Turnbull-Wahlert traces its roots to 1995 when Stewart Turnbull founded Turnbull Construction Company. Realizing the need to expand, additional partners were added to the company in late 2003 forming Turnbull-Wahlert Construction, Inc. In 2005 Turnbull-Wahlert was ranked #6 on the Fast 55 list by the Business Courier. In 2007, the company ranked #11 on the Inc. 500 list as one of the fastest growing companies in the country. Our growth continues with 2015 being a record-breaking year. Turnbull-Wahlert Construction - Building Projects and Lasting Partnerships.