| Name | Org.no. | Municipality | |
|---|---|---|---|
| REN KONSTRUKSJON AS | 932097419 | JEVNAKER |
| RENNEBU HYTTESERVICE AS | 991161244 | RENNEBU |
| RENOVAR AS | 995356791 | OSLO |
| REN RØROS EL-SERVICE AS | 819884412 | RØROS |
| REO BYGG AS | 980858138 | RINGERIKE |
| REPCON AS | 932104857 | HOLMESTRAND |
| REPPE BYGGTJENESTER AS | 999627714 | MIDTRE GAULDAL |
| REPPE VVS AS | 915448895 | FRØYA |
| REPSTAD ANLEGG AS | 915372201 | KRISTIANSAND |
| RESELL & NICCA AS | 915448771 | OSLO |
| RESTAURERING & BYGG AS | 997234332 | NORDRE FOLLO |
| 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 |
| RETURA IR AS | 985711267 | LEVANGER |
| RETURA NOMIL AS | 985226482 | GLOPPEN |
| RETVEDT AS | 917722102 | RINGERIKE |
| REVER & DRAGE AS | 917324093 | OSLO |
| REVHEIM MUR OG HAGE AS | 915429947 | OSTERØY |
| REYRR AS | 825500162 | SANDNES |
| RFB AS | 925553956 | KRISTIANSAND |
| RF BYGGETEKNIKK AS | 928779319 | OSLO |
| RFG BETONG AS | 930537713 | NORD-FRON |
| RGB ENTREPRENØR AS | 932723697 | OSLO |
| RG BYGGENTREPRENØR AS | 930927112 | FREDRIKSTAD |
| RGR ELEKTRO AS | 925273481 | BERGEN |
| RGV AS | 915521371 | RINGSAKER |
| RH BYGG AS | 987877065 | EIDSKOG |
| RHK AS | 929787544 | FREDRIKSTAD |
| 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 |
| RIB NOR AS | 927748231 | MOLDE |
| RICHARD ANDERSEN AS | 927732521 | KRISTIANSAND |
| RICHARD FOSSUM | 926605860 | NORDRE LAND |
| 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 ELEKTRO AS | 967907103 | HALDEN |
| RIIS GLASS OG FASADE AS | 969047780 | TRONDHEIM |
| RIIS-RØNNOW AS | 917676003 | OSLO |
| RIKELEKTRO AS | 991320164 | HALDEN |