About Us Finding the right attorney starts with understanding the legal matter at hand. As a civil practice law firm, we can assist you with a wide range of legal disputes in and out of the courtroom. Contact the Law Offices of Brian D. Thiessen if you need a... Divorce attorney Child custody attorney Contract dispute attorney Mediation/arbitration attorney Property law attorney Navigating the legal system can be complicated. Make sure you have a reliable family law firm on your side. Schedule an appointment with us today by calling 925-837-3355.