Mark Irwin Associates

Irwin Build is a design-build remodeling firm rooted in Bucks County, Pennsylvania, focused on whole-house renovations, home additions and custom projects. Brothers Sean and Ryan Irwin lead the company, which started as their father's business in 1987. Kitchen and bath remodels, basement remodeling and commercial remodeling are also part of the work.

Because one team handles design and construction, homeowners work with the same group from concept through completion. Projects are planned weeks ahead with a dedicated project team, and the company prefers to work within about 15 miles of each job site. The office is based in Doylestown.