ATTOM provides the most extensive US parcel boundary data for more than 158 million properties nationwide. This is infused with ATTOM's proprietary database to provide a comprehensive look at the boundaries and specific attributes of such properties.

Open Regrid's Parcel Tile Layer As Esri’s commercial partner for parcel data, Regrid invites you to enjoy this free tile layer of parcel boundaries covering 100% of the United States. Complete parcel attributes are also available from an integrated Data Store. "I think it’s fantastic that this layer exists. It's really helpful for my staff to see parcel boundaries in a quick and accessible layer."- Kate Berg, GIS Manager | Department of Environment, Great Lakes, and Energy Hassle-free parcel data for Esri Users When you click a parcel in the tile layer, you will see its address, size, and parcel ID number, along with a convenient link to purchase additional parcel attributes in the Regrid Data Store for the ArcGIS User Community. Once in the Data Store, you can purchase and download parcel files with attributes by the county and state for use in ArcGIS, as well as our add-on datasets like standardized zoning, matched building footprints, and matched secondary addresses. Key features of Regrid's parcel dataSourced and standardized: Data combines authoritative public sources & third-party enrichments, aggregated, standardized, and matched by the Regrid team.158+ million parcel records: Covering all 3,200+ US counties and territories.143+ standardized data fields: Including geometry, ownership, buildings, secondary addresses, land use, and zoning.Universal parcel ID and placekey location identifier: Ensuring precise identification and integration.Detailed attributes: Tax assessments, building counts, square footage, stacked parcels (condos), right-of-way, vacancy indicators and USPS deliverability. Comprehensive coverage: 100% land parcel coverage across the US. Visit Regrid.com/Esri to browse our portfolio of parcel products for the Esri ecosystem, including Feature Service delivery for ongoing parcel updates at scale. Explore all Regrid's offerings for Esri customers Parcel data resources and documentationRegrid data dictionary and parcel data schemaRegrid coverage reportParcel data FAQs Thank you to all the GIS professionals, state, county and federal officials, assessors, recorders, and public officials across the country who maintain the nation's parcel data and infrastructure.

The LandRecords.us National Parcel Dataset is a comprehensive, standardized geospatial dataset aggregating ~155M parcel boundaries and associated land ownership and taxation attributes from various local jurisdictions across the United States. This document outlines the detailed description and technical specifications for this dataset.

The dataset consists of geometric features representing parcel boundaries and a set of attributes that describe each parcel. Polygons representing the boundaries of individual land parcels for purposes of tax assessment for the jurisdiction in which they reside. These geometries are derived from digitized cadastral maps, surveys, recorded deeds, and legal descriptions of the parcel.

ATTOM’s Parcel Boundaries dataset delivers a comprehensive, nationwide view of land ownership geography, providing the most extensive and current set of standardized parcel boundaries across the U.S. and U.S. territories.

Maintained by county GIS offices and updated as parcels are split, combined, or modified, these boundaries are collected and normalized by ATTOM into a seamless national parcel fabric. This foundational spatial layer supports accurate land identification and parcel-level analysis across jurisdictions.

When combined with standardized property characteristics, land use, assessed values, ownership, and historical sale data, Parcel Boundaries enable a complete, parcel-level understanding of real estate assets for planning, analysis, and development use cases.

Key capabilities include: - Over 156M parcel boundaries covering more than 99% of the U.S. population - Quarterly updates with most counties refreshed at least annually - Average parcel data age of approximately 180 days - Cleansed and standardized boundaries delivered in a single projection - Persistent unique parcel identifiers across releases - Seamless linkage to Assessor, Recorder, Foreclosure, AVM, Building Permit, MLS, and other ATTOM property datasets

