ADU Construction & Conversion Services in Fremont, CA

At Bayco Builders and Restoration, we specialize in the design, construction, and conversion of Accessory Dwelling Units (ADUs) for homeowners across San Jose, Palo Alto, Redwood City, Fremont, Santa Ana, Menlo Park, Belmont, and surrounding areas. With over 15 years of building experience, we understand the value an ADU can bring—whether you’re looking to create a rental unit for additional income, a private in-law suite, a comfortable guest house, or a fully functional home office. Our team provides complete, end-to-end ADU solutions, including detached new construction, garage conversions, basement or attic transformations, and attached additions that blend seamlessly with your existing home. We manage every detail, from initial planning and architectural design to permits, inspections, and final construction, ensuring your ADU meets all local codes and quality standards. With a reputation for craftsmanship, transparency, and customer-first service, Bayco Builders delivers ADUs that are not only beautiful and practical but also a smart investment in your property’s long-term value. Whether you’re expanding for family, functionality, or financial growth, you can trust our team to guide you every step of the way and build a space that fits your lifestyle and vision.