Grayslake, IL Housing Market 2026: Median Home Price, Last 12 Months
What homes actually sell for in Grayslake: a median closing price of $370,000 across 292 closings Resideline tracked over the last 12 months, plus the full price spread.
If you invest in or around Grayslake, the number that matters is what homes actually close for, not what sellers are asking. Here is what Grayslake sale prices look like right now, built from the closings Resideline tracked over the last 12 months, as of September 2026.
The snapshot
- •Closings tracked, last 12 months: 292
- •Median sold price, last 12 months: $370,000
- •Median sold $/sqft, last 12 months: $199
- •Middle half of sales closed between: $287,000 and $449,900
What the numbers say
Resideline tracked 292 closed sales in Grayslake over the last 12 months, with a median closing price of $370,000. That median is the midpoint of what buyers actually paid, not what sellers hoped to get, which is why it moves differently from the asking prices you see on listing sites. The middle half of those sales closed between $287,000 and $449,900. That spread matters more than the headline median: where a specific property sits inside it decides whether the citywide number helps you or misleads you. These are the closings Resideline tracks and may differ from complete county or municipal records. Across the 285 closings with usable living area, the middle half sold between $173 and $229 per square foot.
Figures last updated September 6, 2026 from closings Resideline tracked.
Median home price in Grayslake, IL (September 2026)
The median home price in Grayslake is $370,000, measured across the 292 closed sales Resideline tracked over the last 12 months. The middle half of those sales closed between $287,000 and $449,900.
Where Grayslake sale prices land
Medians hide the shape of a market. The distribution above covers the closed sales Resideline tracked in Grayslake over the last 12 months that carry a usable sale date, trimmed to the 5th through 95th percentile, with the middle half of sales closing between $287,000 and $449,900. Among the 91 Illinois markets with a published band, Grayslake's middle-half spread ($287,000 to $449,900) ranks 19th from the narrowest. Where your target property sits inside that spread matters more than the citywide median.
How long a sale takes here
- •Listed to under contract: a median of 25 days, across 133 Grayslake closings Resideline tracked in the last 12 months
- •Contract to closing: a median of 12 days, across 40 Grayslake closings Resideline tracked in the last 12 months
The Grayslake angle
Grayslake produced 292 tracked closings over 12 months, a median closed sale price of $370,000, and a middle half of sales between $287,000 and $449,900. In a market that clusters like this, the median is a defensible opening level and the argument moves to whether the subject is a normal Grayslake sale. Make that argument with closed sales that share the subject's size and condition, and keep any adjustment you cannot evidence out of the number.
From market read to offer price
A market read is the backdrop. The decision still comes down to one property and one number: what it is actually worth and what you should pay. Every Resideline report opens with this same market snapshot for the subject's exact ZIP code, then gives you the property's value, the sold comps behind it, and a market rent estimate. Pricing a specific deal? The free ARV calculator and rental property calculator run the numbers in about a minute.
And we show our work. Every estimate is frozen while the home is for sale and graded against the real closing price after it sells. See the live accuracy dashboard for the receipts, or read how the Area Market Snapshot works.
Run any Grayslake address through Resideline and you will see the local market and the property's value together, in one report.
Cite this
Using these numbers? Please cite the source and the sample size:
Source: Resideline Market Watch
Market: Grayslake, IL
Geography: incorporated municipality, Census place 1731121
Data updated: September 2026
Analysis period: last 12 months
Tracked closings: 292
Median sold price: $370,000
Median sold $/sqft: $199 (285 qualifying)
https://resideline.com/blog/grayslake-il-housing-market
Writing about this market? Paste this into your post:
<a href="https://resideline.com/blog/grayslake-il-housing-market">
<img src="https://resideline.com/images/embed/grayslake-il.png" alt="Grayslake, IL home sale price distribution, last 12 months" width="1000" style="max-width:100%;height:auto">
</a>
<p>Source: <a href="https://resideline.com/blog/grayslake-il-housing-market">Resideline Market Watch</a></p>
The local market statistics in this report are calculated from closed sales tracked by Resideline. Transaction coverage may differ from complete county or municipal records.
Every local market figure on this page is computed from closed sales Resideline tracked in Grayslake over the last 12 months, and is refreshed when the data is. The closings we track within the Grayslake city limits are not limited to listing-service sales: they also include foreclosure deeds, estate and family transfers, and other off-market sales that portal medians exclude, which is why 18% of the 292 closings in this window never appeared on a listing service, and the median of MLS-listed sales alone matched it at $370,000.
Frequently Asked Questions
What is the median home price in Grayslake?
The median sold price in Grayslake over the last 12 months is $370,000, measured across 292 closings Resideline tracked.
How many homes sold in Grayslake last month?
Resideline tracked 35 closed sales in Grayslake in August 2026, out of 292 closings tracked over the last 12 months. These are tracked samples of market activity, not official county totals.
What is the typical sale price range in Grayslake?
The middle half of Grayslake sales over the last 12 months closed between $287,000 and $449,900, with a median of $370,000.
What is the typical price per square foot in Grayslake?
Among qualifying Grayslake closings Resideline tracked over the last 12 months, the median sold price per square foot was $199, measured across 285 sales with usable living area. Median is used rather than average because outliers distort the mean.
Where should I spend my time on a Grayslake valuation?
On classification rather than on level. The middle half of tracked sales covers less ground here than in most markets we track, so the general price level is not really in dispute. What is in dispute is whether your property behaves like an ordinary local closing, and that is answered by comparing it against sales that share its characteristics. Adjustments you can point to in a closed sale belong in the number; adjustments you merely believe belong in a note beside it.
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