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| STRAYE EL & SOLAR AS | 923399135 | FREDRIKSTAD |
| STRAYE HYBRIDBYGG AS | 932538105 | FREDRIKSTAD |
| STRAYE STÅLBYGG AS | 991664459 | FREDRIKSTAD |
| STRAYE TAK AS | 929418514 | FREDRIKSTAD |
| STRINDA BYGG AS | 920649297 | TRONDHEIM |
| STRINDA RØRSERVICE AS | 911920182 | TRONDHEIM |
| STRØMBYGG Strøm | 985834164 | OSLO |
| STRØM GUNDERSEN AS | 961023823 | DRAMMEN |
| STRØMMEN AS | 948926814 | TØNSBERG |
| STRØMMEN EL-INSTALLASJON AS | 983188796 | LILLESTRØM |
| STRØMMEN KERAMISKE HÅNDVERK AS | 977302218 | LILLESTRØM |
| STRØMMEN RØRLEGGERBEDRIFT AS | 979753128 | LILLESTRØM |
| STRØMSHEIM BYGG AS | 912444759 | ÅLESUND |
| STRUCTOR FREDRIKSTAD AS | 917593558 | FREDRIKSTAD |
| STRUCTOR GEOMILJØ AS | 915079318 | OSLO |
| STRUCTOR LILLEHAMMER AS | 913254449 | LILLEHAMMER |
| STRUCTOR OSLO AS | 913455991 | OSLO |
| STRUCTOR TEKNISKE SYSTEMER AS | 918371680 | OSLO |
| STRUCTOR TRONDHEIM AS | 920901468 | TRONDHEIM |
| STRUCTOR VANN AS | 929286561 | OSLO |
| STRUCTOR VESTFOLD AS | 918816976 | SANDEFJORD |
| STRUKTURAS AS | 963175094 | PORSGRUNN |
| STRUTEK AS | 915649165 | BERGEN |
| STRYVO AS | 992808314 | STRYN |
| STRYVO - BISMO AS | 911553732 | SKJÅK |
| STS VAKTMESTERTJENESTER AS | 927249162 | FRØYA |
| STUBBAN INGENIØR AS | 928526267 | OSLO |
| STUBBERUD ANLEGG AS | 914811104 | RAKKESTAD |
| STUBSON AS | 926416995 | MELHUS |
| STUBSTAD BETONG AS | 927167913 | KRISTIANSAND |
| STUDIO GORILLA AS | 924520450 | OSLO |
| STUDIO H6 AS | 927700166 | OSLO |
| STUDIO HEIMAT AS | 925836982 | OSLO |
| STUDIO LON AS | 821845572 | OSLO |
| STUDIONSW AS | 941742653 | HAMAR |
| STUDIO OSLO LANDSKAPSARKITEKTER AS | 918152458 | OSLO |
| STUDIO TAVARE AS | 930077097 | OSLO |
| STYRVOLL VVS Lars J Hellenes | 986076336 | LARVIK |
| SUBMET ENTREPRENØR AS | 922114137 | OSLO |
| SUBSHORE.NO AS | 912211843 | STORD |
| SULDAL HYTTEBYGG AS | 986193677 | SULDAL |
| SULDAL SERVICE AS | 821493412 | SULDAL |
| SULDAL VVS AS | 927117975 | SULDAL |
| SULKOWSKI RØR | 927853116 | SULA |
| SUND BYGG AS | 915897568 | ASKER |
| SUNDBY 'S RØRLEGGERBEDRIFT | 931443429 | BARDU |
| SUNDE HAGESERVICE AS | 938017549 | SOLA |
| SUNDET TRANSPORT & GRAVING AS | 892598762 | LARVIK |
| SUNDT & THOMASSEN AS | 932003031 | LIER |