Property Boundary & Parcel Data
Buy and sell property boundary & parcel data data. Lot lines, easements, and parcel dimensions with coordinates. Title companies and proptech AI need precise parcel geometry data.
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Find Me This Data →Overview
What Is Property Boundary & Parcel Data?
Property boundary and parcel data defines the spatial and legal boundaries of individual plots of land, including lot lines, easements, and parcel dimensions with precise geographic coordinates. This data represents the boundaries of a plot of land or specific property and includes attributes such as unique parcel identifiers, FIPS codes, APN numbers, zoning information, lot size, land use classifications, and centroid latitude/longitude coordinates. Parcel data serves as the spatial backbone of real estate analytics, enabling accurate geospatial mapping and comparison across neighborhoods, developments, and municipalities. The data is essential for title companies, proptech platforms, real estate valuation systems, and insurers who require precise parcel geometry to support underwriting decisions, AI-powered valuations, and risk assessments.
Market Data
156M+
U.S. Parcel Boundaries Covered
Source: ATTOM
159M+
Properties with Tax Assessor Records
Source: ATTOM
158M+
Parcels with Geo Coordinates
Source: ATTOM
187M+
U.S. Building Footprint Polygons
Source: ATTOM
Who Uses This Data
What AI models do with it.do with it.
Title Companies & Legal
Verify property boundaries, easements, and legal descriptions for title searches and closing documents using precise parcel geometry and legal boundary definitions.
Insurance Underwriting
Assess risk profiles and pricing by identifying properties in high-risk areas such as flood zones, using parcel boundary data to support accurate underwriting decisions and premium calculations.
Real Estate Valuation & AI
Power AI-driven property valuation models by combining parcel data with AVM and MLS data to improve geospatial accuracy and enable granular neighborhood and development-level comparisons.
Urban Planning & Construction
Support land use analysis, zoning verification, lot size assessment, and development feasibility studies using comprehensive parcel boundaries and subdivision data.
What Can You Earn?
What it's worth.worth.
Standard Parcel Boundaries
Varies
Pricing available upon request from major providers; free sample previews typically offered.
API Access & Real-Time
Varies
Custom API pricing available through enterprise providers like ATTOM; tiered by volume and update frequency.
Bulk Geographic Formats
Varies
GIS and database-loadable formats offered; pricing depends on geographic coverage area and data format requirements.
What Buyers Expect
What makes it valuable.valuable.
Precise Geographic Coordinates
Centroid latitude/longitude, elevation data, and polygon boundaries with high spatial accuracy for reliable geospatial analysis and mapping.
Comprehensive Attribution
Unique parcel identifiers, FIPS codes, APN numbers, Census codes (state, county, tract, block), zoning classifications, lot size, and land use designations.
Data Standardization & Governance
Rigorous validation through enterprise data management processes including address standardization, multi-source data fusion, and consistent ATTOM ID matching.
Current & Historical Coverage
Full U.S. coverage with regular updates; interoperability with property attributes, building footprints, Census data, and address genealogy for comprehensive context.
Companies Active Here
Who's buying.buying.
Provides 158M+ parcels with geo coordinates, 159M+ tax assessor property records, 187M+ building footprints, and 35B+ historical public records for enterprise property data applications across real estate, insurance, and fintech.
Delivers parcel boundary polygons with comprehensive attribution including FIPS, APN, Census codes, and centroid coordinates; integrates with building footprints and Census Bureau data for enriched property analysis.
Aggregates parcel data characteristics including locational features (elevation, zoning, subdivision), structural features (construction, roof type, square footage), and financial attributes (assessed value, recent sale amount) for bulk data access.
Combines parcel data with AVM and MLS datasets for AI-powered property valuation solutions serving data analysts, fintech innovators, mortgage lenders, and insurers with unified, cleaned property intelligence.
FAQ
Common questions.questions.
What attributes are included in parcel boundary data?
Standard parcel data includes unique parcel identifiers, FIPS codes, APN numbers, Census codes (state, county, tract, block group, block), centroid latitude/longitude coordinates, elevation, property address, city, state, postal code, lot size, zoning classification, land use designation, and recent valuation/sale information.
How is parcel data used in insurance underwriting?
Insurers use parcel boundary data to assess property risk profiles by identifying properties in high-risk areas such as flood zones and other hazard-prone locations. This enables more accurate underwriting decisions and helps determine appropriate insurance premiums based on geographic risk factors.
Why is parcel data important for real estate AI and valuation?
Parcel data serves as the spatial backbone of real estate analytics, providing precise geospatial accuracy and enabling AI models to aggregate and compare properties across neighborhoods, developments, and municipalities. When combined with AVM and MLS data, it produces more accurate, granular property valuations and market intelligence.
What data quality standards do major parcel data providers follow?
Leading providers like ATTOM employ rigorous enterprise data management programs involving over 20 validation steps including property address standardization, owner name parsing, multi-source data fusion, and consistent ID matching to ensure data accuracy and consistency across their entire parcel database.
Sell yourproperty boundary & parceldata.
If your company generates property boundary & parcel data, AI companies are actively looking for it. We handle pricing, compliance, and buyer matching.
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