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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

San José approves the first ADU condominium in California

publicceo.com · Aug 18

ADU News

San Jose becomes first California city to allow sale of ADUs as condos

sfchronicle.com · Aug 15

SB 9 & Lot Splits

California’s first for-sale ADU built in San José. Will it start a housing revolution?

latimes.com · Aug 15

ADU News

NEWS RELEASE: San José Approves the First ADU Condominium in California - City of San Jose (.gov)

sanjoseca.gov · Aug 14

ADU News

The dark side of California's backyard ADU boom: How much do they ease the housing shortage?

latimes.com · Aug 12

ADU News

Independence seeks to regulate accessory dwelling units

linknky.com · Aug 05

SB 9 & Lot Splits

Wesley Yu v. City of East Palo Alto, California

pacificlegal.org · Jul 31

ADU News

Tiny homes cause a stir in some Twin Cities suburbs, but few actually built

startribune.com · Jul 28

ADU News

A new bill could make it easier to build a tiny home in your backyard—here's what to know

cnbc.com · Jul 24

Legislation

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

Cities