 | PROSTIK AS | 990843333 | KLEPP |
| PROTAN ENTREPRENØR AS | 983386393 | LIER |
| PROTAN ENTREPRENØR MIDT-NORGE AS | 914613922 | TRONDHEIM |
| PROTAN TAKSERVICE AS | 977102499 | ALTA |
| PRO-TAX AS | 833356062 | MOSS |
| PROTEKNO AS | 997971558 | TØNSBERG |
| PROTEKS HATLESTAD | 932001284 | BERGEN |
| PROTEK VVS AS | 933804127 | TRONDHEIM |
| PROTERM AS | 997299175 | OSLO |
| PROTOM BYGG AS | 999537111 | ÅS |
| PRO TOTALBYGG AS | 886119372 | OSLO |
| PROVENO AS | 927566311 | TRONDHEIM |
| PROVENTA INNEMILJØ AS | 916842481 | BERGEN |
| PRO VENT AS | 936990770 | ASKER |
| PS ANLEGG AS | 912561798 | GRIMSTAD |
| PS BYGG AS | 935103991 | SOLA |
| P S HÅLAND RØR AS | 980926826 | TIME |
| PSLAND AS | 926375474 | BERGEN |
| PS REHABILITERING AS | 836036662 | TRONDHEIM |
| PSS RØRLEGGERSERVICE AS | 933259390 | OSLO |
| PSV ELEKTRO AS | 920753183 | ULLENSAKER |
| PSW POWER & AUTOMATION AS | 982574145 | ØYGARDEN |
| PTG KULDETEKNISK AS | 986165460 | TROMSØ |
| PTG MULTI KULDE AS | 979843445 | BODØ |
| PTP AS | 914968623 | ENEBAKK |
| PUKK & GRAVESERVICE DRIFT AS | 915497640 | SANDEFJORD |
| PULS ARKITEKTER AS | 977503264 | OSLO |
| P UNDHEIM AS | 984079834 | TIME |
| PUSHAK AS | 992309318 | OSLO |
| PUSSE OPP AS | 927088452 | BÆRUM |
| PUSSMESTER AS | 918721371 | OSLO |
| PV ARKITEKTER AS | 966540249 | LARVIK |
| PV EIENDOM AS | 911608774 | STAVANGER |
| PX SOLUTIONS AS | 992074299 | DRAMMEN |
| PZ SERVICE AS | 912168646 | OSLO |
| Q2 ARKITEKTER AS | 990964599 | ARENDAL |
| QAM AS | 932375621 | OSLO |
| QBYGG1 CZAJEWSKI | 923167617 | SKIEN |
| QDP ARKITEKTER AS | 819498822 | FROGN |
| QGS AS | 919880503 | ASKER |
| Q RÅDGIVNING AS | 932935031 | HAUGESUND |
| Q-SOLUTIONS AS | 932800195 | LILLESTRØM |
| QUALE MASKIN VED FRODE KNUTSEN | 995183145 | LYNGDAL |
| QUIPU AS | 927409127 | FREDRIKSTAD |
| QVALBEIN & RAVNDAL AS | 930830151 | VINDAFJORD |
| R1 ENTREPRENØR AS | 990684650 | FLESBERG |
| R1 VVS AS | 913835905 | KONGSBERG |
| R25 ARKITEKTER AS | 924620781 | NORDRE FOLLO |
| R3 MONTASJE AS | 922277672 | SKIEN |
| RAA BYGG AS | 813688662 | BERGEN |
| RAAD AS | 928898474 | ØVRE EIKER |
| RAAEN DICK | 970101543 | ØVRE EIKER |
| RAA GRAVESERVICE AS | 988856762 | RAKKESTAD |
| RAANÆS ARNE MAGNUS | 970399925 | ENEBAKK |
| RAASOK BYGG | 994832441 | INDRE ØSTFOLD |
| RABB ARKITEKTER AS | 913129504 | SKIEN |
| RA BYGG ENTREPRENØR AS | 927331535 | EIDSKOG |
| RÅBYGG & MONTASJE AS | 919779462 | TIME |
| RAD BYGG AS | 916675828 | STAVANGER |
| RADCRAFT AS | 933917916 | ASKØY |
| RÅDE GRAVESERVICE AS | 917447373 | MOSS |
| RÅDE RØRLEGGERSERVICE AS | 990590168 | MOSS |
| RÅDGIVENDE INGENIØRER LØYNING AS | 968469029 | KRISTIANSAND |
| RÅDGIVERHUSET AS | 999539491 | FREDRIKSTAD |
| RADON GRUPPEN NORGE AS | 931825674 | BÆRUM |
| RADONMANNEN AS | 998384125 | LILLESTRØM |
| RÆDERGÅRD ENTREPRENØR AS | 917570884 | ØRLAND |
| RAFOS ENTREPRENØR AS | 897676842 | RINGSAKER |
| RAGNAR AAS AS | 945530006 | EVJE OG HORNNES |
| RAGNAR BOVIM ARKITEKT MNAL | 891965702 | OSLO |
| RAGNAR KONSTAD | 969999811 | MELHUS |
| RAGNAR SUNDET | 996997847 | FROSTA |
| RAGNAR SVENSEN AS | 932241536 | STAVANGER |
| RÅHOLT BYGG OG EIENDOMSSERVICE AS | 916554036 | EIDSVOLL |
| RAIDON AS | 916165536 | LILLESTRØM |
| RAJ ELEKTRO AS | 925414212 | RÅDE |
| RAK ARKITEKTUR AS | 912077640 | OSLO |
| RAKKESTAD TRE OG BETONG AS | 925118729 | RAKKESTAD |
| RAKON BYGG AS | 976261593 | TRONDHEIM |
| RÅK UTVIKLING AS | 928964957 | VESTVÅGØY |
| RAM ARKITEKTUR AS | 986771735 | LILLEHAMMER |
| RAMBØLL NORGE AS | 915251293 | OSLO |
| RAM ENTREPRENØR AS | 913787285 | ÅLESUND |
| RAMIRENT AS | 984820011 | LILLESTRØM |
| RAMIZ SAFDAR ENTREPRENØR AS | 923750886 | ÅS |
| RAMLOS AS | 915285988 | OS (INNLANDET) |
| RAMM CONSULT AS | 913205634 | BERGEN |
| RAMP AS | 992869224 | STAVANGER |
| RAMSDAL MASKIN AS | 998819105 | KINN |
| RAMSFJELL ARKITEKTER AS | 988464767 | BÆRUM |
| RAMSTAD RØRLEGGERSERVICE AS | 930949191 | NORDRE FOLLO |
| RANA ENTREPRENØR AS | 950271728 | RANA |
| RANAHYTTA AS | 925269506 | RANA |
| RANA KOMMUNE TEKNISKE TJENESTER | 974791420 | RANA |
| RANDEM & HÜBERT AS | 989653245 | OSLO |
| RANDERS TEGL AS | 914878977 | OSLO |
| RANDØY MASKIN AS | 924404914 | STAVANGER |
| RANHEIM BYGGPARTNER AS | 913164903 | TRONDHEIM |
| RASCH RØRLEGGER | 989433830 | ELVERUM |
| RASHIDYAN OSLO RØR | 921578210 | OSLO |