GroundworkOpen the map

Accuracy

Corrections

20 fixes, 5,502,712 parcels changed. Every wrong fact we found and fixed, the primary source we checked it against and how many parcels it changed.

DateWhat was wrongPrimary sourceThe fixParcels
Oct 25, 2026Ohio and Georgia pages said no tax rate matched the parcel's location where we had not loaded the county's ratesCounty tax rate files, loaded for 6 of 88 Ohio countiesThe page says the county's tax rates are not loaded yet42,319
Oct 25, 2026Florida pages read "Building on the roll" on parcels whose county roll lists no improvementsEsri Community Maps building outlines and the county tax rollThe page prints "Built · not yet on the county roll" with the outline's source and date80,989
Oct 25, 2026Florida farm-classified parcels printed the classified-use discount as "Improvements"Florida DOR tax roll just value and classified-use value, Florida Statutes 193.461Land prints at its just value and the classified-use value gets its own column135,904
Oct 24, 2026Florida parcels were flagged "same-owner assemblage" when a nearby parcel was only a candidate, not the same ownerCounty tax roll owners within 300 mThe flag needs the same owner within 300 m319,488
Oct 24, 2026Florida pages said "No rezonings, site plans or road projects within 3 miles" in 58 counties whose filings we never loadedCounty development filings, loaded for 9 of 67 Florida countiesThe line names only the filing kinds loaded for the county, or prints nothing469,680
Oct 20, 2026Tennessee common areas read "Building on record" beside a tax estimateDavidson, Williamson, Hamilton and Robertson county parcel layers (common-area feature type)Land type reads "Common area" and no tax estimate prints17,340
Oct 20, 2026State parcel pages repeated the whole flood zone list under a headline that already named the flood shareFEMA National Flood Hazard LayerThe line under the headline lists only the rest of the parcel2,233,319
Oct 20, 2026Road frontage named a bare route number as the road, as in "968 ft on 77"Census TIGER roadsA numeric road name is dropped from the frontage line20,345
Oct 20, 2026Ohio, Illinois and Indiana parcel pages put the parcel in its mailing city, not the town that holds itCensus TIGER 2025 places and Indiana DLGF taxing districtsThe town comes from the official place at the parcel109,741
Oct 20, 2026Hyde County, North Carolina addresses printed the house number twiceNC OneMap parcel layer, Hyde County site address fieldsThe cut copy is dropped and "0 DEFAULT STREET" fills print no street14,146
Oct 20, 2026California pages named a county's zoning on parcels inside a city's limitsCalifornia Department of Technology city boundaries, Sep 2026The page names the city that sets the zoning and prints no county code118,863
Oct 18, 2026Florida lots owned by churches, hospitals, clubs and retirement communities printed no priceCounty tax roll owner namesOnly cemetery-owned land is withheld as not for sale18,785
Oct 15, 2026Indianapolis plan density bands printed as a bare number, "0" for 0 to 1.75 units per acreIndianapolis DMD land use plan layer, read Oct 15, 2026The whole band prints31,307
Oct 10, 2026Florida parcels partly in a FEMA flood zone showed the larger zone, often X, as the flood factFEMA National Flood Hazard LayerThe flood fact names the flood zone and its share, as in "Partly in flood zone AH (40%)"1,671,224
Oct 10, 2026All-wetland Florida land with no buildable acres was priced as a homesiteUSFWS National Wetlands InventoryThe sell figure is withheld: "All wetland: conservation land, not a homesite"64,864
Sep 27, 2026Roll-vacant Florida greenbelt tracts printed a land-and-buildings split that is the roll's farm-use splitFlorida DOR tax roll, agricultural classificationThose tracts print land only, with no county land allocation144,159
Sep 27, 2026Open contamination on a Florida parcel never reached its buy-for figureEPA National Priorities List and Florida DEP cleanup sitesA live on-parcel cleanup site withholds the buy-for or prints the clean-land line1,437
Sep 27, 2026Florida new-home values read "Estimated from nearby land sales"Florida DOR tax roll and county deed records for new-home closingsNew-home and farm-market estimates keep their own method line8,494
Sep 27, 2026Florida farm-market estimates multiplied a parent tract's roll acres onto a much smaller parcel outlineFlorida DOR tax roll acres against the county parcel map outlineThe figure is withheld when the outline is under a third of the roll acres or the tract's own recent sale is far below it209
Sep 27, 2026Florida fallback estimates printed under half the parcel's own sale of the last 24 monthsCounty deed records, the parcel's own qualified saleThe estimate anchors on that sale and says so99

Date: the day the fix was made. It went live with the next release. Something wrong on a parcel page? Open About these numbers and use Report it. We check each report against the primary source before anything changes; a report prints here only once it is fixed, in our words, with no names.

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