| Primary address | 309 Union Avenue |
| Neighborhood | Mariner's Harbor |
| Zip code | 10303 |
| Borough | Staten island |
| Block & lot | 01221-0001 |
View detailed information on past sales, title documents and property taxes, including the assessed market value, in their dedicated tabs.
| Tax class | Register |
| Estimated property tax | $1,359 |
| Lot sqft | 2,675 |
| Lot dimensions | |
| Building class | One Family Attached or Semi-Detached (A5) |
| Building sqft | 1,760 |
| Building dimensions | |
| Buildings on lot | 1 |
| Stories | 3 |
| Structure type | Old style |
| Building material | Frame |
| Exterior wall | Composition |
| Year built | 1899 |
| Frontage(s) | Union Avenue (narrow) Netherland Avenue (narrow) Confederation Place (narrow) |
| Nearest wide street | Maple Parkway |
| Distance to wide street | Register |
| School district | 31 |
| Community district | 1 |
| Closest police station | 0.54 Miles |
| Closest fire station | 0.44 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:
309 Union Avenue, Staten Island, NY 10303 was built in 1899 and has a total of 1,760 square feet.
What is the assessed value of 309 Union Avenue, Staten Island, NY 10303 and the property tax paid?Assessed at $31,440, the tax amount paid for 309 Union Avenue, Staten Island, NY 10303 is $1,342. For the next year, the tax amount for 309 Union Avenue, Staten Island, NY 10303 is estimated at $1,359.
How many residential units does this building have?This building has 1 residential unit(s).
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Create a free account to view the complete sales history for 309 Union Avenue, Staten Island, including title documents, transfer conditions, mortgages, liens, and pre-foreclosures.
Access detailed property tax data for 309 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: | $1,343 |
| Estimated property tax: | $1,359 |
| Tax assessor's market value: | $524,000 |
| Assessed value: | $31,440 |
| Exemptions granted by city: | Register |
Here's the assessment & property tax history for 309 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 | $524,000 | $31,440 | $6,767 | 19.843% | $4,305 | $1,343 | -60.03% |
| 2024/25 | $501,000 | $30,060 | $16,726 | 20.085% | $4,111 | $3,359 | +7.85% |
| 2023/24 | $471,000 | $28,260 | $15,508 | 20.085% | $3,878 | $3,115 | +181.00% |
| 2022/23 | $426,000 | $25,560 | $5,458 | 20.309% | $3,699 | $1,108 | -3.02% |
| 2021/22 | $449,000 | $26,940 | $5,728 | 19.963% | $3,636 | $1,143 | -5.69% |
The complete history of permits filed for 309 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) |
| Hurricane evacuation zone: | 5 (See more on map) |
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Distance to Subway
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| Closest station | Jefferson Av & N Railroad Av at SW Corner | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Station lines | SIR | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Distance (miles) | 4.232 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Bus Routes
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| Name | Brabant St/Union Av | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Line | S46 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Distance (miles) | 0.17 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| 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 | 0.16 |
| P.S. 44 Thomas C Brown | 4 | Yes | Public | PK, K-5 | 547 | 0.16 |
| P.S. 22 Graniteville | 5 | No | Public | PK, K-5 | 786 | 0.46 |
| P.S. 22 Graniteville | 5 | No | Public | PK, K-5 | 786 | 0.46 |
| New World Preparatory Charter School | 6 | No | Charter | K-8 | 740 | 0.58 |
| 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 | 0.80 |
| New World Preparatory Charter School | 6 | No | Charter | K-8 | 740 | 0.58 |
| St Adalbert School | NR | No | Private | PK-8 | 170 | 0.58 |
| Staten Island School Of Civic Leadership | 7 | No | Public | PK, K-8 | 838 | 0.68 |
| Jewish Foundation School | NR | No | Private | 1-8 | 139 | 1.07 |
| 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 | 0.89 |
| Bishop Patrick V Ahern High School | NR | No | Private | 0 | 1.34 | |
| Bishop Patrick V Ahern High School | NR | No | Private | 23 | 1.35 | |
| Moore Catholic High School | NR | No | Private | 9-12 | 394 | 1.41 |
| Mesivta Kesser Yisroel Of Willowbrook | NR | No | Private | 9-12 | 60 | 1.82 |
Data provided by GreatSchools.org © 2025. All rights reserved.
Here are the neighbors for 309 Union Avenue, Staten Island, NY 10303.