 | RAGNAR SUNDET | 996997847 | FROSTA |
| RAGNAR SVENSEN AS | 932241536 | STAVANGER |
| RÅHOLT BYGG OG EIENDOMSSERVICE AS | 916554036 | EIDSVOLL |
| RAIDON AS | 916165536 | LILLESTRØM |
| RAJ ELEKTRO AS | 925414212 | FREDRIKSTAD |
| RAK ARKITEKTUR AS | 912077640 | OSLO |
| RAKKESTAD TRE OG BETONG AS | 925118729 | RAKKESTAD |
| RAKON BYGG AS | 976261593 | TRONDHEIM |
| RÅK UTVIKLING AS | 928964957 | VESTVÅGØY |
| RALLAR AS | 937137427 | BJERKREIM |
| RAL VVS AS | 927850745 | VERDAL |
| RAM ARKITEKTUR AS | 986771735 | LILLEHAMMER |
| RAMBØLL NORGE AS | 915251293 | OSLO |
| RAM ENTREPRENØR AS | 913787285 | ÅLESUND |
| RAMIRENT AS | 984820011 | LILLESTRØM |
| RAMLOS AS | 915285988 | OS (INNLANDET) |
| RAMP AS | 992869224 | STAVANGER |
| RAMSDAL MASKIN AS | 998819105 | KINN |
| RAMSFJELL ARKITEKTER AS | 988464767 | BÆRUM |
| RANA ENTREPRENØR AS | 950271728 | RANA |
| RANAHYTTA AS | 925269506 | RANA |
| RANA KOMMUNE TEKNISKE TJENESTER | 974791420 | RANA |
| RANA TOTALSERVICE AS | 984638000 | RANA |
| RANDEM & HÜBERT AS | 989653245 | OSLO |
| RANDERS TEGL AS | 914878977 | OSLO |
| RANDESUND BYGG AS | 914983975 | KRISTIANSAND |
| RANDØY MASKIN AS | 924404914 | STAVANGER |
| RANHEIM BYGGPARTNER AS | 913164903 | TRONDHEIM |
| RASCH RØRLEGGER | 989433830 | ELVERUM |
| RASHIDYAN OSLO RØR | 921578210 | OSLO |
| RASJONELL VVS AS | 924205075 | MOSS |
| RASMUSSEN ANLEGG AS | 977202795 | FLAKSTAD |
| RASMUSSEN ELEKTRO AS | 921625790 | SOLA |
| RASMUSSEN ERIK | 969956845 | VESTBY |
| RASMUSSEN MESTERBYGG AS | 986440046 | BÆRUM |
| Rasmussen & Skjelbred A/S | 946434086 | SANDEFJORD |
| RAST BYGG AS | 932002884 | NESBYEN |
| RATIO ARKITEKTER AS | 962959407 | OSLO |
| RAUFOSS ELEKTRO AS | 911950707 | VESTRE TOTEN |
| RAUFOSS GRAVESERVICE AS | 999151914 | VESTRE TOTEN |
| RAUFOSS TAK OG BLIKK AS | 983569919 | VESTRE TOTEN |
| RAUGSTAD ARKITEKTUR AS | 998799228 | SANDNES |
| RAULAND BYGGTJENESTE AS | 912451291 | VINJE |
| RAULAND MASKIN AS | 988416053 | VINJE |
| RAUMA BYGGSERVICE AS | 987659106 | RAUMA |
| RAVI RÅDGIVNING AS | 995705044 | HÅ |
| RAVNANGER HUS AS | 885779522 | ASKØY |
| RAVNDAL STÅLBYGG AS | 914414342 | GJESDAL |
| RAYMOND ARONSEN TRANSPORT & GRAVING AS | 811998222 | FROLAND |
| RAYMOND'S RØRSERVICE AS | 911966719 | BODØ |
| RAZMAS BYGG AS | 917747482 | DRAMMEN |
| RB EIENDOMSUTVIKLING AS | 993786004 | ØYER |
| RBI SERVICE OG EIENDOM AS | 926443186 | NITTEDAL |
| R B JOHANNESSEN AS | 960461827 | SVEIO |
| RB TOTAL BYGG AS | 935427762 | GOL |
| RBYGG PROSJEKT AS | 936317553 | NES |
| R Daaland AS | 929188292 | TRONDHEIM |
| RD BLIKK OG VENTILASJON AS | 976098331 | TRONDHEIM |
| REAKTOR AS | 817756182 | OSLO |
| REALBYGG LARVIK AS | 915498051 | LARVIK |
| REAL BYGGTEKNIKK AS | 929474929 | PORSGRUNN |
| REAL EIENDOMSFORVALTNING SØR AS | 926775324 | RANA |
| REAL PRO AS | 827224812 | OSLO |
| REALT BYGG & ANLEGG AS | 932026198 | LARVIK |
| RE ARKITEKTUR AS | 980352609 | TØNSBERG |
| RE BYGG AS | 930632260 | TØNSBERG |
| RE-BYGG AS | 951962449 | GLOPPEN |
| RE BYGG INNLANDET AS | 999230431 | RINGSAKER |
| RECO BYGG OG SKADETEKNIKK AS | 986559000 | BÆRUM |
| RECOVER AS | 995761440 | OSLO |
| REDE ARKITEKTER AS | 990644411 | OSLO |
| REFCO ENERGI AS | 933379922 | OSLO |
| REFRAME ARKITEKTUR AS | 915545343 | OSLO |
| REFTEC AS | 996926885 | TRONDHEIM |
| REGGESTAD BYGG AS | 990993610 | HOLMESTRAND |
| REGN PLAN & LANDSKAP AS | 930300365 | BERGEN |
| REGO BYGG AS | 925704024 | GJERDRUM |
| REHABLAGET AS | 924519673 | SOLA |
| REIANES MUR & FLIS AS | 989923013 | STRAND |
| REIDAR ANDERSBAKKEN AS | 985963908 | LOM |
| REIDAR EIE AS | 976035690 | STRAND |
| REIDAR MOEN ENTREPRENØRFORRETNING AS | 942681038 | ØVRE EIKER |
| REIDAR SKAGSETH AS | 880407562 | TROMSØ |
| REIDAR STOKKE AS | 943619506 | ÅLESUND |
| REIEL M FAGERLID | 970395652 | STAD |
| REIERSEN ENTREPRENØR AS | 974404702 | NORDRE FOLLO |
| REIERSGÅRD MASKIN | 966116544 | OSLO |
| REIME LANDBRUKSBYGG AS | 985081395 | KLEPP |
| REINERTSEN GRAVING OG UTEOMRÅDE AS | 930821209 | HÅ |
| REINSFELT LANDSKAP AS | 835854272 | NORDRE FOLLO |
| REINSVOLL BYGG OG ANLEGG AS | 921058039 | VESTRE TOTEN |
| REIPÅ KNUSERI AS | 831682442 | MELØY |
| REIS ANLEGG AS | 931983202 | LARVIK |
| REIS BYGG AS | 932618729 | LARVIK |
| REISETER INSTALLASJON AS | 976098307 | ULLENSVANG |
| REISTAD AS | 924691670 | DRAMMEN |
| REIS VVS AS | 925311103 | LARVIK |
| REITAN BYGGPRO AS | 996055663 | HITRA |
| REIULF RAMSTAD ARKITEKTER AS | 978690793 | OSLO |
| REJLERS AS | 995500167 | OSLO |