Market report · August 2026
Sag Harbor housing market report
Suffolk County · Data as of October 2, 2026 · Based on OneKey® MLS · Updated monthly
12-month median price up 8.5%; inventory down 45.1%; buyer's market
Market temperature · months of supply
6.3 months · buyer's market
Median sale price
$4.28M
Last year $1.31M · +226.1%
Closed sales
6
Last year 2 · +200.0%
Homes for sale
28
Last year 51 · −45.1%
Avg. days on market
257 days
Last year 464 days
% of original list
83.7%
Last year 64.5%
New listings
4
Last year 12 · −66.7%
Month and last 12 months
| Metric | August 2025 | August 2026 | Change | Thru 08/2025 | Thru 08/2026 | Change |
|---|---|---|---|---|---|---|
| New listings | 12 | 4 | −66.7% | 110 | 84 | −23.6% |
| Closed sales | 2 | 6 | +200.0% | 63 | 53 | −15.9% |
| Avg. days on market | 464 | 257 | −44.6% | 125 | 149 | +19.2% |
| Median sale price | $1,312,500 | $4,280,000 | +226.1% | $2,050,000 | $2,225,000 | +8.5% |
| % of original list | 64.5% | 83.7% | +29.8% | 89.5% | 90.9% | +1.6% |
| Homes for sale / Avg. homes for sale | 51 | 28 | −45.1% | 55 | 41 | −25.5% |
From 2013-01 to 2026-08, the rolling 12-month median moved from $415K to $2.23M.
Highlights
- 10-year median +191.8%
- 13% sold above original list in 12 months
- $1.5M–$2M is the busiest band · 26% of sales
For sale today
Sag Harbor Single-family 30 homes
This month's market
Median sale price
—
Last year —
Closed sales
0
Last year 0
Homes for sale
1
Last year 0
Avg. days on market
—
Last year —
% of original list
—
Last year —
New listings
1
Last year 0
Month and last 12 months
| Metric | August 2025 | August 2026 | Change | Thru 08/2025 | Thru 08/2026 | Change |
|---|---|---|---|---|---|---|
| New listings | 0 | 1 | — | 1 | 1 | 0.0% |
| Closed sales | 0 | 0 | — | 1 | 0 | −100.0% |
| Avg. days on market | — | — | — | 110 | — | — |
| Median sale price | — | — | — | $1,950,000 | — | — |
| % of original list | — | — | — | 90.7% | — | — |
| Homes for sale / Avg. homes for sale | 0 | 1 | — | 1 | 0 | −100.0% |
From 2020-07 to 2026-02, the rolling 12-month median moved from $1.8M to $1.95M.
For sale today
Sag Harbor Condo 1 homes
Inventory down 100.0%; 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 1 · −100.0%
Avg. days on market
—
Last year —
% of original list
—
Last year —
New listings
0
Last year 1 · −100.0%
Month and last 12 months
| Metric | August 2025 | August 2026 | Change | Thru 08/2025 | Thru 08/2026 | Change |
|---|---|---|---|---|---|---|
| New listings | 1 | 0 | −100.0% | 2 | 0 | −100.0% |
| Closed sales | 0 | 0 | — | 0 | 1 | — |
| Avg. days on market | — | — | — | — | 26 | — |
| Median sale price | — | — | — | — | $1,250,000 | — |
| % of original list | — | — | — | — | 96.9% | — |
| Homes for sale / Avg. homes for sale | 1 | 0 | −100.0% | 1 | 0 | −100.0% |
For sale today
Sag Harbor Co-op 0 homes
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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.