 | OPTIMAL ENTREPRENØR AS | 999169449 | FREDRIKSTAD |
 | OPTIMAL RØRSERVICE AS | 919329114 | FROGN |
 | OPTIMERA AS | 967013056 | OSLO |
 | OPTIMERA BYGGSYSTEMER AS | 979658125 | OSLO |
 | OPUS BERGEN AS | 921610602 | BERGEN |
 | OPV CONSULTING AS | 917880697 | OSLO |
 | ØRA ELEKTRO AS | 827026042 | SUNNDAL |
 | ØRA RØR AS | 929473698 | SUNNDAL |
 | ORIGO ARKITEKTGRUPPE AS | 943577374 | BERGEN |
 | ORIGON AS | 933374580 | BÆRUM |
 | ORION VAKTMESTERSERVICE AS | 983074200 | TRONDHEIM |
 | ORKDAL VARME OG SANITÆR AS | 980557413 | ORKLAND |
 | ORKLA BLIKK & VENTILASJON AS | 993794996 | ORKLAND |
 | ORKLA LAFT AS | 986471219 | ORKLAND |
 | ORKLA MARDAHL AS | 913684281 | ORKLAND |
 | ORKLAND-BYGGTJENESTER AS | 930878383 | ORKLAND |
 | ORKLAND KLIMA- OG KULDETEKNIKK AS | 922284032 | ORKLAND |
 | ORKLAND VVS AS | 922822174 | ORKLAND |
 | ORKLA STÅLKONSULT AS | 991235787 | ORKLAND |
 | Ørnulf Wiig Installasjon A/S | 917339236 | BÆRUM |
 | ORONA NORWAY AS | 984176503 | HAMAR |
 | ORSTAD RØR AS | 989067621 | KLEPP |
 | ØRSTA VEDLIKEHALD AS | 958339216 | ØRSTA |
 | OSBYGG AS | 998256259 | BJØRNAFJORDEN |
 | OSE AS | 994525174 | ØRSTA |
 | OSE BYGG AS | 927409216 | KRISTIANSAND |
 | OS ELEKTRO AS | 929975049 | BJØRNAFJORDEN |
 | OS ENTREPRENØR AS | 986662707 | OS (INNLANDET) |
 | OSKAR BRUGRAND AS | 974531178 | LÆRDAL |
 | OSKAR JOHANSEN AS | 971082879 | NOTODDEN |
 | OSKAR OG TORMOD WIKE AS | 930705462 | TØNSBERG |
 | ØS KONSULT AS | 989193139 | ASKER |
 | OSLAND MASKIN AS | 912309142 | KLEPP |
 | OSLO-AKERSHUS RØRLEGGERBEDRIFT AS | 994920790 | OSLO |
 | OSLO BAD AS | 995797267 | OSLO |
 | OSLO BAD & FLIS AS | 931298739 | OSLO |
 | OSLO BAD & RENOVERING AS | 813498952 | OSLO |
 | OSLO BLIKKENSLAGERMESTER AS | 922541639 | OSLO |
 | OSLO BYGGASSISTANSE AS | 916093632 | NORDRE FOLLO |
 | OSLO BYGGENTREPRENØR AS | 950030119 | OSLO |
 | OSLO-BYGGENTREPRENØR AS | 921331932 | ULLENSAKER |
 | OSLO BYGGMESTER SERVICE DRIFT AS | 932691175 | SØR-ODAL |
 | OSLO BYGG OG MONTASJESERVICE AS | 925015008 | OSLO |
 | OSLO BYGGREHAB AS | 917016283 | OSLO |
 | OSLO BYGG TEKNIKK AS | 914731224 | OSLO |
 | OSLO ELECTRO COMPANY AS | 963983549 | OSLO |
 | OSLO ELEKTRISKE AS | 961732778 | OSLO |
 | OSLO ENTREPRENØR AS | 964676607 | OSLO |
 | OSLO ENTREPRENØRBEDRIFT AS | 913155637 | OSLO |
 | OSLOFJORDEN BYGG AS | 976465415 | RÅDE |