When was property at 12 William Street built and last sold?

The property at 12 William Street was built in and last sold on Oct 22, 2003 for $262,000.

How much is this home worth?

The estimated value of the home located at 12 William Street is $656,499.

What are some comparable homes to 12 William Street?

There are currently no comparable homes to 12 William Street.

Central Islip

11722

Central Islip

12 William Street

$469,000

● House - Off Market

12 William Street

Islip, NY 11722

5 Beds

2 Baths

$3,199

Est. Monthly

About This Property

**Excellent Investment Opportunity** This property, in good condition, presents a fantastic investment opportunity, perfect for a large family. The home boasts 5 bedrooms, 2 full baths, and the potential for a mother-daughter setup with the appropriate permits. It includes private parking, a lot size of 75x100 ft, and a building size of 1,820 sq ft. Benefit from low taxes and a prime location close to schools, malls, shops, restaurants, transportation, and major parkways. Don't miss out on this exceptional property!, Additional information: Appearance:Good

Unit Size

Days on Market

Land Size

0.17 acres

Price per sqft

Property Type

House

Property Taxes

$895

HOA Dues

Year Built

Payment Calculator

Cap Rate Calculator

Last updated: 5 months ago (OneKey MLS #KEYL3556836)

Price History

Date / Event	Date	Event
Jun 13, 2025	Sold	Premium
Sold
Apr 29, 2025	In contract	-
In contract
Mar 17, 2025	Price Decreased	$649,999 ↓ $50K (7.1%)
Price Decreased
Feb 9, 2025	Listed by Keller Williams Realty Elite	$699,999
Listed by Keller Williams Realty Elite

	Welcome to 12 William St in Central Islip! This beautifully updated 5-bedroom, 3-bathroom home is truly must-see. The first level features a modern, updated kitchen with stainless appliances, quartz countertops, LED lighting, and new oak floors. The primary bedroom boasts a double closet, while an additional bedroom and updated bathroom on the first floor provide convenience and comfort. The second level features 3 bedrooms and updated bathroom. The full, finished basement with outside entrance offers a laundry room, additional storage space, and endless possibilities for use. With a new roof, on-demand hot water system, and ductless AC/heating units, this home is as practical as it is stunning.
Jul 18, 2024	Sold	Premium
Sold
Jul 11, 2024	In contract	-
In contract
Jun 5, 2024	Listed by Best American Homes Inc	$469,000
Listed by Best American Homes Inc

	Excellent Investment Opportunity This property, in good condition, presents a fantastic investment opportunity, perfect for a large family. The home boasts 5 bedrooms, 2 full baths, and the potential for a mother-daughter setup with the appropriate permits. It includes private parking, a lot size of 75x100 ft, and a building size of 1,820 sq ft. Benefit from low taxes and a prime location close to schools, malls, shops, restaurants, transportation, and major parkways. Don't miss out on this exceptional property!
Nov 7, 2003	Sold	Premium
Sold

Property Highlights

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: 7,405

Lot Size Frontage Feet: 750
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: 0000000170
Standard Land Use Code: 1001
County Land Use Code: 210
Legal Description 1: X2222753Y208043 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: 0500-099.00-02.00-017.000
Block: 9000
Lot: 200.017
Municipality: ISLIP
Latitude: 40.7938
Longitude: -73.1951

Address

Full Address: 12 William St

Address - House Number: 12
Address - Street Name: William
Address - Suffix Type: St
State: NY
City Name: Central Islip
Carrier Code: C031
4-Digit Zip Code: 2405
Zip Code: 11722

Valuation

Tax

Tax Year: 2023

Tax Amount: $1,074,514
Tax Rate Code Area: 472813

Appraisal Valuation

Standard Deviation: 0.2549

Valuation Date: Feb 14, 2024
Confidence Score: 63
Final Value: 482,201
High Value: 605,126
Low Value: 359,276

Open Liens

Total Open Liens:

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Market Valuation

Market Total Value: $464,973

Market Land Value: $81,044
Market Improvement Value: $383,929

Assessments Valuation

Assessed Year: 2023

Assessed Total Value: $33,850
Assessed Land Value: $5,900
Assessed Improvements Value: $27,950

Sales

Current Sale Contract Date: Oct 22, 2003

Current Sale Recording Date: Nov 07, 2003
Current Sale Price:

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Current Sale Document Type: 12

Last Sale Mortgage

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Data used for valuation calculations is provided by RealtyHop, and other third party sources

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Comparables

About Central Islip

Stats & Trends

Median Asking:

$579,000

Sale Price/ft²

$392

Above Asking

0.00%

Average Days on Market

Average Home Size

1640 ft²

Average Home Age

57.6 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

Unit for rent at 257 Southlawn Avenue, Central Islip, NY, 11722

$5,950 /mo

3 Beds
2 Baths
1,610 ft²

257 Southlawn Avenue, Central Islip, NY, 11722 Listing by Nicole N. Kurt

Unit for rent at 300 Carleton Avenue, Central Islip, NY, 11722

$3,695 /mo

2 Beds
2 Baths
1,108 ft²

300 Carleton Avenue #7213, Central Islip, NY, 11722 Listing by Rita B. Bender

Unit for rent at 433 Lincoln Boulevard, Hauppauge, NY, 11788

$2,650 /mo

1 Bed
1 Bath
720 ft²

433 Lincoln Boulevard #12L, Hauppauge, NY, 11788 Listing by Michelle Holmes

Rentals Near You

Click here to view more rentals in the neighborhood.

Last Updated: 5 months ago
Data Source: OneKey MLS

12 William Street

About This Property

Price History

Property Highlights

Building Info

Overview

Building

Neighborhood

Zoning

Geography

Valuation

Comparables

About Central Islip

Stats & Trends

Similar Homes for Sale

Nearby Rentals

Frequently Asked Questions