Apex Homes is a full-service ADU design-builder based in Cupertino, serving communities across Northern California, including Silicon Valley and the greater Bay Area, as well as Southern California, including the Inland Empire and Los Angeles County. We specialize in both custom-designed and pre-designed accessory dwelling units, from a 495 sq ft one-bedroom to a 991 sq ft three-bedroom plan, with fixed, transparent pricing from first consultation through move-in. Our pre-designed plans are on file as pre-approved with select cities (including Cupertino and Gilroy), meaning faster permitting and lower architectural fees for homeowners there. Every project, including architectural plans, permitting, construction, and final inspection, is managed in-house, so homeowners work with one team start to finish, with typical builds completed in as little as 5 months. Whether adding a detached studio, a junior ADU, or a full second unit, Apex Homes delivers code-compliant builds that increase property value and expand living space across both NorCal and SoCal. Contact us for a free feasibility estimate.