20 William St, Copiague, NY 11726
Property image
Property image
OFF MARKET

$644,100

Trulia Estimate
  • 4 Beds
  • 2 Baths

20 William St, Copiague, NY 11726

Est. Refi. Payment $4,373/mo*
Refinance Your Home
Currently Off Market - Sold Aug 5, 2014 for $270,000

Home Value

Trulia Estimate
$644K
Since last month
Increased$15K (+2.4%)
Since last year
Increased$43K (+7.1%)
Since last sale
Increased$374K (+138.6%)
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 +136% in the last 10 years
MonthEstimated value
2026
August 2026$644K
August 2026$643K
July 2026$629K
June 2026$637K
May 2026$622K
April 2026$618K
March 2026$612K
February 2026$613K
January 2026$605K
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
28 William Street, Copiague, NY
0.07
Single-Family Home
$480,000
09/15/25
3
2
1,470
31 N Emerson Avenue, Copiague, NY
0.12
Single-Family Home
$650,000
11/19/25
4
2
2,000
385 Grant Avenue, Copiague, NY
0.02
Single-Family Home
$650,000
08/18/26
4
2
1,600
22 William Street, Copiague, NY
0.01
Single-Family Home
$689,864
03/13/26
4
2
2,252
230 Rose Street, Copiague, NY
0.07
Single-Family Home
$628,000
10/29/25
3
2
1,238
24 N Anita Place, Amityville, NY
0.23
Single-Family Home
$520,000
09/16/25
3
2
2,200
4 William Street, Copiague, NY
0.09
Single-Family Home
$698,700
01/23/26
4
2
1,910
255 Rose Street, Copiague, NY
0.10
Single-Family Home
$660,000
11/06/25
5
2
1,734
41 Brookside Court, Copiague, NY
0.38
Single-Family Home
$535,000
02/27/26
4
1.5
1,309
40 Pleasantview Court, Copiague, NY
0.31
Single-Family Home
$565,000
09/08/25
4
2
1,507

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 William Street, Copiague, NY 11726
0.01
$745,000
4
2
2,252
Foreclosure
385 Grant Avenue, Copiague, NY 11726
0.02
$650,000
4
2
1,600
Recently Sold
28 William Street, Copiague, NY 11726
0.07
$506,000
3
2
1,470
Off Market
8 Mckinley Street, Copiague, NY 11726
0.06
$580,900
3
1
1,344
Off Market
30 William Street, Copiague, NY 11726
0.08
$638,500
3
1.5
-
Off Market
616 Kenmore Avenue, Copiague, NY 11726
0.03
$621,800
3
1
-
Off Market
3 Mckinley Street, Copiague, NY 11726
0.09
$595,200
3
1
-
Off Market
230 Rose Street, Copiague, NY 11726
0.07
$658,500
3
2
1,238
Off Market
255 Rose Street, Copiague, NY 11726
0.10
$660,000
5
2
1,734
Recently Sold
125 Garden Street, Copiague, NY 11726
0.13
$780,500
5
3
-
Off Market
36 William Street, Copiague, NY 11726
0.13
$650,000
3
2.5
1,840
Recently Sold
127 Garden Street, Copiague, NY 11726
0.13
$604,000
3
2
-
Off Market

Local Information

  • Map ViewExplore the area around 20 William St.
  • Schools2 Elementary Schools1 Middle School1 High School
  • Shop & Eat
-- mins to
Commute Destination

Home Highlights

Property Type
Single-Family Home
Year Built
1955

About this House

This single-family home is located at 20 William St, Copiague, NY. 20 William St is in Copiague, NY and in ZIP code 11726. This property has 4 bedrooms and 2 bathrooms. This property has a lot size of 6000 sqft and was built in 1955.
20 William St, Copiague, NY 11726 is a 4 bedroom, 2 bathroom single-family home built in 1955. It last sold for $270,000 on Aug 5, 2014. This property is not currently displayed as for sale or rent on Trulia. The Trulia Estimate is $644,100, with a rent estimate of $2,911/month.

Home Details for 20 William St

Interior Features

Heating & Cooling
Heating: OilHeating Fuel: Oil
Interior Details
Number of Rooms: 7Types of Rooms: Dining Room
Appliances & Utilities
DryerRefrigeratorWasher
Fireplace & Spa
Fireplace

Exterior Features

Exterior Home Features
Roof: Other

Property Information

Year Built
Year Built: 1955
Property Type / Style
Property Type: Single Family HomeArchitecture: Other

Community

Units in Building: 1

Lot Information

Lot Area: 6000 sqft

Price and Tax history

DateEventPrice
Aug 5, 2014
Source: OneKey® MLS as distributed by MLS GRID #L2671683
Sold
$270,000
Mar 14, 2014
Source: Agent Provided
ListingRemoved
$269,990
Sep 21, 2013
Source: Agent Provided
PriceChange
$269,990
Price decreased by 7%
Aug 8, 2013
Source: Agent Provided
PriceChange
$289,990
Price decreased by 3%
Jun 4, 2013
Source: Agent Provided
PriceChange
$299,990
Price decreased by 3%

Market trends in Copiague

Last updated July 2026
Buyer'sMarketSeller'sMarket
Avg. sale price
—
Sale-to-List Price
—
Price per sq ft
—
Available listings
34
8MoM

Around this home

What Locals Say about Copiague

At least 189 Trulia users voted on each feature.

