Parcel data API comparison: U.S. providers side by side

A parcel data API comparison of Korzy and 5 other providers of U.S. parcel and property data, on pricing, coverage, MCP access, owner data, site context and bulk delivery. Each provider’s column comes from its own public pages, checked 5 November 2026.

Get a Korzy API key Sources for each provider

Parcel data APIs side by side

Feature	Korzy	Regrid	ATTOM	LightBox	ReportAll	Isopleth
Pricing model	Monthly plans with credits; extra credits in packs	Self-serve monthly subscription with per-record pricing; enterprise licenses above 10,000 records a month¹	Monthly API plans; Premium priced on request⁶	Plans from pay-as-you-go to high-volume enterprise packages¹²	Usage-based pricing; no public price list¹⁸	Monthly plans priced in lookups, plus one-off top-ups²³
Published entry price	$49/month (Professional, 3,000 credits)	No price shown on the public pages we reviewed. Monthly plans include 2,000 parcel records and 200,000 tiles, then $0.10 (Standard) or $0.15 (Premium) per extra record¹²	Basic Property API from $500/month⁶	Not published; pricing through LightBox Sales¹²	Not published¹⁸	$19/month Starter (20,000 lookups); a matched parcel record costs 5 lookups²³
Free trial or free tier	No free trial	API sandbox, free for 30 days³	Free 30-day trial API key⁷	Free developer portal access to try the APIs¹³	Free 30-day API trial¹⁸	Free tier: 1,000 lookups a month, no card²³
Stated U.S. coverage	161M+ parcel records across every U.S. county	160M+ parcel records across the U.S. and Canada³	160+ million U.S. properties⁷	More than 155 million U.S. parcel records¹⁴	161.6 million parcels across 3,230 U.S. counties¹⁹	Parcels in 35 states plus DC; point fields for every U.S. coordinate²⁴²⁵
REST API	Yes, REST with an OpenAPI spec	Yes, REST³	Yes, REST (JSON and XML)⁷	Yes, REST¹³	Yes, with raster and vector map tiles¹⁸	Yes, REST and JSON²⁵
MCP server	Yes, hosted MCP server, with plugins for Claude Code and Codex	Yes, with the same API token; live records are billed per record like the API³⁴	Yes, the ATTOM MCP Server⁸	Early access program for selected customers and partners¹⁵	None found on the pages we reviewed¹⁸²⁰	Yes, on the same plans and limits as the REST API²³²⁵
Owner names	Where published, with include_owner=true at twice the credits	Yes: owner names, mailing addresses and deeded ownership³	Yes: ownership and mortgage information in Basic and Premium⁶	Yes: ownership in the Parcels API¹⁴	Yes: an owner name field in the standard API data dictionary²¹	Where the source publishes them and its terms and state law allow reuse²⁴
Infrastructure and site context	Water and sewer service, protected areas and cleanup sites, rail, ports and freight, data-center projects, power plants, regional energy, grid transfer capacity and terrain	Zoning, building footprints and matched addresses³	Schools, neighborhood and points of interest; environmental risk and natural hazards⁶⁹	Zoning, flood hazard zones and base flood elevations, and other environmental APIs¹⁶	Building footprints¹⁹	Flood zones, soils, terrain, wildfire, climate, the power grid and utilities²⁶
Bulk files and licensing	Not through the API (point and record lookups); dataset licensing and flat-file exports on Enterprise	Yes: bulk files in CSV, FileGDB, GeoJSON, GeoPackage, Shapefile, SQL and Parquet⁵	Yes: bulk property data licensing to host the datasets yourself¹⁰	Yes: bulk feeds, GIS feature services and Snowflake¹⁷	Yes: a downloadable National Parcel Layer and county or state downloads²⁰²²	None found on the pages we reviewed²³²⁶

