J.W. Mumper Construction, Inc. has been serving families in central Pennsylvania for over 32 years. From Mechanicsburg to Harrisburg and the surrounding areas, we specialize in designing and building custom homes. Jim Mumper and his experienced support staff and carpenters will work with you to create the home of your dreams. Our carpenters have an average of 22 years in the construction business, and their workmanship is of the highest quality. We are proud and humbled by the fact that over the years, dozens of customers have trusted us to build homes for them a second time and we have been honored to build homes for some of our customer’s children. We take pride in having earned a reputation for producing high quality homes with knowledgeable and professional employees.