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01

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Enter a property address in California, Florida, or Texas. We pull parcel data from county records in seconds.

02

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Zoning, setbacks, lot dimensions, assessed value — plus what state and local law allows you to build.

03

Run scenarios

ADU, duplex, lot split, multi-unit — see what's possible on your lot with development rules calculated.

Who This Is For

Homeowners

"Can I add a second unit to my backyard?"

Investors

"How many units can I build on this SB 9 lot split?"

Builders & Architects

"What's the max buildable envelope under current zoning?"

Housing News

ADU permits, zoning reform, building code updates — everything builders, architects, and developers need to know.

ADU News

How San Diego Kicked Off an Affordable ADU Building Boom

cayimby.org · Mar 30

ADU News

Your guide to ADUs in Southern California

latimes.com · Mar 24

ADU News

Town adopts new Accessory Dwelling Unit regulations

corneliustoday.com · Jan 31

SB 9 & Lot Splits

The Housing Revolution Is Coming

theatlantic.com · Oct 05

ADU News

Accessory dwelling units – Coming to a neighborhood near you?

canr.msu.edu · Sep 09

ADU News

247-22-000671-TA - Rural Accessory Dwelling Unit (ADU) Text Amendments

deschutes.org · Sep 07

ADU News

Los Angeles takes an honest look at ADUs - The Architect’s Newspaper

archpaper.com · Aug 18

ADU News

I Live in an ADU in My Parents' California Yard to Save Money and Travel

businessinsider.com · Jul 24

ADU News

Going Statewide to Boost ADU Development

shelterforce.org · May 16

← Newer 8/8

Legislation

SB 9 Duplex + lot split
ADU Up to 1,200 sf
SB 1211 Multiple ADUs

Cities