Vacant and Developed Land 2008
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Areas appearing unimproved on 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 activity 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 al.mowbray@oregonmetro.gov 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/2488 Terms of Use: https://rlisdiscovery.oregonmetro.gov/pages/open-database-license
航空影像上呈现为未改造状态的区域，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。 Metro空地定义标准：所有计税地块均被划分为空地、部分空地或已开发地块三类。空地计税地块指无任何建筑物、设施或可识别土地用途的地块。已开发地块需具备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空地则归类为空地。处于场地开发阶段的地块，仅当结构施工活动明确时才被视为已开发：土方工程与场地平整归类为空地，但处于施工中的建筑物（地基及以上）则视为已开发。若某已开发计税地块存在≥0.5英亩（20000平方英尺）的空置区域，则该地块被划分为部分空地与部分开发地块。将包含建筑物、景观庭院等在内的已占用区域绘制为多边形，剩余面积超过0.5英亩的部分则被编码为空地（vac=1）。公园与开放空间均被视为已开发区域。 在对每块计税地块进行评估时，无需考虑受限土地、建筑适宜性或再开发潜力。 最近一次数据更新日期：2012年7月30日 本数据为官方区域土地信息系统（RLIS）数据集。 联系人：阿尔·莫布雷（Al Mowbray），邮箱：al.mowbray@oregonmetro.gov 发送邮件至上述联系人是获得回复的最快方式；若您偏好电话咨询，可拨打数据资源中心热线503-797-1742，工作人员会尽快回电。 RLIS元数据查看器：https://gis.oregonmetro.gov/rlis-metadata/#/details/2488 使用条款：https://rlisdiscovery.oregonmetro.gov/pages/open-database-license
