Tri County Design Center is a family owned and operated flooring and design center started in Petaluma over 30 years ago by Brian Miller. With more than 30 years of experience in the community, we have been fortunate to help many friends and their families, find the perfect floors for their homes. What started as a carpet store, has evolved into a complete flooring solution center. As trends have changed through the years, so has our selection of products to include the latest trends of hardwoods, carpets, vinyl plank and porcelain tiles. The newest addition to our selection of products have been cabinets and countertops.