23 William Street
Central Islip, NY 11722
- 4 Beds
- 3 Baths
- 1,201 sqft (on 0.25 acres)
$550,000
Last Sold: Sep 2, 2025
0% over list $550K
$458/sqft
Est. Refi. Payment $3,570/mo*
$550,000
Last Sold: Sep 2, 2025
0% over list $550K
$458/sqft
Est. Refi. Payment $3,570/mo*
4 Beds
3 Baths
1,201 sqft
(on 0.25 acres)
Homes for sale near 23 William Street
Apartments for Rent
Local Information
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Description
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
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. This description is from September 02, 2025
Home Highlights
Parking
No Info
Outdoor
No Info
A/C
Heating & Cooling
HOA
None
Price/Sqft
$458/sqft
Listed
180+ days ago
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: $549,999Price Per Sqft: $458/sqft |
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 |
Last check for updates: about 14 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

Price History for 23 William Street
| Date | Price | Event | Source |
|---|---|---|---|
| 09/02/2025 | $550,000 | Sold | OneKey® MLS as distributed by MLS GRID #833858 |
| 04/09/2025 | $549,999 | Pending | OneKey® MLS as distributed by MLS GRID #833858 |
| 03/20/2025 | $549,999 | ListingRemoved | OneKey® MLS as distributed by MLS GRID #833858 |
| 03/11/2025 | $549,999 | Listed For Sale | OneKey® MLS as distributed by MLS GRID #833858 |
| 03/31/2018 | $339,000 | ListingRemoved | Agent Provided |
| 03/28/2018 | $339,000 | Listed For Sale | Agent Provided |
| 03/17/2004 | $280,000 | Sold | N/A |
Property Tax and Assessment
| Year | 2024 |
|---|---|
| Tax | |
| Assessment | $24,800 |
Home facts updated by county records
Comparable Sales for 23 William Street
Address | Distance | Property Type | Sold Price | Sold Date | Bed | Bath | Sqft |
|---|---|---|---|---|---|---|---|
0.05 | Single-Family Home | $689,000 | 12/18/25 | 4 | 2 | 1,787 | |
0.05 | Single-Family Home | $695,000 | 06/13/25 | 5 | 3 | 1,820 | |
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 | |
0.34 | Single-Family Home | $620,000 | 04/02/26 | 4 | 2 | 1,602 |
Assigned Schools
These are the assigned schools for 23 William Street.
What Locals Say about Central Islip
At least 346 Trulia users voted on each feature.
85 % Say car is needed
81 % Say parking is easy
81 % 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 neighbors are friendly
47 % Say streets are well-lit
43 % Say it's walkable to restaurants
41 % Say people would walk alone at night
40 % Say there's wildlife
33 % Say there are community events
Learn more about our methodology.
LGBTQ Local Legal Protections
LGBTQ Local Legal Protections

Based on information submitted to the MLS GRID as of 2026-02-06 15:18:24 PST. 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
Homes for rent near 23 William Street
Off Market Homes Near 23 William Street
Explore by feature
23 William Street, Central Islip, NY 11722 is a 4 bedroom, 3 bathroom, 1,201 sqft single-family home built in 1962. This property is not currently available for sale. 23 William Street was last sold on Sep 2, 2025 for $550,000 (0% higher than the asking price of $549,999). The current Trulia Estimate for 23 William Street is $582,100.