 | FRONT ENTREPRENØR AS | 980049159 | OSLO |
| FRØSLID MASKIN AS | 933216497 | NORDRE LAND |
| FROSTAD MASKIN OG TRANSPORT AS | 930161667 | ÅLESUND |
| FROSTA MASKINSERVICE AS | 992737832 | FROSTA |
| FROST ARKITEKTER AS | 914016762 | OSLO |
| FROSTA VVS AS | 992358815 | FROSTA |
| FROSTH INGENIØRER AS | 948333562 | MÅLSELV |
| FROVÅG MASKIN AS | 921559585 | SENJA |
| FRØYLAND ELEKTRO AS | 968989847 | HAUGESUND |
| FRUGÅRD AS | 912492656 | BØMLO |
| FRUSTØL AS | 935665264 | KRISTIANSAND |
| FRYA GRUSTAK AS | 927451867 | RINGEBU |
| FRYA STAV & LAFT AS | 814586782 | SØR-FRON |
| FRYDENLUND VVS AS | 983482007 | HOL |
| FS MASKIN AS | 987990325 | LEVANGER |
| FS MUR AS | 915622690 | KRISTIANSAND |
| FS PROSJEKT Frode Skrindsrud | 996452662 | ØYSTRE SLIDRE |
| FT BYGG AS | 990959722 | GLOPPEN |
| FT-BYGG AS | 916450044 | KRISTIANSAND |
| FT KLIMA AS | 825140832 | SANDEFJORD |
| FT MASKIN AS | 826335122 | KLEPP |
| FUGLESANGDAHL AS | 991836330 | STEINKJER |
| FUGLESTEG AS | 817464912 | LUSTER |
| FUHR BYGG AS | 998885353 | LUSTER |
| FULL-BYGGEKONTROLL AS | 828650262 | ORKLAND |
| FULSAAS MASKIN AS | 831224762 | ROLLAG |
| FUNDAMENTERING AS | 979838336 | TRONDHEIM |
| FUNDAMENTERING OG GRAVING AS | 921366035 | TROMSØ |
| FURE BYGG AS | 996941353 | ÅLESUND |
| FURLAND BYGG AS | 933018083 | KLEPP |
| FURNES BYGG | 988113441 | BERGEN |
| FURUHAUG VVS AS | 927313049 | STAVANGER |
| FURUKVIST BYGG AS | 928240274 | KRISTIANSAND |
| FUSA ELEKTRO AS | 930916935 | BJØRNAFJORDEN |
| FUSIONBYGG AS | 920415059 | INDRE ØSTFOLD |
| FUTHARK ARKITEKTER AS | 979979630 | OSLO |
| FUTURA ENTREPRENØR AS | 988210234 | NORDRE FOLLO |
| FVS ENTREPRENØR AS | 928858030 | ØRLAND |
| FXARK AS | 979561288 | OSLO |
| FYLKESNES NORVALD INGE | 970051317 | BØMLO |
| FYLLINGEN FLIS & MUR AS | 982523230 | BERGEN |
| FYLLINGEN MASKIN AS | 940564999 | BERGEN |
| FYLLING OG BJØRGE BYGG AS | 976034171 | ÅLESUND |
| FYR OG FLAMME AS | 927950502 | HALDEN |
| G2 ARKITEKTER AS | 914811155 | ØYGARDEN |
| GABRIEL ELEKTRO AS | 970923136 | PORSANGER |
| GADA BYGGETEKNIKK AS | 929914147 | OSLO |
| GAGAMA ELEKTRO AS | 942143710 | HAMMERFEST |
| GAIA ENERGITEKNIKK AS | 995849860 | BÆRUM |
| GAIA GEOTEKNIKK AS | 933228703 | BÆRUM |