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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

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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

States are making ADUs easier to build. Now it’s up to municipalities to follow suit.

housingwire.com · Nov 11

ADU News

The Safe Way to Add an ADU

energized.edison.com · Oct 29

ADU News

First Accessory Dwelling Unit Approved in City

doorcountypulse.com · Oct 24

ADU News

California ADU Laws Expected To Boost Affordable Inventory

nationalmortgageprofessional.com · Oct 16

ADU News

Governor Newsom Signs Three New Accessory Dwelling Unit Bills

publicceo.com · Oct 02

ADU News

Some Wisconsin communities hope granny flats can alleviate the housing shortage

wpr.org · Sep 19

SB 9 & Lot Splits

July 2024 Structure Separation Burn Experiment - California Air Resources Board (.gov)

ww2.arb.ca.gov · Sep 18

ADU News

Harrell Proposal Would Relax Accessory Dwelling Unit Rules, Implement State Law

theurbanist.org · Sep 18

ADU News

What is the new California ADU Law?

nixonpeabody.com · Sep 09

Legislation

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

Cities