David Wallin is a President at Eco-Structural Systems. He possess expertise in green building, sustainability, energy efficiency, construction, construction management and 11 more skills. Colleagues describe him as "David is a person with a keen eye to future needs and a cleverness to solve problems in an effective manner. In the time I have known David, I have seen him conceive of a super energy efficient home and bring it to reality. He also is able to design and help build things on different scales from intricate build-out of an attic bedroom to major commercial buildings. In addition, David is also a pleasure to socialize with and I have enjoyed several "games nights" with him."