One Team Under One Roof

Everybody at MAC design + build, from the owners to the architects to the construction clean-up crew is on the same team – your team. We are all accountable for meeting your expectations.

  • Justin O'Connell, Senior Estimator
  • Steven Chapman, Marketing
  • Elizabeth Litke, Project Coordinator
  • Benjamin Carstoiu, Architect, NCARB
  • Caitlin Gilhuys - Senior Designer

  • Allison Ugarte- Kitchen and Bath Designer / Social Media

David Stone

Owner and President

David’s responsibilities at MAC design + build is to oversee the project management side of the business once construction has begun.

A graduate of Ithaca College in New York, David got his "official" start in the building industry in 1987 helping his father with roofing projects. He founded MAC design + build with his partner Derek Leiter.

David is married with five children and loves adventure that includes travel, skydiving, powerboating and comedy clubs.

Derek Leiter

Owner and Vice President

Derek’s responsibility at MAC design + build is business development — sales, estimating and design, however, his role is to take clients to wherever their goals are for their projects. He is the first person to meet with clients and the one who drives the entire project, assembling teams, assigning project managers, and staying in touch with the client on a weekly basis.

"We approach our business from a customer service point of view, not as a usual contractor," he says. "We consider it a privilege to work on each customer’s home, and enjoy helping people and creating beautiful designs."

Derek studied physics and engineering in college, but always returned to his love of architectural style. He worked for more than 15 years, selling home improvement products and remodeling services and learning the various trades involved, before co-founding MAC design + build. He is married with two daughters and enjoys volleyball, wine tasting and international travel.