Frogn videregående skole - Drøbak

Malera Entreprenør Cerneckas - Frogner

Christiania entreprenør og maskin AS - Oslo

Naboen Utleie AS Berger - Frogner

Harald Frogner AS - Oslo

Hans Haugerud AS - Oslo

Avans Entreprenør AS - Oslo

Kranentreprenøren - Frogner

Flotte Gulv AS - Oslo

Aarseth Boligventilasjon AS - Frogner