Suffolk County  »  11722  »  William Ave  »  66 William Ave

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

Also known as: 66 William Ave

Property image for 66 William Avenue, Central Islip, NY 11722
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Property type

Two Family Year-Round Residence (220)

Year built

1957

Acreage

0.2

Sale price

$281,000

General information

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Access up-to-date information from property owner names to sales history, deeds, tax info, mortgages, development data, planimetric maps and more.

Address
Primary address
66 William Avenue
ZIP code
11722
County
Suffolk
Village (SWIS code)
472889
Parcel ID
99-1-57

Owner

Find out who owns 66 William Avenue, Central Islip, NY 11722. Uncover corporate and individual owners with a free account.

Sales
Sale date
09/22/2017
Sale price
$281,000
Arm's length
Tax
Tax year
2025-2026
Current property tax
$10,836
Zoning & Use
Zoning
Residential (B)
Building
Property type
Two Family Year-Round Residence (220)
Building sq. ft.
1,821
Year built
1957
Lot
Acreage
0.2

Area overview

Walk score
55 /100.  Somewhat Walkable
Transit score
0 /100.  Minimal Transit
Bike score
48 /100.  Somewhat Bikeable
School district
472813

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

Ownership

Ownership information for 66 William Avenue, Central Islip, NY

Property owner name
Registered owner
Source
Deed
Owner contact information
Phone number
Owner address
Documents

Sales history for 66 William Avenue, Central Islip, NY 11722

Sale date Sale price Buyer name Seller name
09/22/2017 $281,000 XXXXXX XXXXX XXXXXXX X; XXXXXXX XXXXX XXXXX XXXXX; XXXXXX XXXXX
07/02/2014 $163,000 XXXXX XXXXX; XXX XXX XXXXX XXXXXX XXX XXXXXXXX XXX
05/11/2012 $136,000 XXXXXX XXX XXXXXXXX XXX XXXXXXX XXXX XXXX XXXXXXXX XXXXXXXXXXX

*Most recent sales on record for this property.

More about Suffolk County property records.

Title documents

Date Type Amount Party 1 Party 2
10/31/2017 - R
09/22/2017 - D		 Deed XXXXX XXXXX XXXXXX XXXXX XXXXXXX X
07/25/2014 - R
07/02/2014 - D		 Deed XXXXXX XXX XXXXXXXX XXX XXXXX XXXXX
06/22/2012 - R
05/11/2012 - D		 Deed XXXXXXX XXXX XXXX XXXXXXXX XXXXXXXXXXX XXXXXX XXX XXXXXXXX XXX
08/10/2011 - R
07/12/2011 - D		 Deed XXXX XXXXX XXXXXXX XXXX XXXX XXXXXXXX XXXXXXXXXXX

*Most recent recorded documents on file for this property.

R: Recorded date
D: Document date

Tax

Property taxes for 66 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
$10,836
Recent tax assessments
Market value
$500,704
Assessed value
$35,550

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 $500,704 $35,550 30.481 $10,836 +3.08%
2024-2025 $500,704 $35,550 29.569 $10,512 +5.71%
2023-2024 $488,324 $35,550 27.973 $9,944 -1.12%
2022-2023 $429,348 $35,550 28.29 $10,057 +0.97%
2021-2022 $383,082 $35,550 28.019 $9,961 -2.89%
2020-2021 $366,495 $35,550 28.854 $10,258 +3.66%
2019-2020 $313,216 $35,550 27.834 $9,895 +4.38%
2018-2019 $313,216 $35,550 26.667 $9,480 +0.58%
2017-2018 $293,317 $35,550 26.513 $9,425 +3.23%
2016-2017 $279,921 $35,550 25.684 $9,131 -1.73%
Permits

Permit information for 66 William Avenue, Central Islip, NY

No recently recorded permits for this property.

