ZoneIQ Pro

Complete Westchester Property Intelligence

Proprietary market analysis combined with comprehensive zoning, ownership history, assessment records, and comparable sales data.

📋 Comparable sales research 🏗 Zoning diligence ⚖️ Assessment appeals 🔍 Ownership history 📊 Development screening 🏛 Municipal analysis 📝 Parcel due diligence
35,284 Parcels indexed Across Westchester County
43 Municipalities covered Towns, villages, and cities
$8.2B+ Assessed value tracked Municipal roll totals, covered parcels
847 Assessment gaps flagged Properties assessed above market estimate

Designed for real estate professionals

Whether you are sourcing acquisitions, advising clients, or conducting property due diligence — ZoneIQ Pro delivers the property-level context that matters.

🍸
Investors
Identify undervalued parcels, zoning upside, and assessment appeal candidates across the full county before others do.
🤝
Brokers
Pull comparable sales, verify zoning, and review assessment history before a listing, CMA, or advisory engagement.
🏗
Developers
Screen parcels by zone class, permitted uses, lot dimensions, and setbacks. Surface candidates for acquisition or redevelopment quickly.
⚖️
Attorneys
Research complete ownership chains, confirm legal descriptions, and support tax certiorari proceedings with structured comparable data.
📐
Appraisers
Access structured comparable sets, lot details, and assessment ratios with consistent, well-organized source data.
🏛
Municipal Staff
Review assessment equity across parcels, track ownership changes, and monitor zoning compliance across your jurisdiction.

Research capabilities

01
Comparable sales analysis
Pull recent arms-length sales in any Westchester municipality, filtered by zone class, lot size, and property type. Results include assessed value ratios and transfer history for each comp.
02
Zoning and permitted use review
Retrieve the exact zone designation for any parcel, permitted uses as of right, dimensional requirements, and any variances or special permits on the municipal record.
03
Assessment history and appeal research
Compare assessed value against estimated market value across time. Properties showing material over-assessment are flagged with supporting comparable data — ready for certiorari review.
04
Ownership chain and deed history
Reconstruct the complete ownership record for any parcel: current owner, transfer dates, grantor/grantee history, and deed recording references from the county clerk.
05
Development opportunity screening
Filter parcels across the county by zone class, acreage, year built, and assessment ratio. Surface candidates for acquisition, redevelopment, or subdivision at scale.
Assessment Analysis

Identify over-assessed properties with supporting market evidence

ZoneIQ Pro cross-references municipal assessed values against current market conditions to surface properties where assessed value is materially above estimated market value. These represent potential tax certiorari opportunities — the owner may be overpaying by thousands annually.

Address Town Assessed Market Est. Gap
147 Birchwood Ln Cortlandt Manor $312,000 $428,500 +37.3%
29 Crestview Pl Yonkers $540,000 $491,200 −9.0%
83 Valley Ridge Rd White Plains $185,000 $263,800 +42.6%
11 Hollowbrook Ct New Rochelle $875,000 $798,400 −8.8%
6 Ridgecrest Dr Armonk $224,500 $319,000 +42.1%

Randomized data for privacy purposes.

Parcel Map

Inspect ownership, zoning, and assessment for any parcel

Every parcel in Westchester County is mapped and linked to its ownership record, zone classification, and assessment data.

Small randomized sample only displayed here for privacy purposes.

↑ Click any parcel to view assessment, zone class, and ownership details

Research Reports

Comprehensive property analysis — the IQ to get the competitive edge.

Every ZoneIQ Pro property analysis is delivered as a structured set of reports covering all relevant dimensions of the parcel — ownership, zoning, assessment history, and comparable market activity.

comps
Comparable Sales Report
Recent arms-length sales within the same zone and size range, with assessed value ratios and transfer history. Formatted for direct use in a CMA or investment analysis.
parcel
Parcel Summary Report
Complete record of ownership, deed history, multi-year assessment trend, lot dimensions, building class, and zone designation — all in one structured document.
zoning
Zoning Analysis
Zone designation, permitted uses as of right, dimensional and setback requirements, and any variances or special permits on the municipal record.
export
Structured Data Export
Complete parcel dataset in CSV and SQLite formats — for analysts, attorneys, and professionals who work directly with the underlying records.

Coverage

Parcel data, zoning records, and comparable sales indexed across Westchester County municipalities.

Yonkers
28,341 parcels
Parcels · Zoning · Comps
White Plains
12,304 parcels
Parcels · Zoning · Comps
Mount Vernon
9,817 parcels
Parcels · Zoning · Comps
Cortlandt Manor
4,218 parcels
Parcels · Zoning · Comps
Ossining
3,440 parcels
Parcels · Zoning · Comps
New Rochelle
3,102 parcels
Parcels · Zoning · Comps
Rye
2,156 parcels
Parcels · Zoning · Comps
Tarrytown
2,089 parcels
Parcels · Zoning · Comps
Armonk
1,847 parcels
Parcels · Zoning · Comps
Pleasantville
1,754 parcels
Parcels · Zoning · Comps
Scarsdale
In preparation
Parcels · Zoning · Comps
Dobbs Ferry
In preparation
Parcels · Zoning · Comps

Request access

ZoneIQ Pro is available to real estate professionals, investors, and municipal staff working in Westchester County. Submit your email and we will follow up directly.