Need more space? Build an ADU with Sigura Construction
Sigura Construction is a specialized Palo Alto ADU contractor that custom builds high-quality accessory dwelling units (ADUs) and garage conversions. We only do fully permitted and code-compliant builds and handle the entire process from A to Z, from custom design, permitting, construction, and final walkthrough.
With 24 years in the construction industry, an A+ BBB rating, and Diamond Certified status for 18 years, we're your trusted ADU construction company serving the San Mateo and Santa Clara counties.Â
Navigating Palo Alto ADU Rules: What You Need to Know in 2025-2026
Palo Alto has become much more ADU-friendly thanks to updated state laws and the city’s 2025 ADU ordinance updates. With ministerial approval and access to streamlined pathways, building a backyard home or attached unit is more achievable than ever!
Key Highlights:
- No minimum lot size — ADUs from ~150 sq ft up to 900–1,000 sq ft (depending on bedrooms and whether attached or detached)
- 4 ft side and rear setbacks (state minimums strongly apply)
- Height limits typically 16 ft for detached ADUs (up to 18 ft near transit corridors or on certain multifamily lots)
- No owner-occupancy requirement for standard ADUs
- Ministerial (by-right) approval — no public hearings for most qualifying projects
- EV readiness, 2025/2026 California energy codes, and green building standards usually required
- We handle it all: zoning review, site-specific design adjustments, permit submittals, and coordination with Palo Alto Planning & Building to keep your project moving smoothly.
Many clients are seeing permits approved in just weeks when plans are prepared correctly.
If you searched "ADU contractor near me" and you're planning a space for family members in the Bay Area's competitive housing market or looking for maximize your rental income potential, you've come to the right place! With 24 years experience, A+ BBB rating, and Diamond Certified for 18 years, we're your premier ADU builder and garage conversion contractor serving San Mateo and Santa Clara counties.
Types of ADUs We Build
From attached ADUs to detatched (backyard studios), or converted from existing structures such as garages.
Detatched ADU
Attached ADU
ADU Conversion
Talk to us about your project!
We're all ears! If you're contemplating the idea of an ADU, wanting a home within a home or a separate one on your own property. Contact us, let's talk about it.
The Benefits of an ADU in Palo Alto
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Keep Family Close
For guests, parents, in-laws or adult children who can't afford Palto Alto home prices that keep increasing. This is a great alternative.
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Boost Your Property Value
Want to boost your property value by 20-50%? They're recognized as potential for separate income-producing potential, which makes your home even more desirable.
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Personal Workspace or Gym
Since there's not owner occupancy requirements in Palo Alto, you can use your ADU as a studio, gym or any hobbies you're into! -
AirBNB Rental Income
Start making $2,500-$5,000/month renting out your ADU with apps like AirBNB, especially in Silicon Valley / Bay Area!
Our Completed Projects Across the Bay Area
Ralph
Morgan Hill Remodel
Eagle Dr
Sunnyvale Home Remodel

Englewood
San Jose Home Addition
Webster
Palo Alto Remodel
Frontenac
Sunnyvale Home Remodel
What Homeowners Say About Us
Need an ADU, Fast?
Sigura Construction is your trusted ADU contractor serving San Mateo, Santa Clara, and the greater Bay Area. Whether you’re planning a garage conversion, home addition, or a custom ADU build, we’ll bring your vision to life with precision and care.