LedgeX
In private testing. San José single-family lots.

What the data shows you can do with your land.

LedgeX reads a San José lot’s public records and shows what they allow, with the source for every fact.

Request early access Start with the ADU guides
STREET FRONTAGE
50.00' 125.00' R-1-8
N

Drag to turn the lot. Tap a tag to see what LedgeX knows about it.

Keyboard: Tab to the lot, then use the arrow keys to turn it.

SAMPLE LOT · ILLUSTRATIVESolid = known · Dashed = not known

New from LedgeX Research

All research

Start with the question you have.

Short answers from LedgeX Research, marked the same way a Property File marks every fact.

Known limit

In San José, yes, if the lot has a legally built home with approved permits and no open code enforcement case.

City of San José, ADU Universal Checklist (Bulletin #210, updated Sep 16, 2026)

Read the San José ADU guide

A Property File gives these answers for one San José lot, each with its status and source. Request early access

The answers are spread across six places.

To know what a lot allows, you check the county parcel map, the city zoning map, the permit search, state ADU law, the city’s ADU rules and the hazard maps. Each one names the lot differently.

  • Parcel mapCounty assessorSearched by APN
  • Zoning districtCity planning layerSearched on a map
  • Permit historyCity permit searchSearched by address
  • ADU rulesCity ADU bulletinA PDF
  • ADU lawState of CaliforniaStatute text
  • ConstraintsHazard and overlay mapsSeveral map layers
One Property File

  1. Pick a San José parcel.

  2. LedgeX reads the public city, county and state records that apply to it.

  3. They're automatically assembled into one Property File.

Example Property File

Every fact shows where it came from.

One page per lot. Each line says whether the records answer it, need something from you, or can’t answer it at all.

Property File

Sample San José lot, R-1-8, 6,250 sq ft

Example
  • Zoning districtKnown limitR-1-8 Single-Family ResidenceCity of San José zoning layer, retrieved 2026-10-02
  • Lot areaKnown limit6,250 sq ftSanta Clara County assessor, retrieved 2026-10-02
  • Side and rear setbacks for a detached ADUKnown limit4 ftCalifornia ADU law, retrieved 2026-10-02
  • Unit sizeNeeds your inputThe allowed size depends on the unit you plan to build. Enter it to check it against the limits.
  • Private easementsCan't determinePublic records don't show private easements. A title report will.

Illustrative example. Figures are for a sample lot, not a real parcel.

The bigger picture.

LedgeX Research also follows the money, risk and policy that move property values. Same rule: every figure cites its source.

The Bigger Picture$10B of $36.25BThe part of the $36.25 billion that taxpayers repay

California Just Approved More for Housing Than Hawaiʻi’s Entire State Budget: Props 1 and 37 Explained

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$178General fund bank account, week of Sept. 21, 2026

Hollister’s financial emergency

11 min read, Oct 16, 202627.7%City office vacancy in Q3 2026, down from a 36.9% peak

Has San Francisco real estate priced in AI?

11 min read, Oct 15, 2026

San José first.

More cities only where the public data meets LedgeX’s standards.

San José, in private testingNext cities, when the data qualifies

Partners and investors: team@ledgexproperties.com