Parcel data for every property
Ownership, value, and land detail for more than 154 million parcels. Who owns a property, what it is worth, when it was built, and how big the lot is, all in one structured record.
The record behind every piece of land
A parcel is a single unit of land or property with a legal boundary and an owner. xMap holds structured records for more than 154 million parcels, each carrying the parcel ID, the owner and mailing address, the property type and year built, the lot size and building area, and the assessed total, land, and building value with the tax amount and tax year. It turns fragmented county assessor data into one clean, queryable dataset.
18 fields across four questions
Location and ID
Parcel ID, country, state, county, ZIP, and the site address that pins the parcel down.
Ownership
The owner of record, the mailing address, and when the property was acquired.
Property detail
Property type, year built, lot size in acres, and building area in square feet.
Value and tax
Assessed total, land, and building value, plus the tax amount and tax year.
Search, filter, and export the parcels you need
The live catalog lets you search by owner, address, or parcel ID, and filter by state, county, property type, value, year built, lot size, and building area. Preview the matches, then export a county, a metro, or a whole property type, delivered as a file, by API, or through Polygon AI.
What teams do with parcel data
Acquisition and comps
Find owners, compare assessed values, and source off-market opportunities at scale.
Land availability
Screen parcels by property type, lot size, and building area to shortlist viable sites.
Property risk and value
Ground underwriting in assessed value, age, and property characteristics.
Enrichment and models
Enrich listings and power valuation models with clean, national parcel attributes.
Feasibility
Use lot size, building area, and year built to assess solar, retrofit, and build potential.
Ownership and land use
Trace ownership and study land use and value across counties and states.
Fragmented records, made one
County assessor data is scattered across thousands of jurisdictions in different formats. xMap standardises it into a single national dataset with consistent fields, so a query that works in one county works everywhere.
National and consistent
One schema across counties and states, so analysis lines up nationwide.
Ownership and value together
Owner, assessed value, and property detail in the same record.
Links to POI and traffic
Join parcels to xMap POI, footfall, and traffic data for a full picture of a location.
Flexible delivery
Catalog export, API, and plain-language querying with Polygon AI.
Parcel data, answered
What is parcel data?
Parcel data describes individual units of land or property, each with a legal boundary and an owner. xMap's records cover the parcel ID, ownership, property type and characteristics, and the assessed value and tax for more than 154 million parcels.
What fields come with each parcel?
Each parcel includes location and ID (parcel ID, state, county, ZIP, site address), ownership (owner, mailing address, acquired date), property detail (property type, year built, lot size, building area), and valuation (total, land, and building value, tax amount, tax year).
How many parcels are covered, and where?
The catalog holds more than 154 million parcels across the United States, standardised into a single national dataset.
Where does parcel data come from?
It is built from public county assessor and property records, then cleaned and standardised into one consistent schema so the same fields are available across jurisdictions.
Can I filter by value, size, or property type?
Yes. Filter by state, county, property type, total value, year built, lot size, and building area, then export only the parcels that match.
How is the data delivered?
Preview in the catalog, then export the exact selection as a file, pull it by API, or query it in plain language through Polygon AI.
Know every property in depth
Explore the live parcel catalog, or tell us the counties, property types, and fields you need.