Chicago attached luxury sales rose 23.5% while inventory fell 13.4%. Original research explains why a nearly flat price median misses the change.
Evidence: August 2026 versus August 2025.
Chicago's attached luxury market offers a useful warning about relying on median price alone. Its reported median sale price increased by approximately 1.1% over the past year. The change in transaction activity was much larger.
The Institute for Luxury Home Marketing's September Chicago report defines attached luxury as properties priced at $750,000 and above. August sales increased from 200 in 2025 to 247 in 2026, a gain of 23.5%. Reported inventory declined from 568 to 492, down 13.4%.
Dividing sales by inventory produces a ratio of 50.2% for August 2026, compared with 35.2% a year earlier. That is an increase of 15.0 percentage points, or 42.6% relative to the prior-year ratio. The median sale price moved from $940,000 to $950,000.
The activity changed more than the price headline
The combination means more reported transactions were completed against a smaller pool of available inventory. It does not prove that every attached property attracted more interest or that buyers faced the same conditions in every building.
It does show why a nearly flat price median can miss a meaningful change in the selling environment. Prices summarize transactions that occurred. Inventory measures the properties competing for transactions. Those measures can move at different speeds.
Reported median days on market also declined, from 14 to 11. This describes the sold population represented in the report, not a promise that a newly listed unit will sell in 11 days.
Single-family luxury tells a different year-over-year story
In the report's single-family segment, which starts at $850,000, August sales declined from 394 to 372. Inventory declined from 539 to 518. Its sales-to-inventory ratio slipped from 73.1% to 71.8%.
Single-family luxury still had the higher ratio, and both segments met the Institute's seller-market threshold. The distinction is between the current level and the direction of change: single-family remained stronger on this measure, while attached showed the larger improvement over the year.
The different starting prices matter. These figures compare two report-defined luxury segments, not otherwise identical properties at the same price. They cannot establish that attached ownership itself caused stronger performance.
What the finding changes in a property discussion
For an attached-home seller, the useful next step is to examine direct competitors within the relevant price range, location and property type. Building characteristics, unit condition, association costs and available alternatives may matter more than a citywide label. This study does not measure those factors.
For a buyer, a modest increase in the median price should not be mistaken for abundant choice. The reported inventory count fell while sales increased. That combination warrants checking how many genuinely comparable properties remain available before interpreting a stable median as a negotiating advantage.
The finding is a reason to study the available alternatives more carefully. It is not a forecast of future appreciation or a formula for the offer price. A market can become more active while the mix of completed transactions keeps its price median relatively steady.
Source and method: Original calculations from the ILHM Luxury Report, Chicago, September 2026, pages 2-5. Ratios use unrounded counts. The PDF does not specify its precise Chicago geographic boundary; historical threshold consistency was not independently verified. Attached is the publisher's category and is not silently relabeled condominium-only.