 | GUNNAR RESE AS | 987884959 | ASKER |
| GUNNERUD ENTREPRENØR AS | 924957670 | SIGDAL |
| GUNNLEIF FJOGSTAD MASKIN AS | 913854934 | KLEPP |
| GUNVALD JOHANSEN BYGG AS | 987597887 | BODØ |
| GUNVALDSEN & SØNN AS | 911639130 | NORDRE FOLLO |
| GUPEX AS | 943705879 | OSLO |
| GUSTAV EIENDOM DRIFT AS | 912099849 | OSLO |
| GUSTAV OLSEN ENTREPRENØRFORRETNING AS | 927958910 | OSLO |
| GUSTAVSEN & SLEMDAL AS | 968320106 | ULLENSAKER |
| GUSTAVSEN VVS AS | 923842829 | LARVIK |
| GUSTERUD BYGG AS | 996487857 | EIDSVOLL |
| GUTTA I SLAGET ENTREPRENØR AS | 931752170 | OSLO |
| H2 BYGG AS | 995834707 | AVERØY |
| H2 BYGGETEKNIKK AS | 989579592 | BERGEN |
| H2 HARDANGER AS | 925233323 | KVAM |
| H2O RØRSERVICE AS | 921619715 | ULLENSAKER |
| H2 RØR AS | 912749460 | RANDABERG |
| HA 1 BOLIG AS | 932165074 | SØR-VARANGER |
| HAAGENSEN AS | 825720952 | ÅLESUND |
| HAAKON KVESTAD AS | 982450128 | ULLENSVANG |
| HAAKULL & ERSLAND AS | 967265780 | VINDAFJORD |
| HAALAND KLIMA AS | 986897526 | OSLO |
| HAALAND MO AS | 971000244 | RANA |
| HAALAND MOSJØEN AS | 925259349 | VEFSN |
| HAALAND NORD AS | 916701993 | BODØ |
| HAANDVERKERNE AS | 979440499 | ASKER |
| HAARSTAD ERIK SIVILARKITEKT MNAL | 970277005 | OSLO |
| HAATRE & RØR VVS AS | 923931015 | SULA |
| HAAVE GRAVESERVICE AS | 921183143 | NOTODDEN |
| HAB CONSTRUCTION AS | 985386854 | BÆRUM |
| HABEX AS | 912544931 | SIGDAL |
| 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 |
| HÆHRE ENTREPRENØR AS | 986420010 | MODUM |
| HÅ ELEMENT AS | 923629211 | HÅ |
| HÆRNES BYGGTJENESTE AS | 970902228 | VESTBY |
| HAFA ELEKTRO AS | 958061838 | LARVIK |
| HAFJELL MASKIN AS | 985369771 | ØYER |
| HAFS ELEKTRO & RØR AS | 934466152 | HYLLESTAD |
| HAFSLO BYGG SERVICE V/KJELL BJØRN NESET | 976265920 | LUSTER |
| HAGA AS | 916774680 | STAVANGER |