SOLD FOR $3,600,000
· Closed December 20, 2018
834 Union Street
MLS® #RLS10498982
Listing by Compass
6
Bedrooms
3
Baths
4,000
Sq. Ft.
1920
Year Built
Quick Summary
Property Highlights
- Style: Prewar architecture
- Character: Pre-war building (1920)
Property Details
Listing History
| Event | Date | Price | Change |
|---|---|---|---|
| Listed | Oct 1, 2018 | $3,600,000 | - |
| Currently | Apr 28, 2026 | $3,600,000 | - |
Description
This Stunning 4000+ square foot, Classic, 4 story brownstone is ready to move into and start generating income! Just strides from historic Grand Army Plaza and bucolic Prospect Park this home embodies the coveted combination of enchanting original detail with tasteful updates. Sitting on a sizable 20 x 90 foot lot and built 48 feet deep this three-unit home's unique layout offers a large family-sized duplex with two income producing units on the 3rd and 4th stories. On the Garden and Parlor level is the owners' duplex with soaring 11 foot ceilings, over-sized Mahogany doors, pier mirror, the breathtaking original moldings and stair, colorful original tile in the vestibule and foyer and the most delicate and whimsical plasterwork. The open plan of the Garden level combines a spacious living and dining room that flows into a huge eat-in-kitchen with a center island custom maple cabinetry, granite countertops and stainless steel appliances. Off of the kitchen is your full sized washer and dryer, a convenient half bath and a door to the lovely garden. The Parlor level has three light-filled bedrooms with oversized floor to ceiling windows and a full bath with a tub and glass enclosed shower. On the 3rd and 4th floors are two beautiful, bright, floor through 1+ bedroom, 1 bath apartments with renovated, eat-in-kitchens and baths that command excellent rents. Zoned for PS321 and in close proximity to the vibrant shopping and restaurants of 7th Avenue, 2,3,B,Q & R Trains to Manhattan, The Park Slope Food Coop, Saturday Farmers Market and Public Library, this property makes for a wonderful home and exceptional investment.
Building Information
About Park Slope
View All Park Slope ListingsPark Slope is a well-known Brooklyn neighborhood, recognized for its tree-lined streets and preserved brownstones. Bordering the western edge of Prospect Park, the neighborhood offers convenient access to green space. The real estate market features a mix of historic townhouses, cooperatives, and modern condominiums, within walking distance of the park.
Park Slope Live Market Data
View NeighborhoodActive Listings
111
Median Asking Price
$1.72M
Median $/Sqft
$1,376
Avg Days on Market
N/A
New This Week
12
Price Reduced
17%
Sold (30 Days)
21
Median Sale Price
$1.66M
Live data from RLS at REBNY • Updated 4/28/26, 1:20 AM EST
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Location
834 Union Street, Park Slope, Kings County • Near 7th Avenue/8th Avenue
Building Information
Official NYC property records for this building
Tax & Assessment
Note: Individual unit taxes may differ. Verify current tax bills with NYC DOF.
Source: NYC PLUTO (Primary Land Use Tax Lot Output), NYC Department of City Planning (data.cityofnewyork.us)
Want help estimating ownership costs or understanding building compliance? Let's discuss
Listing Data
RLS® at REBNY (Real Estate Board of New York) via Trestle API. Updated in real-time.
Building Data
NYC PLUTO (Primary Land Use Tax Lot Output), NYC Department of City Planning. Updated quarterly.
Market Data
RLS® at REBNY (Real Estate Board of New York). Live data updated in real-time.
Map & Location
OpenStreetMap contributors via Leaflet. Geocoding via Nominatim.
All data is provided for informational purposes only and should be independently verified. See our Data Sources Policy for more information.
Frequently Asked Questions
Common questions about this property
This property has 6 bedrooms and 3 full bathrooms.
The listed interior living area is 4,000 square feet. Verify dimensions independently during due diligence.
According to MLS records, the building was constructed in 1920, making it approximately 106 years old.
Pet policy requires confirmation with the listing broker.
At the current list price of $3,600,000 for 4,000 sq ft, the asking price per square foot is approximately $900. This figure is for reference only and may differ from appraised or assessed values.
To schedule a private showing, contact Milton Coste at (917) 416-7433 or mcoste@kwnyc.com. Per REBNY guidelines effective 2025, a Buyer Representation Agreement is required before a buyer's broker can show you properties. You may attend open houses independently without one.
Have a question not answered here?
(917) 416-7433Listing Courtesy of Compass - Laura Rozos
Listing Contact: (917) 701-7340
Listing information for certain New York City properties provided courtesy of the Real Estate Board of New York's Residential Listing Service (the "RLS"). The information contained in this listing has not been verified by the RLS and should be verified by the consumer. The listing information provided here is for the consumer's personal, non-commercial use. Retransmission, redistribution or copying of this listing information is strictly prohibited except in connection with a consumer's consideration of the purchase and/or sale of an individual property. This listing information is not verified for authenticity or accuracy and is not guaranteed and may not reflect all real estate activity in the market. ©2026 The Real Estate Board of New York, Inc., all rights reserved. This advertisement does not suggest that the broker has a listing in this property or properties or that any property is currently available.
Broker Commission Disclosure: Broker commissions are not set by law and are fully negotiable.
Buyer Notice: Planning to work with a buyer's broker? A Buyer Representation Agreement is required before your broker can show you properties, per REBNY/UCBA guidelines (effective 2025). You may attend open houses independently without one.
RLS Data display by Keller Williams NYC. Data last updated on 4/28/2026 at 5:20 AM UTC