The U.S. parcel and property data providers

Korzy: An API and MCP server for U.S. parcels with water and sewer, environmental, logistics, energy, data-center and terrain context at the same point. See the Korzy API overview and land data API use cases.
Regrid: Regrid offers U.S. and Canadian parcel data through a self-serve REST API, map tiles, an MCP server and bulk files.³⁴⁵ Korzy vs Regrid, in detail
ATTOM: ATTOM sells U.S. property data through a REST API, an MCP server and bulk licensing. Estated is now part of ATTOM.⁷⁸¹⁰¹¹ Korzy vs ATTOM (and Estated), in detail
LightBox: LightBox offers parcel, zoning, structure and environmental APIs through a developer portal, plus bulk feeds and an early-access MCP program.^13151617 Korzy vs LightBox, in detail
ReportAll: ReportAll USA offers a parcel API with raster and vector map tiles, a downloadable National Parcel Layer and county or state downloads.¹⁸²⁰²² Korzy vs ReportAll, in detail
Isopleth: Isopleth returns fields such as flood zones, soils, terrain and the power grid for any U.S. coordinate, plus parcel records in some states, over REST and MCP.²⁵²⁶ Korzy vs Isopleth, in detail

Choosing a parcel data API for the job

Start from the job. If you need nationwide parcel files to load into your own database, look at the providers that license bulk data. If you need answers about specific sites, with the utilities, environmental records, power and data-center projects around each one, Korzy returns them at a point with the same request pattern:

Sources for each provider

Each provider’s statements come from its own public pages, read on 5 November 2026. Korzy’s column links to Korzy’s plans and prices and API documentation.

Regrid

Regrid support, plan options, support.regrid.com/reference/plan-options, checked 5 November 2026.
Regrid support, Self Serve API Plans (v2025.9.23), support.regrid.com/changelog/self-serve-api-plans, checked 5 November 2026.
Regrid, Parcel API, regrid.com/api, checked 5 November 2026.
Regrid, MCP server, regrid.com/mcp, checked 5 November 2026.
Regrid, U.S. parcel data, regrid.com/global/us-parcels, checked 5 November 2026.

ATTOM

ATTOM, Property Data API pricing, www.attomdata.com/solutions/delivery/property-data-api/pricing/, checked 5 November 2026.
ATTOM, Property Data API, www.attomdata.com/solutions/delivery/property-data-api/, checked 5 November 2026.
ATTOM, MCP Server, www.attomdata.com/solutions/delivery/mcp-server/, checked 5 November 2026.
ATTOM, announcement of the Estated acquisition, www.attomdata.com/news/company-news/attom-company-announcement-10/, checked 5 November 2026.
ATTOM, Bulk data licensing, www.attomdata.com/solutions/delivery/bulk-data-licensing/, checked 5 November 2026.
Estated home page, estated.com/, checked 5 November 2026.

LightBox

LightBox developer portal, Production access, developer.lightboxre.com/production-access, checked 5 November 2026.
LightBox, LightBox APIs, www.lightboxre.com/data/lightbox-apis, checked 5 November 2026.
LightBox developer portal, Parcels API, developer.lightboxre.com/apis/parcels, checked 5 November 2026.
LightBox, LightBox MCP, www.lightboxre.com/data/lightbox-mcp, checked 5 November 2026.
LightBox developer portal, API catalog, developer.lightboxre.com/apis/catalog, checked 5 November 2026.
LightBox, Data access overview, www.lightboxre.com/data/data-access-overview, checked 5 November 2026.

ReportAll

ReportAll USA, ReportAll API, reportallusa.com/products/api, checked 5 November 2026.
ReportAll USA, Our parcel data, reportallusa.com/our-parcel-data, checked 5 November 2026.
ReportAll USA home page, reportallusa.com/, checked 5 November 2026.
ReportAll USA, API standard data dictionary, reportallusa.com/product-docs/api/api-standard-data-dictionary, checked 5 November 2026.
ReportAll USA, National Parcel Layer, reportallusa.com/products/national-parcel-layer, checked 5 November 2026.

Isopleth

Isopleth, API pricing, isopleth.dev/pricing/, checked 5 November 2026.
Isopleth docs, Parcels, isopleth.dev/docs/parcels, checked 5 November 2026.
Isopleth home page, isopleth.dev/, checked 5 November 2026.
Isopleth, About, isopleth.dev/about/, checked 5 November 2026.

Check coverage before you spend

Korzy’s catalogs and summaries are free on every plan, so an agent or script can see what exists in a county before it requests records.

Get a Korzy API key See Korzy pricing Parcel data by county