| Primary address | 121 Union Avenue |
| Neighborhood | Mariner's Harbor |
| Zip code | 10303 |
| Borough | Staten island |
| Block & lot | 01213-0017 |
View detailed information on past sales, title documents and property taxes, including the assessed market value, in their dedicated tabs.
| Purchase date | 11/12/2025 |
| Purchase price | $740,000 |
| Tax class | Register |
| Estimated property tax | $5,962 |
| Lot sqft | 3,238 |
| Lot dimensions | |
| Building class | Two Family Frame (B2)
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| Building sqft | 1,600 |
| Building dimensions | |
| Buildings on lot | 1 |
| Stories | 2 |
| Structure type | Conventional |
| Building material | Frame |
| Exterior wall | Combination |
| Basement type | Full |
| Year built | 2004 |
| Frontage(s) | Union Avenue (narrow) |
| Nearest wide street | Walloon Street |
| Distance to wide street | Register |
| School district | 31 |
| Community district | 1 |
| Closest police station | 0.47 Miles |
| Closest fire station | 0.14 Miles |
View more neighborhood information such as transportation, nearby schools and risk designations in the dedicated tab.
New York property reports include comprehensive occupancy, development and violation information. Create a free account to access valuable data points such as:
121 Union Avenue, Staten Island, NY 10303 was built in 2004 and has a total of 1,600 square feet.
What is the assessed value of 121 Union Avenue, Staten Island, NY 10303 and the property tax paid?Assessed at $40,980, the tax amount paid for 121 Union Avenue, Staten Island, NY 10303 is $5,624. For the next year, the tax amount for 121 Union Avenue, Staten Island, NY 10303 is estimated at $5,962.
When was 121 Union Avenue, Staten Island, NY 10303 last sold and what was the last sale price?121 Union Avenue, Staten Island, NY 10303 was last sold in 11/12/2025 for $740,000.
How many residential units does this building have?This building has 2 residential unit(s).
View property contacts like owners, building management, representatives from permits and tenants with a free account. For LLC-owned properties, access manually researched real owners and phone numbers.
Create a free account to view the complete sales history for 121 Union Avenue, Staten Island, including title documents, transfer conditions, mortgages, liens, and pre-foreclosures.
| Purchase date | Purchase price | Buyer name | Seller name |
|---|---|---|---|
| 11/12/2025 | $740,000 | Register | Register |
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 121 Union Avenue, Staten Island, NY 10303. Tax information included: property tax, market value and assessed value, exemptions, abatements, and assessment history.
| Tax year: | 2025-2026 |
| Property tax: | $5,625 |
| Estimated property tax: | $5,962 |
| Tax assessor's market value: | $683,000 |
| Assessed value: | $40,980 |
Here's the assessment & property tax history for 121 Union Avenue, Staten Island, including the evolution of the total tax rate and corresponding property tax.
| Year | Market value | Assessed value | Taxable | Tax rate % | Base tax | Property tax | Year over year change |
|---|---|---|---|---|---|---|---|
| 2025/26 | $683,000 | $40,980 | $28,346 | 19.843% | $5,625 | $5,625 | +4.72% |
| 2024/25 | $679,000 | $40,740 | $26,742 | 20.085% | $5,371 | $5,371 | +6.00% |
| 2023/24 | $632,000 | $37,920 | $25,229 | 20.085% | $5,067 | $5,067 | -1.10% |
| 2022/23 | $514,000 | $30,840 | $25,229 | 20.309% | $5,124 | $5,124 | +2.50% |
| 2021/22 | $495,000 | $29,700 | $25,039 | 19.963% | $4,999 | $4,999 | +0.56% |
The complete history of permits filed for 121 Union Avenue, Staten Island, 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.
Access a detailed real estate market overview of Mariner's Harbor so you can assess current trends, home values, types of properties sold and transaction volume.
View the median home sale price in Mariner's Harbor and compare it to other neighborhoods in Staten Island.
