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| SØRLANDETS ELEKTRO AS | 896630342 | LINDESNES |
| SØRLANDSBYGG AS | 913574214 | ARENDAL |
| SØRLANDSTAK AS | 913053125 | KRISTIANSAND |
| SØRLI ARKITEKTER AS | 943257620 | HEIM |
| SØRLI BYGG AS | 939479201 | LIERNE |
| SØRLI ENTREPRENØR AS | 928573052 | INDRE ØSTFOLD |
| SØRMASKINERING AS | 993786160 | KRISTIANSAND |
| SØR MUR & BYGG AS | 990062641 | GRIMSTAD |
| SØR-ØST TAKSERING AS | 929871316 | MIDT-TELEMARK |
| SØRSIDA SAG AS | 925897205 | HØYANGER |
| SØRSKOG VVS AS | 919653213 | BERGEN |
| SØR & SØR AS | 916577354 | SKIEN |
| SØRSTUEN AS | 920284108 | HITRA |
| SORTLAND BYGG & ANLEGG AS | 920354998 | KRISTIANSAND |
| SORTLAND ENTREPRENØR AS | 846625992 | SORTLAND |
| SØRUM ELEKTRISKE AS | 982571073 | LILLESTRØM |
| SØRUM RØR OG BAD AS | 897855852 | LILLESTRØM |
| SØRUMSAND RØR AS | 917950857 | LILLESTRØM |
| SØRUM VVS AS | 919277777 | LILLESTRØM |
| SØRVÅG ENTREPRENØR AS | 995268450 | GRIMSTAD |
| SØRVÅG VVS AS | 926351494 | GRIMSTAD |
| SØRVEST BETONGSAGING AS | 970920412 | BJERKREIM |
| SØRVEST VVS AS | 991230041 | RANDABERG |
| SØRVIK SNEKKERSERVICE AS | 928652815 | TRONDHEIM |
| SØSTRENE AMUNDSEN RØRLEGGERBEDRIFT AS | 992719133 | OSLO |
| SOTEK AS | 931634216 | GRIMSTAD |
| S O TRANSPORT AS | 892271402 | LIER |
| SOTRA OPPMÅLING AS | 966837764 | ØYGARDEN |
| SOTRA RØR AS | 936552900 | ØYGARDEN |
| SOTRA TRELAST AS | 937611234 | ØYGARDEN |
| SØVIK & SKÅRAVIK AS | 966981911 | ÅLESUND |
| SPACECONSTRUCTION AS | 923273867 | OSLO |
| SPANGEREID BYGG AS | 999074723 | LINDESNES |
| SPANNE BLIKK AS | 972420158 | KARMØY |
| SPAR-BYGG AS | 935540704 | STEINKJER |
| SPARINGEN AS | 916391447 | RINGSAKER |
| SPARK STUDIO AS | 998912989 | TRONDHEIM |
| SPB AS | 929458265 | BRØNNØY |
| SPB ELEKTRO AS | 915037453 | ØVRE EIKER |
| SPENNARMERING AS | 950174617 | STJØRDAL |
| SPENNCON AS | 844558082 | RINGERIKE |
| SPENNTEKNIKK CONSTRUCTION AS | 897800292 | KONGSVINGER |
| SPERA AS | 817125522 | VERDAL |
| SPIDER INDUSTRIER AS | 944914846 | TROMSØ |
| SPIGSETH K LANDBRUKSSERVICE | 970367578 | NES |
| SPIKERN BYGG AS | 985601127 | OSLO |
| SPINN ARKITEKTER AS | 998341914 | OSLO |
| SPIR ARKITEKTER AS | 920420877 | TØNSBERG |
| SPLITKON AS | 995806797 | MODUM |