This dataset includes one file for each of the 51 counties that were collected, as well as a CA_Merged file with the parcels merged into a single file.Note – this data does not include attributes beyond the parcel ID number (PARNO) – that will be provided when available, most likely by the state of California.DownloadA 1.6 GB zipped file geodatabase is available for download - click here.DescriptionA geodatabase with parcel boundaries for 51 (out of 58) counties in the State of California. The original target was to collect data for the close of the 2013 fiscal year. As the collection progressed, it became clear that holding to that time standard was not practical. Out of expediency, the date requirement was relaxed, and the currently available dataset was collected for a majority of the counties. Most of these were distributed with minimal metadata.The table “ParcelInfo” includes the data that the data came into our possession, and our best estimate of the last time the parcel dataset was updated by the original source. Data sets listed as “Downloaded from” were downloaded from a publicly accessible web or FTP site from the county. Other data sets were provided directly to us by the county, though many of them may also be available for direct download. Â These data have been reprojected to California Albers NAD84, but have not been checked for topology, or aligned to county boundaries in any way. Tulare County’s dataset arrived with an undefined projection and was identified as being California State Plane NAD83 (US Feet) and was assigned by ICE as that projection prior to reprojection. Kings County’s dataset was delivered as individual shapefiles for each of the 50 assessor’s books maintained at the county. These were merged to a single feature class prior to importing to the database.The attribute tables were standardized and truncated to include only a PARNO (APN). The format of these fields has been left identical to the original dataset. The Data Interoperablity Extension ETL tool used in this process is included in the zip file. Where provided by the original data sources, metadata for the original data has been maintained. Please note that the attribute table structure changes were made at ICE, UC Davis, not at the original data sources.Parcel Source InformationCountyDateCollecDateCurrenNotesAlameda4/8/20142/13/2014Download from Alamenda CountyAlpine4/22/20141/26/2012Alpine County PlanningAmador5/21/20145/14/2014Amador County Transportation CommissionButte2/24/20141/6/2014Butte County Association of GovernmentsCalaveras5/13/2014Download from Calaveras County, exact date unknown, labelled 2013Contra Costa4/4/20144/4/2014Contra Costa Assessor’s OfficeDel Norte5/13/20145/8/2014Download from Del Norte CountyEl Dorado4/4/20144/3/2014El Dorado County AssessorFresno4/4/20144/4/2014Fresno County AssessorGlenn4/4/201410/13/2013Glenn County Public WorksHumboldt6/3/20144/25/2014Humbodt County AssessorImperial8/4/20147/18/2014Imperial County AssessorKern3/26/20143/16/2014Kern County AssessorKings4/21/20144/14/2014Kings CountyLake7/15/20147/19/2013Lake CountyLassen7/24/20147/24/2014Lassen CountyLos Angeles10/22/201410/9/2014Los Angeles CountyMadera7/28/2014Madera County, Date Current unclear likely 7/2014Marin5/13/20145/1/2014Marin County AssessorMendocino4/21/20143/27/2014Mendocino CountyMerced7/15/20141/16/2014Merced CountyMono4/7/20144/7/2014Mono CountyMonterey5/13/201410/31/2013Download from Monterey CountyNapa4/22/20144/22/2014Napa CountyNevada10/29/201410/26/2014Download from Nevada CountyOrange3/18/20143/18/2014Download from Orange CountyPlacer7/2/20147/2/2014Placer CountyRiverside3/17/20141/6/2014Download from Riverside CountySacramento4/2/20143/12/2014Sacramento CountySan Benito5/12/20144/30/2014San Benito CountySan Bernardino2/12/20142/12/2014Download from San Bernardino CountySan Diego4/18/20144/18/2014San Diego CountySan Francisco5/23/20145/23/2014Download from San Francisco CountySan Joaquin10/13/20147/1/2013San Joaquin County Fiscal year close dataSan Mateo2/12/20142/12/2014San Mateo CountySanta Barbara4/22/20149/17/2013Santa Barbara CountySanta Clara9/5/20143/24/2014Santa Clara County, Required a PRA requestSanta Cruz2/13/201411/13/2014Download from Santa Cruz CountyShasta4/23/20141/6/2014Download from Shasta CountySierra7/15/20141/20/2014Sierra CountySolano4/24/2014Download from Solano Couty, Boundaries appear to be from 2013Sonoma5/19/20144/3/2014Download from Sonoma CountyStanislaus4/23/20141/22/2014Download from Stanislaus CountySutter11/5/201410/14/2014Download from Sutter CountyTehama1/16/201512/9/2014Tehama CountyTrinity12/8/20141/20/2010Download from Trinity County, Note age of data 2010Tulare7/1/20146/24/2014Tulare CountyTuolumne5/13/201410/9/2013Download from Tuolumne CountyVentura11/4/20146/18/2014Download from Ventura CountyYolo11/4/20149/10/2014Download from Yolo CountyYuba11/12/201412/17/2013Download from Yuba County

ATTOM’s Parcel Boundaries dataset delivers a comprehensive, nationwide foundation for Urban Planning Data by defining the precise geographic extent of land ownership across the United States and U.S. territories.

Parcel boundaries are maintained by county GIS offices and reflect real-world changes as properties are split, combined, or modified. ATTOM collects, cleanses, and standardizes these records into a seamless national fabric, enabling consistent Parcel Data, Construction Data, and Residential Real Estate Data analysis across jurisdictions.

