Milton Coste

Licensed Real Estate Associate Broker

(917) 416-7433

SOLD FOR $1,910,000

· Closed April 21, 2025

321 Union Street #1B
Closed For Sale Condo

$1,910,000

$1,149 per sq ft

321 Union Street #1B

Carroll Gardens, Brooklyn

MLS® #RLS11018737

RLS at REBNY

Listing by Compass

2

Bedrooms

2

Baths

1,663

Sq. Ft.

1920

Year Built

Quick Summary

Bedrooms 2
Bathrooms 2
Living Area 1,663 sq ft
Year Built 1920
Ownership Condo
HOA/Common Charges $921/mo
Property Taxes $5,604/yr
Neighborhood Carroll Gardens
Floor 1 of 4

Property Highlights

  • Climate Control: Central Air
  • Character: Pre-war building (1920)

Property Details

Type Condo
Ownership Condominium
Total Rooms 5
Baths 2 Full
Floor 1 of 4
Cooling Central Air
Pets Yes
Year Built 1920
Living Area 1,663 sq ft
Structure Type Duplex
Flooring Hardwood
Furnished Unfurnished
Parcel # 00428-1102
Block/Lot 00428/1102

Listing History

Event Date Price Change
Listed Oct 30, 2024 $1,999,000 -
Price Reduced Apr 22, 2025 $1,935,000 -3.2%
Currently May 1, 2026 $1,910,000 -1.3%

Description

Apartment 1B at 321 Union Street is a modern, oversized, two-bedroom duplex with a fantastic, south-facing backyard on one of Carroll Gardens’ most coveted blocks. On a great, residential stretch of Union Street, enter through a private, gated vestibule into the large, open, living-dining space. This home features an open layout that seamlessly connects the gracious living and dining areas to both the lower level and the quiet, rear-facing bedrooms. The kitchen has room for several bar stools, a suite of stainless steel appliances, and tall cabinetry with plenty of storage. Down the hall the primary bedroom enjoys a corner exposure. There is room for a King-sized bed, a windowed en suite bathroom, and two windows looking out onto the private garden. And it is one serious garden. At 25 feet wide, this garden is far better than you find in many $5 million dollar townhouses. There is plenty of room for outdoor living and dining areas, with a raised patio surrounded by lovely landscaping and trees. The second bedroom features two large closets and can fit a queen-sized bed. There are also interior stairs leading to a versatile lower rec space, a great extra space for storage, laundry, or a gym. 321 Union is a 7-unit condo in a fantastic location. Straddling the retail corridors of Smith Street and Carroll Street, you are close to the park, schools, subways, and all the amazing shop of restaurants of Carroll Gardens and Cobble Hill.

Features & Amenities

Interior Features

In Unit See Remarks Flooring: Hardwood

Appliances

Dryer Washer

Building Information

Building Data View Compliance & Permits
Total Units 7
Stories 4
Structure Duplex

Financial Details

Common Charges $921/mo
RE Taxes $5,604/yr ($467/mo)
Original Price $1,999,000
Sale Price $1,910,000
Previous Price $1,935,000

Carroll Gardens is defined by its deep front gardens and long-standing bakeries and restaurants along Court and Smith Streets. The real estate market features wide historic brownstones alongside new construction condominiums that maintain the low-rise building scale.

Carroll Gardens Live Market Data

View Neighborhood

Active Listings

34

Median Asking Price

$1.82M

Median $/Sqft

$1,344

Avg Days on Market

N/A

New This Week

2

Price Reduced

12%

Sold (30 Days)

9

Median Sale Price

$2.97M

Live data from RLS at REBNY • Updated 5/1/26, 8:56 AM EST

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Location

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321 Union Street #1B, Carroll Gardens, Kings County

Building Information

Official NYC property records for this building

4
Floors
7
Residential Units
R6B
Zoning District
Condominiums

Tax & Assessment

Assessed Value: $2,323,801
Land Value: $274,500
Exemptions: $0

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

Lot Area: 4,067 SF
Building Area: 8,934 SF
Built FAR: 2.2
Allowed FAR: 2

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 $921 per month. Confirm the exact amount with the listing broker before making an offer.

The current listed annual property tax is $5,604, or roughly $467 per month. Verify the current assessment with your attorney before closing.

This property has 2 bedrooms and 2 full bathrooms.

The listed interior living area is 1,663 square feet. Verify dimensions independently during due diligence.

According to MLS records, the building was constructed in 1920, making it approximately 106 years old.

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

Pet policy requires confirmation with the listing broker.

At the current list price of $1,910,000 for 1,663 sq ft, the asking price per square foot is approximately $1,149. 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: RLS11018737
First Listed: 10/30/2024
On Market: 10/30/2024
Price Changed: 4/22/2025
Closed: 4/21/2025
Contract Date: 10/7/2024

Listing Courtesy of Compass - Noah A Plener

Listing Contact: (917) 922-7345

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 5/1/2026 at 12:56 PM UTC

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