| Primary address | 21 Maple Avenue, Sea Cliff |
| Zip code | 11579 |
| County | Nassau |
| Town/City | Oyster Bay |
| Village (swiss code) | Sea Cliff |
| Parcel ID | 21-143-1798 |
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 | $14,577 |
| Building sqft | 2,246 |
| Building class | Three Family Year - Round Residence (230.01) |
| Land | Primary site |
| Topography | Level |
| Acreage | 0.185 |
| Buildings on lot | 1 |
| Year built | 1888 |
| Stories | 2 |
| Style | Old Style |
| Rooms | 15 |
| Bathrooms | 4 |
| Attic | Full |
| Basement | Full |
| Exterior wall | Alum/Vinyl |
| 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 Maple Avenue, Sea Cliff, NY 11579 was built in 1888 and has a total of 2,246 square feet.
What is the assessed value of 21 Maple Avenue, Sea Cliff, NY 11579 and the property tax paid?Assessed at $685, the tax amount paid for 21 Maple Avenue, Sea Cliff, NY 11579 is $14,577.
When was 21 Maple Avenue, Sea Cliff, NY 11579 last sold?21 Maple Avenue, Sea Cliff, NY 11579 was last sold in 03/26/2016.
How many residential units does this building have?This building has 3 residential unit(s).
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 21 Maple 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 Maple 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 | $14,577 |
| Tax class | Register |
| Market value | $685,000 |
| Assessed value | $685 |
Here's the assessment & property tax history for 21 Maple 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 | $685,000 | $685 | 2128.035 | $14,577 | +0.61% |
| 2025 | $700,000 | $700 | 2069.896 | $14,489 | -10.01% |
| 2024 | $724,787 | $725 | 2220.743 | $16,100 | -4.35% |
| 2023 | $725,000 | $725 | 2321.685 | $16,832 | -5.76% |
| 2022 | $725,000 | $725 | 2463.641 | $17,861 | -8.11% |
The complete history of permits filed for 21 Maple 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 Maple 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 Maple 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 | 0.17 |
| Tiegerman Elementary School | NR | Private | 1-5 | 136 | 0.81 |
| North Shore Senior High School | 9 | Public | K-5, 9-12 | 764 | 0.90 |
| North Shore Middle School | 9 | Public | K-8 | 646 | 0.97 |
| Landing School | 4 | Public | PK, 3-5 | 349 | 1.08 |
| Name | Rating | Type | Grade range | No of students | Distance to school (mi) |
|---|---|---|---|---|---|
| North Shore Middle School | 9 | Public | K-8 | 646 | 0.97 |
| All Saints Regional Catholic School | NR | Private | PK-8 | 166 | 1.47 |
| Robert M Finley Middle School | 5 | Public | 6-8 | 710 | 1.79 |
| North Shore Day School | NR | Private | 0 | 2.06 | |
| St. Peter of Alcantara School | NR | Private | PK-8 | 162 | 2.31 |
| Name | Rating | Type | Grade range | No of students | Distance to school (mi) |
|---|---|---|---|---|---|
| North Shore Senior High School | 9 | Public | K-5, 9-12 | 764 | 0.90 |
| North Shore Day School | NR | Private | 0 | 2.06 | |
| Paul D Schreiber Senior High School | 9 | Public | 9-12 | 1,613 | 2.24 |
| Glen Cove High School | 5 | Public | 9-12 | 1,050 | 2.39 |
| Friends Academy | NR | Private | PK-12 | 765 | 2.75 |
Data provided by GreatSchools.org © 2025. All rights reserved.
Here are the neighbors for 21 Maple Avenue, Sea Cliff.
| Address | Square feet | Purchase date | Purchase price |
|---|---|---|---|
| 117 15th Ave, Sea Cliff | 895 | ||
| 71 Maple Ave, Sea Cliff | 1,752 | 05/10/2021 | $660,000 |
| 101 15th Ave, Sea Cliff | 704 | 11/06/2023 | |
| 55 Maple Ave, Sea Cliff | 2,186 | ||
| 105 15th Ave, Sea Cliff | 1,144 | 08/14/2008 | $517,500 |
| 125 15th Ave, Sea Cliff | 901 | 12/15/2025 | |
| 129 15th Ave, Sea Cliff | 611 | 08/14/2024 | $660,000 |
| 118 Main Ave, Sea Cliff | 2,072 | 08/12/2005 | $675,000 |
| 28 14th Ave, Sea Cliff | 1,056 | 05/24/2000 | |
| 9 Maple Ave, Sea Cliff | 1,500 | 01/09/2026 | $1,299,000 |
| 109 15th Ave, Sea Cliff | 919 | 01/12/2022 | |
| 113 15th Ave, Sea Cliff | 773 | 10/14/2011 | $289,000 |
| 121 15th Ave, Sea Cliff | 632 | 08/01/2025 | $575,000 |
| 136 16th Ave, Sea Cliff | 10/18/2012 | ||
| 25 Maple Ave, Sea Cliff | 2,229 | 04/16/2015 | $569,000 |
| 77 Roslyn Ave, Sea Cliff | 14,367 | 12/23/2016 | |
| 133 15th Ave, Sea Cliff | 1,048 | 01/16/2026 | $899,000 |
| 24 14th Ave, Sea Cliff | 2,310 | 05/17/2019 | |
| 36 14th Ave, Sea Cliff | 1,684 | 08/14/2017 | $610,000 |
| 7 Maple Ave, Sea Cliff | 05/10/2021 | $660,000 |