About Us

Ganahl Lumber - San Juan Capistrano is your local source for Trex products, offering the complete line of composite decking, railing, and deck lighting.

Ganahl Lumber Company is the oldest lumberyard and hardware supply store in the State of California. Since 1884, we have been a family and employee owned business selling building supplies and hardware for pro contractors and DIY enthusiasts alike.

Our experienced staff would be happy to guide you through the deck design process and help you make the Trex decision that is right for you. Come by and visit us here in Capistrano Beach or at one of our ten convenient store locations today to get you started on building your dream outdoor living space with Trex composite decking.