 | MESTERGRUPPEN BOLIGPARTNER AS | 933224813 | HAMAR |
| MESTERKONSULT AS | 922572798 | TRONDHEIM |
| MESTERLANDSKAP AS | 932290014 | TRONDHEIM |
| MESTERLIG-BOLIG AS | 928791726 | KRISTIANSAND |
| MESTERMO VVS AS | 987742542 | KINN |
| MESTER NORD AS | 914279461 | HAMMERFEST |
| MESTER RØR AS | 945148462 | KONGSBERG |
| MESTERRØR AS | 931395246 | LEVANGER |
| MESTER-RØR VVS AS | 996778894 | OSLO |
| MESTER-SERVICE AS BYGG- & TØMMERMESTER TERJE WILHELMSEN | 877207862 | LILLESTRØM |
| MESTERTAK AS | 928489701 | PORSGRUNN |
| MESTERTAKET AS | 922994145 | SANDEFJORD |
| MESTERTAKST AS | 889273542 | STAVANGER |
| MESTERTAK TRONDHEIM AS | 989179241 | TRONDHEIM |
| MESTERTØMRERBYGG AS | 924676337 | TRONDHEIM |
| MESTER VANN OG VARME AS | 920702767 | BÆRUM |
| MESTER-VVS NORBECK | 935686768 | ULLENSAKER |
| MESTER WESTER & CO AS | 914038413 | ASKER |
| MESTRA ENTREPRENØR AS | 982129095 | ELVERUM |
| METACON STÅLBYGG AS | 915243533 | KONGSVINGER |
| META LANDSKAP AS | 926433296 | OSLO |
| METALL BYGG AS | 994864947 | STEINKJER |
| METAMORF ARKITEKTUR AS | 915644740 | STAVANGER |
| METAWELD AS | 988605476 | NORDRE FOLLO |
| METER2 AS | 919097884 | NES |
| METER - ARKITEKTUR AS | 983152317 | FREDRIKSTAD |
| METERSTOKKEN Svein Tøsse | 988817953 | VAKSDAL |
| METKON AS | 831278242 | OSLO |
| METO PRO AS | 990550018 | LÆRDAL |
| METROSTAV NORGE AS | 924549092 | BÆRUM |
| METSÄ DESIGN OG ARKITEKTUR AS | 927946874 | ÅSNES |
| MG ELEKTRO AS | 987027568 | EIGERSUND |
| MG GRAVESERVICE AS | 991097317 | ENEBAKK |
| M. GJERSTAD BETONG AS | 925228338 | BERGEN |
| M-GLASS OG BYGG AS | 935902282 | OSLO |
| MG LINK AS | 930378755 | STAVANGER |
| MGM FLIS & MUR AS | 934469402 | ASKØY |
| M GRØNVOLD AS | 977172497 | RINGSAKER |
| MH ANLEGG AS | 925741108 | KONGSBERG |
| M HAUG & SØNN AS | 987651571 | GRAN |
| MH GRAVING AS | 934642171 | SANDNES |
| MIDBØE AS | 951838756 | STAVANGER |
| MIDGARD ARKITEKTUR JITKA HOLANOVÁ | 933682927 | HORTEN |
| MIDJE MASKIN AS | 992437065 | AURLAND |
| MIDT-BYGG AS | 915775535 | TRONDHEIM |
| MIDTDALEN RØRLEGGER BEDRIFT AS | 919254750 | SØR-FRON |
| MIDT ELEKTRO AS | 990727465 | MIDTRE GAULDAL |
| MIDTFYLKET ENTREPRENØR AS | 921529740 | MODUM |
| MIDTLI OG SVELSTAD BYGG AS | 992154675 | SEL |
| MIDT NORGE ENTREPRENØR AS | 974391090 | GRANE |
| MIDT-NORSK MUR AS | 932992426 | TRONDHEIM |
| MIDT-NORSK VVS AS | 898290182 | INDERØY |
| MIDTSKOGEN MASKIN AS | 916487363 | ELVERUM |
| MIDT-TELEMARK BRANNSERVICE AS | 977507030 | MIDT-TELEMARK |
| MIDT-TELEMARK BYGG AS | 985625506 | MIDT-TELEMARK |
| MIDT-TELEMARK RØR AS | 922255792 | NOME |
| MIETINEN ANLEGG AS | 931366270 | VADSØ |
| MIFO AS | 851450912 | MOLDE |
| MIKA BYGG AS | 928870073 | ASKER |
| MIKA BYGGTJENESTER AS | 912087999 | LIER |
| MIKAEL WIK AS | 994788787 | VERDAL |
| MIKALSEN INSTALLASJON AS | 927062283 | SKJERVØY |
| MIKKEL AMB | 924464690 | RINGSAKER |
| MIKKELSEN & MIKKELSEN AS | 988238686 | SANDEFJORD |
| MILJØANLEGG ENTREPRENØRFORRETNING AS | 987544627 | ØYGARDEN |
| MILJØBYGG AS | 881023822 | STAVANGER |
| MILJØ BYGG VEST AS | 963763921 | BERGEN |
| MILJØCONSULT AS | 980908100 | BERGEN |
| MILJØ ELEKTRO AS | 960850661 | SANDNES |
| MILJØLANDSKAP ANLEGG AS | 985862923 | INDRE ØSTFOLD |
| MILJØPROSJEKT AS | 992841044 | SKIEN |
| MILJØSANERING NORD AS | 928084825 | ALTA |
| MILJØTAK AS | 976714113 | GJERDRUM |
| MILJØ-VVS AS | 919414081 | RINDAL |
| MINDE BLIKK AS | 936297374 | BERGEN |
| MINEL AINSTALL AS | 992514914 | GRAN |
| MINEL DRØBAK ELEKTRISKE AS | 980433994 | FROGN |
| MINEL ELMONTASJE AS | 990239673 | HAMAR |
| MINEL ELMONTASJE ELVERUM AS | 980349683 | ELVERUM |
| MINEL GJØVIK AS | 986354026 | GJØVIK |
| MINEL GUDBRANDSDAL AS | 887486972 | SEL |
| MINEL KREATIV ELEKTRO SKI AS | 994853694 | NORDRE FOLLO |
| MINEL LAND ELEKTRISKE AS | 944701613 | NORDRE LAND |
| MINEL SKOGVANG INSTALLASJON AS | 930358789 | GAUSDAL |
| MINH RØRLEGGERSERVICE AS | 983823785 | OSLO |
| MINIMASKIN AS | 976139186 | BERGEN |
| MIØSEN BOLIGBYGG AS | 896178652 | STANGE |
| MIRA BYGG AS | 917376492 | ØYER |
| MIREK BYGG Miroslaw Czeslaw Tritt | 994566563 | FROGN |
| MITEK INDUSTRIES AS | 984885881 | HAMAR |
| MITHASSEL INGENIØR OG RØRLEGGERBEDRIFT AS | 979575319 | OSLO |
| MIVAX ANLEGG AS | 935903688 | MODUM |
| MJÅNES GRAVING OG TRANSPORT | 922045623 | SVEIO |
| MJÅTVEIT ØYVIND | 970283846 | HÅ |
| MJ-BYGGSERVICE AS | 996641333 | VANYLVEN |
| MJELSTAD OG STOKKE RØRLEGGERFORRETNING AS | 974371855 | OSTERØY |
| MJELSTAD VVS AS | 997948297 | BERGEN |
| MJG MASKIN AS | 924779950 | BIRKENES |
| Mjøen VVS A/S | 947427601 | ORKLAND |
| M.JOHANSEN AS | 819758352 | LYNGEN |