JProctor Group

Research

Chicago Real Estate Research

Seven studies examine Chicago luxury, city, ZIP, metro, western-suburb, property-type, price-measure, supply, and broad county patterns. Eighteen related articles explain the measures, denominators, and property questions behind those findings.

Research period: Public observations through August 2026, with explicitly dated historical companions

Scope: Chicago and selected western-suburb city measures, plus broad Cook, DuPage, and Lake County contextWebsite publication: 2026-09-26Updated: 2026-09-29JProctor Group Research

JProctor Group Research organizes local housing observations into readable studies and practical articles. The data period appears on every publication; the website publication date records when it was posted. These are point-in-time research, not a current inventory feed, appraisal, or prediction of an individual property outcome.

Published studies

Research study

Chicago Luxury Market: August 2026

A report-defined view of Chicago luxury activity, price bands, sales-to-inventory ratios and size-coverage limits.

August 2026, with August 2025 comparison and 13-month history

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Research study

Chicago City, ZIP and Metro Market Study: August 2026

A city-versus-metro, selected-ZIP, transaction-stage, price-definition and search-denominator study.

August 2026; July 2026 MRED companion; April-June 2026 search period

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Research study

Chicago and Western Suburb Home-Value Paths: 2020 to August 2026

Original analysis of Zillow city ZHVI data compares Chicago with Elmhurst, Hinsdale, Glen Ellyn, Western Springs, and Clarendon Hills without treating city indexes as property valuations.

January 2020 to August 31, 2026

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Research study

Single-Family and All-Home Value Indexes Across Chicago-Area Cities

A six-city August 2026 comparison shows why Zillow's single-family and all-homes indexes should not be treated as a matched-home price premium.

August 31, 2026

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Research study

Chicago-Area Inventory and New-Listing Reset: August 2026

Zillow city series show Chicago, Elmhurst, and Glen Ellyn adding new listings from August 2025 while inventory remained far below August 2019 levels.

August 2019, August 2025, and August 2026

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Research study

Cook, DuPage and Lake County Negotiating Conditions: May 2026

A historical Redfin county comparison separates sale-to-list ratios, price drops, market speed, inventory, and months of supply without turning county averages into property predictions.

May 1 to May 31, 2026

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Research study

Modeled Home Values and Median Sale Prices Across Four Chicago-Area Cities

A July 2026 comparison of Zillow city ZHVI and median sale price shows why a modeled housing-stock index and the middle completed sale are not interchangeable.

July 31, 2026

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Research articles

Research article

Chicago Attached Luxury Strengthened While Its Median Price Barely Moved

Chicago attached luxury sales rose 23.5% while inventory fell 13.4%. Original research explains why a nearly flat price median misses the change.

August 2026

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Research article

Chicago Luxury Competition Thins as the Price Bracket Rises

Original analysis of Chicago luxury price bands reveals large differences in sales relative to inventory, including a balanced upper attached tier.

August 2026

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Research article

What Chicago Luxury's 185% Sales Ratio Actually Means

Chicago luxury’s 185% sales ratio is valid arithmetic, not a sale probability. Learn what the ratio, eight-day median and incomplete size data mean.

August 2026

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Research article

Chicago City Accounts for Most of the Metro's Inventory Decline

Chicago city accounted for 62.2% of the metro’s annual inventory decline. Original analysis separates the city from the rest of the nine-county area.

August 2026

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Research article

Chicago's Contracts and Closings Were Sending Different Signals

July MRED data show Chicago detached contracts rising while closings fell. Why transaction stages need separate interpretation.

July 2026

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Research article

Chicago's Inventory Shortage Is Not Uniform Across ZIP Codes

A 15-ZIP Chicago study finds sharply different inventory trends and exceptions to the idea that less supply always means faster market time.

August 2026

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Research article

Why Chicago Can Have Four Different Home-Price Headlines

Zillow, Realtor.com, Redfin and Illinois REALTORS show different Chicago prices. Definitions and reporting windows explain why they are not interchangeable.

August 2026 observations; publisher-specific reporting windows

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Research article

Chicago Relocation Searches Point to Two Different Audiences

Chicago relocation searches reveal a large local audience and concentrated inbound interest. Original research explains the limits of the data.

April-June 2026

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Research article

The Same 2020 Baseline Produced Different Chicago-Area Value Paths

Chicago and five western suburbs did not share one modeled home-value path from January 2020 through August 2026.

January 2020 to August 2026

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Research article

Why Single-Family and All-Home Indexes Can Point in Different Directions

Chicago's August single-family ZHVI was below its all-homes index, while five reviewed suburbs showed the opposite relationship.

August 2026

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Research article

More New Listings Do Not Automatically Produce More Inventory

Chicago, Elmhurst, and Glen Ellyn each added new listings from August 2025, but their inventory totals did not move in the same direction.

August 2019, August 2025, and August 2026

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Research article

County Negotiating Signals Still Need Property Comparables

Cook, DuPage, and Lake Counties showed similar price-drop shares but different two-week contract speeds in May 2026.

May 2026

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Research article

Why a Monthly Sale Median Can Exceed a Home-Value Index

July 2026 Zillow observations show that a transaction median and a modeled housing-stock index can differ without creating a property-level pricing rule.

July 31, 2026

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Research article

Modeled Home-Value Change Is Not the Same as Homeowner Equity

Six city ZHVI paths produced modeled dollar changes from about $68,706 to $433,391, but those changes omit debt, costs, improvements, and transaction timing.

January 31, 2020 to August 31, 2026

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Research article

Annualized Home-Value Growth Is a Historical Summary, Not a Forecast

Annualizing the January 2020 to August 2026 ZHVI paths produces compact historical rates, but those rates should not be projected into a future home value.

January 31, 2020 to August 31, 2026

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Research article

Inventory Recovery Depends on Which Baseline You Use

August 2026 inventory was above 2025 in Elmhurst and Glen Ellyn but still about 69% below 2019, creating a much larger recovery calculation from the current base.

August 2019, August 2025, and August 2026

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Research article

An Average Sale-to-List Ratio Does Not Describe Every Sale

May 2026 county averages exceeded 101% even though only about half of sales closed above final list, showing why an average and a share answer different questions.

May 1 through May 31, 2026

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Research article

Inventory Direction and Months of Supply Answer Different Questions

Cook, DuPage, and Lake Counties had different year-over-year inventory directions in May 2026 while months of supply remained within a narrow 2.6 to 2.8 range.

May 1 through May 31, 2026

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