When combined with related property characteristics, land use, valuation, ownership, and transaction data, parcel boundaries provide essential spatial context for property intelligence and planning workflows.

What the Dataset Includes - Parcel boundary polygons defining land ownership extent - County-maintained GIS boundaries standardized nationally - Persistent unique parcel identifiers across releases - Boundaries aligned for use across bulk and API delivery - Linkage-ready structure for assessor, recorder, foreclosure, AVM, building permit, MLS, and related datasets

ATTOM’s Parcel Boundaries dataset delivers a comprehensive, nationwide view of Property Data, defining the precise geographic extent of land ownership across the United States and its territories. Sourced from public record GIS offices, these Parcel Boundaries reflect how properties are split, combined, and modified over time, providing a foundational spatial layer for Parcel Data, Urban Planning Data, Construction Data, and Residential Real Estate Data use cases.

ATTOM aggregates, cleanses, and standardizes parcel geometry and identifiers from 3,144 counties into a seamless national fabric. By unifying boundary definitions and projections, the dataset enables consistent parcel-level analysis across jurisdictions and simplifies integration with other property intelligence layers.

What the Dataset Includes - Parcel boundary polygons defining land ownership extents - Standardized parcel identifiers with persistent unique IDs - Nationwide parcel fabric aligned across jurisdictions - Geometry standardized into a single projection for ease of use

Coverage - 156M+ parcel boundaries - 3,144 counties - Over 99% of the U.S. population, including U.S. territories

Data Freshness - Most counties updated at least annually - Average parcel data age of approximately 180 days - Roughly 95% of parcels updated within the last year - Quarterly release cadence

Why It Matters - Provides a consistent spatial foundation for Property Data analysis - Supports Urban Planning and Construction workflows requiring accurate land boundaries - Enables parcel-level Residential Real Estate Data analysis at scale - Simplifies cross-county comparisons through standardized geometry and IDs

Data Integration - Unified product design enables traversal across delivery platforms - Additional property context available via linkage to Assessor, Recorder, Foreclosure, AVM, Building Permit, and other ATTOM property datasets

ATTOM’s Parcel Boundaries dataset serves as a core geospatial layer for organizations requiring accurate, current, and standardized land ownership boundaries to power planning, development, analysis, and property intelligence nationwide.

This dataset contains parcel boundaries attributed with county block and lot number. Use the Property Information Extractor for more control downloading a filtered parcel dataset.

If viewing this description on the Western Pennsylvania Regional Data Center’s open data portal (http://www.wprdc.org), this dataset is harvested on a weekly basis from Allegheny County’s GIS data portal (http://openac.alcogis.opendata.arcgis.com/). The full metadata record for this dataset can also be found on Allegheny County’s GIS portal. You can access the metadata record and other resources on the GIS portal by clicking on the “Explore” button (and choosing the “Go to resource” option) to the right of the “ArcGIS Open Dataset” text below.

Category: Civic Vitality and Governance

Organization: Allegheny County

Department: Department of Real Estate

Temporal Coverage: updated daily on Allegheny County's GIS Open Data page

Data Notes:

Coordinate System: Pennsylvania State Plane South Zone 3702; U.S. Survey Foot

Development Notes: none

Other: none

Related Document(s): Data Dictionary (none)

Frequency - Data Change: Multiple times per hour

Frequency - Publishing: Daily

Data Steward Name: Eli Thomas

Data Steward Email: gishelp@alleghenycounty.us

An area depicting ownership parcels of the surface estate. Each surface ownership parcel is tied to a particular legal transaction. The same individual or organization may currently own many parcels that may or may not have been acquired through the same legal transaction. Therefore, they are captured as separate entities rather than merged together. This is in contrast to Basic Ownership, in which the surface ownership parcels having the same owner are merged together. Basic Ownership provides the general user with the Forest Service versus non-Forest Service view of land ownership within National Forest boundaries. Surface Ownership provides the land status user with a current snapshot of ownership within National Forest boundaries. MetadataThis record was taken from the USDA Enterprise Data Inventory that feeds into the https://data.gov catalog. Data for this record includes the following resources: ISO-19139 metadata ArcGIS Hub Dataset ArcGIS GeoService CSV Shapefile GeoJSON KML For complete information, please visit https://data.gov.

