Taking Indiana Commercial Appraisal Assignments from Chicago: What You Need to Know About the Data

How Indiana's commercial data differs from Illinois

The biggest adjustment for an appraiser used to the Chicago market is the absence of a commercial MLS with mandatory sale-price disclosure. Indiana doesn't have that -- but it has something that functionally covers the same need: every real property sale in the state requires a Sales Disclosure Form (State Form 46021), filed with the county and rolled up statewide through the DLGF Gateway system. That filing includes sale price, buyer and seller, property class, and flags indicating whether the auditor's office considers the sale arm's-length.

In practice, this makes Indiana's price-verification system more systematic than a lot of MLS-driven markets -- disclosure is a legal filing requirement tied to the conveyance itself, not a voluntary listing courtesy. It's just organized differently than what a Chicago-market appraiser is used to searching, and there's no single familiar interface for it.

The 92-county structure and what it means practically

Indiana administers assessment and sales data at the county level, and there are 92 of them. Each county runs its own assessor's office, its own CAMA (computer-assisted mass appraisal) vendor, and in some cases its own parcel numbering conventions. For an appraiser used to pulling comps from one regional MLS or a single county's system, this is the main friction point on an Indiana assignment -- there's no single portal that spans county lines, and the portal you land on for one county may look nothing like the portal for the county next to it.

This matters most on assignments that span multiple counties, or on corridor projects that cross county lines entirely -- which right-of-way work frequently does.

INDOT right-of-way assignments from the Chicago market

Northwest Indiana's highway corridors -- including the Indiana Toll Road and connecting INDOT projects -- regularly draw appraisers from the Chicago market for right-of-way assignments, simply because of geographic proximity. These assignments require INDOT-compliant comparable sales documentation: MD-26 for land, MD-27 for commercial improved property, each with its own required fields and sourcing expectations. If you haven't worked an INDOT right-of-way assignment before, the form format itself -- not just the underlying data -- is worth reviewing before your first submission, since INDOT reviewers are checking both the numbers and whether the form was completed correctly for the property type it describes.

Getting up to speed quickly

A short list of where to start: the DLGF Gateway system for SDF sale disclosure downloads, IGIO for statewide parcel boundary and GIS data, the relevant county assessor's own portal for property record cards on your specific comparables, and INDOT's Real Estate Manual for the form requirements themselves if the assignment is right-of-way work. None of these are hard to find once you know they exist -- the friction is mostly in not knowing the landscape the first time through, and in the county-by-county portal variation described above.