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321 Union Avenue, Staten Island, NY 10303 Property Information

321 Union Avenue, Staten Island, NY 10303 Property Information

  • General
  • Owner
  • Documents
  • Tax
  • Permits
  • Neighborhood
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321 Union Avenue, Staten Island, NY 10303
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Address

Primary address 321 Union Avenue
Neighborhood Mariner's Harbor
Zip code 10303
Borough Staten island
Block & lot 01223-0044

Sales & Tax Overview for 321 Union Avenue, Staten Island

View detailed information on past sales, title documents and property taxes, including the assessed market value, in their dedicated tabs.

Purchase date 08/25/2016
Purchase price $280,000
Tax class
Estimated property tax $4,333

Lot & Building Information for 321 Union Avenue, Staten Island

Lot sqft 7,272
Lot dimensions 56 ft x 203 ft
Building class Two Stories Detached (Small or Moderate Size, with or without Attic) (A1)
Building sqft 1,340
Building dimensions 19 ft x 48 ft
Buildings on lot 1
Stories 2
Structure type Old style
Building material Frame
Exterior wall Aluminum/vinyl
Basement type Full
Year built 1899
Frontage(s) Union Avenue (narrow)
Netherland Avenue (narrow)
Spirit Lane (narrow)
Nearest wide street Maple Parkway
Distance to wide street
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Zoning & Use for 321 Union Avenue, Staten Island

Zoning
Residential units (DOF) 1
Residential sqft

Area Overview

Walk Score
80 /100. Very Walkable
Transit Score
61 /100. Good Transit
Bike Score
50 /100. Bikeable

School district 31
Community district 1
Closest police station 0.52 Miles
Closest fire station 0.46 Miles

View more neighborhood information such as transportation, nearby schools and risk designations in the dedicated tab.

Other Property Data for 321 Union Avenue, Staten Island

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Floor area ratio (FAR) for 321 Union Avenue, Staten Island, NY 10303, including commercial and residential FAR, FAR as built and usable floor area.
Development maps such as planimetric, zoning, urban landscape, and HPD alternative enforcement program maps.
Violations for 321 Union Avenue, Staten Island, NY 10303, including DOB violations, ECB violations, HPD violations and 311 complaints.

About 321 Union Avenue, Staten Island

What is the year built & the total sq. ft. for 321 Union Avenue, Staten Island, NY 10303?

321 Union Avenue, Staten Island, NY 10303 was built in 1899 and has a total of 1,340 square feet.

What is the assessed value of 321 Union Avenue, Staten Island, NY 10303 and the property tax paid?

Assessed at $33,000, the tax amount paid for 321 Union Avenue, Staten Island, NY 10303 is $4,329. For the next year, the tax amount for 321 Union Avenue, Staten Island, NY 10303 is estimated at $4,333.

When was 321 Union Avenue, Staten Island, NY 10303 last sold and what was the last sale price?

321 Union Avenue, Staten Island, NY 10303 was last sold in 08/25/2016 for $280,000.

How many residential units does this building have?

This building has 1 residential unit(s).

Ownership Information for 321 Union Avenue, Staten Island

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Property owner name for 321 Union Avenue, Staten Island, NY 10303
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Building contacts for 321 Union Avenue, Staten Island, NY 10303
Building management:
Representatives (from permits):
Tenants:
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Past Sales & Property History for 321 Union Avenue, Staten Island

Create a free account to view the complete sales history for 321 Union Avenue, Staten Island, including title documents, transfer conditions, mortgages, liens, and pre-foreclosures.

