| Primary address | 65 20th Avenue, Sea Cliff |
| Zip code | 11579 |
| County | Nassau |
| Town/City | Oyster Bay |
| Village (swiss code) | Sea Cliff |
| Parcel ID | 21-F-85 |
View detailed information on past sales, title documents and property taxes, including the assessed market value, in their dedicated tabs.
| Tax class | Register |
| Current property tax | $13,320 |
| Building sqft | 1,750 |
| Building class | One Family Year - Round Residence (210.01) |
| Land | Water view |
| Topography | Level |
| Acreage | 0.15 |
| Buildings on lot | 1 |
| Year built | 1863 |
| Stories | 2 |
| Style | Colonial |
| Rooms | 8 |
| Bathrooms | 1 |
| Half bathrooms | 1 |
| Attic | Unfinished |
| Basement | 1/2 Bsmt/Crawl |
| Exterior wall | Frame |
| Heating type | Central |
| Heating system | Hot water |
| Zoning district | Register (See more on map) |
| School district | Sea Cliff |
View more neighborhood information such as transportation, nearby schools and risk designations in the dedicated tab.
Property reports include comprehensive occupancy, improvement and development information (where available).
Create a free account to access valuable data points such as:
65 20th Avenue, Sea Cliff, NY 11579 was built in 1863 and has a total of 1,750 square feet.
What is the assessed value of 65 20th Avenue, Sea Cliff, NY 11579 and the property tax paid?Assessed at $731, the tax amount paid for 65 20th Avenue, Sea Cliff, NY 11579 is $15,555.
View detailed property contacts like owners, building management, representatives from permits and tenants with a free account.
Create a free account to view the complete sales history for 65 20th Avenue, Sea Cliff, including title documents, transfer conditions, mortgages and liens.
Access detailed property tax data for 65 20th Avenue, Sea Cliff, NY 11579. Tax information included: property tax, market value and assessed value, exemptions, abatements, and assessment history.
| Tax year | 2026 |
| Base tax | $15,556 |
| Current property tax | $13,321 |
| Tax class | Register |
| Market value | $731,000 |
| Assessed value | $731 |
Here's the assessment & property tax history for 65 20th Avenue, Sea Cliff, including the evolution of the total tax rate and corresponding property tax.
| Year | Market value | Assessment value | Total tax rate | Property tax | Year over year change |
|---|---|---|---|---|---|
| 2026 | $731,000 | $731 | 2128.035 | $15,556 | -2.53% |
| 2025 | $771,000 | $771 | 2069.896 | $15,959 | -6.79% |
| 2024 | $771,000 | $771 | 2220.743 | $17,122 | -4.35% |
| 2023 | $771,000 | $771 | 2321.685 | $17,900 | -5.76% |
| 2022 | $771,000 | $771 | 2463.641 | $18,995 | -15.06% |
The complete history of permits filed for 65 20th Avenue, Sea Cliff, including new construction or demolition permits, plus any work pertaining to plumbing, heating and sprinkler systems is available with a free account. Available data goes back to 1990.
Create a free account to unlock extended information for 65 20th Avenue, Sea Cliff, including whether it's located in FEMA flood zones, floodways or special flood hazard areas, as well as the Coastal barriers resources system area (COBRA).
| FEMA flood zone(s) | X (See more on map) |
Access the detailed traffic volume map for 65 20th Avenue, Sea Cliff to see estimated average daily traffic on streets surrounding the property as well as the types of properties in its vicinity.
| View daily traffic map |
| Name | Rating | Type | Grade range | No of students | Distance (miles) |
|---|---|---|---|---|---|
| Sea Cliff Elementary School | 8 | Public | K-5 | 343 | 0.58 |
| North Shore Middle School | 9 | Public | K-8 | 646 | 1.16 |
| North Shore Senior High School | 9 | Public | K-5, 9-12 | 764 | 1.19 |
| Tiegerman Elementary School | NR | Private | 1-5 | 136 | 1.20 |
| Landing School | 4 | Public | PK, 3-5 | 349 | 1.28 |
| Name | Rating | Type | Grade range | No of students | Distance (miles) |
|---|---|---|---|---|---|
| North Shore Middle School | 9 | Public | K-8 | 646 | 1.16 |
| St. Peter of Alcantara School | NR | Private | PK-8 | 162 | 1.84 |
| All Saints Regional Catholic School | NR | Private | PK-8 | 166 | 1.92 |
| Robert M Finley Middle School | 5 | Public | 6-8 | 710 | 2.15 |
| Carrie Palmer Weber Middle School | 7 | Public | 6-8 | 1,216 | 2.23 |
| Name | Rating | Type | Grade range | No of students | Distance (miles) |
|---|---|---|---|---|---|
| North Shore Senior High School | 9 | Public | K-5, 9-12 | 764 | 1.19 |
| Paul D Schreiber Senior High School | 9 | Public | 9-12 | 1,613 | 1.79 |
| North Shore Day School | NR | Private | 0 | 2.28 | |
| Vincent Smith School | NR | Private | 2-12 | 46 | 2.62 |
| Glen Cove High School | 5 | Public | 9-12 | 1,050 | 2.71 |
Data provided by GreatSchools.org © 2025. All rights reserved.
Here are the neighbors for 65 20th Avenue, Sea Cliff.
| Address | Square feet | Purchase date | Purchase price |
|---|---|---|---|
| 212 Maple Ave, Sea Cliff | 1,452 | 04/17/2007 | $520,000 |
| 30 Prospect Ave, Sea Cliff | 2,328 | ||
| 56 The Boulevard, Sea Cliff | 03/21/1997 | $245,750 | |
| 120 Prospect Ave, Sea Cliff | 3,384 | 10/31/2003 | $726,000 |
| 32 The Boulevard, Sea Cliff | 612 | 12/10/2004 | $355,000 |
| 200 Tilley Pl, Sea Cliff | 3,555 | 12/31/2009 | |
| 154 15th Ave, Sea Cliff | 3,066 | 10/22/2022 | |
| 4 Sheridan Ln, Sea Cliff | 2,559 | 02/28/2023 | $1,990,000 |
| 18 Shore Rd, Sea Cliff | 1,000 | 10/12/2005 | |
| 245 Tilley Pl, Sea Cliff | 1,296 | 11/16/2021 | |
| 14 Bay Ave, Sea Cliff | 11/21/2018 | $600,000 | |
| 24 Prospect Ave, Sea Cliff | 1,989 | 02/10/2026 | $600,000 |
| 201 Maple Ave, Sea Cliff | 1,154 | 03/04/2020 | $645,000 |
| 255 12th Ave, Sea Cliff | 1,578 | ||
| 6 Bay Ave, Sea Cliff | 2,701 | 02/15/2013 | $845,000 |
| 2 Sheridan Ln, Sea Cliff | 1,656 | 10/22/2007 | $817,000 |
| 10 Cliff Way, Sea Cliff | 1,200 | 06/12/2025 | |
| 110 Prospect Ave, Sea Cliff | 2,993 | 09/15/2010 | $1,750,000 |
| 98 Prospect Ave, Sea Cliff | 2,210 | ||
| 26 The Boulevard, Sea Cliff | 2,712 | 06/16/2011 |