Market Insights · Northbrook
Northbrook Real Estate Market Statistics
What Northbrook's housing market is doing now — prices, supply and how quickly houses sell — with what it means if you're buying or selling.
At a glance
The numbers, twelve months to September 2026
Source: MRED via InfoSparks, single-family detached, Northbrook. Condominium and townhouse, age-of-homes and new-construction figures: MRED closed sales, October 2025–September 2026. Calendar-2025 price bands: MRED closed sales, January–December 2025.
What the numbers say
Northbrook this month, in plain terms
Is Northbrook a seller's market or a buyer's market?
A seller's market. At September's pace it would take about 1.9 months to sell every detached house listed in Northbrook. Under four months generally favors sellers; above six favors buyers. Since 2021, supply has stayed between about one and two and a half months. Owners listed 506 detached houses in the last twelve months, against 537 the year before, and at the end of September there were 51 detached houses for sale, about the same as a year earlier. Between 2016 and 2019, Northbrook carried between about three and eight months of supply.
Are prices going up?
Yes. The twelve-month median for a detached Northbrook house reached $900,000 in September 2026, against $825,000 a year earlier, about 9% higher and level with the highest this measure has been. Calendar 2025's median ($850,000) was also about 10% above 2024's ($775,000). It describes what sold; it does not mean every Northbrook house appreciated by 9%. The longer direction is clear: the same measure was $575,000 in September 2019.
How fast are houses selling?
Over the twelve months to September, the median Northbrook house went under contract six days after listing and sold for 100.2% of its last asking price. It took an average of thirteen showings to reach a contract, against fifteen a year earlier and twenty at times in late 2023 and early 2024. Our own analysis of 1,204 Northbrook houses that went under contract between January 2023 and September 2026 found that 59% did so within eight days, but about one in five took more than three weeks and about one in thirteen took more than two months. A quick median does not guarantee a quick sale.
What does this mean if you're selling?
Supply is low, but price to the most comparable recent sales near yours, not to the village median. A Northbrook median mixes very different houses, from postwar ranches and split-levels to new construction. Timing matters at the margin: in our 2023–2026 analysis, April and June listings had the strongest observed results, and autumn listings the weakest. See the Northbrook timing study.
What does this mean if you're buying?
There is a little more choice than in some neighboring towns: 51 detached houses at the end of September, and more came to market this summer than usual. Be ready before the right one appears, with financing in place and a clear sense of value. Condominiums and townhouses are about four in ten of Northbrook's sales and have their own figures below.
Coming Soon & Private Exclusives
Before homes reach the active market
Not every Northbrook sale starts as an active listing. Coming Soon homes are marketed before their broader public-market launch, giving buyers an earlier opportunity to learn about a property. Buyers can express interest and make offers during this stage; whether a seller considers an offer before the broader launch is up to the seller. Compass Private Exclusives are not publicly marketed while they are offered as Private Exclusives; some later come to the open market. Neither guarantees access to a particular home.
This year vs. a typical year
Is 2026 running hotter or cooler than usual?
Each month of 2026 so far, set against the same month’s average for 2023 to 2025. When a bigger share of the available houses goes under contract than usual, buyers are outpacing supply.
1 · How many houses were available, and how many went under contract
Homes available, 2026Went under contract, 2026Typical for that month (2023–2025 average)
2 · Showings per listing: how many showings each house drew that month
2026Typical for that month (2023–2025 average)
Monthly figures
| Month | Homes available, 2026 | Under contract, 2026 | Share under contract, 2026 (typical) | Showings per listing, 2026 (typical) |
|---|---|---|---|---|
| January | 63 | 23 | 37% (25%) | 8.1 (10.3) |
| February | 68 | 22 | 32% (37%) | 10.2 (13.4) |
| March | 77 | 34 | 44% (39%) | 7.7 (13.0) |
| April | 87 | 32 | 37% (37%) | 9.9 (12.3) |
| May | 97 | 50 | 52% (37%) | 12.1 (10.4) |
| June | 90 | 34 | 38% (35%) | 8.2 (8.3) |
| July | 88 | 29 | 33% (29%) | 7.1 (7.0) |
| August | 91 | 23 | 25% (27%) | 6.6 (7.1) |
| September | 107 | 27 | 25% (26%) | 6.7 (6.9) |
| October | – | – | – (29%) | – (7.5) |
| November | – | – | – (24%) | – (8.0) |
| December | – | – | – (27%) | – (6.3) |
Through September, 2026 has brought slightly more Northbrook houses to market than a typical year, and slightly more contracts. From January through September, 429 detached houses came to market, against a typical 405 for those months, and 274 went under contract, against a typical 264. The share of available houses that went under contract was above typical in five of the nine months, most of all in May, when 50 of 97 went under contract (52%, against a typical 37%), and at or slightly below typical in the others. Late summer looked different: by September, 107 houses were available against a typical 88, and the share going under contract was close to normal. Showings per listing ran above typical only in May and July.
