Multifamily Properties - Assisted

HUD’s Multifamily Housing property portfolio consist primarily of rental housing properties with five or more dwelling units such as apartments or town houses, but can also include nursing homes, hospitals, elderly housing, mobile home parks, retirement service centers, and occasionally vacant land. HUD provides subsidies and grants to property owners and developers in an effort to promote the development and preservation of affordable rental units for low-income populations, and those with special needs such as the elderly, and disabled. The portfolio can be broken down into two basic categories: insured, and assisted. The three largest assistance programs for Multifamily Housing are Section 8 Project Based Assistance, Section 202 Supportive Housing for the Elderly, and Section 811 Supportive Housing for Persons with Disabilities. The Multifamily property locations represent the approximate location of the property. The locations of individual buildings associated with each property are not depicted here. Location data for HUD-related properties and facilities are derived from HUD's enterprise geocoding service. While not all addresses are able to be geocoded and mapped to 100% accuracy, we are continuously working to improve address data quality and enhance coverage. Please consider this issue when using any datasets provided by HUD. When using this data, take note of the field titled “LVL2KX” which indicates the overall accuracy of the geocoded address using the following return codes: ‘R’ - Interpolated rooftop (high degree of accuracy, symbolized as green) ‘4’ - ZIP+4 centroid (high degree of accuracy, symbolized as green) ‘B’ - Block group centroid (medium degree of accuracy, symbolized as yellow) ‘T’ - Census tract centroid (low degree of accuracy, symbolized as red) ‘2’ - ZIP+2 centroid (low degree of accuracy, symbolized as red) ‘Z’ - ZIP5 centroid (low degree of accuracy, symbolized as red) ‘5’ - ZIP5 centroid (same as above, low degree of accuracy, symbolized as red) Null - Could not be geocoded (does not appear on the map) For the purposes of displaying the location of an address on a map only use addresses and their associated lat/long coordinates where the LVL2KX field is coded ‘R’ or ‘4’. These codes ensure that the address is displayed on the correct street segment and in the correct census block. The remaining LVL2KX codes provide a cascading indication of the most granular level geography for which an address can be confirmed. For example, if an address cannot be accurately interpolated to a rooftop (‘R’), or ZIP+4 centroid (‘4’), then the address will be mapped to the centroid of the next nearest confirmed geography: block group, tract, and so on. When performing any point-in polygon analysis it is important to note that points mapped to the centroids of larger geographies will be less likely to map accurately to the smaller geographies of the same area. For instance, a point coded as ‘5’ in the correct ZIP Code will be less likely to map to the correct block group or census tract for that address. In an effort to protect Personally Identifiable Information (PII), the characteristics for each building are suppressed with a -4 value when the “Number_Reported” is equal to, or less than 10. To learn more about Multifamily Housing visit: https://www.hud.gov/program_offices/housing/mfh. Data Dictionary: DD_HUD Assisted Multifamily Properties Date of Coverage: 03/2026 Last Updated: 04/2026美国住房与城市发展部（HUD）的多户住房资产组合主要由拥有5套及以上住宅单元的租赁住房物业构成，例如公寓或联排住宅，但也可涵盖养老院、医院、老年住房、移动住宅公园、退休服务中心，偶尔还包括闲置土地。HUD为物业业主与开发商提供补贴与拨款，旨在推动面向低收入群体以及老年、残障等有特殊需求人群的可负担租赁住房单元的开发与保有。 该资产组合可分为两大基本类别：投保类与补助类。HUD针对多户住房的三大核心补助项目分别为：第8条基于项目的补助计划（Section 8 Project Based Assistance）、第202条老年人支持住房计划（Section 202 Supportive Housing for the Elderly），以及第811条残障人士支持住房计划（Section 811 Supportive Housing for Persons with Disabilities）。 多户住房物业的位置仅代表物业的大致坐落，此处未标注与各物业相关的单栋建筑位置。HUD相关物业与设施的位置数据源自该部门的企业地理编码服务。尽管并非所有地址都能被完全精准地理编码并绘制映射，但我们始终致力于提升地址数据质量并扩大覆盖范围。在使用HUD提供的任何数据集时，请务必考虑这一局限性。 使用本数据时，请注意名为"LVL2KX"的字段，该字段通过以下返回代码标识地理编码地址的整体精度： ‘R’ - 插值屋顶点（高精度，以绿色标注） ‘4’ - ZIP+4 质心（高精度，以绿色标注） ‘B’ - 街区组质心（中精度，以黄色标注） ‘T’ - 普查片区质心（低精度，以红色标注） ‘2’ - ZIP+2 质心（低精度，以红色标注） ‘Z’ - ZIP5 质心（低精度，以红色标注） ‘5’ - ZIP5 质心（与上述一致，低精度，以红色标注） Null - 无法完成地理编码（不会显示在地图上） 若要在地图上显示地址位置，仅可使用LVL2KX字段编码为‘R’或‘4’的地址及其关联的经纬度坐标。此类编码可确保地址被正确标注至对应的街道路段及普查街区范围内。其余LVL2KX编码按降序指示可确认地址的最精细地理层级。例如，若某地址无法被精准插值至屋顶点（‘R’）或ZIP+4质心（‘4’），则该地址将被映射至下一个最接近的已确认地理区域的质心：街区组、普查片区等。 在执行任何点入多边形分析时，需注意：被映射至较大地理区域质心的点位，匹配同一区域内较小地理区域的准确性会更低。例如，编码为‘5’的地址虽位于正确的邮政编码区域内，但匹配该地址所属的正确街区组或普查片区的概率会更低。 为保护个人可识别信息（Personally Identifiable Information，简称PII），当"Number_Reported"字段值小于或等于10时，单栋建筑的特征信息将以-4值进行隐藏处理。 如需了解更多多户住房相关信息，请访问：https://www.hud.gov/program_offices/housing/mfh。 数据字典：DD_HUD 补助类多户住房物业 覆盖日期：2026年3月 最后更新时间：2026年4月