Hartz Construction 966 Amethyst Ln, Montgomery, IL60538 Hartz Construction is in the business of building affordable homes. The compay works with private residences,…More condominiums and townhomes in Montgomery and the surrounding areas. It collaborates with clients to make sure the future home has everything desired. Hartz homes are known for offering top-of-the-line appliances and for being beautifully crafted to the client's satisfaction. The company works with a range of budgets.