Duffy Construction serves the greater Sacramento region and provides top quality residential remodeling and additions, including whole house remodels, second floor and large scale additions, kitchens, baths, and outdoor living spaces. Free consultations and estimates. Tom Duffy's vocation is home building and remodeling, and he takes a hands-on approach to every project. Outstanding craftsmanship, attention to detail, and owner satisfaction are the hallmarks of his work. As owner and licensed general contractor, Tom has continuously operated Duffy Construction in Sacramento since 1985.