BTL Engineering, P.S. is a consulting structural engineering firm founded in 2001 and located in downtown Woodinville, Washington. The principals at BTL Engineering bring over 35 years of experience in a wide variety of projects resulting in the successful steady growth of the company. BTL Engineering provides structural analysis, design and construction services for residential, commercial, industrial, educational and recreational buildings. We are proficient in all combinations of wood, steel, masonry and concrete