 | RESSURS OG MILJØ AS | 995121034 | OSLO |
| RESTAURERING & BYGG AS | 997234332 | OSLO |
| RETT BAD AS | 920650694 | STAVANGER |
| RETT BYGG AS | 998151783 | LILLESTRØM |
| RETT ENTREPRENØR AS | 925880388 | OSLO |
| RETTE RØR AS | 920772404 | SKIEN |
| RETT HJEM ARKITEKTER AS | 999638821 | TRONDHEIM |
| RETT HJEM EIENDOMMER AS | 991757112 | BERGEN |
| RETURA IR AS | 985711267 | LEVANGER |
| RETURA SOGN & FJORDANE AS | 985226482 | GLOPPEN |
| RETVEDT AS | 917722102 | RINGERIKE |
| REVHEIM MUR OG HAGE AS | 915429947 | OSTERØY |
| REVO ENTREPRENØR AS | 935859743 | SARPSBORG |
| REYRR AS | 825500162 | SANDNES |
| RFB AS | 925553956 | KRISTIANSAND |
| RFG BETONG AS | 930537713 | NORD-FRON |
| RGB ENTREPRENØR AS | 932723697 | OSLO |
| RG BYGGENTREPRENØR AS | 930927112 | FREDRIKSTAD |
| RG FJELLSIKRING AS | 924823755 | LARVIK |
| RGR ELEKTRO AS | 925273481 | BERGEN |
| RGV AS | 915521371 | RINGSAKER |
| RH BYGG AS | 987877065 | EIDSKOG |
| RH KVALITETSBYGG AS | 924701757 | LILLEHAMMER |
| RIBA RÅDGIVENDE INGENIØRER AS | 979886381 | OSLO |
| RIBE ENTREPRENØR AS | 932332817 | LILLESAND |
| RIB INORD AS | 992320885 | ALTA |
| RIB KONSULT AS | 827660302 | DRAMMEN |
| RIEBER PROSJEKT AS | 911678462 | ASKER |
| RIFORM AS | 915101836 | SANDNES |
| RIFT ARKITEKTUR AS | 927485699 | OSLO |
| RIGEO AS | 921836821 | BÆRUM |
| RIIK AS | 928037592 | SØR-VARANGER |
| RIIS BYGG ENTREPRENØR AS | 988400106 | LILLESTRØM |
| RIIS BYGG TRØNDELAG AS | 930700312 | TRONDHEIM |
| RIIS EIENDOM AS | 937757964 | TRONDHEIM |
| RIIS ELEKTRO AS | 967907103 | HALDEN |
| RIIS GLASS OG FASADE AS | 969047780 | TRONDHEIM |
| RIIS-RØNNOW AS | 917676003 | OSLO |
| RIKELEKTRO AS | 991320164 | HALDEN |
| RIKSHEIM CONSULTING AS | 960186516 | ÅLESUND |
| RIKSTAD GRØNTANLEGG AS | 929475712 | TØNSBERG |
| RIKSVOLD AS | 990518475 | VERDAL |
| RINDAL MUR OG BETONG AS | 920801226 | RINDAL |
| RINDALSHYTTER AS | 984057091 | RINDAL |
| RINDALS-TRE AS | 984136358 | RINDAL |
| RINGBO BBL | 948321475 | RINGERIKE |
| RINGEBU ANLEGGSDRIFT AS | 985668817 | RINGEBU |
| RINGEN RØRSERVICE AS | 920678564 | OSLO |
| RINGERIKE ANLEGGSSERVICE AS | 980502767 | RINGERIKE |
| RINGERIKE KJØLE & FRYSESERVICE AS | 913301714 | RINGERIKE |
| RINGERIKE VVS AS | 934224868 | RINGERIKE |
| RING FORSKALING AS | 827156582 | RINGERIKE |
| RINGHUS SKIFER-MUR OG FLIS AS | 915507239 | VINJE |
| RINGJORD ELEKTRO AS | 925573779 | TROMSØ |
| RINGLI BYGG AS | 825542612 | ØYSTRE SLIDRE |
| RINGSAKER ELEKTRO AS | 911948745 | RINGSAKER |
| RINGSAKER VEGG- OG TAKELEMENTER AS | 983823920 | RINGSAKER |
| RINGSIDE RØRLEGGERBEDRIFT AS | 915407692 | OSLO |
| RINGSTAD BYGG AS | 982984947 | NES |
| RINGSTAD ODD | 970227016 | INDRE ØSTFOLD |
| RINGVOLL VVS OG VARMEPUMPETEKNISK AS | 996936333 | MOSS |
| RINOR AS | 930774170 | RANA |
| RIPO FABRIKA AS | 912878465 | OSLO |
| RISA AS | 980404129 | HÅ |
| RISANGER & SØNN AS | 982146011 | HAUGESUND |
| RISDAL AS | 913855728 | NORD-FRON |
| RISKA SVEIS AS | 933767027 | SANDNES |
| RISNES ELEKTRO AS | 929874390 | ALVER |
| RISOLVE AS | 997667174 | ELVERUM |
| RISØR HEIS OG ELEKTROSERVICE AS | 994272683 | RISØR |
| RISØY BYGG AS | 888106332 | ØYGARDEN |
| RIVCO AS | 982990963 | KRISTIANSAND |
| RIVENES AS | 915428940 | BERGEN |
| RIVE- OG KNUSESERVICE AS | 980042529 | KRISTIANSAND |
| RIVIER AS | 832185612 | OSLO |
| RIWO AS | 915621902 | ASKØY |
| RJAZANTSEV BYGG | 932112558 | GJESDAL |
| R. JEGTEBERG AS | 925274321 | BYKLE |
| RJ MASKIN Ronny Johannessen | 982567785 | SELJORD |
| RJ MULTISERVICE AS | 930831433 | AUSTRHEIM |
| RJUKAN VVS & ELEKTRO AS | 982142601 | TINN |
| R.K. BETONGPARTNER AS | 920734774 | RØROS |
| RKF STÅLBYGG AS | 991100016 | GOL |
| RK MASKIN & TRANSPORT AS | 921832656 | BALSFJORD |
| R K MONTASJE AS | 947948490 | TØNSBERG |
| RK MUR AS | 997802659 | HOLMESTRAND |
| RKS ENTREPRENØR AS | 989656570 | INDRE ØSTFOLD |
| RK TEKNISKE AS | 991061193 | STAVANGER |
| RMB- AS | 998474728 | LILLESTRØM |
| RM BYGG & BETONG AS | 927405512 | NORD-FRON |
| RMC EIENDOM AS | 922859779 | GRIMSTAD |
| RM PLAN AS | 934775937 | RINGERIKE |
| RMS-A AS | 835032892 | OSLO |
| RMT AS | 919157658 | NORDREISA |
| RMTI AS | 934231120 | ASKER |
| R. NIELSEN ENTREPRENØR AS | 918529551 | OSTERØY |
| RØA ELEKTRISKE AS | 983188524 | BÆRUM |
| ROALDHUS AS | 934454421 | GISKE |
| ROALD JOHANSEN INGENIØRFORRETNING AS | 960917227 | ALTA |
| ROALD MADSEN AS | 925510610 | TROMSØ |