 | G-TAKK AS | 826091312 | FARSUND |
| GT-BYGG AS | 995079917 | NOTODDEN |
| GTI DRIFT AS | 925033278 | KARMØY |
| GT MUR & FLIS AS | 914154677 | FREDRIKSTAD |
| GTS AS | 991238034 | HOL |
| GUDMUNDSVEEN AS | 998303036 | VESTRE TOTEN |
| GUDØY GRAVESERVICE AS | 925263443 | RÅDE |
| GUERICKE ENGINEERING AS | 917411492 | FÆRDER |
| GULBRANDSEN & OLIMB AS | 879296242 | OSLO |
| GULCON AS | 922128693 | ASKER |
| GULEN BLIKK OG VEDLIKEHOLD AS | 922347883 | GULEN |
| GULLHAGEN ANLEGGSDRIFT AS | 988415472 | ÅL |
| GULLICHSEN AS | 925884359 | ENEBAKK |
| GULLI MASKIN AS | 927547244 | LILLESTRØM |
| GULVBETONG AS | 992699612 | TRONDHEIM |
| GULV OG TAK AS | 936130364 | SANDNES |
| GUNDERSEN & GRIMSMO AS | 933763927 | HALDEN |
| GUNDERSEN MASKINSERVICE AS | 989234706 | LILLEHAMMER |
| GUNDERSEN MASKIN & TRANSPORT AS | 980882500 | TROMSØ |
| GUNNAR BAKKEN | 919451890 | LARVIK |
| GUNNAR BROVIG | 959404062 | LILLESAND |
| GUNNAR DAHLE | 970295070 | TOKKE |
| GUNNAR FOSSLI | 913302060 | SANDEFJORD |
| GUNNAR HOGNERUD AS | 982894638 | HOL |
| GUNNAR JAKOBSEN AS | 998366380 | LINDESNES |
| GUNNAR KIND AS | 983762433 | OSLO |
| GUNNAR LEIKVOLD AS | 974470667 | NESODDEN |
| GUNNAR L HANSEN OG SØNN DA | 952947885 | OSLO |
| GUNNAR RESE AS | 987884959 | ASKER |
| GUNNERUD ENTREPRENØR AS | 924957670 | SIGDAL |
| GUNNLEIF FJOGSTAD MASKIN AS | 913854934 | KLEPP |
| GÜNTHER ANLEGG OG TRANSPORT AS | 935597390 | RÅDE |
| GUNVALD JOHANSEN BYGG AS | 987597887 | BODØ |
| GUNVALD JOHANSEN BYGG LOFOTEN AS | 934809874 | VESTVÅGØY |
| GUNVALDSEN & SØNN AS | 911639130 | NORDRE FOLLO |
| GUPEX AS | 943705879 | OSLO |
| GUSTAD AS | 995223074 | AVERØY |
| GUSTAV OLSEN ENTREPRENØRFORRETNING AS | 927958910 | LINDESNES |
| GUSTAVSEN RØR AS | 923842829 | LARVIK |
| GUSTAVSEN & SLEMDAL AS | 968320106 | ULLENSAKER |
| GUSTERUD BYGG AS | 996487857 | EIDSVOLL |
| GUTTA I SLAGET ENTREPRENØR AS | 931752170 | OSLO |
| GUTTA PÅ JOBB AS | 934977777 | BÆRUM |
| H2 BYGG AS | 995834707 | AVERØY |
| H2 BYGGETEKNIKK AS | 989579592 | BERGEN |
| H2 HARDANGER AS | 925233323 | KVAM |
| H2 MILJØ AS | 929503341 | OSLO |
| H2 RØR AS | 912749460 | RANDABERG |
| HA 1 BOLIG AS | 932165074 | SØR-VARANGER |
| HAAKULL & ERSLAND AS | 967265780 | VINDAFJORD |
| HAALAND AS | 920520146 | RANA |
| HAALAND KLIMA AS | 986897526 | OSLO |
| HAANDVERKERNE AS | 979440499 | ASKER |
| HAARSTAD ERIK SIVILARKITEKT MNAL | 970277005 | OSLO |
| HAATRE AS | 923931015 | SULA |
| HAATRE DESIGN AS | 928275450 | SULA |
| HAAVE GRAVESERVICE AS | 921183143 | NOTODDEN |
| HAB CONSTRUCTION AS | 985386854 | BÆRUM |
| HABESHA RØR MAHMUD | 936481795 | OSLO |
| HABEX AS | 912544931 | SIGDAL |
| HABI AS | 967866210 | STAVANGER |
| HABITAT AS | 993058602 | BÆRUM |
| HÅ BYGGTEKNIKK AS | 912382680 | HARSTAD |
| HADARHUS AS | 892624992 | HAREID |
| HADDING ELEKTRO AS | 912079449 | NESBYEN |
| HADELAND ELEKTRO AS | 992896981 | GRAN |
| HADELAND MASKINDRIFT AS | 991100296 | GRAN |
| HADELAND STÅL OG GIPSMONTASJE AS | 990102600 | LUNNER |
| HADELAND VVS AS | 817887082 | LUNNER |
| HADENE BYGG AS | 916846738 | LUNNER |
| HADSEL BYGG OG VEDLIKEHOLD AS | 986069216 | HADSEL |
| HADSEL MASKIN AS | 964564027 | HADSEL |
| HÆDER BETONG AS | 935786568 | SANDNES |
| HÆHRE ENTREPRENØR AS | 986420010 | MODUM |
| HÅ ELEMENT AS | 923629211 | HÅ |
| HAFA ELEKTRO AS | 958061838 | LARVIK |
| HAFJELL MASKIN AS | 985369771 | ØYER |
| HAFRSFJORD RØR AS | 935317975 | STAVANGER |
| HAFS ELEKTRO & RØR AS | 934466152 | HYLLESTAD |
| HAFSLO BYGG SERVICE V/KJELL BJØRN NESET | 976265920 | LUSTER |
| HAGA AS | 916774680 | STAVANGER |
| HAGA & BERG ENTREPRENØR AS | 880409972 | OSLO |
| HAGA BOLIG AS | 918112278 | STAVANGER |
| HAGA INSTALLASJON AS | 999544398 | STAVANGER |
| HAGEANLEGG AS | 960571630 | TRONDHEIM |
| HAGE AS | 992095504 | SANDEFJORD |
| HAGELIN BYGGSERVICE AS | 932516063 | FREDRIKSTAD |
| HAGELSTEEN VVS AS | 999266711 | HOLE |
| HAGE & MASKIN AS | 930181765 | KARMØY |
| HAGEMEISTER RESET BYGG AS | 923029834 | KVINNHERAD |
| HAGEN BYGG AS | 925756741 | ASKER |
| HAGENBYGG AS | 996415899 | OPPDAL |
| HAGENES AS | 991812474 | BERGEN |
| HAGEN MASKIN AS | 999076890 | ASKER |
| HAGEN OG GODAGER AS | 924824794 | STANGE |
| HAGENS GRAVESERVICE AS | 922693749 | GRAN |
| HAGEN & SØNN AS | 960672739 | HJARTDAL |
| HAGENS RØRSERVICE AS | 976282744 | SØNDRE LAND |
| HAGEN VVS AS | 986789766 | OSLO |
| HAGEN VVS OG KLIMA AS | 934548221 | RINGSAKER |