 | SDK CONSULT AS | 916592477 | RÆLINGEN |
| SDN OPPMÅLING AS | 989384996 | LILLESTRØM |
| SD NORDICS AS | 930081698 | OSLO |
| SDV KLIMA AS | 887658072 | NORDRE FOLLO |
| SEABROKERS FUNDAMENTERING AS | 989580493 | STAVANGER |
| SE-ARKITEKTUR AS | 986536345 | BERGEN |
| SEAS SPJELKAVIK ELEKTRO AS | 980383946 | ÅLESUND |
| SEBB AS | 964419620 | SKJÅK |
| SEBO AS | 927678160 | ASKER |
| SEBY AS | 948829703 | LILLESTRØM |
| SECTECH AS | 993872636 | SKIEN |
| SEERUP AS | 950913061 | KLEPP |
| SEG ENTREPRENØR AS | 897012812 | FLÅ |
| SEGLEM PETTER EGIL | 970394575 | EIGERSUND |
| SEIERBYGG AS | 924379618 | EIDSVOLL |
| SEIERSTAD PELEMASKINER AS | 987580739 | BÆRUM |
| SEIM BYGG AS | 984330324 | ALVER |
| SEIM MASKIN AS | 994321102 | SANDEFJORD |
| SEKO ELEKTRO AS | 963825250 | LILLESTRØM |
| SELBAK BLIKKENSLAGERVERKSTED AS | 957492614 | FREDRIKSTAD |
| SELBAK RØR AS | 920173691 | FREDRIKSTAD |
| SELBERG ARKITEKTER AS | 924003073 | TRONDHEIM |
| SELBOE BYGG AS | 980378039 | SELBU |
| SELBU BOLIGSYSTEM AS | 976593626 | SELBU |
| SELBUHUS RØRLEGGERSERVICE AS | 993332720 | SELBU |
| 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 | SKIEN |
| SEMCON NORD AS | 978654037 | BODØ |
| SENJABYGG AS | 940051398 | SENJA |
| SENNIT AS | 929242785 | HARSTAD |
| SENSE - MATIC AS | 913720156 | OSLO |
| 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 |
| SERIGSTAD MASKIN AS | 990720525 | TIME |
| SERVICEALLIANSEN ØST AS | 957246575 | OSLO |
| SERVICEALLIANSEN ØSTFOLD AS | 917763968 | HALDEN |
| SERVICEALLIANSEN SØR AS | 923560122 | SKIEN |
| SERVICEALLIANSEN VEST AS | 917488126 | BERGEN |