 | LP BYGG AS | 997129849 | RÆLINGEN |
| LP EIENDOM AS | 988813699 | NES |
| LPO ARKITEKTER AS | 934007514 | OSLO |
| LP RØR AS | 990019150 | KONGSBERG |
| L S BYGG AS | 935205336 | SANDNES |
| LS ENTREPRENØR AS | 989308106 | KRISTIANSAND |
| LT MASKIN DRIFT AS | 920618251 | LINDESNES |
| LUCRO BYGG AS | 911839709 | GRIMSTAD |
| LUDVIG JENSEN AS | 927943808 | KRISTIANSAND |
| LUDVIG KAMPERHAUG AS | 926816179 | SARPSBORG |
| LUDVIGSEN BYGG AS | 922188092 | ØYGARDEN |
| LUDVIGSEN MASKIN OG TRANSPORT AS | 995688743 | BJØRNAFJORDEN |
| LUDVIK LØVIK MASKIN AS | 962987982 | SUNNFJORD |
| LUFTKVALITET AS | 947022148 | OSLO |
| LUISA TREFIBERISOLERING AS | 922878358 | FÆRDER |
| LUKA HUS SRODECKI | 826347872 | VADSØ |
| LUKAS BETONG AS | 922592861 | LILLESTRØM |
| LUMON NORGE AS | 981888863 | LILLESTRØM |
| LUN ARKITEKTER AS | 932763885 | ASKER |
| LUNDAL SERVICE AS | 920421601 | BERGEN |
| LUNDAMO BYGG AS | 982891701 | MELHUS |
| LUNDBAKKEN BYGG AS | 928351262 | RINGEBU |
| LUNDBERG OG SÆTERÅSEN AS | 993784214 | HURDAL |
| LUND BYGG LILLESTRØM AS | 918307605 | LØRENSKOG |
| LUNDBY OG RYGG AS | 917285527 | DRAMMEN |
| LUNDE ANLEGG | 981668790 | BJØRNAFJORDEN |
| LUNDE BYGG AS | 914087457 | SKIEN |
| LUNDE ENTREPRENØR | 923573186 | RINGEBU |
| LUNDE MASKINSTASJON AS | 927491591 | SKIEN |
| LUNDER AS | 985338558 | NES |
| LUND HAGEM ARKITEKTER AS | 957251471 | OSLO |
| LUND & REISTAD AS | 879351642 | SIGDAL |
| LUNDSETT & WALLE DYKKERSERVICE AS | 929027256 | BAMBLE |
| LUND+SLAATTO ARKITEKTER AS | 943436347 | OSLO |
| LUNDVOLL MASKINSTASJON AS | 980868281 | LYNGEN |
| LUNDVOLL SERVICE AS | 926425781 | LYNGEN |
| LUNE BYGG AS | 928003027 | PORSGRUNN |
| LUNNER KOMMUNE | 961381452 | LUNNER |
| LUSPARKEN ARKITEKTER AS | 975801950 | TRONDHEIM |
| LUSTER ENERGI AS | 924528001 | LUSTER |
| LUSTER TRELASTLAGER AS | 995607247 | LUSTER |
| LUTHER & CO AS | 921995415 | ASKER |
| LUX VVS AS | 937195893 | BERGEN |
| LWB ENTREPRENØR AS | 929535251 | NARVIK |
| LY ARKITEKTER AS | 984050259 | KRISTIANSAND |
| LYN ELEKTRO AS | 992824115 | SARPSBORG |
| LYNGBYGG AS | 936591345 | OSLO |
| LYNGDAL FYRINGSSENTRAL AS | 966307358 | LYNGDAL |
| LYNGDAL RØR AS | 916542828 | LYNGDAL |
| LYNGHAUG FJELLSPRENGNING AS | 923003673 | SØRREISA |
| LYNG & LØBERG AS | 914057507 | SKIEN |
