Brandhaug works within a broad spectrum of business law, with various commercial contracts, including transactions particularly within the commercial property industry. He has in-depth knowledge of different aspects of real estate, including construction law and planning and building law. Brandhaug assists in negotiations and regularly litigates before the courts. He has also litigated before the Supreme Court.
Brandhaug holds several directorships in companies engaged in development of real estate, and he is also the chair of the board in SANDS.
Brandhaug has previously worked for Danica Pensjonsforsikring AS, Andersen legal ANS and Advokatfirmaet Selmer DA, before joining SANDS in May 2012.