Suffolk County » 11722 » William Ave » 27 William Ave

27 William Avenue, Central Islip, NY 11722 - Property report

Also known as: 27 William Ave

Property image for 27 William Avenue, Central Islip, NY 11722

Property type

One Family Year-Round Residence (210)

Year built

1948

Acreage

0.18

Sale price

$630,000

General information

Address

Primary address

27 William Avenue

ZIP code

11722

County

Suffolk

Village (SWIS code)

472889

Parcel ID

78-4-66

Sales

Sale date

08/05/2025

Sale price

$630,000

Arm's length

Tax

Tax year

2025-2026

Current property tax

$8,687

Zoning & Use

Zoning

Residential (B)

Building

Property type

One Family Year-Round Residence (210)

Year built

1948

Lot

Acreage

0.18

Area overview

Walk score

57 /100. Somewhat Walkable

Transit score

0 /100. Minimal Transit

Bike score

49 /100. Somewhat Bikeable

School district

472813

View more such as transportation, nearby schools and risk designations.

Ownership

Ownership information for 27 William Avenue, Central Islip, NY

Property owner name

Registered owner

Source

Deed

Owner contact information

Phone number

Owner address

Documents

Sales history for 27 William Avenue, Central Islip, NY 11722

Sale date	Sale price	Buyer name	Seller name
08/05/2025	$630,000	XXXX XXXXXXXXX XXXXXXXXX X; XXXXXX XXXXXXXXX XXXXXX; XXXXXX XXXXXXXXX XXXXXXXXX	XXXXXXX XXXXXXXXX XXXXX; XXXX XXXXXXXXX XXXXXXX; XXXXX XXXXX XX XXXXXXXXX
09/29/2023	$500,000	XXXXXXXXX XXXXXXX XXXX	XXXXXXX XXXXXXXXX
10/15/2014	$190,000	XXXXXXXXX XXXXXXX X; XXXXX XXXXX	XX XXXX XXXXXX XXX

*Most recent sales on record for this property.

More about Suffolk County property records.

Title documents

Date	Type	Party 1	Party 2
11/19/2025 - R 08/05/2025 - D	Deed	XXXXXXX XXXXXXXXX XXXXX	XXXX XXXXXXXXX XXXXXXXXX X
11/19/2025 - R	Mortgage	XXXX X XXXXXXXXX	XXXXXXXXXX XXX XXXXXX
09/18/2025 - R 08/18/2025 - D	Discharge	XXXXXXX XXXXXXX XXXX	XXXXXXX XXXXXXX XXXX
10/31/2023 - R 09/29/2023 - D	Deed	XXXXXXX XXXXXXXXX	XXXXXXXXX XXXXXXX XXXX
11/17/2014 - R 10/15/2014 - D	Deed (Bargain and Sale)	XX XXXX XXXXXX XXX	XXXXXXXXX XXXXXXX X
12/10/2013 - R 11/26/2013 - D	Deed (Bargain and Sale)	XXXXXX XXX	XX XXXX XXXXXX XXX
09/24/2013 - R 08/19/2013 - D	Deed (Foreclosure)	XXXXXXX XXXXXXX X	XXXXXX XXX
09/18/2001 - R 09/06/2001 - D	Deed	XXXXXX XXXXXXX/XXXXX	XXXXXXX XXXXXXX X

*Most recent recorded documents on file for this property.

R: Recorded date
D: Document date

Tax

Property taxes for 27 William Avenue, Central Islip, NY

Property tax data includes tax amount, market value and assessed value, exemptions, abatements and assessment history.

Current property tax

Tax year

2025-2026

Property tax

$8,687

Recent tax assessments

Market value

$401,409

Assessed value

$28,500

More about Suffolk County property taxes

Assessment history

See the assessment and property tax history, including the evolution of the total tax rate and corresponding property tax amount.

