Duffy Construction

We are ready to make your dreams of a unique, beautiful, functional, healthy home come to life! Our focus and determination are both solely centered around you, our client. Your satisfaction is what makes us thrive, and is the driving force that helps us to create and renovate the most beautiful homes.

Founded by Herks Costa in Cape Cod in 2004, Herks Carpentry is committed to excellence, quality, and precision craftsmanship. Specializing in custom carpentry, kitchen remodeling, bathroom remodeling, and home building, we turn your vision into reality. Serving Barnstable, Osterville, Chatham, Orleans, Falmouth, Sandwich, Mashpee, Yarmouth, and Harwich, MA, our skilled team uses advanced tools to deliver exceptional finishes, meticulous maintenance, and high-standard construction. From dream kitchens to elegant bathrooms or complete new homes, we exceed expectations every time.