21 Post Ave, Williston Park, NY 11596
OFF MARKET

$2,047,900

Trulia Estimate
  • Studio
  • 3 Baths
  • 3,392 sqft (on 0.40 acres)

21 Post Ave, Williston Park, NY 11596

Est. Refi. Payment $13,121/mo*
Refinance Your Home
Currently Off Market - Sold Dec 12, 2011 for $900,000

Home Value

Trulia Estimate
$2.05M
Since last month
Decreased$35K (-1.7%)
Since last year
Increased$120K (+6.2%)
Since last sale
Increased$1M (+126.1%)
Learn more about this home's value by checking out its Trulia Estimate, the value of nearby homes, and how much similar homes have sold for.

Trulia Estimate

The of this home's value increased by +88% in the last 10 years
MonthEstimated value
2026
August 2026$2.04M
August 2026$2.04M
July 2026$2.07M
June 2026$2.06M
May 2026$2.01M
April 2026$1.95M
March 2026$1.96M
February 2026$1.93M
January 2026$1.92M
2025
2024
2023
2022
2021
2020
2019
2018
2017
2016

Comparable sales

These are recently sold homes that have a similar location or other similar features to this home, like bedrooms, bathrooms, and square footage. Get a sense of the expected prices in the area by viewing these homes.
Address
Distance
Property Type
Sold Price
Sold Date
Bed
Bath
Sqft
45 Orchard Meadow Road, Williston Park, NY
0.16
Single-Family Home
$1,600,000
03/20/26
4
3
2,800
30 School Street, Williston Park, NY
0.11
Single-Family Home
$1,625,000
07/03/26
3
1.5
1,852
409 Titus Way, Williston Park, NY
0.30
Single-Family Home
$1,170,000
04/10/26
4
3
2,353
29 Meritoria Drive, Williston Park, NY
0.29
Single-Family Home
$1,700,000
09/19/25
5
3.5
4,000
403 Titus Way, East Williston, NY
0.32
Single-Family Home
$1,430,000
09/08/25
5
2.5
2,657
21 Orchard Drive, Williston Park, NY
0.29
Single-Family Home
$1,530,000
10/16/25
4
3.5
2,108
192 Bengeyfield Drive, Williston Park, NY
0.44
Single-Family Home
$1,600,000
08/07/26
4
2.5
2,621
128 Charles Street, East Williston, NY
0.36
Single-Family Home
$1,228,000
01/20/26
4
2.5
2,000
19 E Williston Avenue, East Williston, NY
0.26
Single-Family Home
$2,550,000
03/05/26
4
4.5
3,641
207 Derby Street, Williston Park, NY
0.24
Single-Family Home
$990,000
11/25/25
3
1.5
1,648

Nearby home prices

Get a sense of expected prices in the area by checking the value of nearby homes.
Address
Distance
Price
Bed
Bath
Sqft
Status
22 Fairview Avenue, Williston Park, NY 11596
0.04
$2,159,900
4
2.5
4,300
Off Market
11 Post Avenue, East Williston, NY 11596
0.04
$3,110,800
5
4.5
4,000
Off Market
453 Roslyn Road, Williston Park, NY 11596
0.11
$1,721,600
5
2.5
3,034
Off Market
4 Summit Avenue, Williston Park, NY 11596
0.12
$1,978,000
5
3.5
3,525
Off Market
441 Roslyn Road, Williston Park, NY 11596
0.10
$1,249,999
4
2.5
2,081
For Sale
30 School Street, Williston Park, NY 11596
0.11
$1,625,000
3
1.5
1,852
Recently Sold
120 William Street, East Williston, NY 11596
0.10
$1,398,000
3
2.5
1,922
For Sale
207 Earl Street, East Williston, NY 11596
0.13
$1,605,900
5
3.5
-
Off Market
110 William Street, Williston Park, NY 11596
0.11
$1,649,000
4
2.5
2,400
For Sale
203 Concord Street, East Williston, NY 11596
0.16
$1,411,200
3
2
1,626
Off Market
70 School Street, Williston Park, NY 11596
0.16
$3,461,500
4
4
4,779
Off Market
212 Glenmore Street, East Williston, NY 11596
0.18
$1,429,200
3
2
-
Off Market