Tax year	Market value	Assessed value	Tax rate	Property tax	Y-o-Y change
2025-2026	$401,409	$28,500	30.481	$8,687	+3.08%
2024-2025	$401,409	$28,500	29.569	$8,427	+11.58%
2023-2024	$370,879	$27,000	27.973	$7,553	-1.12%
2022-2023	$326,087	$27,000	28.29	$7,638	+0.97%
2021-2022	$290,948	$27,000	28.019	$7,565	-2.89%
2020-2021	$278,351	$27,000	28.854	$7,791	+3.66%
2019-2020	$237,885	$27,000	27.834	$7,515	+4.38%
2018-2019	$237,885	$27,000	26.667	$7,200	+0.58%
2017-2018	$222,772	$27,000	26.513	$7,159	+3.23%
2016-2017	$212,598	$27,000	25.684	$6,935	-1.73%

Permits

Permit information for 27 William Avenue, Central Islip, NY

No recently recorded permits for this property.

Neighborhood

Risk

Create a free account to unlock expanded risk information, such as crime incidents in the area, tsunami and landslides risks, or its location relative to FEMA flood zones and the Coastal Barriers Resources System Area (COBRA).

FEMA flood zones

FEMA flood zones

Transportation

Daily traffic map

View daily traffic map

Access the detailed traffic volume map for 27 William Avenue, Central Islip, NY 11722 to see estimated average daily traffic on streets surrounding the property as well as the types of properties in its vicinity.

Schools

Nearest elementary schools

Name	Rating	Type	Grade range	No of students	Distance (miles)
Anthony Alfano Elementary School	5	Public	PK, K-6	586	0.30
Anthony Alfano Elementary School	5	Public	PK, K-6	586	0.30
Charles A Mulligan School	4	Public	K-6	981	0.41
Francis J O Neill School	5	Public	K-6	614	0.48
Our Lady Of Providence Regional School	NR	Private	PK-8	251	0.56
Our Lady Of Providence Regional School	NR	Private	PK-8	251	0.56
Cordello Avenue Elementary School	4	Public	K-6	507	0.82
Bretton Woods Elementary School	7	Public	PK, K-5	512	1.29
Bretton Woods Elementary School	7	Public	PK, K-5	512	1.29
Marguerite L Mulvey School	5	Public	K-6	526	1.38

Nearest middle schools

Name	Rating	Type	Grade range	No of students	Distance (miles)
Ralph Reed School	3	Public	7-8	1,149	0.48
Our Lady Of Providence Regional School	NR	Private	PK-8	251	0.56
Gersh Academy	NR	Private	6-12	0	1.57
East Middle School	4	Public	6-8	1,159	1.98
Hauppauge Middle School	6	Public	6-8	748	2.05
Ivy League School	NR	Private	PK-8	224	2.41
Ivy League School	NR	Private	PK-8	253	2.41
MDQ Academy	NR	Private	PK-12	412	2.65
South Middle School	3	Public	6-8	1,033	3.21
East Islip Middle School	6	Public	6-8	804	3.31

Nearest high schools

Name	Rating	Type	Grade range	No of students	Distance (miles)
Central Islip Senior High School	3	Public	9-12	2,576	0.37
Gersh Academy	NR	Private	6-12	0	1.57
Hauppauge High School	9	Public	9-12	1,079	1.89
MDQ Academy	NR	Private	PK-12	412	2.65
East Islip High School	8	Public	9-12	1,145	3.20
Brentwood High School	3	Public	9-12	4,641	3.24
Connetquot High School	8	Public	9-12	1,757	3.34
Freshman Center	NR	Public	9	1,247	3.57
Smithtown Christian School	NR	Private	PK, K-12	529	3.81
Developmental Disabilities Institute	NR	Private		222	3.95

Frequently asked questions

What is the year built for 27 William Avenue, Central Islip, NY 11722?

The development at 27 William Avenue, Central Islip, NY 11722 was built in 1948.

When was 27 William Avenue, Central Islip, NY 11722 last sold and what was the sale price?

27 William Avenue, Central Islip, NY 11722 was last sold on 08/05/2025 for $630,000.

What is the assessed value of 27 William Avenue, Central Islip, NY 11722?

27 William Avenue, Central Islip, NY 11722 is currently assessed at $28,500.

What are the property taxes for 27 William Avenue, Central Islip, NY 11722?

The property taxes for 27 William Avenue, Central Islip, NY 11722 total $8,687.

Disclaimer

All data comes from government sources. No attempt has been made to validate it. No attempt has been made to validate the accuracy of the programming of this website.

Do not rely on this report to support investment decisions. The only authoritative source for the information in this report is the government agencies from which the data was acquired.