Northbrook, detached houses. 2026 figures through September 2026; typical = the 2023, 2024 and 2025 average for the same month. Homes available: houses for sale at the end of the previous month plus new listings that month. Under contract: pending sales by contract month. Showings per listing: showing data from ShowingTime, counting only showings scheduled through ShowingTime. Source: MRED via InfoSparks, read 5 Oct 2026. Updated monthly.
Live charts
The trend, back to 2016
These charts update automatically from MRED, so they may show a newer month than the text above.
Median sale price
Northbrook, single-family detached. Each point is 12 months of activity. Source: MRED via InfoSparks, updated automatically. This chart starts in 2016.
The median stayed between about $532,000 and $590,000 from 2016 through 2020, passed $800,000 in 2025 and reached $900,000 in 2026, its highest point on this chart.
Months supply of homes for sale
Northbrook, single-family detached. Each point is one month of activity. Source: MRED via InfoSparks, updated automatically. This chart starts in 2016.
How long it would take to sell everything listed at the current pace. Northbrook carried about three to eight months of supply from 2016 to 2019 and has stayed between one and two and a half months since 2021.
Average showings to contract
Northbrook, single-family detached. Each point is 12 months of activity. Source: MRED via InfoSparks, updated automatically. This chart starts in 2016.
Fewer showings per contract means buyers decide faster. Northbrook now runs at about thirteen, the lowest since 2021, against twenty at times in late 2023 and early 2024.
New listings
Northbrook, single-family detached. Each point is one month. Source: MRED via InfoSparks, updated automatically. This chart starts in 2016.
How many houses come to market each month, with a clear spring peak. The last twelve months brought 506 new listings, down from 537.
Condominiums and townhouses
The attached market, twelve months to September 2026
About four in ten Northbrook sales are condominiums and townhouses (246 of 569 over these twelve months). They sell at very different prices from detached houses, so they get their own figures.
Source: MRED closed sales, October 2025–September 2026, condominiums and townhouses in Northbrook. The live charts above cover detached houses only.
Calendar 2025
Where the sales happened
Every closed sale of a house, condominium or townhouse in Northbrook in 2025. Vacant land excluded. Refreshed each January.
595 sales in all: 350 detached houses (median $850,000) and 245 condominiums and townhouses (median $440,000). Most sales under $600,000 were condominiums and townhouses; detached sales spread across every band. Source: MRED closed sales, January–December 2025.
Age of homes sold
When the houses that sold were built
Detached houses sold in the twelve months to September 2026, by the decade they were built.
The 1960s account for more of the houses that sold than any other decade, 88 of 322, and the 1950s through the 1970s together for about two in three. Only five were built before 1940. About one in six was built in 2000 or later. Year built describes when a house was first constructed; it says little about its condition, renovations, additions or how it compares with any other house.
Year built as recorded in the MLS listing. 1 detached sale listed the year as unknown and is excluded. A house rebuilt on an older lot shows its new construction year. Source: MRED closed sales, October 2025–September 2026. Refreshed monthly.
New construction
What sold as new construction in Northbrook
Newly built detached houses that closed in the twelve months to September 2026, treated as their own segment of the market.
Sixteen of the 323 detached houses that sold in Northbrook in the twelve months to September 2026 were new construction, at a median of just under $2 million. New construction is its own market; this median is not a guide to what an older Northbrook house will sell for.
New construction means a detached house marked as new construction in the MLS listing. Source: MRED closed sales, October 2025–September 2026. Refreshed monthly.
Method
How these numbers are calculated
- Source. MRED, the multiple listing service for northern Illinois, via its InfoSparks reporting tool.
- What's counted. Single-family detached houses in Northbrook unless a figure says otherwise. Condominiums and townhouses have their own section, and the calendar-2025 price bands include them. Vacant land and rentals are left out.
- Twelve-month figures. Price and showings use a rolling twelve months, so a few unusual sales in one month don't swing the picture.
- Volume. Northbrook has about three hundred to three hundred and fifty detached sales a year, enough for monthly figures to be meaningful, though single months can still move.
- Year built. The age-of-homes section uses the year built recorded in each MLS listing; listings marked unknown are left out.
- Median first. The median is the middle sale. We show it ahead of the average, which a few very large sales can pull up.
- New construction. A detached house marked as new construction in the MLS listing. Shown as its own segment, with a median only when there are at least five sales, and never compared with older homes.
- This year vs. a typical year. Each month of the current year is compared with the average of the same month in the last three full years. “Homes available” is the houses for sale at the end of the previous month plus that month’s new listings, so each house counts once whether it went under contract, stayed on the market or was withdrawn.
- Updates. The text and figures are refreshed monthly. The live charts update themselves and may show a newer month than the text.
Keep reading
More on Northbrook
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What listing month showed for price and speed, 2023 to 2026.
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Search every active Northbrook listing on the MLS.
Search HomesMarket statistics for other North Shore towns:
What would your Northbrook house sell for?
The market figures describe Northbrook as a whole. A valuation looks at your house and the sales around it.
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