tx_oz — Opportunity Zone Explorer
An interactive map of about 8,800 for-sale properties that sit inside federally designated Opportunity Zones in Texas.
What it was
Opportunity Zones are economically distressed census tracts where new investment can get preferential tax treatment. Finding listings inside them is tedious, so this app did the matching ahead of time: Zillow listings were joined offline against county parcel records and Census Opportunity Zone tracts, covering 254 zones across 124 counties.
On the map you could filter by county, price, acreage, price per acre, and beds/baths, then export the filtered list as CSV.
How it worked
- Read-only SQLite dataset (about 275 MB) built offline; the web app only queried it.
- Leaflet map with one marker per zone, sized by how many listings it held.
- Small JSON API for stats, zones, properties, counties and CSV export.
- Tailwind CSS built with the standalone CLI, so no Node toolchain was needed.
Built with
This project is retired and its server has been shut down. Its code and data are kept, so it can be brought back if needed. Browse the projects that are still running →