Nassau County  »  11579  »  Prospect Ave  »  20 Prospect Ave

20 Prospect Avenue, Sea Cliff, NY 11579 - Property report

Also known as: 20 Prospect Ave

Property image for 20 Prospect Avenue, Sea Cliff, NY 11579
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Property type

One Family Year - Round Residence (210.01)

Year built

1903

Acreage

0.293

General information

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Address
Primary address
20 Prospect Avenue
ZIP code
11579
County
Nassau
Town/City
Glen Cove
Village (SWIS code)
Glen Cove
Parcel ID
21-C-129.A

Owner

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Tax
Tax year
2026
Current property tax
$779
Tax class
Zoning & Use
Zoning
R-5
Qualified opportunity zone
Building
Property type
One Family Year - Round Residence (210.01)
Building sq. ft.
2,648
Buildings on lot
1
Stories
2
Year built
1903
Rooms
7
Bathrooms
2
Exterior wall
Frame
Building style
Old Style
Basement
Full
Attic
None
Fireplaces
1
Heating type
Central/AC
Heating system
Central w ac
Lot
Acreage
0.293
Topography
Level
Land
Water view

Area overview

Walk score
72 /100.  Very Walkable
Transit score
0 /100.  Minimal Transit
Bike score
26 /100.  Somewhat Bikeable
School district
4005

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

Ownership

Ownership information for 20 Prospect Avenue, Sea Cliff, NY

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

Sales history for 20 Prospect Avenue, Sea Cliff, NY 11579

No recently recorded sales for this property.

More about Nassau County property records.

Title documents

No recently recorded documents for this property.

Tax

Property taxes for 20 Prospect Avenue, Sea Cliff, 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
$779
Base tax
$1,003
Recent tax assessments
Market value
$574,000
Assessed value
$574
Transitional assessed value
Exemptions

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 $574,000 $574 174.77 $1,003 -11.32%
2025 $594,000 $594 190.443 $1,131 -16.08%
2024 $610,000 $610 220.977 $1,348 -3.80%
2023 $610,000 $610 229.713 $1,401 +10.25%
2022 $610,000 $610 208.364 $1,271 -31.54%
2021 $632,000 $632 293.766 $1,857 +74.27%
2020 $344,400 $861 123.734 $1,065 -0.68%
2019 $368,800 $922 116.344 $1,073 -5.08%
2018 $393,600 $984 114.842 $1,130 +0.60%
2017 $418,000 $1,045 107.498 $1,123 -4.71%
Permits

Permit information for 20 Prospect Avenue, Sea Cliff, NY

No recently recorded permits for this property.

Neighborhood

Glen Cove residential market stats

Access a detailed real estate market overview of Glen Cove so you can assess current trends, home values, types of properties sold and transaction volume. View the median home sale price in Glen Cove and compare it to other neighborhoods in Nassau.

Median sale price

$815,000

-6.8% Y-o-Y

Median price/sq. ft.

$480

21.5% Y-o-Y

Nassau county median sale price

$800,000

5.3% Y-o-Y

Check out recently sold homes in Glen Cove and see how their prices compare.

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)
Sea Cliff Elementary School 8 Public K-5 343 0.51
Tiegerman Elementary School NR Private 1-5 136 0.63
Landing School 4 Public PK, 3-5 349 0.74
Landing School 4 Public PK, 3-5 349 0.74
North Shore Senior High School 9 Public K-5, 9-12 764 1.23
North Shore Middle School 9 Public K-8 646 1.31
All Saints Regional Catholic School NR Private PK-8 166 1.40
All Saints Regional Catholic School NR Private PK-8 166 1.40
Deasy School NR Public PK, K-2 364 1.50
Deasy School NR Public PK, K-2 364 1.50
Nearest middle schools

Name Rating Type Grade range No of students Distance (miles)
North Shore Middle School 9 Public K-8 646 1.31
All Saints Regional Catholic School NR Private PK-8 166 1.40
Robert M Finley Middle School 5 Public 6-8 710 1.56
North Shore Day School NR Private 0 1.74
St. Peter of Alcantara School NR Private PK-8 162 2.35
Friends Academy NR Private PK-12 765 2.75
Carrie Palmer Weber Middle School 7 Public 6-8 1,216 2.81
Vincent Smith School NR Private 2-12 46 3.20
Locust Valley Middle School 8 Public 6-8 472 3.70
Roslyn Middle School 8 Public 6-8 766 4.88
Nearest high schools

Name Rating Type Grade range No of students Distance (miles)
North Shore Senior High School 9 Public K-5, 9-12 764 1.23
North Shore Day School NR Private 0 1.74
Glen Cove High School 5 Public 9-12 1,050 2.13
Paul D Schreiber Senior High School 9 Public 9-12 1,613 2.36
Friends Academy NR Private PK-12 765 2.75
Vincent Smith School NR Private 2-12 46 3.20
Portledge School NR Private PK-12 522 3.52
Locust Valley High School 9 Public 9-12 629 3.70
Roslyn High School 9 Public 9-12 1,035 4.17
Manhasset Secondary School 10 Public 9-12 962 4.89

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

Neighbors for 20 Prospect Avenue, Sea Cliff, NY

8 Beverly Pl, Glen Cove 175 Shore Rd, Glen Cove 6 Prospect Ave, Sea Cliff 1 Beverly Rd, Glen Cove 8 Albin St, Glen Cove 18 Prospect Ave, Sea Cliff 125 Shore Rd, Glen Cove 5 Beverly Rd, Glen Cove 6 Bevesly Pl, Glen Cove 119 Shore Rd, Glen Cove 159 Shore Rd, Glen Cove 157 Shore Rd, Glen Cove 153 Shore Rd, Glen Cove 10 Albin St, Glen Cove 123 Shore Rd, Glen Cove 117 Shore Rd, Glen Cove 6 Albin St, Glen Cove 16 Prospect Ave, Sea Cliff 155 Shore Rd, Glen Cove 127 Shore Rd, Glen Cove

Nearby ZIP codes for 20 Prospect Avenue, Sea Cliff, NY

11020, Nassau County, NY 11023, Nassau County, NY 11024, Nassau County, NY 11030, Nassau County, NY 11042, Nassau County, NY 11501, Nassau County, NY 11507, Nassau County, NY 11514, Nassau County, NY 11542, Nassau County, NY 11545, Nassau County, NY 11547, Nassau County, NY 11548, Nassau County, NY 11560, Nassau County, NY 11568, Nassau County, NY 11576, Nassau County, NY 11577, Nassau County, NY 11596, Nassau County, NY 11732, Nassau County, NY 11765, Nassau County, NY

Frequently asked questions

What is the year built for 20 Prospect Avenue, Sea Cliff, NY 11579?

The development at 20 Prospect Avenue, Sea Cliff, NY 11579 was built in 1903.

What is the total square footage of 20 Prospect Avenue, Sea Cliff, NY 11579?

20 Prospect Avenue, Sea Cliff, NY 11579 has a total of 2,648 square feet.

What is the assessed value of 20 Prospect Avenue, Sea Cliff, NY 11579?

20 Prospect Avenue, Sea Cliff, NY 11579 is currently assessed at $574.

What are the property taxes for 20 Prospect Avenue, Sea Cliff, NY 11579?

The property taxes for 20 Prospect Avenue, Sea Cliff, NY 11579 total $1,003.

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