Marin Building Supply is located in a small, industrial building just off of Smith Ranch Road and Redwood Highway Frontage Road. The company specializes in customized doors and windows for your building projects, and it also sells a wide variety of door accessories including hinges, doorknobs and locks. Marin Building Supply runs a small operation and offers personalized customer service that is sometimes hard to find. For more information about its products and services, please give Marin Building Supply a call or stop into the workshop. It's just behind Warm Things.