Check out recently sold homes in Staten Island and see how their prices compare.
| FEMA flood zone(s): | X (See more on map) |
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Distance to Subway
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| Closest station | Minthorne St & Victory Bl at SE Corner | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Station lines | SIR | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Distance (miles) | 4.363 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Bus Routes
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| Name | Maple Py/Walloon St | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Line | S96 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Distance (miles) | 0.085 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Name | Rating | Att. zoned | Type | Grade range | No of students | Distance to school (mi) |
|---|---|---|---|---|---|---|
| P.S. 44 Thomas C Brown | 4 | Yes | Public | PK, K-5 | 547 | 0.17 |
| P.S. 44 Thomas C Brown | 4 | Yes | Public | PK, K-5 | 547 | 0.17 |
| St Adalbert School | NR | No | Private | PK-8 | 170 | 0.65 |
| St Adalbert School | NR | No | Private | PK-8 | 170 | 0.65 |
| New World Preparatory Charter School | 6 | No | Charter | K-8 | 740 | 0.65 |
| Name | Rating | Att. zoned | Type | Grade range | No of students | Distance to school (mi) |
|---|---|---|---|---|---|---|
| Is 51 Edwin Markham | 6 | Yes | Public | 6-8 | 1,205 | 1.01 |
| St Adalbert School | NR | No | Private | PK-8 | 170 | 0.65 |
| New World Preparatory Charter School | 6 | No | Charter | K-8 | 740 | 0.65 |
| Staten Island School Of Civic Leadership | 7 | No | Public | PK, K-8 | 838 | 0.97 |
| Jewish Foundation School | NR | No | Private | 1-8 | 139 | 1.38 |
| Name | Rating | Att. zoned | Type | Grade range | No of students | Distance to school (mi) |
|---|---|---|---|---|---|---|
| Port Richmond High School | 3 | Yes | Public | 9-12 | 1,693 | 0.81 |
| Bishop Patrick V Ahern High School | NR | No | Private | 0 | 1.65 | |
| Bishop Patrick V Ahern High School | NR | No | Private | 23 | 1.66 | |
| Moore Catholic High School | NR | No | Private | 9-12 | 394 | 1.72 |
| Simon Youth Academy | NR | No | Public | 9-12 | 23 | 1.96 |
Data provided by GreatSchools.org © 2025. All rights reserved.
Here are the neighbors for 121 Union Avenue, Staten Island, NY 10303.
| Address | Square feet | Purchase date | Purchase price |
|---|---|---|---|
| 119 Union Ave, Staten Island | 1,600 | 09/09/2015 | |
| 85 Union Ave, Staten Island | |||
| 73 Union Ave, Staten Island | 885 | 09/15/2020 | |
| 133 Union Ave, Staten Island | 960 | ||
| 129 Union Ave, Staten Island | 1,548 | ||
| 155 Union Ave, Staten Island | 1,540 | ||
| 101 Union Ave, Staten Island | 1,089 | 07/14/2011 | |
| 75 Union Ave, Staten Island | 884 | ||
| 127 Union Ave, Staten Island | 1,296 | 03/27/2019 | $260,000 |
| 131 Union Ave, Staten Island | 1,280 | 09/04/2025 | |
| 44 Maple Pkwy, Staten Island | 1,800 | 06/27/2023 | $700,000 |
| 97 Union Ave, Staten Island | 2,212 | 05/18/2017 | $430,000 |
| 83 Union Ave, Staten Island | 1,044 | ||
| 81 Union Ave, Staten Island | 884 | 08/08/2018 | |
| 90 Erastina Pl, Staten Island | 2,450 | 08/24/2012 | $329,900 |
| 141 Union Ave, Staten Island | 1,004 | ||
| 86 Erastina Pl, Staten Island | 2,668 | 12/05/2024 | |
| 77 Union Ave, Staten Island | 885 | ||
| 82 Erastina Pl, Staten Island | 1,700 | 11/01/2019 | $410,000 |
| 99 Union Ave, Staten Island | 1,062 | 02/05/2026 | $515,000 |