20 William St, Copiague, NY 11726
OFF MARKET

20 William St
Copiague, NY 11726

  • 4 Beds
  • 2 Baths

$635,700

Trulia Estimate
as of Jun 12, 2026
Est. Refi. Payment $4,213/mo*
Refinance Your Home

$635,700

Trulia Estimate
as of Jun 12, 2026
Est. Refi. Payment $4,213/mo*
Refinance Your Home
4 Beds
2 Baths

Local Information

Map showing home location
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Commute Destination

Description

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.
This property is off market, which means it's not currently listed for sale or rent on Trulia. This may be different from what's available on other websites or public sources.

Home Highlights

Parking
No Info
Outdoor
No Info
A/C
Heating & Cooling
HOA
None
Price/Sqft
No Info
Listed
Less than a day ago

Home Details for 20 William St

Interior Features

Heating & Cooling
Heating: Other, OilCooling System: OtherHeating Fuel: Other
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 History for 20 William St

DatePriceEventSource
08/05/2014$270,000Sold
OneKey® MLS as distributed by MLS GRID #L2671683
03/14/2014$269,990ListingRemovedAgent Provided
09/21/2013$269,990PriceChange
Agent Provided
08/08/2013$289,990PriceChange
Agent Provided
06/04/2013$299,990PriceChange
Agent Provided
04/26/2013$309,990Listed For SaleAgent Provided

Market trends in Copiague

Last updated May 2026
Buyer'sMarketSeller'sMarket
Avg. sale price
—
Sale-to-List Price
—
Price per sq ft
—
Available listings
46
7MoM
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Property Tax and Assessment

Year2025
Tax
Assessment$3,210
Home facts updated by county records

Homeowner tools

Estimated monthly rent$3,794/mo
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Homes for rent near 20 William St

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Comparable Sales for 20 William St

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
22 William Street, Copiague, NY
0.01
Single-Family Home
$689,864
03/13/26
4
2
2,252
644 Merrick Road, Copiague, NY
0.16
Single-Family Home
$480,000
06/13/25
3
1.5
810
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 homes

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Assigned Schools

These are the assigned schools for 20 William St.
View nearby schools on GreatSchools
The GreatSchools Rating compares schools on a variety of school quality indicators including test scores, college readiness, equity and more. Learn more.

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
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  • 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
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  • 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
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  • 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
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Off Market Homes Near 20 William St

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20 William St, Copiague, NY 11726 is a 4 bedroom, 2 bathroom single-family home built in 1955. This property is not currently available for sale. 20 William St was last sold on Aug 5, 2014 for $270,000. The current Trulia Estimate for 20 William St is $635,700.