 | HAUGENS RØR AS | 996494705 | ALTA |
| HAUG ENTREPRENØRSERVICE AS | 859462782 | NESODDEN |
| HAUGEN VVA AS | 911566664 | BERGEN |
| HAUGEN / ZOHAR ARKITEKTER AS | 998138590 | OSLO |
| HAUGE OG SØRENSEN VENTILASJON AS | 992111569 | BERGEN |
| HAUGERUD VIKEBY AS | 987647116 | INDRE ØSTFOLD |
| HAUGESUND ELEKTRISKE FORRETNING AS | 912492575 | HAUGESUND |
| HAUGESUND VENTILASJON SERVICE AS | 970968733 | KARMØY |
| HAUGES VVS - PROSJEKT AS | 897913852 | SARPSBORG |
| HAUGLAND RUNE O | 870468652 | BJØRNAFJORDEN |
| HAUG LANDSKAP AS | 997392485 | ASKER |
| HAUGLAND VVS AS | 979987900 | VENNESLA |
| HAUGNÆSS AS | 919455314 | MELHUS |
| HAUGO ENTREPRENØR AS | 918099425 | KVITESEID |
| HAUG OG RUUD AS | 913013999 | LILLEHAMMER |
| HAUKELI HYTTER OG HUS AS | 925186937 | VINJE |
| HAUKELI RØR AS | 912116417 | VINJE |
| HAUK SVEINSSON AS | 976252713 | SKIEN |
| HAUSKE TRE EIRIK LINNDAL | 897089602 | STAVANGER |
| HÅVARDSHOLM MASKIN AS | 925305405 | SVEIO |
| HÅVARD SLETTEN | 970041591 | GJØVIK |
| HAV ELEKTRO AS | 998853710 | AUSTEVOLL |
| HAVERSTAD ENTREPRENØR AS | 938236194 | SØR-FRON |
| HAVERSTAD GRAVESERVICE AS | 926454994 | SØR-FRON |
| HAVIG & ELLINGSEN ENTREPRENØR AS | 998583977 | ENEBAKK |
| HAVIKEN BYGG AS | 826646292 | FREDRIKSTAD |
| HAVNEN ANLEGG AS | 998254981 | SOGNDAL |
| HAW ANLEGG AS | 997389484 | TRONDHEIM |
| HAW ENTREPRENØR AS | 879621992 | TRONDHEIM |
| HB BYGG & TØMRERSERVICE AS | 998026377 | BÆRUM |
| HB KULDETJENESTE AS | 995138395 | SARPSBORG |
| HBP PROSJEKT AS | 821069572 | HORTEN |
| HBV BETONG AS | 986556478 | SUNNFJORD |
| H-BYGG AS | 942687168 | MELHUS |
| HD ARKITEKTER AS | 877470962 | OSLO |
| H. DJØNNE MASKIN | 931718754 | STRAND |
| HD PLAN & ARKITEKTUR AS | 916109474 | FLATANGER |
| H-DRIFT AS | 921693176 | STANGE |
| HEAD ENERGY BRANNCON AS | 993230537 | SANDNES |
| HEAD ENERGY INFRA AS | 920499570 | BERGEN |
| HEAD ENERGY UP AS | 925044229 | BERGEN |
| HEAT ARKITEKTER AS | 999306233 | TRONDHEIM |
| HEATING. AS | 927535238 | OSLO |
| HEBNES TRE AS | 943105111 | SULDAL |
| HEDALEN BYGGSERVICE AS | 996156397 | HORTEN |
| HEDALM ANEBYHUS AS | 975384365 | STANGE |
| HEDDA HYTTER AS | 983532306 | SØR-AURDAL |
| HEDENGREN SECURITY AS | 998845742 | LIER |
| HEFF BYGG AS | 922772142 | NORDRE FOLLO |
| HEFØ BYGG AS | 999574874 | ASKØY |