 | KATO BYGG SERVICE AS | 913158296 | BERGEN |
| KAUTOMASKIN AS | 983168272 | KAUTOKEINO |
| KAY BETONGSAGING AS | 980246930 | TIME |
| 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 |
| K BETONG AS | 934384792 | RANA |
| KBG AS | 932498340 | KINN |
| KB MASKIN AS | 990477493 | SKIEN |
| K.B.S AS | 912378233 | OSLO |
| KB SPENNTEKNIKK AS | 966074035 | KONGSVINGER |
| KB TAKST AS | 814787192 | PORSGRUNN |
| KB VVS AS | 836204662 | GISKE |
| K-C BYGG AS | 835025322 | ÅLESUND |
| KC BYGG AS | 988807494 | LILLESAND |
| KD BETONGBYGG AS | 925852570 | NORD-FRON |
| KEBA CONSULT AS | 827011592 | ÅSNES |
| KELLER GEOTEKNIKK AS | 922736340 | OSLO |
| KELVIN AS | 966777001 | BÆRUM |
| KEM PROSJEKT AS | 827589772 | STEINKJER |
| KEM PROSJEKT MIDT AS | 934376315 | STEINKJER |
| KENCHA BYGGSERVICE AS | 929525493 | TRONDHEIM |
| KENNETH A.V. HILAN | 911928043 | STJØRDAL |
| KENNETH EGGAN AS | 911953633 | TRONDHEIM |
| KENNETH LUNDE | 916541562 | SARPSBORG |
| KEPLA AS | 983792685 | BERGEN |
| KERA ISOLERING AS | 925559792 | OSLO |
| KEROC AS | 912380912 | OSLO |
| KESS VVS AS | 928099946 | ASKØY |
| KES-TEKNIKK AS | 913279557 | SURNADAL |
| KFKPROSJEKT AS | 932373386 | FÆRDER |
| K GANGSØY BYGG AS | 997020200 | VÅGAN |
| 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 |
| KH BYGG & TAKST AS | 925622117 | BÆRUM |
| 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 | FROGN |
| KILLINGSTAD BYGGTEAM AS | 993433195 | DRAMMEN |
| KIMA ARKITEKTUR AS | 991897666 | OSLO |