Our products are designed to either the Internation Residential Code or the Oregon Residential Specialty Code (Depending on your build area) While we do have Certification in the Residential code We cannot guarantee that the plans meet code due to the range of variance from build are to build area. Engineering may be required depending on your site conditions and buidling design. Engineering services are available. Call for details or email at customyourway@hotmail.com. We do not copy or base our designs off of other designs. This is a violation of copyright law and not the best way to get your home designed. CYHD really appreciates your time. Thank You for being a guest on our site. CYHD