Step 1
Enter an address
We look up the parcel data, zoning district, lot dimensions, and existing structure.
Know exactly what you can build -- before you hire anyone.
ZoneIQ reads local zoning ordinances, California state law, and parcel data to calculate your exact build envelope, flag compliance issues, and generate permit-ready documents in seconds.
Used by agents, architects, and contractors in California
Analysis OutputClear to build
Address
1847 Maple Street, Los Angeles, CA 90039
Zone Code
R1-1XL
Max ADU
1,200 sqft
8
Compliance checks run per property
~30s
Analysis time
2
Document types generated
The old way
- Hire an architect, wait 2 weeks for a feasibility study.
- Discover in plan check that setbacks make the ADU impossible.
- Start over with a variance application.
- Pay $15k before a shovel hits dirt.
ZoneIQ
- Enter an address, get compliance analysis in 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.
How it works
Step 2
Run the analysis
Our rules engine checks 8+ compliance criteria against local ordinances and current CA ADU/SB9 law.
Step 3
Get your report
Build envelope, opportunity ranking, and permit-ready documents with proper code citations -- all in one place.
Features
Build Envelope Calculator
Exact buildable area after setbacks, FAR remaining, lot coverage headroom
Permit Document Generator
ADU permit applications, utility templates, and soils determinations with current state law citations
AI Q&A Mode
Ask "Can I build an 800 sqft ADU here?" in plain language
SB9 Lot Split Checker
Eligibility analysis for California's urban lot split law
Constraint Checker
8 compliance checks: ADU allowance, setbacks, FAR, coverage, parking, historic zones, flood, owner-occupancy
Opportunity Ranking
Ranked list of all buildable options: detached ADU, attached ADU, JADU, garage conversion, addition
The investor edge
The market prices properties on what buyers think they can build. You'll know what they actually can.
Most buyers see a 3/2 on a 6,750 sqft lot and price it as a 3/2. ZoneIQ sees a 3/2 with 1,200 sqft of untapped ADU capacity — with state law preempting the local setback rule that most architects miss. That's the information asymmetry. Run 50 addresses in an afternoon, find the three that no one else has priced correctly, and move first.
$150k+
Typical value add from a code-compliant detached ADU in LA
~30s
Time to know if an ADU is buildable vs. weeks waiting for an architect
SB9
State law that overrides local restrictions most agents don't know exists
Built for real estate professionals
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 exactly how large an ADU they can build and generate the permit narrative to prove it.
Investor / developer
Run bulk address screens. Surface parcels where FAR headroom and state law preemption create ADU yield most buyers miss.
Pricing
Simple, transparent pricing. Cancel anytime.
Free
$0/mo
- 1 property analysis/month
- Build envelope calculator
- Constraint checker
- AI Q&A mode
Recommended
Pro
$100/mo
- Unlimited property analyses
- Full permit document generation (12 types)
- PDF + ZIP export
- Hazard zone reports (flood, fire, seismic)
- Auto-generated site plans
- State law preemption analysis
- Bulk address screening
- Developer API access
- Priority support