Nationwide Parcel GIS Database -

I am building a nationwide hunting app and need a developer or GIS specialist to help create a complete U.S. parcel database. The goal is to collect parcel boundaries and ownership information from every county in the country and unify it into a single, structured dataset.

What I Need

1. Parcel Data Acquisition

You will gather parcel data from all U.S. counties. Depending on the county, this may involve:
• ArcGIS REST services (FeatureServer/MapServer)
• qPublic / Schneider Geospatial
• MapGeo
• County Open Data portals
• Direct county downloads (shapefiles, GPKG, FGDB, CSV, etc.)
• Custom county GIS viewers

Each county will have a different system, so you must know how to identify the correct source and extract data accordingly.

2. Required Parcel Attributes

For each parcel, I need as many fields as available, including:
• Parcel boundary polygon
• Parcel ID / PIN / APN
• Owner name
• Owner mailing address
• Site/property address
• Acreage
• Assessed land value
• Assessed improvement value
• Total assessed value
• Land use / zoning (if provided)
• Any other available assessor/GIS attributes

3. Unified Output Format

All county data must be exported into a consistent schema in GPKG or GeoJSON, including:
• Cleaned fields
• Standardized naming
• Valid geometries
• County/state identifiers

4. Automation Script

I also need a Python script or workflow that:
• Detects the GIS platform for each county
• Pulls or scrapes the parcel data
• Rebuilds the unified output automatically
• Can be run monthly/quarterly for updates

This script should work with:
• ArcGIS REST API
• qPublic scraping
• MapGeo endpoints
• Shapefile/FGDB downloads

5. Skills Needed
• Strong GIS experience (GeoPandas, GDAL, OGR, Esri tools)
• Web scraping (Python, Selenium, Requests, BeautifulSoup)
• Understanding of parcel datasets and county assessor systems
• Ability to unify messy datasets into one clean schema
• Knowledge of GPKG, GeoJSON, and spatial data integrity

Final Goal

A nationwide parcel database I can use in my hunting app that includes:
• Every property boundary in the U.S.
• Ownership and assessment data
• Consistent fields
• A script to refresh the data in the future