Vacant and Developed Land 2011

Area appearing unimproved on 2011 aerial photography, without regard to developability and accessibility. On partially developed parcels, only undeveloped areas 1/2 acre or larger are included. Metro's Vacant Land Definitions: Every tax lot is determined to be vacant, partially vacant, or developed. Vacant tax lots are those that have no building, improvements or identifiable land use. Developed lots must have improvements and specific land uses. For example, a paved parking lot is developed but an unpaved lot where trucks are parked is vacant. Lots under site development are only considered developed if structure is evident. For example, earthwork and grading are considered vacant but buildings under construction (foundation or more) are considered developed. If a developed tax lot has 1/2 acre (20,000-sq. ft.) or greater portion that is vacant, the lot is considered to be partially vacant and partially developed. A polygon is delineated around the occupied portion, which includes buildings, landscaped yards, etc. The remaining portion (greater than 1/2 acre) is coded vacant (vac = 1). Parks and open spaces are treated as developed. During the assessment of each tax lot, no consideration is given to constrained land, suitability for building, or to redevelopment potential. Date of last data update: 2012-07-30 This is official RLIS data. Contact Person: Al Mowbray [e-mail] Emailing the contact person listed above is the fastest way to get a response, but if you prefer to call, you can contact the Data Resource Center at 503-797-1742 and someone will return your call as soon as they are able. RLIS Metadata Viewer: https://gis.oregonmetro.gov/rlis-metadata/#/details/3131 Terms of Use: https://rlisdiscovery.oregonmetro.gov/pages/open-database-license本数据集针对2011年航空影像中呈现为未改良的区域，不考虑其可开发性与可达性。对于部分开发的地块，仅纳入面积不小于0.5英亩的未开发区域。 都会区（Metro）空置土地定义如下：所有计税地块均被划分为空置、部分空置或已开发三类。空置计税地块指无建筑物、改良设施或可识别土地用途的地块；已开发地块则需具备改良设施与明确土地用途。例如，铺装停车场属于已开发地块，而停放卡车的未铺装场地则为空置地块。处于场地开发阶段的地块，仅当存在明显建筑结构时方可认定为已开发：如土方工程与场地平整阶段仍视为空置，但在建建筑（地基及以上阶段）则归类为已开发。 若某已开发计税地块中存在面积不小于0.5英亩（20000平方英尺）的空置区域，则该地块被认定为部分空置且部分已开发。会围绕包含建筑物、景观庭院等在内的已占用区域绘制多边形边界，剩余面积（大于0.5英亩）将被编码为空置（vac = 1）。公园与开放空间均按已开发地块处理。 在对每个计税地块进行评估时，本数据集未考虑受限土地、建筑适宜性以及再开发潜力等因素。 最后数据更新日期：2012年7月30日。本数据为官方区域土地信息系统（Regional Land Information System，RLIS）数据。联系人：阿尔·莫布雷（Al Mowbray），电子邮箱：[e-mail]。通过上述联系人邮箱获取回复是最快的方式；若您偏好致电咨询，可拨打数据资源中心电话503-797-1742，工作人员将尽快回电。RLIS元数据查看器：https://gis.oregonmetro.gov/rlis-metadata/#/details/3131 使用条款：https://rlisdiscovery.oregonmetro.gov/pages/open-database-license