Photo: DanTD · CC BY-SA 3.0165 homes sold in Islip in the last year, at a typical $680K
About one sale in 5 is a condo. Below: what each kind of home sells for, what your budget buys, the best months to buy, how hard you’ll have to bid, and a shortcut to every site where Islip homes are listed.
Every place Islip homes are listed, in one stop
We don’t copy listings: the agents’ sites have the photos and the latest price changes. Set what you want once and we open each site already filtered to Islip.
For sale
Rent
New, land & open houses
Links open the listing sites; TownRatings isn’t paid for them and doesn’t rank one above another. Rentals and government-owned homes come from sources outside the MLS.
20% of Islip’s sales are condos, at $445K less than a house
131 houses and 33 condos sold in the year to May 2026. Houses draw more bidding wars.
typical sale · 131 sold in 12 months
- Per square foot
- $396NY $316
- Days to sell
- 34
- Sold over asking
- 68%
- Listings with a price cut
- 17%
typical sale · 33 sold in 12 months
- Per square foot
- $345NY $832
- Days to sell
- 35
- Sold over asking
- 61%
- Listings with a price cut
- 30%
Multi-family (2–4 units): 1 sold, typical $580K
Too few sales in 12 months for reliable figures.
About as many homes sell as usual, at 2.2 times the 2016 price
165 sales in the last year, against 247 in 2016 and a low of 117 in 2012. The typical sale went from $308K in 2016 to $680K.
Source: Redfin Data Center, MLS sales. Typical price and $/sq ft are the monthly medians, weighted by sales.
What $700K buys in Islip
Check a listing against what Islip homes sold for
Against the town’s median price per square foot over the last 12 months. A rough check: condition, lot and location within town move a price more than this can see.
Bidding wars in Islip are more common than before the pandemic, but 39% fewer homes come up for sale
We read every month of Islip’s home sales since 2012 so you don’t have to. Each figure covers 12 months, because a single month in a town is too few sales to mean much. Latest: the year to May 2026, 165 sales.
If you’re buying in Islip
- Shop in March. It brings about 22 new listings a month, close to the busiest month, with fewer bidding wars (32% over asking).
- Some room to negotiate. 21% of listings cut their price, about as many as before the pandemic.
- Expect to bid over asking. Buyers paid 103% of the list price on average; 66% paid over.
- You’ll usually have time. Only 9% of homes go under contract within two weeks; the typical one takes 34 days.
Summer brings both the most homes and the most bidding wars
July has the most new listings (about 24 a month), and the most competition: 53% close over asking. March offers nearly as much choice with fewer homes bid up (32%). January has the least competition (30%).
Averages for each calendar month, 2015 on.
Nearly as heated as 2021, and hotter than New York
| Islip now | 2017–19 | 2021 peak | NY now | |
|---|---|---|---|---|
| Sold over askingShare of sales that closed above the list price | 66% | 32% | 56% | 41% |
| Gone within two weeksShare of homes under contract within 14 days | 9% | 8% | 12% | 26% |
| Listings with a price cutShare of homes for sale that cut their price | 21% | 18% | 14% | 20% |
| Price paid vs. askingAverage sale price ÷ list price | 103% | 98.8% | 102.2% | 101% |
| Days to sellMedian days from listing to contract | 34 | 48 | 28 | 41 |
32 homes for sale on a typical day
That’s 1.9 times the 2023 low (17), 39% fewer than in 2017–19 and well under 2015’s 127.
1 in 5 listings has cut its price
21% in the last year, against 18% in 2017–19 and 20% across New York.
Since 2019, houses are up 79%, condos 63%
A house typically sold for $722K in the last year (131 sales), a condo for $277K (33).
Median sale price, weighted by sales each month. Years with fewer than 4 sales of a type are left out.
Islip ranks 64th of 362 busy New York markets for bidding wars
Share of sales over asking in the last year, among towns with 60 or more sales. Islip is one of the state’s hottest markets.
Source: Redfin Data Center, city market tracker, January 2012 to May 2026 (MLS sales, not seasonally adjusted). Ratios are weighted by homes sold; price cuts by homes for sale.
Five things worth knowing
New listings in July
The month with the most choice. December has the fewest, about 9.
Best time to buySchools
The schools grade for Islip, from test results, graduation and how much students grow.
Schools in IslipCheck the flood map
Flood insurance isn’t in a standard policy, and lenders require it in FEMA flood zones. Check the address before you make an offer.
Natural hazardsLook up any property
Assessed value, lot size and every past sale of a home you’re eyeing are public, at the town or county assessor and the registry of deeds.
Brightwaters sells for less a square foot
The busier markets within 25 miles of Islip, by what sold. Prices, taxes and how far a paycheck goes next door are on Cost of living.
| Sold | Typical sale | $/sq ft | Over asking | Days to sell | |
|---|---|---|---|---|---|
| Islip | 165 | $680K | $385 | 66% | 34 |
| Bay Shore | 147 | $607K | $410 | 62% | 29 |
| East Islip | 103 | $798K | $434 | 72% | 27 |
| West Bay Shore | 59 | $782K | $421 | 63% | 40 |
| Islip Terrace | 36 | $632K | $401 | 67% | 31 |
| North Great River | 26 | $728K | $387 | 85% | 27 |
| Brightwaters | 20 | $877K | $343 | 50% | 59 |
Redfin Data Center, June 2025 to May 2026. Towns with fewer than 20 sales are left out, and Redfin doesn’t report every town separately.
Post your home to Islip, free
Selling it yourself, renting out an apartment or looking for a roommate? Post it to Islip. People who follow the town see it, and so do people comparing Islip with their own town. No commission, no listing fee.
Questions about buying a home in Islip
What do homes sell for in Islip, NY?
165 homes sold in the year to May 2026 at a typical $680K, $385 a square foot. Houses sold for about $722K, condos for about $277K.
Is Islip a buyer’s or seller’s market?
A seller’s market: 24 homes were for sale in May 2026 and 9 sold, about 2.7 months of supply. Buyers paid 103% of asking on average, and 21% of listings cut their price.
When is the best time to buy in Islip?
July brings the most new listings. The sales history shows which months have fewer bidding wars.
Where can I see homes for sale in Islip?
Zillow, Redfin, Realtor.com and Homes.com all carry Islip’s MLS listings; the search links above open each one filtered to Islip.
Sales, prices, days on market and listings: Redfin Data Center (MLS, monthly, not seasonally adjusted). Property tax rate: Census American Community Survey. Two-bedroom rent: HUD Fair Market Rent. Typical home value: Zillow Home Value Index. Schools grade: TownRatings (how grades work).