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904 Union Street

904 Union Street, Brooklyn, NY 11215
Co-op in North Slope
14 Units
904 Union Street is a Co-op located in North Slope, Brooklyn. The building was first built in 1910 and is 116 years old. It was first renovated and altered in 1985. The lot that the building was built on is 25 feet wide and 90 feet long. The official lot area is listed as 2,250 square feet. The building itself is 25 feet wide and 73 feet long. In total, 904 Union Street has a total floor area of 7,252 square feet. Of that, 6,702 square feet are used for residential purposes. About 550 square feet of the building are used for commercial purposes. There are a total of 14 units. Of those, 13 are residential units. There is one commercial unit. 904 Union Street has a total of 4 floors.

Interested in learning more about the building? There are many great amenities and features for residents in the building. Both dogs and cats are allowed in the building! There are 15 closings on record, of which we have matching data for 3 listings. In the past 3 years, a listing in this building will typically remain on the market for about 119 days The transaction that took the longest to complete was unit 2A, listed on Sep 28, 2014 for $299,000. This particular unit ultimately sold 172 days later for $290,000. The most recent transaction was for unit 13, sold for $749,000 on Jul 27, 2017. Fun fact, the oldest transaction we have on record took place on Aug 04, 1975. See the full transaction history for 904 Union Street below.

North Slope, where 904 Union Street is located, has a median asking price of $899,000 for co-op buildings. Meanwhile, the building itself has a median asking price of $649,450. For interested buyers, that means the building's median asking price is around 0.28% below the neighborhood's median asking price for co-ops. Which is great news as a buyer may end up finding some relatively affordable units in this building compared to other co-op buildings in the neighborhood.

Unfortunately, there are currently no active listings within the building but our inventory of available units for sale is constantly updating in real time. Check back frequently for updates.

Building Features

Building Style

Prewar

Pet Policy

Dogs Allowed / Cats Allowed
Cats Allowed
Dogs Allowed

Facilities

Bike Room
Storage Available
Laundry Room

Laundry

Washer / Dryer Allowed

6 Past Sales

Date Unit Beds Baths Sqft Price Closed Listed By
20250428 Unit 3A
04/28/2025
3A
Studio
1 Bath
-
$399,000
bedrooms
Studio
bathrooms
1 Bath
$415,000 +4.01%
10/09/2025
Nathalie Roy
Corcoran Group
20250206 Unit 1C
02/06/2025
1C
2 Bed
2 Bath
-
$1,575,000
bedrooms
2 Bed
bathrooms
2 Bath
$1,550,000 -1.59%
06/25/2025
Carol Wang
Compass
20170308 Unit 4A
03/08/2017
4A
2 Bed
1 Bath
-
$749,000
bedrooms
2 Bed
bathrooms
1 Bath
$749,000
02/05/2021
Maria Ryan
Compass
20140928 Unit 2A
09/28/2014
2A
Studio
1 Bath
-
$299,000
bedrooms
Studio
bathrooms
1 Bath
$290,000 -3.01%
03/19/2015
Evan Duby
Compass
20140422 Unit 1C
04/22/2014
1C
2 Bed
3 Bath
-
$999,900
bedrooms
2 Bed
bathrooms
3 Bath
$999,900
06/26/2014
Debra Bondy
The Corcoran Group
20090603 Unit 4A
06/03/2009
4A
2 Bed
1 Bath
-
$456,000
bedrooms
2 Bed
bathrooms
1 Bath
$456,000
11/23/2009
Elizabeth Sheehan
Brown Harris Stevens Residential Sales LLC


Building Info

Overview

    General

  • Year Built: 1910
  • First Altered Year: 1985
  • Building Count: 1
  • Floor Count: 4
  • Total Unit Count: 14
  • Residential Unit Count: 13
  • Basement Type: 2

    Dimensions

  • Lot Area Sqft: 2,250
  • Lot Size Depth Feet: 90
  • Lot Size Frontage Feet: 25
  • Building Depth: 73
  • Building Frontage: 25
  • Gross Building Area: 7,252

    Building Floor Area

  • Residential Building Floor Area: 6,702
  • Commercial Building Floor Area: 550
  • Office Building Floor Area: 550

    Floor Area Ratio

  • Built Floor Area Ratio: 3
  • Residential Floor Area Ratio: 3
  • Facilities Floor Area Ratio: 3

Building

  • Building Type: C6
  • Lot Type: 5
  • Land Use: 02
  • Irregular Lot Code: N
  • Extension Code: N

Neighborhood

  • Community District: 306
  • City Council District: 39
  • Police Precinct: 78
  • Fire Company: Q001
  • Health Area: 4500
  • Sanitation District Borough: 3
  • Sanitation Subsection: 3E
  • School District: 15

Zoning

  • Split Boundary Zone Indicator: N
  • Zoning: R7B

Geography

  • Borough Name: BK
  • Borough Code: 3
  • Block: 1066
  • Lot: 23
  • Borough Block Lot: 3010660023

    Address

  • Full Address: 904 Union Street
  • Zip Code: 11215

Valuation

    Assessments Valuation

  • Assessed Total Value: $438,750
  • Assessed Land Value: $31,050

    Exemptions

  • Exempt Total Value: $21,274
Data used for valuation calculations is provided by RealtyHop, and other third party sources

About South Brooklyn



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Frequently Asked Questions

What neighborhood is 904 Union Street located in?
The 904 Union Street is a Co-op located in the neighborhood of North Slope in South Brooklyn, Brooklyn.
What is the average sales price for listings in 904 Union Street?
The average sales price for units in 904 Union Street is $649,450 currently.