 | KRISBYGG SERVICE AS | 915151752 | DRAMMEN |
| KRISTENGÅRD ISOLASJON OG BLIKK | 987648163 | LILLESAND |
| KRISTENSEN MASKIN AS | 976244176 | SALTDAL |
| KRISTIAN DAHL AS | 926820443 | FREDRIKSTAD |
| KRISTIAN G. OLSEN AS | 987023848 | HADSEL |
| KRISTIANSAND KOMMUNE BYUTVIKLING | 974778335 | KRISTIANSAND |
| KRISTIANSAND TAK OG MEMBRAN AS | 926775995 | KRISTIANSAND |
| KRISTIANSEN OG STENSRUD AS | 999594883 | LIER |
| KRISTIANSEN RØR OG MASKIN AS | 916803435 | ALTA |
| KRISTIANSEN RØR & SERVICE | 924937556 | ARENDAL |
| KRISTIANSEN RØRSERVICE AS | 990755086 | NORDRE FOLLO |
| KRISTIANSEN & STØKKET AS | 913588886 | LØRENSKOG |
| KRISTIAN STEENSGAARD RØRTEKNISKE AS | 918887326 | OSLO |
| KRISTIANSUND MUR OG FLIS AS | 919601841 | KRISTIANSUND |
| KRISTOFFER AUNE AS | 927126001 | SVEIO |
| KRISTOFFER LØBBEN | 981565517 | RINGERIKE |
| KRISTOFFERSEN AS | 916607512 | ØVRE EIKER |
| KRISTOFFER SIREVÅG AS | 928746208 | KARMØY |
| KRISTOFFER'S SNEKKERI KRZYSZTOF JASKULA | 997990730 | BØMLO |
| KRITT ARKITEKTER AS | 977528070 | OSLO |
| KRØDEREN ELEKTRO AS | 941163343 | KRØDSHERAD |
| KROGSET BYGG AS | 932359790 | VESTNES |
| KROGSETH AS | 961512506 | SARPSBORG |
| KROGSTAD BACZEWSKI RØR AS | 915441254 | OSLO |
| KROKA EIGEDOM AS | 988197629 | KVINNHERAD |
| KROKEIDE BYGGSERVICE AS | 957629075 | BERGEN |
| KROKSTAD RØR AS | 985806160 | DRAMMEN |
| KRONBYGG AS | 911918242 | ØYGARDEN |
| KROOK & TJÄDER ARKITEKTER AS | 918371486 | OSLO |
| KROON MASKIN AS | 980169227 | NORD-AURDAL |
| KR STENSRUD & SØN AS | 930200794 | OSLO |
| KRÜGER KALDNES AS | 952216155 | SANDEFJORD |
| KRV AS | 912695573 | KRISTIANSAND |
| KRYSTIAN BYGG AS | 928666956 | TRONDHEIM |
| K/S RØR AS | 987150440 | OSLO |
| K&S STAVSENG AS | 923314326 | ÅLESUND |
| K STAVE BYGG AS | 917089787 | SYKKYLVEN |
| KSV SNEKKERSERVICE AS | 912701840 | FREDRIKSTAD |
| KT BYGG AS | 992377666 | KLEPP |
| K. THOMASSEN BYGGTJENESTE | 989471317 | ALTA |
| KTS BYGG AS | 913226305 | NOTODDEN |
| KUBIKK VENTILASJON AS | 919682159 | VERDAL |
| KUCIAK SOLUTIONS | 930945854 | PORSGRUNN |
| KULBRANDSTAD BYGGEFIRMA AS | 920817203 | MELHUS |
| KULDETEKNIKEREN AS | 984035764 | RINGSAKER |
| KULSTAD VVS OG VARMESERVICE | 979229208 | VERDAL |
| KURT BYE AS | 982244749 | STEINKJER |
| KURT HAMRE AS | 938169047 | BERGEN |
| KURT NETSKAR ENTREPRENØR AS | 987841958 | BERGEN |
| KVA BYGGTJENESTER AS | 922974322 | ARENDAL |