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Map
904 UNION Street #3A
About This Property
Experience all Grand Army Plaza has to offer with this charming prewar studio in the heart of Park Slope.
Steps from the entrance to Prospect Park and only two flights up, this lovely home offers open living space with extra-high 9.3 ft ceilings, a charming decorative mantle, original hardwood floors in pristine condition, and a full-sized eat-in kitchen with a dishwasher and ample cabinets. The bathroom has a window and a soaking tub.
Also featured are a comfortable and convenient built-in murphy bed, a giant walk-in closet and updated double-glazed windows.
This boutique pre-war co-op building is self-managed and beautifully maintained; it has strong financials and very low common charges. Included are free laundry (easily accessed from the unit's basement level), dedicated open storage for the unit and bicycle storage in the basement, as well as stroller parking in the lobby.
The prime Park Slope location is steps from Prospect Park and Grand Army Plaza, very near the 2/3 and B/Q trains, Brooklyn Public Library and Botanical Gardens, as well as the Park Slope Food Coop and all the conveniences of 7th Avenue.
Pets are considered on a case-by-case basis. Zoned for PS 321
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Cap Rate Calculator
What does this mean?
Based on our analysis, the cap rate of this property is 1.25%. A negative cap rate indicates that the property might not be feasible as an income-producing asset. The median cap rate for a near zip code 11238 is 4.23%.
How much can I actually make?
Actual monthly rental income may vary between $4,760 and $7,140 depending on unit-specific characteristics. You can change the amount using the slider to further explore.
How is cap rate calculated?
Cap Rate = Net Operating Income (NOI) / Property Asset Value.
When calculating the cap rate, we assume 100% occupancy. Leverage (mortgage) is not considered.
Cap Rate provided by RealtyHop and RentHop, learn more about cap rate here.
Price History
| Date / Event | Date | Event | Price |
|---|---|---|---|
| Oct 9, 2025 | Sold | ||
| Sold | |||
| Jun 13, 2025 | In contract | - | |
| In contract | |||
| Apr 28, 2025 | Listed by Corcoran Group | $399,000 | |
| Listed by Corcoran Group | |||
Property Highlights
Comparables
Status
Price/ft²
Listed On
Sold On
Past Sales
| Date | Unit | Beds | Baths | Sqft | Price | Closed | Listed By |
|---|---|---|---|---|---|---|---|
|
04/28/2025
|
Studio
|
1 Bath
|
-
|
$399,000
Studio
1 Bath
|
$415,000
+4.01%
10/09/2025
|
Charles Pigott
Corcoran Group
| |
|
02/06/2025
|
2 Bed
|
2 Bath
|
-
|
$1,575,000
2 Bed
2 Bath
|
$1,550,000
-1.59%
06/25/2025
|
Paul Pinizzotto
Compass
| |
|
03/08/2017
|
2 Bed
|
1 Bath
|
-
|
$749,000
2 Bed
1 Bath
|
$749,000
02/05/2021
|
Maria Ryan
Compass
| |
|
09/28/2014
|
Studio
|
1 Bath
|
-
|
$299,000
Studio
1 Bath
|
$290,000
-3.01%
03/19/2015
|
Evan Duby
Compass
| |
|
04/22/2014
|
2 Bed
|
3 Bath
|
-
|
$999,900
2 Bed
3 Bath
|
$999,900
06/26/2014
|
Debra Bondy
The Corcoran Group
| |
|
06/03/2009
|
2 Bed
|
1 Bath
|
-
|
$456,000
2 Bed
1 Bath
|
$456,000
11/23/2009
|
Elizabeth Sheehan
Brown Harris Stevens Residential Sales LLC
|
Building Info
Phone: 425-283-2930
Address: 335 Madison Avenue, New York, NY 10017