| LYNGLUND MASKIN AS | 928285103 | ØYGARDEN |
| LYNGSTAD ARKITEKTER AS | 981238001 | STEINKJER |
| LYNGSTAD BYGG AS | 924359412 | SANDNES |
| LYSAKER BYGGPROSJEKT OG BAD A/S | 929465148 | ØVRE EIKER |
| LYSAKER ELEKTRISKE AS | 920060188 | OSLO |
| LYSAKER & THORRUD AS | 916119712 | DRAMMEN |
| LYSEBO VVS AS | 987255749 | LARVIK |
| LYSELL ENTREPRENØR AS | 998412986 | TØNSBERG |
| LYSEN RØRLEGGERSERVICE AS | 922031088 | BERGEN |
| LYSMESTER`N AS | 986047042 | OSLO |
| LYS OG VARME AS | 977356067 | OSLO |
| LYSPUNKTET AS | 975360296 | OSLO |
| LYSSAND BYGG & BETONG AS | 914634385 | BJØRNAFJORDEN |
| LYSSAND MASKIN | 998887585 | BJØRNAFJORDEN |
| LYSTEKNIKK ELEKTROENTREPRENØR AS | 995971135 | OSLO |
| LYST ELEKTRO AS | 916491840 | OSLO |
| LYWORKS AS | 931962612 | TROMSØ |
| M2K BYGGTJENESTER AS | 935435617 | AURSKOG-HØLAND |
| M3 BETONG AS | 929112091 | KVAM |
| M3 MASKIN AS | 933436098 | PORSGRUNN |
| M4 ENTREPRENØR AS | 926500449 | BÆRUM |
| MAAL ENGINEERING GROUP AL-ABTAH | 836904192 | GRIMSTAD |
| MAD ARKITEKTER AS | 916087578 | OSLO |
| MADSEN ELEKTRO AS | 997391063 | INDERØY |
| MADSEN ENTREPRENØR AS | 934640462 | VESTRE TOTEN |
| MÆLAND BYGG AS | 991951482 | STAVANGER |
| MÆLAND RØR AS | 887574952 | HÅ |
| MÆLEN BLIKK OG VENTILASJON AS | 919653191 | TRONDHEIM |
| MÆLEN MASKIN AS | 919924012 | ORKLAND |
| MAE PROSJEKT AS | 933901637 | LIER |
| MÅGE&NISTAD BYGG AS | 993587753 | KVINNHERAD |
| MAGNA PROSJEKT SØR AS | 823569262 | LINDESNES |
| MAGNAR INSTANES AS | 989995502 | ULLENSVANG |
| MAGNAR LUND MASKIN AS | 989986384 | FLEKKEFJORD |
| MAGNAR SKJÆVELAND MURMESTER | 970112243 | SANDNES |
| MAGNAR STOKKE AS | 914415888 | MELHUS |
| MAGNE DAG BRAGELIEN | 970956808 | SEL |
| MAGNE HAFSTAD AS | 974536935 | SUNNFJORD |
| MAGNE HELLAND AS | 990970203 | BJERKREIM |
| MAGNE HOPE AS ENTREPRENØRFORRETNING | 918366016 | ALVER |
| MAGNE MAGLER WIGGEN SIVILARKITEKTER MNAL AS | 979423705 | OSLO |
| MAGNE OG JAN BERGET ANLEGGSDRIFT AS | 933846539 | ØVRE EIKER |
| MAGNE OPLAND AS | 976755421 | VEFSN |
| MAGNE SVEEN AS | 860318822 | VESTRE TOTEN |
| MAGNUS EICHINGER VASSBOTN | 985305757 | VOLDA |
| MAGNUS TRANDEM AS | 925815349 | INDRE ØSTFOLD |
| MAJO BYGG AS | 831097272 | ALVER |
| MAKE ARKITEKTER AS | 813016702 | OSLO |
| MALAK RØRSERVICE AS | 913916034 | OSLO |