Parcels are units of land that identify property boundaries and are useful for basemap creation and for land management. Traditionally, parcel mapping has been done using highly accurate surveying techniques, but this can be expensive and time consuming. High resolution imagery is increasingly being used for plot delineation, and the use of deep leaning models can automate and speed up the process.Residential parcels are often associated with visible boundaries, but since legally valid parcels can be defined without a clearly demarcated boundary, this model only deduces their plausible approximations. This model can be used to create basemaps, which can be further refined by manual editing.Using the modelFollow the guide to use the model. Before using this model, ensure that the supported deep learning libraries are installed. For more details, check Deep Learning Libraries Installer for ArcGIS.Fine-tuning the modelThis model can be fine-tuned using the Train Deep Learning Model tool. Follow the guide to fine-tune this model.Input3-band high-resolution (40–50 cm) imagery.OutputFeature layer with the number of classes as count of people.Applicable geographiesThe model is expected to work well in the United States. It works well in areas with high urban density and low vegetation.Model architectureThe model uses the BDCNEdgeDetector model architecture implemented using ArcGIS API for Python.Accuracy metricsThe model has an accuracy of 73.2 percent when classifying pixels belonging to edges.Training dataThis model has been trained on an Esri proprietary parcel extraction dataset.Sample resultsHere are a few results from the model. To view more, see this story.

Detailed information on individual parcels within Cumberland County, NC, including the City of Fayetteville, the Town of Hope Mills, the Town of Spring Lake, the Town of Eastover, the Town of Falcon, the Town of Godwin, the Town of Linden, the Town of Stedman, and the Town of Wade. Attributes include:Parcel REID (PIN Number): A unique identifier assigned to each parcel for tax purposes.Owner Information: Name and contact details of the property owner(s).Parcel Boundaries: Geospatial data defining the exact boundaries of each parcel.Assessed Value: The assessed value of the land and any improvements for property tax purposes.Land Use: Current land use classification (e.g., residential, commercial, agricultural).Size: Area of the parcel in square feet or acres.Zoning: Zoning classification and any applicable zoning restrictions.Legal Descriptions: Detailed legal description of the parcel boundaries and location.This layer is crucial for tax assessors, urban planners, developers, and other stakeholders who require accurate and up-to-date parcel information for decision-making and operational purposes. It supports a wide range of applications, including property tax assessments, land use planning, infrastructure development, and real estate transactions.More information at https://cumberlandgis.maps.arcgis.com/apps/webappviewer/index.html?id=a6ea68995c2349e9a177366288589be7