Local Information

  • Map ViewExplore the area around 21 Post Ave.
  • Schools1 Preschool School2 Elementary Schools2 Middle Schools1 High School
  • Shop & Eat
-- mins to
Commute Destination

Home Highlights

Property Type
Single-Family Home
Year Built
1941
Lot Size
0.4 acres
Living Area
3,392 sqft
Price/Sqft
$604
Parking
Garage

About this House

This single-family home is located at 21 Post Ave, Williston Park, NY. 21 Post Ave is in Williston Park, NY and in ZIP code 11596. This property has 3 bathrooms and approximately 3,392 sqft of floor space. This property has a lot size of 0.40 acres and was built in 1941.
21 Post Ave, Williston Park, NY 11596 is a studio, 3 bathroom, 3,392 sqft single-family home built in 1941. It last sold for $900,000 on Dec 12, 2011. This property is not currently displayed as for sale or rent on Trulia. The Trulia Estimate is $2,047,900, with a rent estimate of $6,466/month.

Home Details for 21 Post Ave

Interior Features

Levels, Entrance, & Accessibility
Stories: 2
Interior Details
Number of Rooms: 8Types of Rooms: Recreation Room
Heating & Cooling
Air ConditioningCooling System: Central
Fireplace & Spa
Fireplace

Property Information

Year Built
Year Built: 1941
Property Type / Style
Property Type: Single Family HomeArchitecture: Colonial

Exterior Features

Exterior Home Features
Exterior: Brick
Pool
Pool
Parking & Garage
GarageParking: Garage

Community

Units in Building: 1

Lot Information

Lot Area: 0.40 acres

Price and Tax history

DateEventPrice
Dec 12, 2011
Source: N/A
Sold
$900,000

Market trends in East Williston

Last updated July 2026
Buyer'sMarketSeller'sMarket
Avg. sale price
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Sale-to-List Price
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Price per sq ft
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Available listings
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Around this home

What Locals Say about East Williston

At least 11 Trulia users voted on each feature.

  • 100 % Say yards are well-kept

  • 100 % Say streets are well-lit

  • 94 % Say parking is easy

  • 93 % Say there's holiday spirit

  • 92 % Say it's dog friendly

  • 89 % Say kids play outside

  • 88 % Say car is needed

  • 83 % Say people would walk alone at night

  • 80 % Say it's quiet

  • 80 % Say they plan to stay for at least 5 years

  • 74 % Say neighbors are friendly

  • 73 % Say there are sidewalks

  • 57 % Say it's walkable to restaurants

  • 47 % Say it's walkable to grocery stores

  • 38 % Say there are community events

  • 36 % Say there's wildlife

Sourced by Trulia users. Learn more about our methodology.
  • Trulia User
    "Great school district grades kindergarten thru 12th grade "
    0
    Flag
  • Alexsandro Ingargiola
    " You see dog owners walking their dogs all the time. It’s a great way to meet neighbors. "
    0
    Flag
  • Jdioguardi
    "Best Community in Nassau with great schools, nice people and close to all highways"
    0
    Flag
  • Andrea
    "I live here and I could not imagine a more perfect place. My family walks to local stores and to go out to dinner. We see people walking their dogs and babies and people exercising daily throughout the year. Everyone says hi or gives the head nod to say hello.Love it!"
    1
    Flag

LGBTQ Local Legal Protections

Frequently asked questions about 21 Post Ave

  • What is 21 Post Ave estimated to be worth?
    Trulia's estimated value for 21 Post Ave in Williston Park, NY is $2,047,900.
  • What is the price history for 21 Post Ave?
    21 Post Ave in Williston Park, NY last sold for $900,000 in December 2011.
  • Is Williston Park a buyer's or seller's market?
    Williston Park is currently a seller's market, based on recent for-sale activity.
  • What do residents say about Williston Park?
    Residents describe Williston Park, NY as well-kept, easy to park in, and dog-friendly. Most residents say you need a car. See recently sold homes in Williston Park, NY.
  • Does 21 Post Ave have air conditioning?
    Yes, 21 Post Ave in Williston Park, NY has air conditioning.
  • Does 21 Post Ave have a pool?
    Yes, 21 Post Ave in Williston Park, NY has a pool.

Apartments for Rent

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