Purchase date Purchase price Buyer name Seller name
08/25/2016 $280,000

Title Documents for 321 Union Avenue, Staten Island

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Date Type Amount Party 1 Party 2 Doc image
08/25/2016 - D
09/07/2016 - R		 Deed
(Bargain and sale deed)
           
           
           
           
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R: Recorded date
D: Document date

Property Taxes for 321 Union Avenue, Staten Island

Access detailed property tax data for 321 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: $4,329
Estimated property tax: $4,333
Tax assessor's market value: $550,000
Assessed value: $33,000

More about New York City Property Taxes

Assessment History for 321 Union Avenue, Staten Island

Here's the assessment & property tax history for 321 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 $550,000 $33,000 $21,817 19.843% $4,329 $4,329 +4.45%
2024/25 $492,000 $29,520 $20,635 20.085% $4,145 $4,145 +4.35%
2023/24 $497,000 $29,820 $19,774 20.085% $3,972 $3,972 +3.38%
2022/23 $404,000 $24,240 $18,916 20.309% $3,842 $3,842 +5.74%
2021/22 $426,000 $25,560 $18,199 19.963% $3,633 $3,633 -5.05%
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Permits for 321 Union Avenue, Staten Island

The complete history of permits filed for 321 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.

No recorded permits for this property.

Mariner's Harbor Residential Market Stats

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.

Median Sale Price
$555,000
5.8% YoY
Median Price/Sqft
$412
8.8% YoY
Staten Island Median Sale Price
$725,000
3.6% YoY

Check out recently sold homes in Staten Island and see how their prices compare.

Risk

FEMA flood zone(s): X (See more on map)
Hurricane evacuation zone: 4 (See more on map)

Transportation

Distance to Subway
Closest station Jefferson Av & N Railroad Av at SW Corner
Station lines SIR
Distance (miles) 4.214
View subway map
Bus Routes
Name Forest Av/Union Av
Line S98
Distance (miles) 0.163

Schools

Nearest elementary schools

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 0.18
P.S. 44 Thomas C Brown 4 Yes Public PK, K-5 547 0.18
P.S. 22 Graniteville 5 No Public PK, K-5 786 0.44
P.S. 22 Graniteville 5 No Public PK, K-5 786 0.44
St Adalbert School NR No Private PK-8 170 0.58
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Nearest middle schools

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 0.79
St Adalbert School NR No Private PK-8 170 0.58
New World Preparatory Charter School 6 No Charter K-8 740 0.58
Staten Island School Of Civic Leadership 7 No Public PK, K-8 838 0.67
Jewish Foundation School NR No Private 1-8 139 1.05
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Nearest high schools

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 1.33
Bishop Patrick V Ahern High School NR No Private 23 1.34
Moore Catholic High School NR No Private 9-12 394 1.40
Mesivta Kesser Yisroel Of Willowbrook NR No Private 9-12 60 1.80
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Data provided by GreatSchools.org © 2025. All rights reserved.

Neighbors for 321 Union Avenue, Staten Island

Here are the neighbors for 321 Union Avenue, Staten Island, NY 10303.

Address Square feet Purchase date Purchase price
19 Spirit Ln, Staten Island 1,200 09/29/2025
373-375 Union Ave, Staten Island 2,028
25 Spirit Ln, Staten Island 1,200
327 Union Ave, Staten Island 1,200 04/30/2013 $270,000
333 Union Ave, Staten Island 1,200 11/23/2016 $292,693
335 Union Ave, Staten Island 1,200 01/06/2023 $526,000
331 Union Ave, Staten Island 1,200 12/19/2025 $610,000
31 Spirit Ln, Staten Island 1,260 10/13/2022 $500,000
27 Spirit Ln, Staten Island 1,200
17 Spirit Ln, Staten Island 1,200
252 Netherland Ave, Staten Island 1,210
323 Union Ave, Staten Island 1,200
325 Union Ave, Staten Island 1,200 09/10/2014
329 Union Ave, Staten Island 1,200 12/20/2023 $50,000
188 Maple Pkwy, Staten Island 1,210 03/04/2021 $480,000
29 Spirit Ln, Staten Island 1,200 03/28/2019 $383,000
23 Spirit Ln, Staten Island 1,200 02/01/2018 $325,000
21 Spirit Ln, Staten Island 1,200 12/22/2023 $1,000
190 Maple Pkwy, Staten Island 1,210 05/24/2017 $1
369 Union Ave, Staten Island 918
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