23 William Street
Central Islip, NY 11722
- 4 Beds
- 3 Baths
- 1,201 sqft (on 0.25 acres)
4 Beds
3 Baths
1,201 sqft
(on 0.25 acres)
Home Value
Trulia Estimate
$585KSince last month
Increased$1K (+0.2%)Since last year
Decreased$6K (-0.9%)Since last sale
Increased$37K (+6.7%)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 +153% in the last 10 years
| Month | Estimated value |
|---|---|
2026 | |
| August 2026 | $587K |
| July 2026 | $586K |
| June 2026 | $580K |
| May 2026 | $587K |
| April 2026 | $582K |
| March 2026 | $581K |
| February 2026 | $581K |
| January 2026 | $570K |
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 |
|---|---|---|---|---|---|---|---|
0.09 | Single-Family Home | $650,000 | 08/12/26 | 3 | 2.5 | 1,405 | |
0.05 | Single-Family Home | $689,000 | 03/25/26 | 4 | 2 | 1,787 | |
0.28 | Single-Family Home | $630,000 | 11/19/25 | 4 | 3 | 1,327 | |
0.23 | Single-Family Home | $553,000 | 02/27/26 | 4 | 2 | 1,138 | |
0.27 | Single-Family Home | $520,000 | 10/16/25 | 4 | 1.5 | 1,195 | |
0.31 | Single-Family Home | $619,000 | 05/05/26 | 4 | 2 | 1,243 | |
0.22 | Single-Family Home | $540,000 | 01/14/26 | 4 | 3 | 1,600 | |
0.27 | Single-Family Home | $575,000 | 09/08/25 | 4 | 1.5 | 1,225 | |
0.38 | Single-Family Home | $570,000 | 05/15/26 | 4 | 1.5 | 1,098 |
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 |
|---|---|---|---|---|---|---|
0.02 | $675,000 | 4 | 3 | 1,460 | For Sale | |
0.05 | $689,000 | 4 | 2 | 1,787 | Recently Sold | |
0.09 | $650,000 | 3 | 2.5 | 1,405 | Recently Sold | |
0.05 | $759,100 | 5 | 3 | 1,820 | Off Market | |
0.08 | $646,600 | 3 | 1 | 1,600 | Off Market | |
0.12 | $758,100 | 6 | 3 | - | Off Market | |
0.14 | $694,100 | 5 | 3 | 1,600 | Off Market | |
0.18 | $629,700 | 4 | 3 | 1,800 | Off Market | |
0.15 | $580,000 | 3 | 2 | 918 | Off Market | |
0.21 | $581,800 | 3 | 1 | - | Off Market | |
0.23 | $601,300 | 4 | 1.5 | - | Off Market |
Local Information
-- mins to
Home Highlights
Property Type
Single-Family Home
Year Built
1962
Lot Size
0.25 acres
Living Area
1,201 sqft
Price/Sqft
$487
About this House
New to the Market - 4 Bedroom, 3 Full Bath Ranch - Living Room, Eat in Kitchen, Full Finished Basement with Outside Entrance, Hi-Hats, Hardwood Floors, Large Size Rooms - 2 Zone Gas Heating, True Taxes: 8366.14 -
1st Floor - Eat In Kitchen, Living Room, 4 Bedrooms, 2 Full Baths - Downstairs: Full Basement with OSE
1st Floor - Eat In Kitchen, Living Room, 4 Bedrooms, 2 Full Baths - Downstairs: Full Basement with OSE
23 William Street, Central Islip, NY 11722 is a 4 bedroom, 3 bathroom, 1,201 sqft single-family home built in 1962. It last sold for the $549,999 asking price on Sep 2, 2025. It is currently off market. The Trulia Estimate is $585,100, with a rent estimate of $3,889/month.
