Hall Engineering Group Ltd. works with our customers to obtain structural and city approvals for construction permits. They have worked with natural and green homes for years and understand the complexities and beneficial requirements pertinent to sustainable homes. Justin Hall lives in two sustainable homes now in Arkansas and on Greers Ferry lake. They are licensed in Arkansas, Missouri and Oklahoma. Give them a call at 501-588-3355 or email at email@example.com. Visit their website at www.hallengineers.com.