Market report · August 2026
Southampton housing market report
Suffolk County · Data as of October 2, 2026 · Based on OneKey® MLS · Updated monthly
12-month median price about flat; inventory down 17.5%; buyer's market
Market temperature · months of supply
9.5 months · buyer's market
Median sale price
$3.32M
Last year $1.85M · +79.3%
Closed sales
8
Last year 7 · +14.3%
Homes for sale
85
Last year 103 · −17.5%
Avg. days on market
125 days
Last year 202 days
% of original list
92.7%
Last year 83.2%
New listings
18
Last year 19 · −5.3%
Month and last 12 months
| Metric | August 2025 | August 2026 | Change | Thru 08/2025 | Thru 08/2026 | Change |
|---|---|---|---|---|---|---|
| New listings | 19 | 18 | −5.3% | 216 | 169 | −21.8% |
| Closed sales | 7 | 8 | +14.3% | 98 | 107 | +9.2% |
| Avg. days on market | 202 | 125 | −38.1% | 138 | 153 | +10.9% |
| Median sale price | $1,850,000 | $3,317,500 | +79.3% | $2,386,500 | $2,400,000 | +0.6% |
| % of original list | 83.2% | 92.7% | +11.4% | 90.7% | 90.8% | +0.1% |
| Homes for sale / Avg. homes for sale | 103 | 85 | −17.5% | 103 | 88 | −14.6% |
From 2013-01 to 2026-08, the rolling 12-month median moved from $430K to $2.4M.
Highlights
- 10-year median +190.9%
- 7% sold above original list in 12 months
- $3M–$5M is the busiest band · 24% of sales
For sale today
Southampton Single-family 88 homes
12-month median price up 58.4%; inventory up 100.0%; balanced market
Market temperature · months of supply
6 months · balanced market
Median sale price
—
Last year $1.09M
Closed sales
0
Last year 1 · −100.0%
Homes for sale
4
Last year 2 · +100.0%
Avg. days on market
—
Last year 20 days
% of original list
—
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 | — | 12 | 7 | −41.7% |
| Closed sales | 1 | 0 | −100.0% | 5 | 8 | +60.0% |
| Avg. days on market | 20 | — | — | 24 | 123 | +412.5% |
| Median sale price | $1,089,000 | — | — | $1,089,000 | $1,725,000 | +58.4% |
| % of original list | 100.0% | — | — | 98.5% | 94.5% | −4.1% |
| Homes for sale / Avg. homes for sale | 2 | 4 | +100.0% | 4 | 1 | −75.0% |
From 2013-01 to 2026-08, the rolling 12-month median moved from $480K to $1.73M.
For sale today
Southampton Condo 4 homes
Seller's market
Market temperature · months of supply
0 months · seller's market
Median sale price
—
Last year —
Closed sales
0
Last year 0
Homes for sale
0
Last year 0
Avg. days on market
—
Last year —
% of original list
—
Last year —
New listings
0
Last year 0
Month and last 12 months
| Metric | August 2025 | August 2026 | Change | Thru 08/2025 | Thru 08/2026 | Change |
|---|---|---|---|---|---|---|
| New listings | 0 | 0 | — | 0 | 1 | — |
| Closed sales | 0 | 0 | — | 0 | 1 | — |
| Avg. days on market | — | — | — | — | 23 | — |
| Median sale price | — | — | — | — | $445,000 | — |
| % of original list | — | — | — | — | 96.9% | — |
| Homes for sale / Avg. homes for sale | 0 | 0 | — | 0 | 0 | — |
From 2014-02 to 2026-08, the rolling 12-month median moved from $285K to $445K.
For sale today
Southampton Co-op 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.