Photo: Americasroof · CC BY-SA 3.042 homes sold in Islandia in the last year, at a typical $627K
Houses and condos split the market almost evenly. 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 Islandia homes are listed.
Every place Islandia 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 Islandia.
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.
56% of Islandia’s sales are condos, at $47K less than a house
21 houses and 27 condos sold in the year to May 2026. Condos sell faster. Houses draw more bidding wars.
typical sale · 21 sold in the year to May 2026
- Per square foot
- $338NY $316
- Days to sell
- 47
- Sold over asking
- 62%
- Listings with a price cut
- 18%
typical sale · 27 sold in the year to May 2026
- Per square foot
- $389NY $832
- Days to sell
- 39
- Sold over asking
- 33%
- Listings with a price cut
- 50%
About as many homes sell as usual, at 2.7 times the 2016 price
42 sales in the last year, against 64 in 2016 and a low of 25 in 2023. The typical sale went from $232K in 2016 to $627K.
Source: Redfin Data Center, MLS sales; from June 2026 each month is a 3-month rolling window, its counts divided by 3. Typical price and $/sq ft are the monthly medians, weighted by sales. Redfin stopped publishing towns’ figures by property type after May 2026, so houses and condos are shown for the year to then.
What $650K buys in Islandia
Check a listing against what Islandia 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 Islandia are more common than before the pandemic, but two thirds fewer homes come up for sale
We read every month of Islandia’s home sales since 2013 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 September 2026, 42 sales.
If you’re buying in Islandia
- Shop in September. It brings about 6 new listings a month, close to the busiest month, with fewer bidding wars (33% over asking).
- Bid near asking. Buyers paid 100.7% of the list price on average; 46% paid over.
- You’ll usually have time. Only 10% of homes go under contract within two weeks; the typical one takes 34 days.
Summer brings the homes; fall brings the bidding wars
June has the most new listings (about 7 a month), but November is the most competitive: 44% of November sales close over asking. September offers nearly as much choice with fewer homes bid up (33%). January has the least competition (29%).
Averages for each calendar month, 2015 on.
Calmer than the 2021 frenzy, and hotter than New York
| Islandia now | 2017–19 | 2021 peak | NY now | |
|---|---|---|---|---|
| Sold over askingShare of sales that closed above the list price | 46% | 22% | 62% | 39% |
| Gone within two weeksShare of homes under contract within 14 days | 10% | 6% | 15% | 25% |
| Price paid vs. askingAverage sale price ÷ list price | 100.7% | 97.3% | 101.2% | 100.5% |
| Days to sellMedian days from listing to contract | 34 | 67 | 33 | 43 |
5 homes for sale on a typical day
That’s 69% fewer than in 2017–19 and well under 2013’s 40.
Since 2019, houses are up 79%, condos 166%
A house typically sold for $640K in the year to May 2026 (21 sales), a condo for $592K (27).
Median sale price, weighted by sales each month. Years with fewer than 4 sales of a type are left out.
Source: Redfin Data Center, city figures, January 2013 to September 2026 (MLS sales, not seasonally adjusted; from June 2026 each month is a 3-month rolling window, its counts divided by 3). Ratios are weighted by homes sold; price cuts by homes for sale.
Five things worth knowing
New listings in June
The month with the most choice. December has the fewest, about 3.
Best time to buySchools
The schools grade for Islandia, from test results, graduation and how much students grow.
Schools in IslandiaTypical commute
The average one-way trip to work for people who live in Islandia.
Work & commuteCheck 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.
No busy market nearby sells for less a square foot
The busier markets within 25 miles of Islandia, 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 | |
|---|---|---|---|---|---|
| Central Islip | 222 | $566K | $387 | 65% | 39 |
| Hauppauge | 154 | $775K | $398 | 58% | 28 |
| Ronkonkoma | 142 | $639K | $426 | 70% | 27 |
| Lake Ronkonkoma | 129 | $634K | $406 | 65% | 27 |
| Nesconset | 104 | $799K | $401 | 67% | 25 |
| Bohemia | 72 | $733K | $384 | 64% | 37 |
| Islandia | 42 | $627K | $364 | 46% | 34 |
Redfin Data Center, October 2025 to September 2026. Towns with fewer than 20 sales are left out, and Redfin doesn’t report every town separately.
Post your home to Islandia, free
Selling it yourself, renting out an apartment or looking for a roommate? Post it to Islandia. People who follow the town see it, and so do people comparing Islandia with their own town. No commission, no listing fee.
Questions about buying a home in Islandia
What do homes sell for in Islandia, NY?
42 homes sold in the year to September 2026 at a typical $627K, $364 a square foot. Houses sold for about $640K, condos for about $592K in the year to May 2026.
Is Islandia a buyer’s or seller’s market?
A seller’s market: 9 homes were for sale in September 2026 and 2 sold, about 3.3 months of supply. Buyers paid 100.7% of asking on average.
When is the best time to buy in Islandia?
June brings the most new listings. The sales history shows which months have fewer bidding wars.
Where can I see homes for sale in Islandia?
Zillow, Redfin, Realtor.com and Homes.com all carry Islandia’s MLS listings; the search links above open each one filtered to Islandia.
Sales, prices, days on market and listings: Redfin Data Center (MLS, monthly, not seasonally adjusted; from June 2026 each month is a 3-month rolling window, its counts divided by 3). 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).