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Central Islip 11722 Central Islip
23 William Street
Photo of 23 William Street
Sold on Sep 2, 2025

16

Map

Photo of 23 William Street
Photo of 23 William Street
$550,000
● House - Off Market

23 William Street

Islip, NY 11722
bedrooms
4 Beds
bathrooms
3 Baths
square feet
1,201 Ft²
$3,398
Est. Monthly
9.82%
Cap Rate

About This Property

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
Unit Size
1,201 Ft²
Days on Market
175 days
Land Size
0.25 acres
Price per sqft
$458
Property Type
House
Property Taxes
$697
HOA Dues
-
Year Built
-

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Cap Rate Calculator

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Cap Rate 100% Occupancy
N/A (extreme outlier)

What does this mean?

Based on our analysis, the cap rate of this property is 1.25%. A negative cap rate indicates that the property might not be feasible as an income-producing asset. The median cap rate for a near zip code 11238 is 4.23%.

How much can I actually make?

Actual monthly rental income may vary between $4,760 and $7,140 depending on unit-specific characteristics. You can change the amount using the slider to further explore.

How is cap rate calculated?

Cap Rate = Net Operating Income (NOI) / Property Asset Value.

When calculating the cap rate, we assume 100% occupancy. Leverage (mortgage) is not considered.

Cap Rate provided by RealtyHop and RentHop, learn more about cap rate here.

Last updated: 2 years ago (OneKey MLS #KEY833858)

Price History

Date / Event Date Event Price
Sep 2, 2025 Sold
Premium
Sold
Apr 10, 2025 In contract -
In contract
Mar 21, 2025 In contract -
In contract
Mar 11, 2025 Listed by Signature Premier Properties $549,999
Listed by Signature Premier Properties
Mar 17, 2004 Sold
Premium
Sold

Property Highlights

Fireplace

Building Info

Overview

    General

  • Bedroom Count: 0
  • Building Condition: 0
  • Building Quality: 0
  • Construction Type: 0
  • Building Style: 0
  • Exterior Walls Type: 0
  • Interior Walls Type: 0
  • Roof Shape Type: 0
  • Roof Cover Type: 0
  • Floor Cover: 0
  • Basement Type: 0
  • Basement Area: 0
  • Garage Type: 0
  • Parking Space Count: 0
  • Patio Type: 0
  • Porch Type: 0
  • Pool Type: 0

    Dimensions

  • Lot Size Square Feet: 10,890
  • Lot Size Depth Feet: 1,270
  • Lot Size Frontage Feet: 870
  • Total Building Area: 0
  • Building Area: 0

    Heating and Cooling

  • Air Conditioning: 0
  • Heating: 0
  • Heating Fuel Type: 0

    Utilities

  • Sewer System: 0
  • Water Service: 0

Building

  • Building Type: 0
  • Property Class: R
  • Land Acres: 0000000250
  • Standard Land Use Code: 1001
  • County Land Use Code: 210
  • Legal Description 1: X2222865Y208301 T012H00000000

Neighborhood

  • School District Name: Central Islip Union Free School District
  • School Tax School District: CENTRAL ISLIP
  • Census Tract: 145706

Zoning

  • Zoning: B

Geography

  • District: 0500-0
  • Section: 50.09
  • Parcel: 0500-099.00-02.00-024.000
  • Block: 9000
  • Lot: 200.024
  • Municipality: ISLIP
  • Latitude: 40.7946
  • Longitude: -73.1947

    Address

  • Full Address: 23 William St
  • Address - House Number: 23
  • Address - Street Name: William
  • Address - Suffix Type: St
  • State: NY
  • City Name: Central Islip
  • Carrier Code: C031
  • 4-Digit Zip Code: 2404
  • Zip Code: 11722

Valuation

    Tax

  • Tax Year: 2022
  • Tax Amount: $0
  • Tax Rate Code Area: 472813

    Appraisal Valuation

  • Standard Deviation: 0.2549
  • Valuation Date: Feb 14, 2024
  • Confidence Score: 63
  • Final Value: 523,888
  • High Value: 657,440
  • Low Value: 390,336

    Market Valuation

  • Market Total Value: $340,659
  • Market Land Value: $96,154
  • Market Improvement Value: $244,505

    Assessments Valuation

  • Assessed Year: 2023
  • Assessed Total Value: $24,800
  • Assessed Land Value: $7,000
  • Assessed Improvements Value: $17,800

    Sales

  • Current Sale Contract Date: Mar 02, 2004
  • Current Sale Recording Date: Mar 17, 2004
  • Current Sale Price:
    Premium
  • Current Sale Document Type: 12
Data used for valuation calculations is provided by RealtyHop, and other third party sources
Request mortgage information redaction

Comparables

Unit
Status
Type
Beds
Baths
ft²
Price/ft²
Asking Price
Listed On
Closing Price
Sold On
HOA + Taxes

About Central Islip

Stats & Trends

Median Asking:

$579,000

Sale Price/ft²

$391

Below Asking

0.01%

Average Days on Market

92

Average Home Size

1612 ft²

Average Home Age

61 years

Currently For Sale

40 Listings
Based on RH Advisors, Inc. calculations of home data from MLS and/or public records.

Similar Homes for Sale

Currently no similar homes around

Nearby Rentals

Rentals Near You

Click here to view more rentals in the neighborhood.
OneKey

Last Updated: 2 years ago
Data Source: OneKey MLS

Frequently Asked Questions

When was property at 23 William Street built and last sold?
The property at 23 William Street was built in and last sold on Mar 2, 2004 for $280,000.
How much is this home worth?
The estimated value of the home located at 23 William Street is $550,628.
What are some comparable homes to 23 William Street?
There are currently no comparable homes to 23 William Street.
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