Market report · August 2026
Stony Brook housing market report
Suffolk County · Data as of October 2, 2026 · Based on OneKey® MLS · Updated monthly
12-month median price up 7.0%; inventory down 10.0%; seller's market
Market temperature · months of supply
1.7 months · seller's market
Median sale price
$835K
Last year $758K · +10.2%
Closed sales
20
Last year 22 · −9.1%
Homes for sale
18
Last year 20 · −10.0%
Avg. days on market
17 days
Last year 25 days
% of original list
107.9%
Last year 101.3%
New listings
10
Last year 14 · −28.6%
Month and last 12 months
| Metric | August 2025 | August 2026 | Change | Thru 08/2025 | Thru 08/2026 | Change |
|---|---|---|---|---|---|---|
| New listings | 14 | 10 | −28.6% | 158 | 154 | −2.5% |
| Closed sales | 22 | 20 | −9.1% | 132 | 130 | −1.5% |
| Avg. days on market | 25 | 17 | −32.0% | 29 | 33 | +13.8% |
| Median sale price | $757,500 | $835,000 | +10.2% | $747,500 | $800,000 | +7.0% |
| % of original list | 101.3% | 107.9% | +6.5% | 101.7% | 102.8% | +1.1% |
| Homes for sale / Avg. homes for sale | 20 | 18 | −10.0% | 16 | 16 | 0.0% |
From 2013-01 to 2026-08, the rolling 12-month median moved from $375K to $800K.
Highlights
- 10-year median +105.0%
- 67% sold above original list in 12 months
- $750K–$1M is the busiest band · 59% of sales
For sale today
Stony Brook Single-family 24 homes
12-month median price up 21.7%; seller's market
Market temperature · months of supply
2.8 months · seller's market
Median sale price
$481K
Last year $550K · −12.5%
Closed sales
1
Last year 2 · −50.0%
Homes for sale
4
Last year 0
Avg. days on market
11 days
Last year 52 days
% of original list
104.8%
Last year 100.0%
New listings
2
Last year 0
Month and last 12 months
| Metric | August 2025 | August 2026 | Change | Thru 08/2025 | Thru 08/2026 | Change |
|---|---|---|---|---|---|---|
| New listings | 0 | 2 | — | 26 | 19 | −26.9% |
| Closed sales | 2 | 1 | −50.0% | 24 | 17 | −29.2% |
| Avg. days on market | 52 | 11 | −78.8% | 46 | 29 | −37.0% |
| Median sale price | $550,000 | $481,000 | −12.5% | $439,500 | $535,000 | +21.7% |
| % of original list | 100.0% | 104.8% | +4.8% | 102.5% | 101.7% | −0.8% |
| Homes for sale / Avg. homes for sale | 0 | 4 | — | 2 | 2 | 0.0% |
From 2013-01 to 2026-08, the rolling 12-month median moved from $230K to $535K.
Highlights
- 10-year median +94.5%
- 59% sold above original list in 12 months
For sale today
Stony Brook Condo 1 homes
Curious what your home is worth?
Source: OneKey® MLS, calculated by Homix following OneKey's market report method; figures may differ slightly from OneKey's own reports. Prices do not account for concessions or down-payment assistance; small samples can make percent changes look extreme.