The Florida Department of Revenue’s Property Tax Oversight(PTO) program collects parcel level Geographic Information System (GIS) data files every April from all of Florida’s 67 county property appraisers’ offices. This GIS data was exported from these file submissions in August 2025. The GIS parcel polygon features have been joined with thereal property roll (Name – Address – Legal, or NAL)file. No line work was adjusted between county boundaries.The polygon data set represents the information property appraisers gathered from the legal description on deeds, lot layout of recorded plats, declaration of condominium documents, recorded and unrecorded surveys.Individual parcel data is updated continually by each county property appraiser as needed. The GIS linework and related attributions for the statewide parcel map are updated annually by the Department every August. Minor data maintenance is also completed every May and November. The dataset extends countywide and is attribute by Federal Information Processing Standards (FIPS) code.DOR reference with FIPS county codes and attribution definitions - https://fgio.maps.arcgis.com/home/item.html?id=55e830fd6c8948baae1601fbfc33a3b2If you discover the inadvertent release of a confidential record exempt from disclosure pursuant to Chapter 119, Florida Statutes, public records laws, immediately notify the Department of Revenue at 850-717-6570 and your local Florida Property Appraisers’ Office. Please contact the county property appraiser with any parcel specific questions: Florida Property Appraisers’ Offices:Alachua County Property Appraiser – https://www.acpafl.org/Baker County Property Appraiser – https://www.bakerpa.com/Bay County Property Appraiser – https://baypa.net/Bradford County Property Appraiser – https://www.bradfordappraiser.com/Brevard County Property Appraiser – https://www.bcpao.us/Broward County Property Appraiser – https://bcpa.net/Calhoun County Property Appraiser – https://calhounpa.net/Charlotte County Property Appraiser – https://www.ccappraiser.com/Citrus County Property Appraiser – https://www.citruspa.org/Clay County Property Appraiser – https://ccpao.com/Collier County Property Appraiser – https://www.collierappraiser.com/Columbia County Property Appraiser – https://columbia.floridapa.com/DeSoto County Property Appraiser – https://www.desotopa.com/Dixie County Property Appraiser – https://www.qpublic.net/fl/dixie/Duval County Property Appraiser – https://www.coj.net/departments/property-appraiser.aspxEscambia County Property Appraiser – https://www.escpa.org/Flagler County Property Appraiser – https://flaglerpa.com/Franklin County Property Appraiser – https://franklincountypa.net/Gadsden County Property Appraiser – https://gadsdenpa.com/Gilchrist County Property Appraiser – https://www.qpublic.net/fl/gilchrist/Glades County Property Appraiser – https://qpublic.net/fl/glades/Gulf County Property Appraiser – https://gulfpa.com/Hamilton County Property Appraiser – https://hamiltonpa.com/Hardee County Property Appraiser – https://hardeepa.com/Hendry County Property Appraiser – https://hendryprop.com/Hernando County Property Appraiser – https://hernandocountypa-florida.us/Highlands County Property Appraiser – https://www.hcpao.org/Hillsborough County Property Appraiser – https://www.hcpafl.org/Holmes County Property Appraiser – https://www.qpublic.net/fl/holmes/Indian River County Property Appraiser – https://www.ircpa.org/Jackson County Property Appraiser – https://www.qpublic.net/fl/jackson/Jefferson County Property Appraiser – https://jeffersonpa.net/Lafayette County Property Appraiser – https://www.lafayettepa.com/Lake County Property Appraiser – https://www.lakecopropappr.com/Lee County Property Appraiser – https://www.leepa.org/Leon County Property Appraiser – https://www.leonpa.gov/Levy County Property Appraiser – https://www.qpublic.net/fl/levy/Liberty County Property Appraiser – https://libertypa.org/Madison County Property Appraiser – https://madisonpa.com/Manatee County Property Appraiser – https://www.manateepao.gov/Marion County Property Appraiser – https://www.pa.marion.fl.us/Martin County Property Appraiser – https://www.pa.martin.fl.us/Miami-Dade County Property Appraiser – https://www.miamidade.gov/pa/Monroe County Property Appraiser – https://mcpafl.org/Nassau County Property Appraiser – https://ncpafl.com/Okaloosa County Property Appraiser – https://okaloosapa.com/Okeechobee County Property Appraiser – https://www.okeechobeepa.com/Orange County Property Appraiser – https://ocpaweb.ocpafl.org/Osceola County Property Appraiser – https://www.property-appraiser.org/Palm Beach County Property Appraiser – https://www.pbcgov.org/papa/index.htmPasco County Property Appraiser – https://pascopa.com/Pinellas County Property Appraiser – https://www.pcpao.org/Polk County Property Appraiser – https://www.polkpa.org/Putnam County Property Appraiser – https://pa.putnam-fl.com/Santa Rosa County Property Appraiser – https://srcpa.gov/Sarasota County Property Appraiser – https://www.sc-pa.com/Seminole County Property Appraiser – https://www.scpafl.org/St. Johns County Property Appraiser – https://www.sjcpa.gov/St. Lucie County Property Appraiser – https://www.paslc.gov/Sumter County Property Appraiser – https://www.sumterpa.com/Suwannee County Property Appraiser – https://suwannee.floridapa.com/Taylor County Property Appraiser – https://qpublic.net/fl/taylor/Union County Property Appraiser – https://union.floridapa.com/Volusia County Property Appraiser – https://vcpa.vcgov.org/Wakulla County Property Appraiser – https://mywakullapa.com/Walton County Property Appraiser – https://waltonpa.com/Washington County Property Appraiser – https://www.qpublic.net/fl/washington/Florida Department of Revenue Property Tax Oversight https://floridarevenue.com/property/Pages/Home.aspx

This map was created in order to display public parcel data at small and large scales. The spatial point data is aggregated by the State of Colorado Governor's Office of Information Technology Geospatial Information Systems Team.

This dataset is a compilation of county parcel data from Minnesota counties that have opted-in for their parcel data to be included in this dataset.

It includes the following 59 counties that have opted-in as of the publication date of this dataset: Aitkin County, Anoka County, Becker County, Benton County, Big Stone County, Carlton County, Carver County, Cass County, Chippewa County, Chisago County, Clay County, Clearwater County, Cook County, Crow Wing County, Dakota County, Douglas County, Fillmore County, Grant County, Hennepin County, Houston County, Isanti County, Itasca County, Jackson County, Koochiching County, Lac qui Parle County, Lake County, Lake of the Woods County, Lyon County, Marshall County, McLeod County, Mille Lacs County, Morrison County, Mower County, Murray County, Norman County, Olmsted County, Otter Tail County, Pennington County, Pipestone County, Polk County, Pope County, Ramsey County, Red Lake County, Renville County, Rice County, Scott County, Sherburne County, St. Louis County, Stearns County, Steele County, Stevens County, Traverse County, Wabasha County, Waseca County, Washington County, Wilkin County, Winona County, Wright County, and Yellow Medicine County.

