David MacLellan President Pacific InterWest Building Consultants, Inc.        Publications: California Building Performance Guidelines for Residential Construction, 2006 National Home Maintenance Manual, 2004 The Handbook of Specifications and Scopes of Work for Trade Contractors, 2005

David MacLellan is a 30-year veteran home-builder in Northern California. His experience in the building industry extends to all types of housing. Dave is a long-time member of the Home Builders Association of Northern California and is a current Director of the California Building Industry. He graduated with both a Bachelor’s and a Master’s degree in engineering from Penn State University.

Mr. MacLellan has co-authored three important books on the subject of building performance guidelines and home maintenance. His books include the California Building Performance Guidelines for Residential Construction, The National Home Maintenance Manual, and most recently, The Handbook of Specifications and Scopes of Work for Trade Contractors. Dave has been instrumental in providing industry standards in residential construction that benefits both the builder as well as the homeowner.

Mr. MacLellan’s company, Pacific Interwest Inc., is a building services firm that serves the construction and real estate industry in California and many other Western states. His company provides third party construction inspections and construction defect litigation advice. Mr. MacLellan also facilitates educational seminars designed to improve the skill levels of customer service personnel and field superintendents in the home building industry. For more information about either the training seminars or any of Mr. MacLellan’s three books please visit www.pacificinterwest.net

Pat Simpson
Pat Simpson , currently the host of HGTV's Fix It Up! , Room To Improve, and Before & After, has been involved in radio, home improvement and television productions for more than two decades. In addition to his three programs currently seen by over 90 million households on Home & Garden Television (HGTV), Pat previously hosted programming on The Nashville Network (TNN), The Family Channel and syndicated television stations across the country. As far as where Pat got his experience in construction, well he learned that from his Dad, brother and friends who were contractors and builders. Over the years he has had the opportunity to be involved in everything from foundations to roofing and many points in-between. When not on location for television and radio, he can be seen in more than 25 major markets annually for media tours, public appearances at Home Shows, Home Center Grand Openings and as spokesperson for various nationally known manufacturers. In fact, even though he spends most every day working with or being around tools and projects for the shows, Pat still spends some of his off time in his own shop and on some of his personal remodeling projects. Now that his lake house remodel is complete, he's tackling another one down on the Gulf of Mexico. He is also a contributing writer for consumer and trade publications.

George E. Wolfson, AIA

George Wolfson is a registered architect in California and New York, Licensed General Contractor (B), Licensed Real Estate Broker, NCARB certificate holder, and co-author of three books on residential construction quality and maintenance. Mr. Wolfson has over 40 years’ experience in home construction. He has provided expert witness testimony in litigation and/or has served as mediator for over 200 construction-related cases. He holds advanced degrees in architecture with graduate studies in engineering/science, urban studies, real estate, architecture, construction and business management. Construction experience includes over two million square feet of commercial space and 15,000+ housing units. Mr. Wolfson served as VP and CEO for general contracting firms for 15 years. Project experience includes the new town of Reston, VA, the research center for the Pegasus satellite system, the Lower Manhattan Plan, and the Ballet Theater at Lincoln Center, NY. He served as Chief Urban Designer/Planner for the Baltimore Regional Rapid Rail System and the Santa Barbara and Eureka Freeway investigations. Mr. Wolfson holds a B/BS in Architecture, an MS in Architecture, and pursued graduate studies at Rice Institute and Milan Polytechnic.