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Los Altos Home Remodeling
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Home Additions in Los Altos, CA

Room additions, second stories, and home expansions built to match your existing home.

2 - 5 months2-year workmanship warrantyFree Estimates
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Starting at $60,000|Typical range: $60,000 - $250,000
Depends on size, story, and foundation work. Free feasibility consultation.
Home Additions project in Los Altos, CA

About Our Home Additions Service

Need more space without leaving the neighborhood you love? Our home additions add square footage that blends seamlessly with your existing Los Altos home, whether that's a new primary suite, a family room, a sunroom, or a full second story. We handle setback and zoning research, structural engineering, foundation work, framing, and all finishes so the addition looks original, not bolted on. Every project is fully permitted and inspected.

What's Included

Room & primary-suite additions
Second-story additions
Sunrooms & family rooms
Structural & foundation work
Seamless roofline & exterior match
Zoning, setbacks & permits

Our Process

1

Feasibility & Design

We review your lot, zoning, and setbacks, then design an addition that fits the site and matches your home.

2

Engineering & Permits

We produce structural drawings and secure building permits with the City of Los Altos or Santa Clara County.

3

Foundation to Finish

We build the foundation, framing, roof tie-in, and all interior and exterior finishes to match your existing home.

4

Inspection & Handover

We pass final inspection, complete the punch list, and hand over your expanded, move-in-ready home.

Why Home Additions Matters

  • Add space without moving out of Los Altos
  • Seamless match to your existing architecture
  • Fully engineered and permitted
  • Strong return on investment in this market
  • Purpose-built for how your family lives

Frequently Asked Questions

How big of an addition can I build in Los Altos?
It depends on your lot size, floor-area ratio, and setback rules. We research your specific parcel's zoning during the feasibility phase and design to the maximum allowable envelope.
Will the addition match my existing home?
Yes. We match rooflines, siding, windows, and interior finishes so the addition reads as part of the original home, not an obvious add-on.
Do you handle the permits and engineering?
We manage everything: structural engineering, architectural drawings, permit submittals, and all inspections.

Home Additions Service Areas

We provide home additions 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

$60,000

Depends on size, story, and foundation work. Free feasibility consultation.

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Duration

2 - 5 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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