We have officially finished moving in to our offices at the brand new Warren County Administration Building! New Contact Information: Wendy Nordwald, Warren County Assessor Warren County Administration Building 101 Mockingbird Lane Real Estate Department- Suite 202 Personal Property Department- Suite 204 Warrenton, MO 63383 636.456.8885 (office) 636.456.9024 (fax) You can always head over to our contact page for directions on how to get to our new offices or to simply ask us a question.  Read More +