Our Mission
ADU Zoning Hub exists to make ADU zoning information accessible, accurate, and actionable for every homeowner in America. We believe that Accessory Dwelling Units are a critical part of solving the housing crisis, and that the biggest barrier to building more ADUs is the complexity of local regulations.
What We Do
We research, compile, and maintain the most comprehensive database of ADU zoning rules in the United States. Our city-specific guides cover everything a homeowner needs to know: maximum sizes, setback requirements, permit processes, fees, construction costs, and rental income potential.
Our Commitment to Accuracy
ADU regulations change frequently as cities and states pass new legislation. We monitor these changes and update our guides regularly. Every data point on our site is sourced from official city planning documents, municipal codes, and verified with local planning departments.
Have a Correction?
If you notice outdated or incorrect information on any of our pages, please contact us and we will verify and update it promptly. Accuracy is our top priority.
How We Make Money
ADU Zoning Hub is a free resource for homeowners. We sustain the site through contractor referral partnerships and affiliate relationships with ADU lenders and prefab manufacturers. When you request quotes through our site, we may earn a referral fee — but there is never a cost to you, and we only partner with vetted, reputable companies.