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ADU Construction in Los Altos, CA

Detached and attached ADUs (granny flats) designed, permitted, and built end to end.

4 - 8 months2-year workmanship warrantyFree Estimates
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Starting at $150,000|Typical range: $150,000 - $400,000
Depends on size, detached vs. conversion, and site conditions. Free feasibility review.
ADU Construction project in Los Altos, CA

About Our ADU Construction Service

Accessory Dwelling Units are one of the smartest ways to add value and flexible space to a Los Altos property, whether for family, guests, a home office, or rental income. We design and build detached ADUs, garage conversions, and attached units that comply with California ADU law and local Los Altos requirements. From site planning and utility connections to a fully finished kitchen and bath, we deliver a turnkey, permitted ADU built to the same standard as the main home.

What's Included

Detached ADUs & garage conversions
California & Los Altos ADU compliance
Full kitchen & bathroom build-out
Separate utilities & metering
Site planning & landscaping tie-in
Turnkey design-build delivery

Our Process

1

Site & Feasibility

We evaluate your lot for ADU potential, size limits, and utility routing, then design a unit that fits your goals.

2

Design & Permits

We produce plans compliant with state ADU law and Los Altos rules and manage the permit process start to finish.

3

Construction

We build the foundation, structure, utilities, and a complete interior including kitchen and bath finishes.

4

Final & Occupancy

We pass inspections, obtain the certificate of occupancy, and hand you a move-in-ready, income-ready ADU.

Why ADU Construction Matters

  • Add flexible living space or rental income
  • Fully compliant with California & Los Altos ADU rules
  • Turnkey design-build, permits included
  • Built to the same standard as the main home
  • Strong long-term value in Silicon Valley

Frequently Asked Questions

Am I allowed to build an ADU in Los Altos?
Most single-family lots in Los Altos qualify under California ADU law. We confirm your specific parcel's eligibility, size limits, and setback requirements during the free feasibility review.
Can an ADU generate rental income?
Yes. A well-built ADU can produce meaningful rental income in the Silicon Valley market, in addition to adding long-term property value.
Do you build detached units or only conversions?
Both. We build new detached ADUs, convert existing garages, and construct attached units, whichever best fits your lot and budget.

ADU Construction Service Areas

We provide adu construction across Los Altos and the Silicon Valley peninsula, including:

Los Altos HillsMountain ViewPalo AltoSunnyvaleCupertinoSaratogaLos GatosMenlo ParkSanta ClaraCampbellAthertonPortola Valley

Get a Free Quote

Free in-home estimate

Starting at

$150,000

Depends on size, detached vs. conversion, and site conditions. Free feasibility review.

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Duration

4 - 8 months

Warranty

2-year workmanship warranty

Other Services

Why Choose Us

  • Licensed & Insured
  • Design-Build Team
  • Permits Handled
  • Free Estimates
  • Los Altos Local
  • 2-Year Workmanship Warranty

Get Your Free Estimate Today

Whether you're planning a kitchen or bathroom remodel, a whole-home renovation, an addition, or an ADU, our team is ready to help. Text us or fill out the form for a free estimate.

Text Us for a Free Estimate

Licensed

& Insured

Design

Build Team

13+

Cities Served

Free

Estimates Always

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