Mark Vellinga joined National Land Realty in 2018. Mark has over 30 years of real estate experience, has been involved in all sales of real estate products, and is a designated CCIM (Certified Commercial Investment Member). His areas of expertise are in land sales, land development, investment product sales, exchanges, and negotiation. He is a graduate of Augustana University in Sioux Falls, SD with a bachelor's degree in business administration....