| Primary address | 21 7th Avenue, Sea Cliff |
| Zip code | 11579 |
| County | Nassau |
| Town/City | Oyster Bay |
| Village (swiss code) | Sea Cliff |
| Parcel ID | 21-91-307 |
View detailed information on past sales, title documents and property taxes, including the assessed market value, in their dedicated tabs.
| Building sqft | 1,856 |
| Building class | One Family Year - Round Residence (210.01) |
| Land | Primary site |
| Topography | Level |
| Acreage | 0.134 |
| Buildings on lot | 1 |
| Year built | 1924 |
| Stories | 2 |
| Style | Old Style |
| Rooms | 7 |
| Bathrooms | 2 |
| Attic | Partial |
| Basement | Full |
| 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:
21 7th Avenue, Sea Cliff, NY 11579 was built in 1924 and has a total of 1,856 square feet.
What is the assessed value of 21 7th Avenue, Sea Cliff, NY 11579 and the property tax paid?Assessed at $664, the tax amount paid for 21 7th Avenue, Sea Cliff, NY 11579 is $14,130.
When was 21 7th Avenue, Sea Cliff, NY 11579 last sold and what was the last sale price?21 7th Avenue, Sea Cliff, NY 11579 was last sold in 05/21/2014 for $670,000.
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Create a free account to view the complete sales history for 21 7th Avenue, Sea Cliff, including title documents, transfer conditions, mortgages and liens.
To view the complete history of deeds, mortgages, assignments of leases and rents, and more, sign up for free. Available data goes back to 1966.
R: Recorded date
D: Document date
Access detailed property tax data for 21 7th Avenue, Sea Cliff, NY 11579. Tax information included: property tax, market value and assessed value, exemptions, abatements, and assessment history.
| Tax year | 2026 |
| Property tax | $14,130 |
| Tax class | Register |
| Market value | $664,000 |
| Assessed value | $664 |
Here's the assessment & property tax history for 21 7th 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 | $664,000 | $664 | 2128.035 | $14,130 | -10.53% |
| 2025 | $763,000 | $763 | 2069.896 | $15,793 | -6.79% |
| 2024 | $763,146 | $763 | 2220.743 | $16,944 | -4.35% |
| 2023 | $763,000 | $763 | 2321.685 | $17,714 | -5.76% |
| 2022 | $763,000 | $763 | 2463.641 | $18,798 | -8.15% |
The complete history of permits filed for 21 7th 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 21 7th 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 21 7th 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 to school (mi) |
|---|---|---|---|---|---|
| Sea Cliff Elementary School | 8 | Public | K-5 | 343 | 0.31 |
| Tiegerman Elementary School | NR | Private | 1-5 | 136 | 0.64 |
| Landing School | 4 | Public | PK, 3-5 | 349 | 0.89 |
| Landing School | 4 | Public | PK, 3-5 | 349 | 0.89 |
| North Shore Senior High School | 9 | Public | K-5, 9-12 | 764 | 1.02 |
| Name | Rating | Type | Grade range | No of students | Distance to school (mi) |
|---|---|---|---|---|---|
| North Shore Middle School | 9 | Public | K-8 | 646 | 1.12 |
| All Saints Regional Catholic School | NR | Private | PK-8 | 166 | 1.33 |
| Robert M Finley Middle School | 5 | Public | 6-8 | 710 | 1.61 |
| North Shore Day School | NR | Private | 0 | 1.88 | |
| St. Peter of Alcantara School | NR | Private | PK-8 | 162 | 2.41 |
| Name | Rating | Type | Grade range | No of students | Distance to school (mi) |
|---|---|---|---|---|---|
| North Shore Senior High School | 9 | Public | K-5, 9-12 | 764 | 1.02 |
| North Shore Day School | NR | Private | 0 | 1.88 | |
| Glen Cove High School | 5 | Public | 9-12 | 1,050 | 2.20 |
| Paul D Schreiber Senior High School | 9 | Public | 9-12 | 1,613 | 2.38 |
| Friends Academy | NR | Private | PK-12 | 765 | 2.65 |
Data provided by GreatSchools.org © 2025. All rights reserved.
Here are the neighbors for 21 7th Avenue, Sea Cliff.
| Address | Square feet | Purchase date | Purchase price |
|---|---|---|---|
| 163 8th Ave, Sea Cliff | 1,558 | 11/21/2025 | |
| 172 Sea Cliff Ave, Sea Cliff | 2,360 | 07/19/2004 | $730,000 |
| 160 8th Ave, Sea Cliff | 2,600 | 04/22/2021 | $950,000 |
| 178 8th Ave, Sea Cliff | 1,738 | 01/12/2018 | |
| 130 Carpenter Ave, Sea Cliff | 1,977 | ||
| 125 Main St, Sea Cliff | 2,552 | 02/05/2016 | $982,500 |
| 25 7th Ave, Sea Cliff | 912 | ||
| 173 Sea Cliff Ave, Sea Cliff | 6,314 | 07/30/2021 | $1,389,000 |
| 172 8th Ave, Sea Cliff | 1,981 | 05/21/2008 | $799,000 |
| 186 8th Ave, Sea Cliff | 1,382 | 08/31/2007 | $750,000 |
| 168 Carpenter Ave, Sea Cliff | 3,138 | 06/16/2009 | $907,000 |
| 75 Main Ave, Sea Cliff | 1,710 | 12/19/2001 | $530,000 |
| 171 8th Ave, Sea Cliff | 1,325 | 03/06/2026 | $855,000 |
| 140 Carpenter Ave, Sea Cliff | 2,262 | 10/22/2025 | $1,275,000 |
| 65 Main Ave, Sea Cliff | 1,613 | 02/12/2010 | $669,000 |
| 181 8th Ave, Sea Cliff | 3,539 | 10/17/2013 | |
| 184 Carpenter Ave, Sea Cliff | 1,626 | 07/23/2024 | $899,000 |
| 29 Main Ave, Sea Cliff | 2,375 | 10/03/2013 | $685,000 |
| 40 Carpenter Ave, Sea Cliff | 1,911 | ||
| 17 7th Ave, Sea Cliff | 1,273 | 04/28/2003 | $499,000 |