Know what you can build.
Now live in Los Angeles, LA County (including unincorporated communities like Altadena), Pasadena, Glendale, Long Beach, Santa Monica, Malibu, La Cañada Flintridge, and San Fernando.
- Checks parcel geometry and setbacks
- Flags ADU capacity with caveats
- Screens SB9 eligibility blockers
- Surfaces state-law override paths
- Runs zoning and hazard checks
- Drafts a site plan from source data
- Generates permit narratives with citations
- Checks parcel geometry and setbacks
- Flags ADU capacity with caveats
- Screens SB9 eligibility blockers
- Surfaces state-law override paths
- Runs zoning and hazard checks
- Drafts a site plan from source data
- Generates permit narratives with citations
Speed
~30s
That is the time from typing an address to a code-cited build envelope and the documents to back it up. No two-week wait, no guessing.
How ZoneIQ works
Enter an address
We pull the parcel, zoning district, lot dimensions, and existing structure automatically.
Run the analysis
Our engine checks 8+ criteria against local ordinances and current California ADU and SB9 law.
Get your report
Estimated build envelope, ranked opportunities, and permit-application drafts with proper citations, in one place.
One tool for the whole feasibility picture.
Build Envelope Calculator
Estimated buildable area after setbacks, remaining FAR, and lot coverage headroom, computed for the specific parcel.
SB9 Lot-Split Checker
Eligibility analysis for California urban lot splits, with the rules that actually apply.
Parcel and zoning, mappedPermit Document Generator
Sixteen document types, from ADU applications to state-law cover letters, each with current code citations.
AI Q&A
“Can I build an 800 sqft ADU here?”
Yes — state law protects at least 800 sqft here, and this parcel’s local standards allow up to 1,200 sqft. Verify setback and height specifics before designing.
8-point Constraint Checker
Opportunity Ranking
Every buildable option ranked: detached ADU, attached ADU, JADU, garage conversion, or addition.
Site plans, drawn to scale
Auto-generate a scaled site plan from the parcel geometry, with setbacks and the proposed ADU placed optimally. Draft-ready for simple detached builds; final submittals still need owner/professional verification.
A faster way to know.
The old way
- Hire an architect and wait two weeks for a feasibility study.
- Find out in plan check that setbacks make the ADU impossible.
- Start over with a variance application.
- Pay $15k before a shovel hits dirt.
With ZoneIQ
- Enter an address and get compliance analysis in about 30 seconds.
- See exactly how large an ADU you can build, and why.
- Generate the permit narrative with state-law citations.
- Know your options before you commit to a design.
The investor edge
The market prices a property on what buyers think they can build. You will know what they actually can.
A 3/2 on a 6,750 sqft lot gets priced like a 3/2. ZoneIQ sees the 1,200 sqft of untapped ADU capacity, and the state law that preempts the local setback most people miss. Run fifty addresses in an afternoon and find the three nobody else has priced correctly.
ADU capacity can change property strategy; verify value with local comps and appraisals
To know if an ADU pencils, versus weeks waiting on a study
State law that overrides local limits most agents never check
Built for the people who move first.
Buyer's agent
Screen listings for hidden ADU potential before writing an offer. Know the upside your client is actually buying.
Listing agent
Back your price with compliance data. Show buyers how large an ADU they can build and hand them the narrative to prove it.
Investor or developer
Run bulk address screens. Surface parcels where FAR headroom and state-law preemption create ADU yield most buyers miss.
Questions, answered.
Enter any California address and ZoneIQ pulls the parcel and zoning, estimates the build envelope after setbacks, FAR, and coverage, checks state ADU and SB9 law, ranks your buildable options, and drafts permit-application documents with code citations.
Transparent pricing.
One plan, $35/mo. Add teammates for $25/seat. It pays for itself on the first deal.
Pro
$35 /mo
+ $25/mo per additional team seat
- Unlimited property analyses
- AI Q&A mode
- Full permit document generation
- PDF + ZIP export
- Hazard zone reports (flood, fire, seismic)
- Auto-generated site plan diagrams
- State-law preemption analysis
- Shared team workspace
Know before you build.
Subscribe and see what any parcel is really worth before you write an offer.