Home Addition Expert in Clayton CA: 3G Builders & Renovation is Clayton, CA's premier home addition expert, delivering exceptional craftsmanship and personalized solutions for every project. Specializing as trusted ADU builders in Clayton, CA, we design and construct accessory dwelling units that maximize your property's value and functionality. Whether you need a guest suite, rental unit, or multigenerational living space, our experienced team handles every detail — from permits to final finishes. As a leading ADU expert in Clayton, CA, 3G Builders & Renovation combines local knowledge with innovative design to bring your vision to life. Transform your property today with Clayton's most reliable renovation specialists.