QOZ Mobile Home Park Finder — deal-screening build

Mobile-home / manufactured-home communities inside Qualified Opportunity Zone tracts, enriched with lots-per-tract ranking, FEMA flood zone, and Census median rent / home value / income. QOZ = HUD (OZ 1.0, 12/2019) · Parks = HIFLD (NASA NCCS mirror) · Flood = FEMA NFHL · Rent = ACS 5-yr. QOZ map is being redrawn; treat OZ 1.0 as current-of-record until the new map ships, then repoint the QOZ layer.
Data sources, Census API key & offline fallback

Pipeline: query HUD QOZ tracts + HIFLD parks for the state → keep parks inside a QOZ (point-in-polygon) → rank tracts by total lots → (optional) tag each park's FEMA flood zone → join ACS median rent/value/income by tract.

Median rent / home value / income come from the Census ACS API, which now requires a free key. Get one free (30 sec), paste it below, and it's saved in this browser only.

Census API key:

Sources: QOZ services.arcgis.com/VTyQ9soqVukalItT/.../Opportunity_Zones/FeatureServer/13 · Parks bundled HIFLD snapshot (source: maps.nccs.nasa.gov, IPv6-only → snapshotted offline) · Flood hazards.fema.gov/arcgis/rest/services/public/NFHL/MapServer/28 · Rent api.census.gov/data/2022/acs/acs5 (B25064 / B25077 / B19013).

If a live parks fetch is blocked (CORS): load a GeoJSON/CSV you downloaded →
Parks
Tract ranking
—parks in QOZ
—QOZ tracts
—total lots/units*
—counties
—in SFHA flood
—median rent (avg)
Pick a state and click Load parks in QOZs. Default is Texas. *lots/units are from HIFLD and often blank — treat as a lead list.