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Property and parcel data forms the foundational layer of the real estate data stack. It describes the physical and legal characteristics of a land parcel or building: lot boundaries, building footprint, square footage, number of units, year built, construction type, and legal description. This data is sourced primarily from county assessors and GIS departments, then standardized by private aggregators. It is the starting point for virtually every downstream use case — from valuation and investment to insurance and urban planning.
41 of 41 sources shown
41 available sources
| Description | Data | Open | |||||||
|---|---|---|---|---|---|---|---|---|---|
location_on | Addresscloud US Property (usprop) is a dataset providing property information across the United States. | Addresscloud | Private | Property & Parcel Data | Property IdentificationAddress DetailsLegal Description+1 | Paid | API | View | |
location_on | Commercial API for US property, ownership, transaction and mortgage data. | ATTOM | Private | Property & Parcel Data | Property characteristicsOwnershipSalesJSON+3 | Free | API | View | |
location_on | ATTOM's Property Data API provides access to real estate datasets for over 158 million U.S. properties. It offers data on ownership, valuations, mortgage, demographics, and market trends. | ATTOM Data Solutions | Private | Property & Parcel Data | OwnershipValuationsMortgage+62 | Paid | — | View | |
location_on | Property data collection and reporting services for lenders, appraisers, and insurers with nationwide coverage and GSE data integration. | BEACON | Private | Property & Parcel Data | Property Condition ReportsFHA/HUD InspectionsDisaster Certs+2 | Paid | — | View | |
location_on | Pre-cleaned, monthly-updated bulk data of single-family residential properties delivered via AWS Data Exchange. | HouseCanary | Private | Property & Parcel Data | Property Data | Paid | — | View | |
calculate | California property tax assessment data from county assessors. | California County Assessors | Public | Property & Parcel Data | Assessed valueSupplemental taxExemptions+1 | Free | — | View | |
location_on | Property condition and risk data including roof condition, tree overhang, wildfire risk, and pool count via API and bulk delivery nationwide. | Cape Analytics | Private | Property & Parcel Data | property attributesrisk assessments | Paid | — | View | |
calculate | Property tax assessment data including actual values, assessment rates, and taxing entities for Colorado properties. | Colorado Department of Revenue | Public | Property & Parcel Data | Actual valueAssessment ratesTaxing entities+1 | Free | — | View | |
calculate | Official property assessment data for parcels in Cook County, Illinois. | Cook County Assessor's Office | Public | Property & Parcel Data | Assessed valueParcel detailsProperty classification+1 | Free | — | View | |
code | Enterprise property data API with comprehensive coverage. | CoreLogic | Private | Property & Parcel Data | AVMTax dataDeed records+3 | Paid | API | View | |
database | Provider of property, market, valuation and hazard data products. | Cotality | Private | Property & Parcel Data | Property recordsMarket dataTaxProduct dependent+2 | Paid | API | View | |
location_on | Parcel and property data with limited geographic coverage; services unavailable in all areas. | Datacomp | Private | Property & Parcel Data | Not specified | Paid | — | View | |
location_on | API providing interactive maps and unit-level property data visualization for multifamily and real estate projects nationwide. | Engrain | Private | Property & Parcel Data | property datamapping data | Paid | — | View | |
calculate | Assessment and property tax data from Florida county appraisers via online search interface. | Florida County Property Appraisers | Public | Property & Parcel Data | Assessed valueTaxable valueExemptions+1 | Free | — | View | |
location_on | Parcel-level zoning data and intelligence with 3D mapping and property research tools for municipal zoning management. | Gridics | Private | Property & Parcel Data | Parcel-level zoning dataGIS dataTransit data+1 | Paid | — | View | |
location_on | Real-time property data on home value, equity, and mortgage status for 98% of US homes via API and platform. | Chimney | Private | Property & Parcel Data | Home ValueEquityMortgage Status+3 | Paid | API | View | |
location_on | AI-analyzed off-market and MLS data with investment property search, reports, and APIs for 150M+ US residential properties. | Homesage.ai | Private | Property & Parcel Data | MLS listingsOff-market listingsProperty reports+1 | Paid | API | View | |
location_on | Data Center Due Diligence report with building, electrical infrastructure, and energy price node data for 5,300+ U.S. data centers. | LandGate | Private | Property & Parcel Data | Data Center InfrastructureElectrical InfrastructureEnergy Prices | Paid | — | View | |
location_on | Location-based parcel and property data with mapping tools for 1,000+ local governments via web platform. | SchneiderGIS | Private | Property & Parcel Data | Not specified | Paid | API | View | |
calculate | Official property assessment records for parcels in Los Angeles County. | Los Angeles County Office of the Assessor | Public | Property & Parcel Data | Assessed valueParcel detailsProperty characteristics+1 | Free | — | View | |
calculate | Official assessor records for taxable property in Maricopa County, Arizona. | Maricopa County Assessor | Public | Property & Parcel Data | Assessed valueParcel detailsProperty characteristics+1 | Free | — | View | |
calculate | Property tax, assessed values, tax class, exemptions, and parcel details for all New York City properties. | NYC Department of Finance | Public | Property & Parcel Data | Assessed valueTax classExemptions+1 | Free | — | View | |
location_on | This is an open data feature service providing parcel ownership information for the Town of West Springfield. | Town of West Springfield | Public | Property & Parcel Data | Parcel OwnershipFeature Service | Paid | — | View | |
location_on | Verified, standardized property and address data with pre-geocoded records linked to 200+ attributes and datasets including parcels, POIs, and demographics. | Precisely | Private | Property & Parcel Data | address dataproperty dataparcel data+7 | Paid | API | View | |
location_on | PropertyShark provides residential and commercial real estate data and tools for property research and analysis. | PropertyShark | Private | Property & Parcel Data | Property recordsOwnership dataForeclosure data+9 | Free | — | View |
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ATTOM Data
Comprehensive property characteristics, tax, deed, and mortgage data for 158M+ US properties.
Regrid
Standardized parcel boundaries and attributes for 155M+ parcels nationwide.
CoreLogic (Cotality)
Enterprise property data covering characteristics, ownership, and transaction history.
County assessors are the authoritative source but vary widely in data quality and access. Private aggregators like ATTOM and Regrid standardize these records into consistent, API-accessible formats.
The Assessor Parcel Number (APN) is the primary key for linking property datasets. Format varies by county — always normalize before joining datasets.