Milton Coste

Licensed Real Estate Associate Broker

(917) 416-7433

SOLD FOR $610,000

Listed at $625,000 · Sold 2.4% below asking · Closed January 6, 2021

678 UNION Street #3B
Closed For Sale Condo

$625,000

$997 per sq ft

678 UNION Street #3B

Park Slope, Brooklyn

PARK SLOPE WEST

MLS® #RLS10649509

RLS at REBNY

Listing by The Corcoran Group

1

Bedroom

1

Bath

627

Sq. Ft.

N/A

Year Built

Quick Summary

Bedrooms 1
Bathrooms 1
Living Area 627 sq ft
Year Built N/A
Ownership Condo
HOA/Common Charges $356/mo
Property Taxes $504/yr
Neighborhood Park Slope
Floor 3 of 1

Property Highlights

  • Style: Prewar architecture

Property Details

Type Condo
Ownership Condominium
Total Rooms 3
Baths 1 Full
Floor 3 of 1
Pets Yes
Cross Street 4 AVENUE and 5 AVENUE
Living Area 627 sq ft
Architectural Style Prewar
Parcel # 00955-1406

Listing History

Event Date Price Change
Listed Jul 7, 2020 $625,000 -
Currently Apr 26, 2026 $625,000 -

Description

The quality of its design and the vibrancy of its location ensure this one-bedroom cozy apartment's lifestyle appeal is absolutely irresistible. Conveniently positioned in the heart of Park Slope with all the attractions along 5th Avenue within a few footsteps, it offers a very private retreat that is supremely easy to maintain and situated in the Brooklyn?s best shopping and dining options. The easycare floor plan will have a big impact on buyers who demand value for money. There is a generous and bright living and dining space with hardwood flooring, tall 9-foot ceilings and double hung windows that capture leafy street outlooks. The modern kitchen is well appointed with stainless steel fittings, and there is a peaceful double bedroom with built-in closet space and large south windows that face away from the street. The apartment comes complete with a well-proportioned bathroom with deep soaking tub plus a separate washer dryer, as well as a large deeded storage unit in the basement. Residents here enjoy close proximity to great coffee at Starbucks, Whole Foods Market, as well as JJ Byrne Playground, Prospect Park and a choice of Manhattan subway lines. The boutique condominium building of only 10 is pet-friendly with a J-51 tax abatement in place until 2024. This is the perfect pad for inner-city professionals as it offers easy access to all corners of the city, and has eateries, cafes, transport and acres of parklands close by. It is immaculately presented throughout and ready to move in and enjoy straight away.

Features & Amenities

Interior Features

Building Washer Dryer Install Allowed

Building Information

Financial Details

Common Charges $356/mo
RE Taxes $504/yr ($42/mo)
Sale Price $610,000

Park 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 Neighborhood

Active Listings

110

Median Asking Price

$1.70M

Median $/Sqft

$1,376

Avg Days on Market

N/A

New This Week

15

Price Reduced

16%

Sold (30 Days)

20

Median Sale Price

$1.66M

Live data from RLS at REBNY • Updated 4/26/26, 12:48 AM EST

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Location

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678 UNION Street #3B, Park Slope, Kings County • Near 4 AVENUE and 5 AVENUE

Floor Plans

Floor Plan

Building Information

Official NYC property records for this building

10
Residential Units
R6A
Zoning District
Condominiums

Tax & Assessment

Assessed Value: $1,350,454
Land Value: $162,000
Exemptions: $0

Note: Individual unit taxes may differ. Verify current tax bills with NYC DOF.

Lot Area: 2,000 SF
Building Area: 5,880 SF
Built FAR: 2.94
Allowed FAR: 3

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

Frequently Asked Questions

Common questions about this property

The current listed common charges are $356 per month. Confirm the exact amount with the listing broker before making an offer.

The current listed annual property tax is $504, or roughly $42 per month. Verify the current assessment with your attorney before closing.

This property has 1 bedroom and 1 full bathroom.

The listed interior living area is 627 square feet. Verify dimensions independently during due diligence.

This listing is a condominium. Buyers receive a deed to their individual unit and own their space outright, subject to condo association rules.

Pets are permitted at this property. Contact the listing broker for weight limits or breed restrictions.

At the current list price of $625,000 for 627 sq ft, the asking price per square foot is approximately $997. 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) 416-7433
MLS® ID: RLS10649509
First Listed: 7/7/2020
Price Changed: 2/5/2021
Closed: 1/6/2021
Contract Date: 7/20/2020

Listing Courtesy of The Corcoran Group - Tetsuo Matsumoto

Listing Contact: (914) 374-7195

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 at REBNY

RLS Data display by Keller Williams NYC. Data last updated on 4/26/2026 at 4:48 AM UTC

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