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Digital Spatial DataParcel and Property Files
Local level government, mostly at an assessor's office, maintains property information for tax collection purposes. Its original property information source is the Registry of Deeds (usually at county level) which maintains information on all transfers of real estate. After obtaining updated property ownership and lot information from the Registry of Deeds, the assessor's offices further add updated information on various characteristics of each property to assess its value and support their decisions. Information on properties collected by local government vary, but typically includes geography (address, administrative boundaries, neighborhood), ownership, housing characteristics (size, facilities, type of use) and conditions. Although, for tax assessors, the purpose of the property information collection is to evaluate properties and assign a fair market value to each for tax assessors, the value of this information can go beyond its original purpose and can be used in a variety ways by urban planners, community organizations, and researchers of various disciplines.
MPROP - Milwaukee Property Record Files Master Property Record, or MPROP as it is commonly called, is a computerized inventory of all properties in the city of Milwaukee. It contains more than 90 elements of data describing each of the approximately 160,000 properties in the city. The file was created in 1975 to provide current and accurate property information with enough flexibility to be accessed in a variety of ways. Since it was implemented and made available, the data has become invaluable and is currently used by nearly every city department. This same data is now being broadly distributed in a format that is compatible with commonly available computer equipment and operating systems. On campus, there are two ways to obtain MPROP files:
Since 2002, latest MPROP files are also available for downloading via online from the City of Milwaukee's Map Milwaukee website, http://isdweb1.ci.mil.wi.us/RequestServices/PropertyData.html (click "Map Milwaukee" and then click "Download Tabular Data")
Milwaukee County Cadastral Mapping Created by SEWRPC, this countywide parcel data contains taxkey information, which can be used to join with property record files, such as MPROPs. These data files, and any electronic files derived from them, cannot be used for commercial application, sold, redistributed, or published in any electronic format (including the World Wide Web). Paper copies of the original maps created with the data or published in reports may be produced, and the AGSL reserves the right to verify the educational purpose of each request
Ozaukee County Ozaukee County Land Information Office provides access to the parcel CAD drawing files via online.
Waukesha County Waukesha County provides access to both parcel and property information via online as a part of its interactive mapping database system. The AGSL also archives 2002 parcel and a property database.
Digital Sanborn Map (Wisconsin; web) The early 20th century's digital Sanborn maps of the state of Wisconsin are available via online for the UWM members. (Go to UWM Libraries database A-Z page and look under the "D" section.) Sanborn maps are large-scale plans containing data that can be used to estimate the potential risk for urban structures. This includes information such as the outline of each building, the size, shape and construction materials, heights, and function of structures, location of windows and doors. The maps also give street names, street and sidewalk widths, property boundaries, building use, and house and block numbers. The AGSL also has paper Sanborn maps of the City of Milwaukee. Inquire for more information about our paper Sanborn collection.
Comments for the AGSL? Send them to agsl@uwm.edu. |
