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| SELDAL MASKIN AS | 999322255 | SANDNES |
| SELEBØ RØRSERVICE AS | 996629325 | SOKNDAL |
| SELFORS INSTALLASJON AS | 884698022 | SØR-VARANGER |
| SELØY UNDERVANNSSERVICE AS | 943488185 | HERØY (N.) |
| SELTOR AS | 915617344 | PORSGRUNN |
| SELVAAG PROSJEKT AS | 994533207 | OSLO |
| SELVEN BYGG AS | 918353453 | TRONDHEIM |
| SELVIK BYGGESERVICE AS | 994968173 | BERGEN |
| SEMB RØRSERVICE | 985711240 | LARVIK |
| SEMCON NORD AS | 978654037 | BODØ |
| SENJABYGG AS | 940051398 | SENJA |
| SENNESETH BETONG & ANLEGG AS | 915614574 | RINGERIKE |
| SENNIT AS | 929242785 | HARSTAD |
| SENTRONIK AS | 992905409 | KINN |
| SENTRUMBYGG AS | 983552382 | EIGERSUND |
| SENTRUM RØR AS | 951244899 | MOSS |
| SENTRUM RØR AS | 977369711 | VOLDA |
| S.E.P. CONSULT AS | 998362709 | ASKER |
| SEPTEMBER ARKITEKTER AS | 995801868 | DRAMMEN |
| SEQUOIA UTVIKLING AS | 923790756 | OSLO |
| SERVICEALLIANSEN ØST AS | 957246575 | OSLO |
| SERVICEALLIANSEN ØSTFOLD AS | 917763968 | HALDEN |
| SERVICEALLIANSEN SØR AS | 923560122 | SKIEN |
| SERVICEALLIANSEN VEST AS | 917488126 | BERGEN |
| SERVICE BN BYGG AS | 917840946 | TRONDHEIM |
| SERVICE ELEKTRIKEREN AS | 966291192 | BERGEN |
| SERVICE OG VEDLIKEHOLD AS | 994297147 | GJØVIK |
| SERVICERØRLEGGER JAN AS | 931316508 | BJØRNAFJORDEN |
| SERVICETJENESTER ØST AS | 916022506 | ELVERUM |
| SES ELEKTRO AS | 925834157 | SOLA |
| SET ELEKTRO AS | 987818549 | TØNSBERG |
| SETER GRAVING OG UTEMILJØ AS | 924763345 | RÅDE |
| SETRA DRIFT AS | 919885130 | SURNADAL |
| SETTEVIK ASFALT AS | 983347584 | BÆRUM |
| SEVE EHITUSE | 989115316 | OSLO |
| SEVERINSEN TAKST AS | 928934888 | KRISTIANSAND |
| S FARMENS MESTERBYGG AS | 946874221 | HAMAR |
| SF BYGG AS | 994235672 | VESTVÅGØY |
| SFK GRAVING AS | 993539155 | RINGSAKER |
| S. FLATNES ENTREPRENØR AS | 929031369 | SVEIO |
| SFP KLIMA AS | 996306623 | HÅ |
| SG ENTREPRENØR AS | 997395735 | MELHUS |
| SGM BYGG AS | 930751677 | MOSS |
| SH-BYGG AS | 992764619 | OSLO |
| SH - ELEKTRO AS | 994038370 | LILLESAND |
| SHF BYGG AS | 915279090 | KARMØY |
| SH OPPMÅLING AS | 913864344 | MASFJORDEN |
| SH PROSJEKT AS | 998850606 | INDRE ØSTFOLD |
| SIA GOKSTAD HUS | 912550680 | |