Onyx General Construction Company

We are a trusted local general contractor construction company specializing in ADU accessory buildings, home room additions, commercial construction, remodeling, and home improvement projects. From accessory dwelling unit ADU conversions and home additions to full renovations, our services cover projects of all sizes. We excel in foundation work, including seismic retrofitting, as well as major remodeling projects that include kitchens and bathrooms with unique design and appeal. Whether you're upgrading foundations or designing a new structure, our expert team delivers high-quality craftsmanship. We also provide comprehensive building plans and designs to ensure that every project aligns with your vision.