Neighborhood

Risk

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FEMA flood zones

FEMA flood zones
X

Transportation

Daily traffic map
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Access the detailed traffic volume map for 66 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)
Charles A Mulligan School 4 Public K-6 981 0.23
Francis J O Neill School 5 Public K-6 614 0.43
Anthony Alfano Elementary School 5 Public PK, K-6 586 0.49
Anthony Alfano Elementary School 5 Public PK, K-6 586 0.49
Our Lady Of Providence Regional School NR Private PK-8 251 0.62
Our Lady Of Providence Regional School NR Private PK-8 251 0.62
Cordello Avenue Elementary School 4 Public K-6 507 0.92
Andrew T Morrow School 3 Public K-6 795 1.27
Marguerite L Mulvey School 5 Public K-6 526 1.30
Bretton Woods Elementary School 7 Public PK, K-5 512 1.31
Nearest middle schools

Name Rating Type Grade range No of students Distance (miles)
Ralph Reed School 3 Public 7-8 1,149 0.32
Our Lady Of Providence Regional School NR Private PK-8 251 0.62
Gersh Academy NR Private 6-12 0 1.48
Hauppauge Middle School 6 Public 6-8 748 2.02
East Middle School 4 Public 6-8 1,159 2.16
Ivy League School NR Private PK-8 224 2.40
Ivy League School NR Private PK-8 253 2.40
MDQ Academy NR Private PK-12 412 2.82
East Islip Middle School 6 Public 6-8 804 3.29
Ronkonkoma Middle School 8 Public 6-8 672 3.32
Nearest high schools

Name Rating Type Grade range No of students Distance (miles)
Central Islip Senior High School 3 Public 9-12 2,576 0.53
Gersh Academy NR Private 6-12 0 1.48
Hauppauge High School 9 Public 9-12 1,079 1.88
MDQ Academy NR Private PK-12 412 2.82
Connetquot High School 8 Public 9-12 1,757 3.16
East Islip High School 8 Public 9-12 1,145 3.18
Brentwood High School 3 Public 9-12 4,641 3.42
Freshman Center NR Public 9 1,247 3.76
Smithtown Christian School NR Private PK, K-12 529 3.81
Developmental Disabilities Institute NR Private 222 3.97

Data provided by GreatSchools.org © 2026. All rights reserved.

Neighbors for 66 William Avenue, Central Islip, NY

2 Hawthorne Ave, Central Islip 11 Weeks Ave, Central Islip 4 Pineville Rd, Central Islip 38 William Ave, Central Islip 5159 Hawthorne Ave, Central Islip 12 A Weeks Ave, Central Islip 31 Pineville Rd, Central Islip 18 Pineville Rd, Central Islip 10 Pineville Rd, Central Islip 60 E Suffolk Ave, Central Islip 90 Suffolk Ave, Central Islip 24 Pineville Rd, Central Islip 4 Weeks Ave, Central Islip 14 Weeks Ave, Central Islip 29 A Pineville Rd, Central Islip 92 Suffolk Ave, Central Islip 10 William St, Central Islip 25 Weeks Ave, Central Islip 15 Weeks Ave, Central Islip 26 Hawthorne Ave, Central Islip

Nearby ZIP codes for 66 William Avenue, Central Islip, NY

11706, Suffolk County, NY 11716, Suffolk County, NY 11717, Suffolk County, NY 11718, Suffolk County, NY 11725, Suffolk County, NY 11730, Suffolk County, NY 11739, Suffolk County, NY 11749, Suffolk County, NY 11751, Suffolk County, NY 11752, Suffolk County, NY 11754, Suffolk County, NY 11755, Suffolk County, NY 11767, Suffolk County, NY 11769, Suffolk County, NY 11779, Suffolk County, NY 11780, Suffolk County, NY 11787, Suffolk County, NY 11788, Suffolk County, NY 11795, Suffolk County, NY 11796, Suffolk County, NY

Frequently asked questions

What is the year built for 66 William Avenue, Central Islip, NY 11722?

The development at 66 William Avenue, Central Islip, NY 11722 was built in 1957.

What is the total square footage of 66 William Avenue, Central Islip, NY 11722?

66 William Avenue, Central Islip, NY 11722 has a total of 1,821 square feet.

When was 66 William Avenue, Central Islip, NY 11722 last sold and what was the sale price?

66 William Avenue, Central Islip, NY 11722 was last sold on 09/22/2017 for $281,000.

What is the assessed value of 66 William Avenue, Central Islip, NY 11722?

66 William Avenue, Central Islip, NY 11722 is currently assessed at $35,550.

What are the property taxes for 66 William Avenue, Central Islip, NY 11722?

The property taxes for 66 William Avenue, Central Islip, NY 11722 total $10,835.

How many residential units does this building have?

This building has 2 residential unit(s).

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