Digital Mapping

Assessor Implements New Digital Mapping System and New Parcel Numbering System

April 26, 2021 | 2 min reading time

This article is 3 years old. It was published on April 26, 2021.

The City of St. Louis's paper plat maps are now historical and obsolete. A 2016 bond issue passed by voters provided funds for the Assessor's Office to upgrade to a new digital parcel mapping system. Along with the new digital parcel maps, the Assessor has upgraded the parcel numbering system to be in line with the current State mapping guidelines used by all other Missouri Assessors offices.

"The new digital mapping system is another example of our commitment to modernizing our office for the benefit of the taxpayers, the general public and our office alike." said St. Louis City Assessor Michael Dauphin.

The new digital parcel map system utilizes the most advanced ESRI parcel fabric technology and brings the City's mapping from pencil and eraser to the cutting edge of mapping technology. Schneider Geospatial Inc, a subsidiary of Schneider Engineering Corp. of Indianapolis, IN was selected through the City's contract bidding process for the project and started work in 2017.

The digital map part of the project was completed in 2020 and the parcel conversion is the last piece of the project.

Parcel numbers will no longer change whenever a property is in an abatement, becomes mixed use or is partially exempt. The new systems in the Assessor's office eliminate the need for parcel numbers to change except when they are supposed to, which is whenever the boundaries of a parcel change due to a combination or split, or situations like a parcel being changed into several condominium units. Additionally, the parcel number conversion will allow the City to end duplication and triplication of parcel number data used in the City's Geographical Information System (GIS) and allow all GIS users to use one source of parcel number data.

The Assessor's Office , the City's website and other City offices such as the Recorder of Deeds and the Collector of Revenue will continue to show both the old and new parcel numbers on official notices and documentation. This allows citizens and businesses to be able to use the City's information whether they are using older or new parcel information and still get the correct parcel information.


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