Nassau County  »  21 William Rd

21 William Road, Massapequa, NY 11758 - Property report

Also known as: 21 William Rd

Property image for 21 William Road, Massapequa, NY 11758
static Mapbox map

Property type

One Family Year - Round Residence (210.01)

Year built

1953

Acreage

0.145

Sale price

$727,000

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
21 William Road
ZIP code
11758
County
Nassau
Town/City
Oyster Bay
Village (SWIS code)
None (unincorporated town)
Parcel ID
52-392-3

Owner

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Sales
Sale date
07/25/2025
Sale price
$727,000
Arm's length
Tax
Tax year
2026
Current property tax
$14,539
Tax class
Zoning & Use
Zoning
R1-7
Building
Property type
One Family Year - Round Residence (210.01)
Building sq. ft.
1,008
Buildings on lot
1
Stories
1
Year built
1953
Rooms
5
Bathrooms
1
Exterior wall
Alum/Vinyl
Building style
Ranch
Basement
Full
Attic
None
Heating type
Central
Heating system
Hot water
Lot
Acreage
0.145
Topography
Level
Land
Primary site

Area overview

Walk score
51 /100.  Somewhat Walkable
Transit score
16 /100.  Minimal Transit
Bike score
41 /100.  Somewhat Bikeable
School district
3018

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

Ownership

Ownership information for 21 William Road, Massapequa, NY

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

Sales history for 21 William Road, Massapequa, NY 11758

Sale date Sale price Buyer name Seller name
07/25/2025 $727,000 XXXXXXXXX XXXXXXX; XXXXX XXXXXXX; XXXXXXXXX XXXXXX; XXXXXXXXX XXXXXXX XXXXXX XXXXX X
11/29/1993 $153,000 XXXXXX XXXXX XXXXXXXX XXXXXXX

*Most recent sales on record for this property.

More about Nassau County property records.

Title documents

Date Type Amount Party 1 Party 2
08/22/2025 - R Other
(Mortgage Satisfaction)		 XXXXXX XXXXX X XXXXXXXX XXXXX XXXX XX
08/14/2025 - R
07/25/2025 - D		 Deed
(Deed-Deed)		 XXXXXX XXXXX X XXXXXXXXX XXXXXXX
08/14/2025 - R
07/25/2025 - D		 Mortgage
(Mtg-Mortgage)		 XXXXXXXXX XXXXXXX XXX XXXXXX XXXXXXX XXXX
08/14/2025 - R Deed Agreement
(Agreement Deed)		 XXXXXXX XXXX XXXXXX XXXXXXX X
12/09/1993 - R
11/29/1993 - D		 Deed XXXXXXXX XXXXXXX XXXXXX XXXXX

*Most recent recorded documents on file for this property.

R: Recorded date
D: Document date

Tax

Property taxes for 21 William Road, Massapequa, NY

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

Current property tax
Tax year
2026
Current property tax
$14,539
Base tax
$15,632
Current school tax
Recent tax assessments
Market value
$475,000
Assessed value
$475
Transitional assessed value

More about Nassau 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
2026 $475,000 $475 3291.003 $15,632 +2.37%
2025 $475,000 $475 3214.747 $15,270 -7.02%
2024 $474,841 $475 3457.576 $16,423 -5.68%
2023 $475,000 $475 3665.913 $17,413 -11.22%
2022 $475,000 $475 4129.183 $19,614 -11.25%
2021 $455,000 $455 4856.978 $22,099 +32.66%
2020 $308,800 $772 2157.788 $16,658 +6.50%
2019 $308,800 $772 2026.124 $15,642 +6.76%
2018 $308,800 $772 1897.836 $14,651 +4.29%
2017 $308,800 $772 1819.721 $14,048 +6.57%
Permits

Permit information for 21 William Road, Massapequa, 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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Schools

