Market report · August 2026
Central Islip housing market report
Suffolk County · Data as of October 2, 2026 · Based on OneKey® MLS · Updated monthly
12-month median price up 3.4%; inventory about flat; seller's market
Market temperature · months of supply
2.9 months · seller's market
Median sale price
$590K
Last year $610K · −3.3%
Closed sales
13
Last year 14 · −7.1%
Homes for sale
37
Last year 38 · −2.6%
Avg. days on market
43 days
Last year 38 days
% of original list
103.1%
Last year 103.4%
New listings
12
Last year 23 · −47.8%
Month and last 12 months
| Metric | August 2025 | August 2026 | Change | Thru 08/2025 | Thru 08/2026 | Change |
|---|---|---|---|---|---|---|
| New listings | 23 | 12 | −47.8% | 220 | 224 | +1.8% |
| Closed sales | 14 | 13 | −7.1% | 147 | 152 | +3.4% |
| Avg. days on market | 38 | 43 | +13.2% | 44 | 42 | −4.5% |
| Median sale price | $610,000 | $590,000 | −3.3% | $580,000 | $600,000 | +3.4% |
| % of original list | 103.4% | 103.1% | −0.3% | 102.8% | 102.1% | −0.7% |
| Homes for sale / Avg. homes for sale | 38 | 37 | −2.6% | 36 | 34 | −5.6% |
From 2013-01 to 2026-08, the rolling 12-month median moved from $144K to $600K.
Highlights
- 10-year median +166.7%
- 67% sold above original list in 12 months
- $500K–$750K is the busiest band · 78% of sales
For sale today
Central Islip Single-family 34 homes
12-month median price up 4.3%; inventory down 8.3%; seller's market
Market temperature · months of supply
2 months · seller's market
Median sale price
$527K
Last year $465K · +13.4%
Closed sales
4
Last year 3 · +33.3%
Homes for sale
11
Last year 12 · −8.3%
Avg. days on market
31 days
Last year 16 days
% of original list
98.0%
Last year 102.4%
New listings
7
Last year 11 · −36.4%
Month and last 12 months
| Metric | August 2025 | August 2026 | Change | Thru 08/2025 | Thru 08/2026 | Change |
|---|---|---|---|---|---|---|
| New listings | 11 | 7 | −36.4% | 75 | 80 | +6.7% |
| Closed sales | 3 | 4 | +33.3% | 69 | 67 | −2.9% |
| Avg. days on market | 16 | 31 | +93.8% | 38 | 39 | +2.6% |
| Median sale price | $465,000 | $527,250 | +13.4% | $465,000 | $485,000 | +4.3% |
| % of original list | 102.4% | 98.0% | −4.3% | 101.7% | 100.2% | −1.5% |
| Homes for sale / Avg. homes for sale | 12 | 11 | −8.3% | 10 | 10 | 0.0% |
From 2013-01 to 2026-08, the rolling 12-month median moved from $210K to $485K.
Highlights
- 10-year median +101.2%
- 53% sold above original list in 12 months
- $250K–$500K is the busiest band · 52% of sales
For sale today
Central Islip Condo 10 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.