Featured test case · Duval County, FL

Test result: the county GIS may give Parcel A ~2.6 acres its deed does not appear to convey.

GIS polygon10.59acres · 001542 0010

Deed traverse (best-fit)7.96acres · ORB 19870-841

Parcel B lot inside2.48acres · 001531 5300

408,950parcels checked

42overlaps found

3deed-checked

How the test analysis works Proposed · test result

FlaggedThe Parcel B lot appears to sit fully inside the Parcel A polygon — a contained_parcel flag, not an edge sliver.
Appraiser mismatchThe Parcel A legal description states 7.83 ac; GIS shows 10.59 ac. The Parcel B lot is Lot 3 of a 2003 plat.
Deed pulledOfficial Records 19870-841 (2021 warranty deed), OCR'd and parsed call by call (OCR may contain errors).
Traverse closes 1:3533636 calls, misclosure 0.007 ft. A best-fit placement matches GIS minus the Parcel B lot at IoU 0.981, which suggests that lot lies outside the deed.
Verdict proposed for reviewThe test result suggests cutting the Parcel B lot from the Parcel A polygon — a proposal, not a finding, and not applied. Open the case file →

Before · GISAfter · deed (best-fit)

Drag the handle to compare. Before: orange = county GIS polygon for Parcel A, red dashed = Parcel B lot inside it. After: green = Parcel A deed tract (best-fit COGO traverse), red hatching = Parcel B lot shown as excluded. Illustration of a data quality test result only.

Not authoritative. Disclaimer: results are automated, experimental data quality test results computed from public data. Verdicts are proposals, not findings. Boundary placements are best-fit, not measured in the field. Consult a licensed surveyor or attorney and the official records. GeoRescue is not affiliated with the City of Jacksonville, the Duval County Clerk of Courts or the Duval County Property Appraiser, and does not own their data.

Latest run

Run 20261026T160815+0000 · Duval County FL parcels (COJ CityBiz/Parcels) - CI extract · finished 2026-10-26T16:12:46.395051+00:00
auto-apply: invalid-geometry repair only; everything else is a proposal for review

408,950parcels

42overlap case files

1,090 gap

995 sliver_polygon

271 attribute_missing

37 overlap

14 geometry_invalid

5 contained_parcel

Flagged parcels

contained_parcel overlap geometry_invalid gap sliver_polygon Missing attribute (e.g. owner name)· heatmap at low zoom, click a parcel

Issues

feature	check	severity	message	metric

Pipeline steps

step	status	s	note
fetch	ok	149.4
inspect	ok	83.37
safe_repair	ok	1.25
pao_triage	ok	15.94
clerk_index	ok	10.52
first_pass_verdicts	ok	0.0
deed_verification	skipped	0.0	no deed PDFs present (deed images need a browser; see README)
collect_verification	ok	0.0