Your town. A clearer picture.
How’s Town of Islip doing?
What are homes selling for, and how long are offers taking? Start with the local numbers.
This report covers single-family houses. Looking for condominiums? Read the separate Town of Islip report ↗ Looking for co-op apartments? Read the separate Town of Islip report ↗
Monthly editionsSeptember 2026 · Single-family homes
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- Average sale price
- $844,944
- Median sale price
- $715,000
- Average DOMDays on market
- 32 days
- Median days to an offer
- 22
- Completed sales
- 161
- Month-end homes for sale
- 410
161 completed sales. The homes that happened to sell affect the averages. These figures do not value a particular house.
The month’s completed sale prices
Highest completed sale
$5,249,000
Lowest completed sale
$487,000
Area-wide reported MLS sales, not all our team’s transactions.
Where does your home fit?
For the MLS City/Town reporting area named Islip, 161 single-family homes were reported closed in September. The median completed-sale price was $715,000, up 5.5% from a year earlier, while the average was $844,944, up 11.1%. The source reported a median 22 days to an accepted offer and 410 homes for sale at month-end. This is separate from Islip hamlet or postal-area figures. MLS location labels may differ from municipal boundaries, and the mix of homes can move the average differently from the median.
Have questions about your own place around Islip township? Give me a call. Michelle and I can help you focus on the neighborhood sales and home details that make relevant comparisons.
Town of Islip and Suffolk County, side by side.
September 2026 · Single-family homes
Same month and property type. A county covers a wider mix of homes.
September 2026 · Single-family homes
Same month and property type. A county covers a wider mix of homes.
| Measure | This month | Year over year |
|---|---|---|
| Average sale price | $844,944 | +11.1% |
| Median sale price | $715,000 | +5.5% |
| Average DOM — Days on market | 32 | -17.9% |
| Median days to an offer | 22 | -4.3% |
| Completed sales | 161 | +3.2% |
| Month-end homes for sale | 410 | -5.3% |
Your home. Your questions.
Curious what your town’s doing?
Call, text or email us.
Thinking about selling, wondering what your home is worth, or working through a real estate question? You don’t need to have it all figured out. We’re happy to help.
Kevin Collins & Michelle Bergin
Kevin Collins Real Estate Team · Signature Premier Properties
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Open or save the Town of Islip snapshot ↗
The report above gives the definitions and matching county comparison.
What’s behind the numbers?
Source: OneKey MLS, InfoSparks / MarketStats by ShowingTime and reconciled OneKey Matrix completed sales. Source checks: 2026-10-23 through 2026-10-23. Reporting month: September 2026. Single-family homes. Exact source geography: City/Town: Islip.
Average means arithmetic mean; median is the middle completed-sale price. Days to an accepted offer use the source’s separate pending-data cohort, not time to closing. Inventory means active homes at month-end, not today’s listings. All prices, sizes, bedroom counts, years built and sale types are included within the stated property type. High and low are completed prices for this period and geography. A change in sales mix can change an average or median without the same change in every house. No home-specific appraisal or automated valuation is provided.
Information is deemed reliable but not guaranteed and may be revised. About OneKey’s market-statistics tools ↗