 | HORTEN VVS AS | 913301528 | HORTEN |
| HOSSA HOLDING AS | 991472436 | TRONDHEIM |
| HØSTMARK BYGG AS | 930941441 | BERGEN |
| HOUSE CONCEPT LT NUF | 930592803 | |
| HØVA ELEKTRO AS | 967836257 | BERGEN |
| HØVÅG BYGG AS | 892512132 | LILLESAND |
| HOVDEN HYTTESERVICE AS | 979975902 | BYKLE |
| HOVELAND MASKIN AS | 927038463 | FARSUND |
| HOVIN LAFT AS | 998185939 | RINGERIKE |
| HOVIRO AS | 997158539 | ASKER |
| HOV PROSJEKT AS | 921298331 | MOLDE |
| HOVRUD BYGG AS | 932992876 | ØSTRE TOTEN |
| HOVSTEN CONT & GJENVINNING AS | 912174719 | TRONDHEIM |
| HØYBRÅTEN RØRLEGGERBEDRIFT AS | 923701753 | OSLO |
| Høyer Odda AS | 939685154 | ULLENSVANG |
| HØYLANDET RØR AS | 913162854 | HØYLANDET |
| HØYSPENT ØST AS | 917741212 | OSLO |
| HØYT & LAVT AS | 986565817 | RINGERIKE |
| HØYVEG MEKANISKE VERKSTED AS | 940471079 | DOVRE |
| HPH BYGGENTREPRENØR AS | 921399219 | FREDRIKSTAD |
| HP HOLM BYGG & TØMRERMESTER AS | 917152020 | HALDEN |
| HR BYGGMESTERFORRETNING AS | 928743748 | ASKØY |
| HR ENTREPRENØR AS | 914895731 | OS (INNLANDET) |
| HR FJELLSPRENGNING AS | 919393823 | ALVER |
| HRL ENTREPRENØR AS | 987259760 | PORSGRUNN |
| HRO AS | 932760630 | RINGERIKE |
| HRP AS | 988889245 | OSLO |
| HR RØR AS | 912666344 | OSLO |
| HRS ELEKTRO AS | 926858335 | OSLO |
| HR SPRINKLER AS | 913566793 | OSLO |
| HRTB AS | 912838161 | OSLO |
| H SÆTHER VVS AS | 988393975 | HITRA |
| H SANDVIK AS | 989482920 | ALVER |
| H/S ANLEGG AS | 930374067 | AURSKOG-HØLAND |
| H.S ANLEGG AS | 992839783 | HOLMESTRAND |
| H.S BYGG AS | 931903101 | SELBU |
| HS BYGG AS | 936854044 | STRYN |
| H/S ELEKTRO AS | 926523740 | INDRE ØSTFOLD |
| HS KAPSTAD AS | 994000691 | SUNNFJORD |
| HSN BYGG AS | 898356612 | OSLO |
| HSPROSJEKT KHASRAW SABIR | 933818268 | FREDRIKSTAD |
| HS RISE BYGG AS | 955880447 | HAREID |
| HS TØMRER SERVICE AS | 920734197 | HOLMESTRAND |
| HSV BYGGSERVICE AS | 922123926 | GOL |
| HS VVS AS | 930177148 | NORDRE FOLLO |
| HSW BYGG AS | 918842551 | OS (INNLANDET) |
| HT BYGG HELLESYLT AS | 964888124 | STRANDA |
| HTC GROUP AS | 930670634 | BÆRUM |
| H.THANKE BYGG AS | 992831286 | ULLENSAKER |
| HTL ELECTRIC GROUP AS | 938235767 | HUSTADVIKA |