  • 82 % Say parking is easy

  • 77 % Say it's dog friendly

  • 77 % Say car is needed

  • 74 % Say yards are well-kept

  • 73 % Say there's holiday spirit

  • 72 % Say it's walkable to grocery stores

  • 69 % Say there are sidewalks

  • 65 % Say kids play outside

  • 61 % Say it's walkable to restaurants

  • 61 % Say people would walk alone at night

  • 60 % Say it's quiet

  • 58 % Say they plan to stay for at least 5 years

  • 56 % Say streets are well-lit

  • 56 % Say neighbors are friendly

  • 44 % Say there are community events

  • 37 % Say there's wildlife

Sourced by Trulia users. Learn more about our methodology.
  • Trulia User
    "Summer time BBQs we attend at our neighbors house. We been here 5 years and have built great bonds with our neighbors. My children also have found friends in the neighborhood that they have grown up with. I love this neighborhood, great place to live. It’s also a neighborhood thats currently under constant development."
    0
    Flag
  • Kelsey Cruz
    "It’s a good place to live here and lots of people are very friendly here and people clean up after themselves"
    0
    Flag
  • Trulia User
    "I travel for approximately 60 miles a day, back and forth to work. Besides the constant traffic near the inner city, the commute is good. "
    0
    Flag
  • Bonnie55317
    "I have lived in this neighborhood for 23 years. It is safe, walkable, friendly, and overall pleasant. to live here. The schools are good and the town beaches nearby are outstanding. Water park and playground for the kids. Fishing, boating and even free concerts there in the evenings in summer. Lots to do and a friendly atmosphere overall."
    0
    Flag
  • Trulia User
    "Love this neighborhood, peaceful, quiet, affordable, and diverse. The neighborhood is currently going through some major investments taking place in the neighborhood. "
    1
    Flag
  • Trulia User
    "I love the neighborly atmosphere of the block I live on. Copiague provides affordable living, diversity, and a safe environment. "
    3
    Flag
  • Jessicasanchez0930
    "There’s a dog park in town that have very friendly people. During the summer the park is full of fun and people. Live music and a nice view of the water "
    3
    Flag
  • Erubey89
    "you would like walking dog on quiet streets. And every dog on a leash. And owners picking up after them."
    8
    Flag
  • Hung.gar88
    "We have few parks and playgrounds in the are. A very good library with bunch of book. People are friendly "
    2
    Flag
  • Arthur M.
    "We can benefit from social multicultural gatherings and events. This will bring people together encouraging all walks of faiths and cultures to reach and relate to each other. "
    5
    Flag
  • Keisha B.
    "It’s a quiet area and it’s close to everything. Everything is in walking distance, banks,post office, fire station, drugstores,supermarkets,deli."
    6
    Flag
  • Erubey89
    "My neighborhood has public transportation but I commute in my car. Definitely has a railroad and a bus service. "
    2
    Flag
  • Haydee_osorio
    "Many near by shops, local restaurants, stores. You can get anything you need by driving 5 to 10 min . "
    2
    Flag
  • Saniece F.
    "Annual community day at the park with entertainment for kids and adults. Summer barbecues and block parties for the neighborhood with contributors from the neighborhood as well "
    1
    Flag
  • Danielle M.
    "Copiague has a really good school district there’s so many kids in the neighborhood and there’s always activities going on "
    2
    Flag
  • Looneyjay19
    "Ive lived here for two years People are nice and friendly here Clean and safe place to live in Quiet"
    0
    Flag
  • Salvatoreferriola
    "very diverse community. school district seems decent. a lot of different parks. stores are close by. most neighbors are friendly and nice. "
    0
    Flag
  • Erubey89
    "The schools are good and the teachers all seem to care. Have 1 kid in middle school and 1 kid in high school. They both seem to like their schools so far. Both of them went to elementary school and liked their teachers and school. "
    1
    Flag
  • Christina D.
    "It’s a decent neighborhood. Only been in this area for a year so we are still getting a feel of the neighborhood. Overall nice "
    1
    Flag
  • Saniece
    "All neighbors are friendly and the community as a whole likes to gather for holidays and have different events around town."
    0
    Flag
  • Loveconquersall013
    "I think they would people walk they dogs all the time. it's a friendly neighborhood. it's also a pet Friendly neighborhood."
    2
    Flag
  • Elizaduran0590
    "Is a small town where most of the people are good people and with moral we also have deli drug store restaurants and shopping center available "
    0
    Flag
  • The_healing1
    "The area is family friendly and stable. There is a good mix of children, youngsters , middle age, families and older people. Shopping is abundant: no more than 10 min in any direction. Medical facilities, doctors offices, parks, highway and railroad access all close by. Housing is still relatively affordable compared to neighboring towns. All that’s needed are a few more good families who care!"
    0
    Flag
  • Bielka
    "good neighbors . quite areas and shopping center close. the only thing I think it's getting bad in town is that the rent it's going to high."
    1
    Flag
  • Janelis2324
    "its quiet and i have amazing neighbors to talk with and theres pkaces i can walk to like the deli or tge park"
    0
    Flag

LGBTQ Local Legal Protections

Frequently asked questions about 20 William St

  • What is 20 William St estimated to be worth?
    Trulia's estimated value for 20 William St in Copiague, NY is $644,100.
  • What is the price history for 20 William St?
    20 William St in Copiague, NY last sold for $270,000 in August 2014.
  • Is Copiague a buyer's or seller's market?
    Copiague is currently a balanced market, based on recent for-sale activity.
  • What do residents say about Copiague?
    Residents describe Copiague, NY as easy to park in, dog-friendly, and well-kept. Most residents say you need a car. See recently sold homes in Copiague, NY.
  • Does 20 William St have laundry facilities?
    Yes, 20 William St in Copiague, NY has in-unit laundry.
  • How big is the lot at 20 William St?
    The lot at 20 William St in Copiague, NY is about 0.14 acres (6,000 sq ft).

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Off Market Homes Near 20 William St

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