| Foretaksnavn | Org.nr. | Kommune | |
|---|---|---|---|
| XT BYGG OG DRIFT AS | 917859965 | PORSGRUNN |
| XYLEM WATER SOLUTIONS NORGE AS | 918088067 | LILLESTRØM |
| YAR BYGG AS | 922852944 | ASKER |
| YC AMUNDRUD AS | 925552550 | ELVERUM |
| YJ BYGG AS | 930871575 | ASKØY |
| YM CONSULT AS | 823242832 | OSLO |
| YMRO AS | 927210142 | OSLO |
| YRAN & DAHLE ARKITEKTER AS | 926515608 | OSLO |
| YR ARKITEKTER AS | 818946422 | BERGEN |
| YSADESIGN AS | 853606162 | OSLO |
| YSSEN AS | 898803902 | LILLESTRØM |
| YTREDAL DIREKTE | 920698964 | SUNNFJORD |
| YTTERDAHL AS | 929572912 | FARSUND |
| YTTERLI MASKIN AS | 829513722 | RAUMA |
| Z 1 STREK AS | 979574096 | NARVIK |
| ZAZA TIMBER CONSTRUCTION | 826544902 | |
| Z BYGG AS | 926177265 | LILLESTRØM |
| Z-BYGG ZIRAK HASSAN | 925289361 | FARSUND |
| ZEINER BOLIG HÅNDVERK AS | 948974487 | FÆRDER |
| ZENITH ELEKTRO AS | 930349607 | SULA |
| ZENTRA AS | 993077755 | BERGEN |
| ZETHUS AS | 913941241 | ASKER |
| ZIS AS | 914876877 | FREDRIKSTAD |
| ZL BYGG AS | 924365935 | MELHUS |
| ZM RØR AS | 998740533 | SURNADAL |