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| MARTIN PRESTEGÅRD AS | 990341354 | BERGEN |
| MARTIN RØNNING AS | 985868506 | ASKER |
| MARTINSEN ANLEGG AS | 911736489 | NORD-AURDAL |
| MARTINSEN BAD & BOLIG AS | 918327967 | OSLO |
| MARTINSEN BETONG AS | 898197832 | MELHUS |
| MARTINSEN & STENSTAD BOLIGENTREPRENØR AS | 991408754 | BÆRUM |
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| MASKIN & EIENDOM AS | 912174115 | TROMSØ |
| MASKINENTREPRENØR EGIL ÅSTAD AS | 834715112 | EIDSVOLL |
| MASKINENTREPRENØREN ARNSTEIN REVHEIM AS | 968082620 | OSTERØY |
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| MASKINENTREPRENØR PER OTTO TANGEN AS | 990028567 | RINGERIKE |
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| MASKIN OG UTEMILJØ AS | 987902817 | INDRE ØSTFOLD |
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| MATHISEN AS | 951648736 | RINGSAKER |
| MATHISEN BYGGRÅDGIVING | 991784691 | LARVIK |