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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

Accessory dwelling units approved under Wilbraham’s bylaw

thereminder.com · Oct 01

ADU News

Over 550 Massachusetts ADUs approved in first half of 2025

bostonagentmagazine.com · Sep 29

ADU News

WMass communities slow to adopt ‘in-law’ units. But other Bay State municipalities show high interest

masslive.com · Sep 29

ADU News

A couple built a $500,000 ADU in their parents' backyard to afford living in California. It has its pros and cons.

businessinsider.com · Sep 26

ADU News

ADU applications surge statewide under Governor Healey's Affordable Homes Act

mass.gov · Sep 26

ADU News

Southern California woman scammed out of thousands after hiring contractor for accessory dwelling unit - ABC7 Los Angeles

abc7.com · Sep 26

ADU News

Design library could give Bend ADUs another boost - bendbulletin.com

bendbulletin.com · Sep 19

ADU News

Portsmouth board approves accessory dwelling unit as part of candy cottage project

seacoastonline.com · Sep 19

ADU News

Rise of the ‘granny flat:’ New rules bring ADU boom to Sacramento area - Abridged

abridged.org · Sep 18

Legislation

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

Cities