About John Carlson
John Carlson Flanders is an attorney based in Longmont, Colorado, with a diverse legal practice that includes business law, estate planning, real estate law, and energy, oil, and gas law. A member of the Colorado State Bar since 1970, he holds attorney registration number 4262. Flanders has deep roots in Longmont, having graduated from Longmont High School in 1963. His educational journey continued at Stanford University, where he earned a Bachelor of Arts degree in 1967. At Stanford, he was not only an active participant in basketball and track but also engaged in significant civil rights initiatives, including voter registration efforts in Mississippi during the summer of 1963.
After completing his undergraduate studies, Flanders pursued a legal education at the University of Colorado Law School, where he graduated with a Juris Doctor in 1970. While in law school, he interned at the civil rights law firm of Hill, Tucker, and Marsh in Richmond, Virginia. His work there involved researching and drafting briefs on school district civil rights cases that were presented in federal courts. This experience laid a strong foundation for his future legal career, emphasizing his commitment to justice and civil rights. Upon his admission to the Colorado State Bar, Flanders began his legal career at Flanders, Elsberg, Herber & Dunn, LLC, a firm with a rich history dating back to 1871.
His practice has since focused on estate and trust planning and administration, real estate law—including complex water, oil, and gas matters—and various aspects of business law. For over 35 years, he has been recognized as a peer-review AV-rated attorney, evidence of his expertise and professionalism in the legal field. Beyond his legal practice, Flanders has made significant contributions to the Longmont community. He has served as Chairman of the Longmont United Hospital Foundation since 1999, playing a crucial role in supporting healthcare initiatives in the area. His involvement with the Longmont United Hospital Board of Trustees spanned from 1979 to 1988, during which he served as President from 1982 to 1988.
Additionally, Flanders has been an active member of the Longmont Rotary Club, where he has held the position of Editarian and participated on various committees over the years. Flanders is married to Laurie, and together they have five children and eleven grandchildren. His personal interests reflect a well-rounded individual; he enjoys hiking, golfing, skiing, reading, theology, gardening, and world travel. As a member of Lifebridge Christian Church, he continues to engage with his community through both professional and personal endeavors. Flanders remains dedicated to making a positive impact in Longmont, embodying the values of service and commitment that have defined his career and life.