If you represent a county not included in this dataset and would like to opt-in, please contact Heather Albrecht (Heather.Albrecht@hennepin.us), co-chair of the Minnesota Geospatial Advisory Council (GAC)’s Parcels and Land Records Committee's Open Data Subcommittee. County parcel data does not need to be in the GAC parcel data standard to be included. MnGeo will map the county fields to the GAC standard.

County parcel data records have been assembled into a single dataset with a common coordinate system (UTM Zone 15) and common attribute schema. The county parcel data attributes have been mapped to the GAC parcel data standard for Minnesota: https://www.mngeo.state.mn.us/committee/standards/parcel_attrib/parcel_attrib.html

This compiled parcel dataset was created using Python code developed by Minnesota state agency GIS professionals, and represents a best effort to map individual county source file attributes into the common attribute schema of the GAC parcel data standard. The attributes from counties are mapped to the most appropriate destination column. In some cases, the county source files included attributes that were not mapped to the GAC standard. Additionally, some county attribute fields were parsed and mapped to multiple GAC standard fields, such as a single line address. Each quarter, MnGeo provides a text file to counties that shows how county fields are mapped to the GAC standard. Additionally, this text file shows the fields that are not mapped to the standard and those that are parsed. If a county shares changes to how their data should be mapped, MnGeo updates the compilation. If you represent a county and would like to update how MnGeo is mapping your county attribute fields to this compiled dataset, please contact us.

This dataset is a snapshot of parcel data, and the source date of the county data may vary. Users should consult County websites to see the most up-to-date and complete parcel data.

There have been recent changes in date/time fields, and their processing, introduced by our software vendor. In some cases, this has resulted in date fields being empty. We are aware of the issue and are working to correct it for future parcel data releases.

The State of Minnesota makes no representation or warranties, express or implied, with respect to the use or reuse of data provided herewith, regardless of its format or the means of its transmission. THE DATA IS PROVIDED “AS IS” WITH NO GUARANTEE OR REPRESENTATION ABOUT THE ACCURACY, CURRENCY, SUITABILITY, PERFORMANCE, MECHANTABILITY, RELIABILITY OR FITINESS OF THIS DATA FOR ANY PARTICULAR PURPOSE. This dataset is NOT suitable for accurate boundary determination. Contact a licensed land surveyor if you have questions about boundary determinations.

DOWNLOAD NOTES: This dataset is only provided in Esri File Geodatabase and OGC GeoPackage formats. A shapefile is not available because the size of the dataset exceeds the limit for that format. The distribution version of the fgdb is compressed to help reduce the data footprint. QGIS users should consider using the Geopackage format for better results.

ATTOM Building Footprints provides a comprehensive nationwide dataset of polygon geometries that define the ground-level perimeter of buildings across the United States and U.S. territories. This Parcel Data product captures building shape, size, location, and spatial relationships to surrounding structures and geographic features, enabling advanced mapping and geospatial analytics.

The dataset is generated using proprietary AI computer vision models applied to aerial imagery and LiDAR data. Buildings are detected, converted to vector format, regularized, and split along parcel boundaries to ensure accurate representation at the individual structure level. Additional refinement is performed through morphological filtering and rule-based modeling, including specialized algorithms for separating contiguous rooftops in dense urban environments.

Building Footprints are geospatially matched to the parcel boundary in which the majority of the structure resides, supporting seamless integration with other ATTOM Property Data products. The dataset includes both primary structures and smaller auxiliary buildings, such as pool houses, and is continuously refreshed through quarterly parcel rematching and semiannual additions of newly detected buildings.

Optional enhancements include Building Footprints 3D attributes derived from LiDAR, as well as address point add-ons, enabling expanded analysis for construction, planning, insurance, and property intelligence applications.

What is Land Parcel Data?

Land parcel data refers to a collection of spatially referenced information about individual land parcels or lots within a specified area. It includes attributes such as parcel ID, owner information, legal descriptions, acreage, zoning classifications, tax assessments, and geographic coordinates. This data is typically sourced from government agencies, cadastral surveys, and private entities, then compiled and organized into a structured dataset suitable for analysis and visualization.

