What is MPROP?
MPROP is the City of Milwaukee Master Property Record. It contains the information found in Map Milwaukee applications, a great place to look for current property information. If you want to query for large numbers of records in a GIS context the City provides both data and shapefile download sites. MPROP Pal is designed to help GIS users find and utilize the data they need.
What is MAI?
MAI is the City of Milwaukee Master Address Index. It is a table containing a record for every address (most addresses) in the City. Since there may be multiple addresses for a single parcel, it has far more records than MPROP, but fewer fields.
Why MPROP Tools?
Unfortunately MPROP and MAI files in Excel format have too many records to open successfully in the popular GIS software ArcMap nor will ArcMap open these XML or ASCII files. MPROP Tools are a set of ArcMap Toolbox Tools customized to import the City XML and ASCII formats directly into dBASE files using column formats found in MPROP Documentation and MAI Documentation and similar to to historical MPROP files. The dBASE files created with these tools use significantly less file space than those created using a work around like conversion to a text file or from Excel to Access mdb.
Why an MAI Locator?
The MAI is great for generating mailing lists based on taxkey, but it would be even better to be able to automatically geocode (give X and Y coordinates to) a list of City of Milwaukee addresses. This locator uses the MAI to do exactly this task.
Sources for Everyone
Current MPROP and MAI data may be downloaded (ASCII or XML or MS Excel format) from the Map Milwaukee Download Tabular Data website:
MPROP and MAI (Current)
MPROP Tools for ArcMap 10.x will convert MPROP.xml and MAI.xml files to dbf format. Unzip folder to a convenient location. Follow instructions in ArcMap for "adding" the Toolbox in the folder to your project. Use the appropriate tool.
MAI Locator for ArcMap 10.x uses the 2014 MAI.xml and parcel centroids from 2014 parcel file to create a single house address locator for properties in the City of Milwaukee. Unzip folder to a convenient location. Follow instructions in ArcMap for "adding" the locator in the folder to your project. Add a table of Milwaukee addresses to your project (a column named Address containing address, another column named City with city and a third column named State with state). Right-click on the table and select "Geocode Addresses". Set "Geocoding Options": side and end offsets to 0. It's always wise to set Minimum match score to 100 and Spelling sensitivity and Minimum candidate score low (around 10) so that many potential addresses are available to use when rematching unmatched addresses.
Historical MPROP Intra-Year (Most Months) Snapshots (dbf format November 2005 - July 2011) Courtesy of Milwaukee Nonprofit Center
Historical MPROP Annual Snapshots (dbf format 1975 - 2005; XML format 2006 - 2012) from the City of Milwaukee
Parcel outline shapefile data may be downloaded (shp format) at the Map Milwaukee Download Map Data website:
Parcel Outline Shapefile to which MPROP in dbf format can be joined (Current)
Historical Parcel Shapefiles for joining same year MPROP in dbf format (2001 - 2002; 2007 - 2014)
Historical Parcel Shapefiles with Joined MPROP data (2010 - 2011) Courtesy of Milwaukee Nonprofit Center
Sources for UWM Researchers
The Milwaukee Master Property File (MPROP) may be obtained from the American Geographical Society Library, or from the U drive.
U:\MPROP\ may be accessed from the computers in the School of Architecture & Urban Planning. It contains the Historical MPROP dbfs found at the City download site.
Tutorial 1 Using MPROP in Microsoft Access (Standalone Database)
Tutorial 2 MPROP database using ArcMap and the Milwaukee Parcel Shapefile