King CountyFor more information about this layer please see the GIS Data Catalog . Elevation certificate is an official record from FEMA that shows new buildings and substantial improvements that are elevated. This information is needed to show compliance with the floodplain management ordinance. This certificate is developed to fulfill the requirement required by the property owner to obtain flood insurance.ArcGIS FeatureLayerhttps://hub.arcgis.com/datasets/1df441c2f8994a75bc5e4a5fc117810b_0engKing County GIS Open DataPublicElevation Certificate [Washington (State)--King County]Web servicesWashington (State)--King CountyWashington (State)Last Modified: 2026-01-08