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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.

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

Dedicated student, track athlete, and now a suspect in the killing of a Burbank teacher

LA Times California · Apr 24

ADU News

UC Regent Jay Sures condemns UCLA student government for criticizing Israeli hostage event

LA Times California · Apr 24

Affordability

L.A. voters doubt government can improve housing affordability, poll finds

LA Times California · Apr 23

New Legislation

Woman says chatbot pushed her son to suicide and these 'guardrails' are crucial

LA Times California · Apr 21

Affordability

Karen Bass seeks council approval of $360-million allocation for affordable housing

LA Times California · Apr 09

Permits & Approvals

Rebuilding permits in Altadena have picked up, but construction lags and financial woes loom

LA Times California · Apr 09

Housing Market

Owners keep thousands of San Diego homes vacant despite high rents. They could soon be taxed

LA Times California · Apr 08

ADU News

California HOA triumphs over ADU law

CalMatters Housing · Apr 06

Affordability

California considering novel idea to boost factory-built housing

LA Times California · Apr 03

1/8 Older →

Legislation

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

Cities