Welcome to the Coos Bay Builders FirstSource! Our Coos Bay store is your local source for building materials on the Southern Oregon Coast. We offer contractor and installation services, as well as drafting and design for new projects such as windows, doors, siding, roofing and more. You will also find a full assortment of building supplies including treated lumber and engineered wood. One of our sales representatives can even meet with you at your jobsite to make sure you receive what your need. Whether you are building a new or custom home, remodeling or taking on any type of DIY home improvement project, we'll help you get the job done. Come visit us today!