Nearest elementary schools

Name Rating Type Grade range No of students Distance (miles)
The Hagedorn Little Village School NR Private PK-6 268 0.16
The Hagedorn Little Village School NR Private PK-6 268 0.16
East Broadway School 6 Public K-5 676 0.50
Eastplain School 6 Public PK, K-5 431 0.56
Eastplain School 6 Public PK, K-5 431 0.56
John H West School 7 Public K-5 482 0.79
Maria Regina Elementary School NR Private PK-8 345 0.93
Maria Regina Elementary School NR Private PK-8 345 0.93
Charles E Schwarting School 4 Public K-5 457 1.01
Albany Avenue Elementary School 8 Public K-5 507 1.20
Nearest middle schools

Name Rating Type Grade range No of students Distance (miles)
Maria Regina Elementary School NR Private PK-8 345 0.93
Jonas E Salk Middle School 7 Public 6-8 947 1.38
Island Trees Middle School 7 Public 5-8 657 1.40
Plainedge Middle School 6 Public 6-8 663 1.43
Seaford Middle School 9 Public 6-8 517 1.51
Mhs Ames Campus NR Public 9 442 1.72
Mosaic School NR Private 7 1.76
Wantagh Middle School 5 Public 6-8 682 1.95
Montessori Children's School NR Private 0 2.01
St William The Abbot School NR Private PK, K-8 536 2.33
Nearest high schools

Name Rating Type Grade range No of students Distance (miles)
Plainedge Senior High School 8 Public 9-12 845 0.64
Island Trees High School 9 Public 9-12 727 1.24
Gen Douglas Macarthur Senior High School 10 Public 9-12 1,277 1.31
Seaford Senior High School 9 Public 9-12 658 1.58
Mhs Ames Campus NR Public 9 442 1.72
Mosaic School NR Private 7 1.76
Farmingdale Senior High School 7 Public 9-12 1,703 1.95
Montessori Children's School NR Private 0 2.01
Wantagh Senior High School 9 Public 9-12 836 2.04
New Jerusalem Christian Academy NR Private 1-12 20 2.38

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

Neighbors for 21 William Road, Massapequa, NY

39 William Rd, Massapequa 63 William Rd, Massapequa 77 Daniel Rd, Massapequa 59 Daniel Rd, Massapequa 65 Daniel Rd N, Massapequa 33 William Rd, Massapequa 69 William Rd, Massapequa 75 William Rd, Massapequa 71 Daniel Rd N, Massapequa 81 William Rd, Massapequa 83 N Daniel Rd, Massapequa 2 Daniels Rd, Massapequa 53 Daniel Rd, Massapequa 2 Joseph Rd, Massapequa 27 William Rd, Massapequa 45 William Rd, Massapequa 57 William Rd, Massapequa 15 William Rd, Massapequa 51 William Rd, Massapequa 89 Daniel Rd, Massapequa

Nearby ZIP codes for 21 William Road, Massapequa, NY

11520, Nassau County, NY 11554, Nassau County, NY 11566, Nassau County, NY 11575, Nassau County, NY 11701, Suffolk County, NY 11702, Suffolk County, NY 11704, Suffolk County, NY 11714, Nassau County, NY 11726, Suffolk County, NY 11735, Nassau County, NY 11735, Suffolk County, NY 11756, Nassau County, NY 11757, Suffolk County, NY 11762, Nassau County, NY 11783, Nassau County, NY 11793, Nassau County, NY 11798, Suffolk County, NY 11801, Nassau County, NY 11804, Nassau County, NY

Frequently asked questions

What is the year built for 21 William Road, Massapequa, NY 11758?

The development at 21 William Road, Massapequa, NY 11758 was built in 1953.

What is the total square footage of 21 William Road, Massapequa, NY 11758?

21 William Road, Massapequa, NY 11758 has a total of 1,008 square feet.

When was 21 William Road, Massapequa, NY 11758 last sold and what was the sale price?

21 William Road, Massapequa, NY 11758 was last sold on 07/25/2025 for $727,000.

What is the assessed value of 21 William Road, Massapequa, NY 11758?

21 William Road, Massapequa, NY 11758 is currently assessed at $475.

What are the property taxes for 21 William Road, Massapequa, NY 11758?

The property taxes for 21 William Road, Massapequa, NY 11758 total $15,632.

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