ADU Builders in Los Altos, California
Families across Los Altos are using accessory dwelling units to solve multigenerational living and generate rental income. As full-service ADU builders, we take Los Altos projects from feasibility to final inspection — designed for the cool microclimates, fog belts and seismic activity.
Typical cost
$265k–$551k
Permit time
4–8 weeks
Est. rent
$2,750+/mo
Population
31,000
Popular ADU types in Los Altos
Our most requested projects in Los Altos are junior ADUs (JADUs) and garage conversions. Newer subdivisions in Los Altos often have tighter side yards, so we frequently recommend attached ADUs or converting an existing garage to keep costs down.
Design-wise, Los Altos homeowners in the Bay Area tend to favor compact, light-filled modern designs that maximize small urban lots.
Building an ADU in Santa Clara County
Every Los Altos ADU we build is engineered around local conditions — especially seismic engineering, sewer lateral rules and high labor costs. We prepare complete plan sets so the city can approve within the state's 60-day review window, typically 4–8 weeks here.
At $2,750–$4,450 per month in rent, a new ADU in Los Altos can pay for itself in roughly 9.4 years.
Los Altos ADU FAQs
How much does it cost to build an ADU in Los Altos?
Most Los Altos ADUs we build land between $265k and $551k, depending on size, site work and finishes. Garage conversions sit at the low end; custom two-story units at the high end.
How long does ADU permitting take in Los Altos?
State law requires cities to act on complete ADU applications within 60 days. In practice, Los Altos permits typically take 4–8 weeks when plans are submitted complete — which is what our in-house drafting team focuses on.
What can I rent an ADU for in Los Altos?
Based on Bay Area rental trends, a new 1-bedroom ADU in Los Altos commonly rents for $2,750–$4,450 per month, putting typical payback around 9.4 years.
What are the biggest challenges for ADUs in Los Altos?
In Los Altos and the wider Bay Area, the issues we plan around most are seismic engineering, sewer lateral rules and high labor costs. We review these during a free feasibility check before you commit.
Is junior ADUs (JADUs) a good option in Los Altos?
Yes — junior ADUs (JADUs) are among the most popular projects we build in Los Altos. Corner lots and alley-access lots in Los Altos are ideal for ADUs with their own street entrance and separate address.
ADU builders near Los Altos
Get a free ADU feasibility check in Los Altos
Tell us about your lot. We'll review zoning, setbacks and utilities and send a ballpark budget — no obligation.