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Everything you need to assess any property

Professional-grade ADU feasibility reports powered by official municipal data

Instant Feasibility

Get immediate pass/fail ADU eligibility with detailed zoning analysis, lot coverage, and buildable area calculations—all from official municipal data sources.

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Standard Plans

Match properties to pre-approved ADU designs for faster permitting

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Amnesty Detection

Identify AB 2533 amnesty eligibility for unpermitted structures

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AI Code Search

Ask natural language questions about specific zoning regulations

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Buildable Envelope

Visualize maximum buildable areas with setback calculations, height limits, and lot coverage requirements.

Built for professionals

Save hours on every ADU feasibility assessment

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Architects & Designers

Instantly assess site feasibility before committing design hours. Know setbacks, max sizes, and standard plan options upfront.

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Developers & Investors

Screen properties at scale. Identify ADU potential across portfolios without manual zoning research.

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ADU Builders

Generate accurate quotes faster. Match homeowners with pre-approved standard plans that fit their lot.

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Homeowners

Understand what's possible on your property before hiring an architect. Get clarity on size limits and requirements.

Ready to check your property?

Get instant ADU feasibility analysis for any address in LA, Berkeley, or Oakland.

Results in 30 seconds • 100% official data

⚠️ ZoningOS provides preliminary zoning analysis only. Reports require verification by a licensed professional. This is not legal or professional advice. Full Disclaimer