 | 100 % PAULSEN AS | 997947967 | KARLSØY |
| 1-2 TRE ELEMENTPRODUKSJON AS | 980292738 | TØNSBERG |
| 24/7 RØRLEGGERVAKTEN AS | 926819828 | OSLO |
| 24/7 RØRLEGGERVAKTEN AVD. STAVANGER AS | 927497484 | STAVANGER |
| 24 BYGG AS | 922737193 | BERGEN |
| 2H ELEKTRO AS | 897414562 | NESODDEN |
| 2KVIK BYGG AS | 917546355 | FÆRDER |
| 2 RØRLEGGERE AS | 986512551 | OSLO |
| 2 SNØMENN AS | 992357010 | NORDRE FOLLO |
| 2TAL AS | 955497643 | ALTA |
| 2TAL ELEKTRO AS | 985233632 | LÆRDAL |
| 2TAL UTEMILJØ ANLEGGSGARTNER AS | 919871466 | NARVIK |
| 3B. ENTREPRENØR AS | 918018816 | ØRLAND |
| 3B FLISLEGGER AS | 992784490 | LILLESTRØM |
| 3 BYGG GAUSDAL AS | 995277387 | GAUSDAL |
| 3 - BYGGMESTER AS | 947246852 | ULLENSAKER |
| 3D ARKITEKTER AS | 981490274 | MIDT-TELEMARK |
| 3D BYGG AS | 998894840 | KARMØY |
| 3HUS BYGG AS | 931039113 | SKIEN |
| 3R LANDMÅLING AS | 827128392 | GRANE |
| 3RW ARKITEKTER AS | 977385369 | BERGEN |
| 3S BYGG AS | 923273891 | OSLO |
| 3 T BYGG AS | 918632514 | MODUM |
| 4B ARKITEKTER AS | 921934092 | OSLO |
| 4CONSULT AS | 912801349 | KLEPP |
| 4H-VEST AS | 959807493 | BJØRNAFJORDEN |
| 4TAK AS | 928921727 | TØNSBERG |
| 70 GRADER N ARKITEKTUR AS | 974281325 | TROMSØ |
| 7FJELL ENTREPRENØR AS | 912102262 | BERGEN |
| 90 GRADER AS | 928470679 | OSLO |
| A1 ARKITEKTER AS | 925895652 | SUNNFJORD |
| A2B DESIGN PARTNER AS | 996667502 | ÅLESUND |
| A2 BYGG AS | 917634874 | NARVIK |
| A38 ARKITEKTER AS | 915891284 | BÆRUM |
| AAB AS | 959748535 | ÅS |
| AABERG EIENDOMSDRIFT AS | 994066072 | OSLO |
| AABOEN AS | 974394480 | SKJÅK |
| AABY BYGG & LAFT ENTREPRENØR AS | 930932043 | FLÅ |
| AADLAND OG GUNDERSEN BYGG AS | 980612848 | STORD |
| AAHEIM MASKINER & TRANSPORT AS | 980453030 | LESJA |
| AAKNES OPPMÅLING AS | 923983260 | ÅFJORD |
| AAKRE AS | 913846192 | STAVANGER |
| AALAND AS | 988950548 | ÅMLI |
| AALMO AS AUTORISERT ELEKTROENTREPRENØR | 960121163 | TRONDHEIM |
| AAMODT BYGG AS | 914852439 | KRISTIANSAND |
| AAMODTS BLIKK OG VENTILASJON AS | 991872345 | KRISTIANSAND |
| AAMODT VVS AS | 980679551 | KRISTIANSAND |
| AANDAL & HAUGLAND BYGG AS | 915275974 | MOSS |
| AANENSEN BYGG AS | 927473674 | RISØR |
| AANERUD ENTREPRENØR AS | 966168838 | OSLO |