Prior to entering real estate in 1990, Buen enjoyed a successful career as an engineering surveyor (laterally in management). His initial specialisation has been in residential properties and from 1993 branched into commercial real estate conducting commercial leasing, business broking and sale of investment properties. Buen is a dedicated real estate professional who has a high degree of both technical and practical expertise in all aspects of real estate. He is held in high regard by both the vendors and purchasers he has been involved with as well as his fellow managers and salespeople.