Your Luxury ADU Begins Here. At King David Home Builders, we don’t just add space. we create value, income, and generational living.
Looking for reliable ADU builders in Mountain View, CA? At King David Home Builders, we specialize in accessory dwelling unit construction, backyard cottages, and garage conversion ADUs across Mountain View and the greater Bay Area. Our full-service team handles design, permits, and construction with care and precision.
One design-build team, no subcontractor chaos:
We handle design, engineering, permitting and construction in-house so your project stays fast, coordinated, and stress-free. This avoids the delays that come from 3–5 separate vendors. ADU Builders Los Gatos — streamlined project flow.
Luxury materials + master craftsmanship
We source premium finishes and build to luxury standards that match the Bay Area aesthetic — not builder-grade shortcuts. This means your ADU feels like a high-end private residence, not a “small unit in the backyard.” Luxury ADU Construction Los Gatos.
Clean site management & professional scheduling
Our crews protect landscaping, control dust, and maintain jobsite cleanliness throughout the entire construction phase. You’ll always know what phase we’re in, what’s happening next, and when.
Transparent budgets + real-time communication
No hidden fees, no surprise change orders — we deliver clear scope, transparent pricing, and weekly progress updates. You’ll always know exactly where your investment is going and how your ADU is tracking. Honest ADU quotes Los Gatos.
ADUs that integrate perfectly with your home
We design your ADU to visually blend with your existing main home style, roof pitch, finishes, lighting, exterior tones and hardscapes. The result looks original to the property not an “add-on box.” Architectural-match ADUs in Los Gatos & Bay Area.
Take a look at some of our recently completed custom homes across Palo Alto and the surrounding Bay Area. Each project showcases our commitment to high-end design, quality materials, and expert craftsmanship.






With 15+ years of Home building in the Bay Area and San Jose, we bring high-end craftsmanship, precision design, and smooth permitting support from idea to move-in.
We specialize in:
Detached ADUs
Attached/Side-yard ADUs
Garage Conversions
Multi-Gen Living Additions
Rental-Ready ADUs for Income
Serving, San Jose, Palo Alto, Redwood City & the Bay Area.
Yes — but engineering & grading could increase the structural cost. Sloped lots often require more foundation work, retaining walls, or pier footings — which affects budget. A site visit is needed for an accurate build number
Normally — yes. Garage conversions save foundation + roof costs. But if the existing slab is too old, we may need to upgrade anyway — which changes the math. We evaluate this during the first site visit.
Real timeline = 8–16 weeks permits + 6–9 months build.
Anyone quoting “3–4 months total” is skipping inspections, finishes, and utility scheduling.
This is extremely common. We often design window placement, pergola orientation, and landscaping screening to protect privacy and keep neighbor relationships positive — especially in Bay Area lots where houses are closer.
A quality ADU typically increases appraised value by 2–3× the build cost.
Because it adds a second rentable dwelling, not just sq ft. Lenders are now valuing them as “income-producing accessory units,” not sheds or studios.
Get a Free Consultation with ADU Builders in Mountain View
Ready to unlock the full potential of your property? As trusted ADU builders in Mountain View, 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.