Land Parcel Data Details:

• 157 Million nationwide parcel records and geometries
• Approximately 100 attributes (standard schema)
• Tax assessment fields
• Universal parcel ID
• Monthly rolling updates
• Standardized land use codes
• USPS validated address data with residential property & vacancy indicators
• Building counts & footprint square footage attributes
• Right-of-way (ROW) parcel indicator
• Placekey - Location identifier
• Flood zones and school districts
• Homesteads exemption
  • Crop data layer fields
  • Public access status

This file geodatabase contains parcel data including plat boundaries, tax parcels, easements and road right of ways. Attributed Parcel Point and Polygon data represent property descriptions (legal descriptions) and land ownership in Ramsey County joined to tax parcels.

The following links can be used to obtain individual metadata pages:

Attributed Parcel Point: plan_attributedparcelpoint.html
Attributed Parcel Poly: plan_attributedparcelpoly.html
Common Interest: plan_commoninterest.html
Subdivision: plan_subdivision.html
Tax Parcels: plan_taxparcel.html
Manufactured Home: plan_manufacturedhome.html
Personal Property: plan_personalproperty.html
Real Property: plan_realproperty.html
State Assessed Property: plan_stateassessedproperty.html
Conveyance Division: plan_conveyancedivision.html
Special Survey: plan_specialsurvey.html
Parcel Info: plan_parcelinfo.html
Easement: plan_easement.html
Landtie: plan_landtie.html
Right of Way: plan_rightofway.html
Historic Right of Way: plan_historicrightofway.html

