Market report · August 2026
Mastic Beach 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 up 7.1%; balanced market
Market temperature · months of supply
4.6 months · balanced market
Median sale price
$450K
Last year $446K · +0.8%
Closed sales
17
Last year 18 · −5.6%
Homes for sale
60
Last year 56 · +7.1%
Avg. days on market
40 days
Last year 58 days
% of original list
101.1%
Last year 98.1%
New listings
28
Last year 21 · +33.3%
Month and last 12 months
| Metric | August 2025 | August 2026 | Change | Thru 08/2025 | Thru 08/2026 | Change |
|---|---|---|---|---|---|---|
| New listings | 21 | 28 | +33.3% | 255 | 264 | +3.5% |
| Closed sales | 18 | 17 | −5.6% | 191 | 156 | −18.3% |
| Avg. days on market | 58 | 40 | −31.0% | 59 | 47 | −20.3% |
| Median sale price | $446,250 | $450,000 | +0.8% | $435,000 | $450,000 | +3.4% |
| % of original list | 98.1% | 101.1% | +3.1% | 100.1% | 101.0% | +0.9% |
| Homes for sale / Avg. homes for sale | 56 | 60 | +7.1% | 54 | 52 | −3.7% |
From 2013-01 to 2026-08, the rolling 12-month median moved from $115K to $450K.
Highlights
- 10-year median +291.3%
- 56% sold above original list in 12 months
- $250K–$500K is the busiest band · 69% of sales
For sale today
Mastic Beach Single-family 59 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.