THE TIEHEN GROUP, INC. is a full service, professional real estate company focused on management, renovations, and investment brokerage for multi-family and office assets. Mike Tiehen and Jim Tiehen are a father and son team who are fully committed to the real estate profession, with over 65 years of combined experience. Jim Tiehen is one of only a few real estate professionals who holds both Certified Property Manager (CPM) and Certified Commercial Investment Member (CCIM) designations.