House Prices

House Prices & Home Values Islandia, NY 2026


Average Data

average house price$451,824
average size per house1709 ft²
average price per ft²265 $ / ft²

04/04/2026 - The value range (VR) for house prices in Islandia, NY is $333/ sqft to $333/ sqft. An average home with 1709 sqft costs approximately $569,097 to $569,097. Islandia, NY includes 1 ZIP codes and it is located in Suffolk county. The lowest prices are found in ZIP 11749, while the highest are in ZIP 11749. The average price per sqare feet is $265. Our analysis is based on 12 property listings.

Avergage prices by ZIP codes Islandia

11749340 $ / ft²




Historical development of home values in Islandia

Year Estimated value (USD) Change vs. 2025
2010 $209,835 -53.6%
2011 $201,721 -55.4%
2012 $201,178 -55.5%
2013 $208,697 -53.8%
2014 $219,075 -51.5%
2015 $230,318 -49.0%
2016 $242,338 -46.4%
2017 $255,418 -43.5%
2018 $269,539 -40.3%
2019 $282,037 -37.6%
2020 $296,617 -34.4%
2021 $337,370 -25.3%
2022 $393,297 -13.0%
2023 $414,750 -8.2%
2024 $438,744 -2.9%
2025 $451,824 0.0%

Graph: estimated home values in Islandia over time (USD)



Example: 100% financing house in Islandia

Loan amount: $451,824

Interest rate: 6.00%

Fixed monthly payment: $2,708.91

Breakdown in the 1st month:
Interest portion: $2,259.12  –  Principal portion: $449.79

Yearly breakdown (100% financing)

Year Interest per year ($) Principal per year ($) Remaining balance at year-end ($)
1 $26,958.51 $5,548.45 $446,275.55
2 $26,616.29 $5,890.67 $440,384.88
3 $26,252.97 $6,253.99 $434,130.89
4 $25,867.23 $6,639.72 $427,491.16
5 $25,457.71 $7,049.25 $420,441.92
6 $25,022.93 $7,484.03 $412,957.89
7 $24,561.33 $7,945.63 $405,012.26
8 $24,071.26 $8,435.70 $396,576.56
9 $23,550.97 $8,955.99 $387,620.57
10 $22,998.58 $9,508.38 $378,112.19
11 $22,412.12 $10,094.83 $368,017.36
12 $21,789.50 $10,717.46 $357,299.89
13 $21,128.47 $11,378.49 $345,921.40
14 $20,426.67 $12,080.29 $333,841.11
15 $19,681.58 $12,825.38 $321,015.73
16 $18,890.54 $13,616.42 $307,399.31
17 $18,050.71 $14,456.25 $292,943.06
18 $17,159.08 $15,347.88 $277,595.18
19 $16,212.45 $16,294.50 $261,300.68
20 $15,207.44 $17,299.51 $244,001.16
21 $14,140.45 $18,366.51 $225,634.65
22 $13,007.64 $19,499.32 $206,135.34
23 $11,804.97 $20,701.99 $185,433.35
24 $10,528.11 $21,978.84 $163,454.50
25 $9,172.51 $23,334.45 $140,120.05
26 $7,733.29 $24,773.67 $115,346.38
27 $6,205.30 $26,301.65 $89,044.73
28 $4,583.07 $27,923.88 $61,120.85
29 $2,860.79 $29,646.17 $31,474.68
30 $1,032.28 $31,474.68 $0.00

Note: The calculation is based on a standard annuity mortgage with a fixed monthly payment over the entire term. Extra payments, interest rate changes, and additional purchase costs (e.g. taxes, notary fees) are not included.


How to sell in Islandia, NY


1500 sqft3900 sqft
Ø selling price$480,976$1,023,166
Ø fast selling$437,251$920,849
Ø high price sale$524,700$1,125,482

In 2026, houses in Islandia, NY will be offered at an average price of $265 per square foot. A 1,500 sqft home priced at $480,976 is 23.46% more expensive per square foot than a 3,900 sqft home priced at $1,023,166. Home prices in Islandia, NY vary significantly depending on the neighborhood and location. For a quick sale, a 2,700 sqft home should be listed at around $708,345. Sellers who can wait longer may achieve a higher price of up to $865,756.

FAQ – Home Values in Islandia

What is the median home value in Islandia in 2026?

In 2026, the typical home value in Islandia is about $451,824 for an average home size of 1709 square feet. This corresponds to an average price of roughly $265 per square foot.

What is the average cost per square foot in Islandia?

In 2026, homes in Islandia sell for an average of around $265 per square foot, with a typical range between $333 and $333 per square foot, depending on the property’s location, condition, and lot size.

What is the average home size in ?

The average home size in Islandia is about 1709 square feet, with an estimated 2026 value around $451,824.



Locations close to Islandia, NY

Islip, NY297 $ / ft²
Islip Terrace, NY323 $ / ft²
Jericho, NY457 $ / ft²
Melville, NY364 $ / ft²
Huntington Station, NY158 $ / ft²
Huntington, NY214 $ / ft²
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