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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.

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

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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

Sacramento County sees sharp increase in Accessory Dwelling Unit permits amid CA housing crisis

kcra.com · Sep 12

ADU News

Accessory Dwelling Units (ADUs) in California

bipartisanpolicy.org · Sep 12

ADU News

ADUs are popping up in California. Are they really ‘affordable’ to renters?

sacbee.com · Aug 04

ADU News

Plus One ADU Program - Homes and Community Renewal (.gov)

hcr.ny.gov · Jul 01

ADU News

Placer County offers new pre-reviewed accessory dwelling unit plans - Placer County Website (.gov)

placer.ca.gov · May 19

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

ADU News

Accessory dwelling units – Coming to a neighborhood near you?

canr.msu.edu · Sep 09

← Newer 6/6

Legislation

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

Cities