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| GNIST ARKITEKTER AS | 913128788 | BODØ |
| GNISTEN INSTALLASJON AS | 971230126 | OSLO |
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| GODEJORD ENTREPRENØR AS | 998616921 | LILLESTRØM |
| GODE UTEROM AV ANNE-KARI HETTERUD | 929511387 | FÆRDER |
| GOD KARRANJ AS | 918745572 | GJEMNES |
| GODØY BYGG AS | 976266366 | GISKE |
| GODØY MUR & ENTREPRENØR AS | 922236003 | BERGEN |
| GOHEIM TAKST OG BYGGCONSULT AS | 998559391 | SØMNA |
| G & O HELGESEN AS | 952202391 | BERGEN |
| GOLBERG AS | 965700196 | GOL |
| GOL GRAVE- OG BARKSERVICE AS | 929503295 | GOL |
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| GOLTEN RØR OG MEKANISK VERKSTED | 970384049 | ØYGARDEN |
| GOLUFT AS | 928337359 | TRONDHEIM |
| GOMA-BYGG AS | 918125477 | KRISTIANSUND |
| GO SPRINKLER AS | 998235677 | HAMAR |
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| GRAN BYGG & ELEKTRO AS | 898562972 | GRAN |
| GRAN CONSULT AS | 971597062 | EIDSVOLL |
| GRANDAHL BYGG AS | 911672979 | SARPSBORG |
| GRANDAHL RØR AS | 931940236 | HALDEN |
| GRANDE ENTREPRENØR AS | 912051625 | VERDAL |
| GRANERUD TRANSPORT AS | 980553450 | GJERDRUM |
| GRANITT ENTREPRENØR AS | 817766722 | BÆRUM |
| GRANLI RØR AS | 996704270 | MARKER |
| GRANNES VVS AS | 976717015 | NAMSOS |
| GRANUM STEINAR | 971082372 | LUNNER |
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| GRAN VVS AS | 985249962 | TØNSBERG |
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