Can I Build an ADU?

Enter your address and get an instant AI-powered feasibility report. Setbacks, max size, costs, timeline — all in 60 seconds.

Free No commitment Bay Area Peninsula & South Bay only

PENINSULA & SOUTH BAY

Analyzed lot

Get Your ADU Report

Free analysis of what you can legally build.

How it works

From address to action plan in 60 seconds.

Enter Your Address

We pull lot data, zoning, and setbacks from public records — no surveys, no waiting.

AI Analysis

The Permit Pro evaluates your lot using current Bay Area regulations and city-specific quirks.

Get Your Report

Instant feasibility report with allowed types, max size, build cost, timeline, and ROI.

Frequently asked

Questions, answered.

Is this analysis accurate?

It uses publicly available zoning data and current CA ADU laws. For permit-grade analysis, consult a permit professional. Our AI is trained on 1,000+ Peninsula & South Bay ADU approvals.

What cities do you cover?

All of San Mateo and Santa Clara counties: San Jose, Sunnyvale, Palo Alto, Mountain View, Redwood City, Daly City, San Mateo, Cupertino, Los Gatos, Campbell, and 10+ more.

Do I need to make any commitments?

No. The analysis is free. No purchase, no obligation. Just useful data.

How accurate are the cost estimates?

Cost ranges are based on current Peninsula construction rates ($250–450/sqft for detached ADUs). Actual costs vary based on finishes and site conditions.

What if my city has special rules?

The Permit Pro knows city-specific quirks like Palo Alto's ARB review, Mountain View's CSFRA, and Sunnyvale's OTC permits. We flag any unique requirements in your report.

Can you help me actually build the ADU?

Our AI provides analysis. For construction, we partner with vetted Bay Area contractors. Reply to your report email and we'll connect you.