Build a custom ADU in Fremont, CA with King David Home Builders. We handle design, permits, and construction to create code-compliant ADUs that add rental income, expand living space, and increase long-term property value.
Over 30 years of experience, 100+ ADUs built, and fully licensed, bonded, and insured.
Looking to add rental income, expand living space, or build a private unit for family?
King David Home Builders is a trusted ADU builder in Fremont, specializing in custom Accessory Dwelling Units (ADUs) that meet California regulations, maximize property value, and are built to last.
From design and permits to construction and final inspection, we handle everything.
Take a look at some of our recently completed custom homes across Santa Clara and the surrounding Bay Area. Each project showcases our commitment to high-end design, quality materials, and expert craftsmanship.






Every property in Freemont is different and your ADU should be too. We design and build:
ADUs are one of the fastest-growing real estate investments in Fremont.
The cost of building an ADU in Fremont depends on the ADU type, size, materials, and site conditions. Garage conversions are typically more affordable, while detached ADUs require a higher investment. We provide a free, detailed estimate after evaluating your property.
Most ADU projects take 4 to 9 months, including design, permits, and construction. Timelines vary based on city approvals and project complexity.
Yes. King David Home Builders handles all ADU permits, zoning reviews, and inspections with the City of Fremont to ensure full compliance with California ADU laws.
We build detached ADUs, attached ADUs, garage conversion ADUs, and Junior ADUs (JADUs) all custom-designed for Fremont properties.
Get a Free Consultation with ADU Builders in Freemont
Ready to unlock the full potential of your property? As trusted ADU builders in Freemont, we deliver high-end accessory dwellings that blend design, value, and practicality.
Schedule a free consultation today and see how we can bring your ADU vision to life on time, on budget, and with exceptional care.