Last check for updates: about 19 hours ago
Listed by Michael P. McLean, (631) 585-8400
Signature Premier Properties, (631) 585-8400
Bought with: Michael P. McLean, (631) 585-8400, Signature Premier Properties, (631) 585-8400
Source: OneKey® MLS as distributed by MLS GRID, MLS#833858

Home Details for 23 William Street
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Interior Details Basement: FullNumber of Rooms: 6Types of Rooms: Basement |
Beds & Baths Number of Bedrooms: 4Number of Bathrooms: 3Number of Bathrooms (full): 3 |
Dimensions and Layout Living Area: 1201 Square Feet |
Appliances & Utilities Utilities: NoneAppliances: RefrigeratorRefrigerator |
Heating & Cooling Heating: Has Heating Unspecified TypeHas CoolingAir Conditioning: Wall/Window Unit(s)Has HeatingHeating Fuel: Has Heating Unspecified Type |
Fireplace & Spa Fireplace: NoneNo FireplaceNo Spa |
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Exterior Home Features Fencing: FencedNo Private Pool |
Parking & Garage No CarportNo Garage |
Water & Sewer Sewer: Cesspool |
Farm & Range Not Allowed to Raise Horses |
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Cumulative Days on Market: 9 |
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Year Built Year Built: 1962 |
Property Type / Style Property Type: ResidentialProperty Subtype: Single Family Residence, ResidentialArchitecture: Ranch |
Building Not Attached Property |
Property Information Parcel Number: 0500099000200024000 |
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Price List Price: $549,999 |
Status Change & Dates Off Market Date: Thu Mar 20 2025 |
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MLS Status: Sold |
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Direction & Address City: Central Islip |
School Information Elementary School: Contact AgentJr High / Middle School: CHARLES A MULLIGAN ELEMENTARY SCHOOLHigh School: Central Islip Senior High SchoolHigh School District: Central Islip |
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Building Area Building Area: 1201 Square Feet |
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Not Senior Community |
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No HOA |
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Lot Area: 10890 sqft |
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Special Conditions: None |
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Listing Agreement Type: Exclusive Agency |
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BasementMls Number: 833858Attic: NoneAttribution Contact: 631-585-8400Showing Requirements: Appointment Only |
Price and Tax history
| Date | Event | Price |
|---|---|---|
Sep 2, 2025 Source: OneKey® MLS as distributed by MLS GRID #833858 | Sold | $550,000 |
Apr 9, 2025 Source: OneKey® MLS as distributed by MLS GRID #833858 | Pending | $549,999 |
Mar 20, 2025 Source: OneKey® MLS as distributed by MLS GRID #833858 | ListingRemoved | $549,999 |
Mar 11, 2025 Source: OneKey® MLS as distributed by MLS GRID #833858 | Listed For Sale | $549,999 |
Mar 31, 2018 Source: Agent Provided | ListingRemoved | $339,000 |
Mar 28, 2018 Source: Agent Provided | Listed For Sale | $339,000 |
Mar 17, 2004 Source: N/A | Sold | $280,000 |
| Year | Property tax | Tax assessment |
|---|---|---|
| 2025 | Unavailable | $24,800 |
Home facts updated by county records
Market trends in Central Islip
Last updated July 2026
Avg. sale price
—
Sale-to-List Price
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Price per sq ft
—
Available listings
63
2MoM
Around this home
What Locals Say about Central Islip
At least 347 Trulia users voted on each feature.
85 % Say car is needed
82 % Say parking is easy
82 % Say yards are well-kept
70 % Say it's dog friendly
67 % Say there's holiday spirit
58 % Say kids play outside
56 % Say it's quiet
56 % Say there are sidewalks
51 % Say it's walkable to grocery stores
48 % Say they plan to stay for at least 5 years
47 % Say streets are well-lit
46 % Say neighbors are friendly
43 % Say it's walkable to restaurants
41 % Say people would walk alone at night
41 % Say there's wildlife
32 % Say there are community events
Sourced by Trulia users. Learn more about our methodology.
LGBTQ Local Legal Protections
LGBTQ Local Legal Protections

Based on information submitted to the MLS GRID as of 2026-08-23 17:38:26 PDT All data is obtained from various sources and may not have been verified by broker or MLS GRID. Supplied Open House Information is subject to change without notice. All information should be independently reviewed and verified for accuracy. Properties may or may not be listed by the office/agent presenting the information. Some IDX listings have been excluded from this website. Click here for more information
Frequently asked questions about 23 William Street
- What is 23 William Street estimated to be worth?Trulia's estimated value for 23 William Street in Central Islip, NY is $585,100.
- What is the price history for 23 William Street?23 William Street in Central Islip, NY last sold for $550,000 in September 2025.
- Is Central Islip a buyer's or seller's market?Central Islip is currently a seller's market, based on recent for-sale activity.
- What do residents say about Central Islip?Residents describe Central Islip, NY as easy to park in, well-kept, and dog-friendly. Most residents say you need a car. See recently sold homes in Central Islip, NY.
- Does 23 William Street have air conditioning?Yes, 23 William Street in Central Islip, NY has air conditioning.
- Does 23 William Street have a yard?Yes, 23 William Street in Central Islip, NY has a yard.