Independent post-event building damage observations

For produced non-sensitive Rapid Mapping GRA activations and AOIs, downloadable building point/polygon records emit an imagery-derived damage grade, determination method, change status, and origin/damage-source keys. Public activation and product metadata pin event, AOI, pre/post source acquisition, delivery, and product version; the manual defines Destroyed, Damaged, Possibly damaged, No visible damage, and Not Analysed and states the proxy/near-real-time limitation.

Nearmap’s standing ImpactResponse subscription and Damage Classifications AI let a licensee query a post-cat survey by street address/date or by known surveyResourceId plus a buyer-defined AOI. The documented response returns the selected building geometry and confidence, survey resource and survey identifiers, survey date, vertical perspective, postcat flag, system version, five-/three-/two-tier damage probabilities, component-level damage ratios, and damage model/presentation versions. Nearmap separately defines the FEMA-aligned classes and the greater-than-50%-confidence footprint-ratio threshold. Together these pin the building, post-event survey, observation method, affected components, classification definitions/threshold, and model version; a comparison can be tied to separately selected survey dates when used.

Within a published UNOSAT event analysis extent, anonymous GDB/SHP building-point files identify the observed structure location, sensor date and identity, confidence, field-validation state, damage class, event code, and notes. The official release and map pin pre-event imagery, post-event observation, assessment method and visibility caveats, publication date, and release version.

The extract returns building-attributed post-catastrophe FEMA classification and roof/component damage detections and shares, with event identity, pre/post context, capture date, image/model version, and publication dates. It does not establish causation, policy coverage, or repair cost.