Jürgen Zwanzig has been registered as a lawyer since 1973. He was partner of the firm until 2021. He advised particularly on engineering, architects and private building law, leasing law as well as tax and criminal tax law.
He was specialised lawyer (Fachanwalt) in tax law. As adviser to the Academy of the Chamber of Architects, North Rhine-Westphalia (“Akademie der Architektenkammer NRW”) (since 1978) and confidential lawyer of the Lower Rhine branch of the German Engineers Association (VDI Niederrheinischer Bezirksverein) (since 1979), Jürgen Zwanzig has made a name for himself as an adviser for the set-up of engineering and architectural companies.