Thornley Associates is a partnership of seasoned building industry professionals with expertise in high-end custom homes, wineries, hotels, resorts, land development, and historic restoration. We have done extensive residential and commercial work throughout the Sonoma-Napa region and beyond. At Thornley Associates, we leverage our many decades of combined experience to the benefit of every one of our projects. We don’t just build buildings, we build relationships with clients, preferred subcontractors, architects, designers, engineers and local officials.