Data Dictionary:Attribute LabelDefinitionSourceTAX_IDUnique 26 character property tax identification numberOnondaga County PlanningPRINTKEYAbbreviated tax identification number (section-block-lot)Onondaga County PlanningADDRESSNUMProperty’s physical street addressOnondaga County PlanningADDRESSNAMProperty’s physical street nameOnondaga County PlanningTAX_ID_1City Tax ID number (26 digit number used for parcel mapping)City of Syracuse - AssessmentSBLProperty Tax Map Number (Section, Block, Lot)City of Syracuse - AssessmentPNUMBRProperty Number (10 digit number)City of Syracuse - AssessmentStNumParcel street numberCity of Syracuse - AssessmentStNameParcel street nameCity of Syracuse - AssessmentFullAddressStreet number and street nameCity of Syracuse - AssessmentZipParcel zip codeCity of Syracuse - Assessmentdesc_1, desc_2, desc_3Lot description including dimensionsCity of Syracuse - AssessmentLUC_parcelNew York State property type classification code assigned by assessor during each roll categorizing the property by use. For more details: https://www.tax.ny.gov/research/property/assess/manuals/prclas.htmCity of Syracuse - AssessmentLU_parcelNew York State property type classification nameCity of Syracuse - AssessmentLUCat_OldLegacy land use category that corresponds to the overarching NYS category, i.e. all 400s = commercial, all 300s = vacant land, etc.NAland_avLand assessed valueCity of Syracuse - Assessmenttotal_avFull assessed valueCity of Syracuse - AssessmentOwnerProperty owner name (First, Initial, Last, Suffix)City of Syracuse - AssessmentAdd1_OwnPOBoxProperty owner mailing address (PO Box)City of Syracuse - AssessmentAdd2_OwnStAddProperty owner mailing address (street number, street name, street direction)City of Syracuse - AssessmentAdd3_OwnUnitInfoProperty owner mailing address unit info (unit name, unit number)City of Syracuse - AssessmentAdd4_OwnCityStateZipProperty owner mailing address (city, state or country, zip code)City of Syracuse - AssessmentFRONTFront footage for square or rectangular shaped lots and the effective front feet on irregularly shaped lots in feetCity of Syracuse - AssessmentDEPTHActual depth of rectangular shaped lots in feet (irregular lots are usually measured in acres or square feet)City of Syracuse - AssessmentACRESNumber of acres (where values were 0, acreage calculated as FRONT*DEPTH)/43560)City of Syracuse - Assessmentyr_builtYear built. Where year built was "0" or null, effective year built is given. (Effective age is determined by comparing the physical condition of one building with that of other like-use, newer buildings. Effective age may or may not represent the actual year built; if there have been constant upgrades or excellent maintenance this may be more recent than the original year built.)City of Syracuse - Assessmentn_ResUnitsNumber of residential unitsNA - Calculated fieldIPSVacantIs it a vacant structure? ("Commercial" or "Residential" = Yes; null = No)City of Syracuse - Division of Code EnforcementIPS_ConditionProperty Condition Score assigned to vacant properties by housing inspectors during routine vacant inspections (1 = Worst; 5 = Best)City of Syracuse - Division of Code EnforcementNREligibleNational Register of Historic Places Eligible ("NR Eligible (SHPO)," or "NR Listed")City of Syracuse - Neighborhood and Business DevelopmentLPSSLocally Protected Site Status ("Eligible/Architecturally Significant" or "Local Protected Site or Local District")City of Syracuse - Neighborhood and Business DevelopmentWTR_ACTIVEWater activity code ("I" = Inactive; "A" = Active)City of Syracuse - WaterRNIIs property located in Resurgent Neighborhood Initiative (RNI) Area? (1 = Yes; 0 = No)City of Syracuse - Neighborhood and Business DevelopmentDPW_QuadGeographic quadrant property is located in. Quadrants are divided Northwest, Northeast, Southwest, and Southeast based on property location in relation to I-81 and I-690. DPW uses the quad designation for some types of staff assignments.City of Syracuse - Department of Public WorksTNT_NAMETNT Sector property is located inCity of Syracuse - Neighborhood and Business DevelopmentNHOODCity NeighborhoodSyracuse-Onondaga County Planning Agency (SOCPA)NRSAIs property located in Neighborhood Revitalization Strategy Area (NRSA)? (1 = Yes; 0 = No)City of Syracuse - Neighborhood and Business DevelopmentDOCE_Insp1Geographic boundary use to assign Division of Code Enforcement cases for housing inspectorsCity of Syracuse - Neighborhood and Business DevelopmentDOCE_Insp2Geographic boundary use to assign Division of Code Enforcement cases for building inspectorsCity of Syracuse - Neighborhood and Business DevelopmentDOCE_PermitGeographic boundary use to assign Division of Code Enforcement cases for permit inspectorsCity of Syracuse - Neighborhood and Business DevelopmentDOCE_CommGeographic boundary use to assign Division of Code Enforcement cases for commerical and electrical inspectorsCity of Syracuse - Neighborhood and Business DevelopmentFIRE_DISTFire engine districtsCity of Syracuse - Fire DepartmentREZONEReZone designation (adopted June 2023)City of Syracuse - Neighborhood and Business DevelopmentZONE_DIST_PREVFormer zoning district codeSyracuse-Onondaga County Planning Agency (SOCPA)CC_DISTCurrent Common Council District property is located inOnondaga County Board of ElectionsCTID_2020Census Tract ID (2020)U.S. Census BureauCTLAB_2020Census Tract Label (2020)U.S. Census BureauCT_2020Census Tract (2020)U.S. Census BureauSpecNhoodIs property located in a special Neighborhood historic preservation district? (1 = Yes; 0 or null = No)Syracuse-Onondaga County Planning Agency (SOCPA)InPDIs property located in preservation district? (1 = Yes; 0 or null = No)Syracuse-Onondaga County Planning Agency (SOCPA)PDNAMEPreservation District nameSyracuse-Onondaga County Planning Agency (SOCPA)ELECT_DISTElection district numberOnondaga County Board of ElectionsCITY_WARDCity ward numberOnondaga County Board of ElectionsCOUNTY_LEGOnondaga County Legislative District number (as of Dec 2022)Onondaga County Board of ElectionsNYS_ASSEMBNew York State Assembly District number (as of Dec 2022)Onondaga County Board of ElectionsNYS_SENATENew York State Senate District number (as of Dec 2022)Onondaga County Board of ElectionsUS_CONGRUnited States Congressional District numberOnondaga County Board of Elections

Placer County: https://www.placer.ca.gov/departments/assessorEl Dorado: https://www.edcgov.us/Government/AssessorAt this point we cannot offer Nevada parcels for download. Please contact the assessors at Douglas County, Carson City County, or Washoe County directly for their parcel boundaries.Washoe County: https://www.washoecounty.us/assessorDouglas County: https://www.douglascountynv.gov/45/AssessorCarson City County: https://carson.org/government/departments-a-f/assessorSpatial Reference: NAD83 / UTM zone 10N (26910)Area Covered: Tahoe Basin, Nevada, CaliforniaUpdate Frequency: Quarterly

Polygon property boundaries containing land use, zoning and political information. Boundaries are derived from recorded plats. The dataset is maintained by the City of Naperville Information Technology Dept. GIS team and the the Transportation Engineering Department.