE | 925033243 | NORE OG UVDAL |
| KJARTAN BERTELSEN | 883217322 | KLEPP |
| K. J. BYGG AS | 991551530 | HARAM |
| KJ BYGGSERVICE AS | 917473951 | LILLESTRØM |
| KJELDAAS AS | 877341062 | HOLMESTRAND |