Learn to use the Massachusetts State Building Codebook. Find the information you need through hands-on experience. Organize your book with easy to use tips and handouts. Preregister by calling CST at 1-978-939-3435. Required texts: 8th Edition Commercial Code Book and 8th Edition Residential Code Book. IECC Energy Code. Architectural Access Code. More information www.contractorsuccess.com. No waivers or discounts available.