Market report · August 2026
Shelter Island housing market report
Suffolk County · Data as of October 2, 2026 · Based on OneKey® MLS · Updated monthly
12-month median price up 6.2%; inventory up 6.7%; buyer's market
Market temperature · months of supply
20.2 months · buyer's market
Median sale price
$1.53M
Last year $2.5M · −38.8%
Closed sales
2
Last year 1 · +100.0%
Homes for sale
32
Last year 30 · +6.7%
Avg. days on market
277 days
Last year 233 days
% of original list
82.9%
Last year 75.8%
New listings
1
Last year 6 · −83.3%
Month and last 12 months
| Metric | August 2025 | August 2026 | Change | Thru 08/2025 | Thru 08/2026 | Change |
|---|---|---|---|---|---|---|
| New listings | 6 | 1 | −83.3% | 46 | 36 | −21.7% |
| Closed sales | 1 | 2 | +100.0% | 24 | 19 | −20.8% |
| Avg. days on market | 233 | 277 | +18.9% | 146 | 208 | +42.5% |
| Median sale price | $2,500,000 | $1,530,000 | −38.8% | $1,737,500 | $1,845,000 | +6.2% |
| % of original list | 75.8% | 82.9% | +9.4% | 87.6% | 84.8% | −3.2% |
| Homes for sale / Avg. homes for sale | 30 | 32 | +6.7% | 29 | 24 | −17.2% |
From 2013-01 to 2026-08, the rolling 12-month median moved from $551K to $1.84M.
Highlights
- 10-year median +104.4%
- 0% sold above original list in 12 months
For sale today
Shelter Island Single-family 30 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.