Parcels
Current and historic county parcels
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Cadastral Package
For convenience, all cadastral layers have been combined into a single GeoPackage, if you would rather download all layers at once.
Given the limitations of the Shapefile format1, use of the GeoPackage is recommended.
Usage
The data in this layer does not represent a survey. No accuracy is assumed for the data delineated herein, either expressed or implied by Kendall County or its employees.
These data are compiled from official records, including plats, surveys, recorded deeds, contracts, and only contains information required for local government purposes. See the recorded documents for more detailed legal information.
Layer Information
This layer is a snapshot of Kendall County’s official parcel layer, as maintained by the GIS Department.
Fields
| Field | Description |
|---|---|
| name | The name of the parcel. For modern parcels, this is the same as the PIN. For parcels which predate the PIN system, or which received no PIN due to a mapping error, the name will be some descriptive identifier. |
| parcel_type | What kind of parcel it is. See below for details. |
| created_doc | The ID number of the document responsible for creating the parcel. |
| retired_doc | The ID number of the document responsible for retiring the parcel. |
| create_date | The date the parcel was legally created, i.e., the date the associated document was recorded. |
| retired_date | The date the parcel was legally retired, i.e., the date the associated document was recorded. |
| effective_created_date | The date the parcel was added to the assessment rolls. |
| effective_retired_date | The date the parcel was removed from the assessment rolls. |
| gis_acres | The calculated acreage of the parcel.2 |
Assessment Data
Additional parcel information, such as owner, site address, and the like, is the purview of the Assessments Office.
Data may be made available through their Publications page on the County website, or it can be requested through a FOIA.
Assessments data will include the PIN, and can easily be joined into the parcels layer by attribute.
Parcel Types
Most parcels are standard “ownership parcels”. These (almost) never overlap, and are used to denote who owns what. This is what most people think of when they hear the word “parcel”.
In a typical condominium, a person will fully own a single unit, but will also have a small percent interest in the common areas of the development.
Such ownership arrangements are difficult to map in two dimensions. A common convention (which we use at Kendall) is to draw a parcel covering the entire common area, then duplicate that parcel for each unit in the development.
These are quite rare, but it is possible that a tract of land can be independent of ownership, but still needs its own PIN. These are only created or retired at the direction of the Supervisor of Assessments.
Working with Historic Data
Because this layer includes both current and historic features, it may be necessary to filter the data to get what you’re looking for.
Document Date / Number
Document information began to be tracked on our features in 2020. Features created before 2020 may not have any information for the document which created it.
Similarly, features retired before 2020 may not be in the data at all.
We are working to add historic parcel and document information to the map. As those changes are made, the information will be reflected in this layer.
Filtering Data
Here are some common scenarios for filtering the information and how you might do it. Assuming your software as a SQL-like expression builder, here is the SQL you might paste in to filter it.3
Any feature that has no retired_doc information can be assumed to be current. Because of how the underlying data model works, missing information is sometimes equal to an empty string (''), not NULL.
retired_doc = '' or retired_doc is nullThe inverse of the preceding filter. Any feature which does have retired_doc information can be assumed to be retired.
retired_doc != '' or retired_doc is not nullTo see features year by year, you can filter on both the created and retired dates. The query is more specific, because for a given year, we want parcels which are:
- Still current
- Are retired, but were current in a certain year
For example, to get the certified parcels for 2022, you would filter as follows:
(retired_date > '2022-12-31' or retired_doc = '' or retired_doc is null) and
(create_date < '2023-01-01' or created_doc = '' or created_doc is null)If you’re interested in the tax roll parcels, swap the effective date fields for the ones listed above.