Construction Expert. CON-1009 is a consultant for a construction company in Southern California. He has over thirty years of construction experience and over seventeen years of electronic experience. He possesses practical, on-the-job experience as a tradesman, as well as experience as a sole proprietor, general manager, salesman, designer, estimator, superintendent, and field instructor. He remains active as a designer and project manager on small projects while focusing his primary efforts on consulting, expert witnessing, and arbitration. CON-1009 has written many articles on construction and electronics.