 | MELSOM ARKITEKTUR | 931431358 | OSLO |
| MELUM MASKIN AS | 913772261 | SKIEN |
| MEMBRANER OG TAKTEKKING AS | 874402052 | GJERDRUM |
| MEMM DRIFT AS | 929579798 | TROMSØ |
| MEMO ELEKTRO AS | 985853673 | LØRENSKOG |
| MEPRO RØR AS | 912678954 | DRAMMEN |
| MERÅKER VVS AS | 926352458 | MERÅKER |
| MER ARKITEKTUR AS | 939626387 | OSLO |
| MERCUR VVS AS | 915088384 | OSLO |
| MERCUR VVS ENTREPRENØR AS | 920015239 | OSLO |
| MERIKON AS | 912226395 | NES |
| MERK AS | 992675497 | ÅLESUND |
| ME-RO BETONGSAGING AS | 991286659 | LIER |
| MESNA BYGG AS | 929347927 | RINGSAKER |
| MESNA RØRLEGGERSERVICE AS | 917127395 | RINGSAKER |
| MESTA AS | 992804440 | OSLO |
| MEST ENTREPRENØR AS | 931664344 | ÅL |
| MESTER BEDRIFTEN BRATFOS RØRSERVICE AS | 924515813 | OSLO |
| MESTERBEDRIFTEN LUND AS | 927443740 | ENEBAKK |
| MESTER BERG BYGGMESTER AS | 924489219 | SARPSBORG |
| MESTERBETONG BODØ AS | 931692305 | BODØ |
| MESTERBLIKK AS | 876195682 | TRONDHEIM |
| MESTER BLIKK OG TAK AS | 895613142 | ØVRE EIKER |
| MESTERBOLIG OG BYGGTJENESTE AS | 984342942 | ASKER |
| MESTERBYGG BRYNE AS | 826055022 | TIME |
| MESTERBYGG DOMBÅS AS | 997107780 | DOVRE |
| MESTER BYGG & EIENDOMSUTVIKLING AS | 995481898 | AURSKOG-HØLAND |
| MESTERBYGG HALDEN AS | 965764933 | HALDEN |
| MESTERBYGG JÆREN AS | 994801791 | HÅ |
| MESTERBYGG MOSS AS | 991603026 | MOSS |
| MESTERBYGG NORDBY AS | 914884802 | NORDRE FOLLO |
| MESTERBYGG NUMEDAL AS | 889031832 | FLESBERG |
| MESTER BYGG OG UTEROM AS | 999200397 | RINGERIKE |
| MESTERBYGG RINGERIKE AS | 970942408 | RINGERIKE |
| MESTERBYGG SARPSBORG AS | 987195401 | SARPSBORG |
| MESTERBYGGSØR AS | 985677581 | FÆRDER |
| MESTERBYGG TROMS AS | 998577632 | MÅLSELV |
| MESTERBYGG VESTFOLD AS | 999220959 | SANDEFJORD |
| MESTER EIENDOM TØNSBERG AS | 974538229 | TØNSBERG |
| MESTERFLIS SØR AS | 920934706 | KVINESDAL |
| MESTERGRUPPEN ARKITEKTER AS | 960577493 | BODØ |
| MESTERKONSULT AS | 922572798 | TRONDHEIM |
| MESTERLANDA AS | 922906823 | ASKER |
| MESTERLANDSKAP AS | 932290014 | TRONDHEIM |
| MESTERLIG-BOLIG AS | 928791726 | KRISTIANSAND |
| MESTERMO VVS AS | 987742542 | KINN |
| MESTERMUR AS | 982129095 | ELVERUM |
| MESTER NORD AS | 914279461 | HAMMERFEST |
| MESTERPROSJEKT AS | 913265440 | VESTRE TOTEN |
| MESTER RØR AS | 945148462 | KONGSBERG |