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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

Flagstaff Announces Accessory Dwelling Unit Design Winners

signalsaz.com · Apr 07

ADU News

Snohomish County Relaxes Urban Accessory Dwelling Rules Ahead of State Deadlines

theurbanist.org · Mar 31

ADU News

Butte County launches pre-approved accessory dwelling unit and small residential home plans

actionnewsnow.com · Mar 21

ADU News

Snohomish County Revises Accessory Dwelling Unit Regulations

myeverettnews.com · Mar 20

SB 9 & Lot Splits

Can an ADU Online Gallery Ease California’s Housing Woes?

govtech.com · Mar 14

ADU News

Montclair Council Considers Update to Accessory Dwelling Unit Law

montclairlocal.news · Mar 12

ADU News

Accessory Dwelling Units - Andover, MA (.gov)

andoverma.gov · Mar 11

ADU News

Do homeowners associations trump CA’s ADU laws?

calmatters.org · Feb 21

ADU News

ADU Resolution Approved by City Council - picketfencemedia.com

picketfencemedia.com · Feb 21

Legislation

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

Cities