Building Footprints are polygon features representing photogrammetrically captured building outlines. The building footprints are rough approximations of buildings. They they do not show the exact footprint. The current version of building footprints are based on aerial photography taken in Spring of 2011. Updates are made for significant structures as needed from digitized development plan approvals and notifications of demolitions until the next aerial flyover. The Building Footprints layer contains building structures including mobile homes, garages, water storage tanks and known underground building features. New building footprints based on aerial imagery taken in Spring of 2017 will be available in April, 2018.