Milton Coste

Licensed Real Estate Associate Broker

(917) 416-7433
361 UNION Street #PENTHOUSE

For Sale · Listing by Douglas Elliman Real Estate

361 UNION Street #PENTHOUSE

Carroll Gardens, Brooklyn

$4,500,000

Interested in this property?
Active For Sale Triplex

$4,500,000

$2,147 per sq ft

361 UNION Street #PENTHOUSE

Carroll Gardens, Brooklyn

MLS® #RLS20115890

RLS at REBNY

Listing by Douglas Elliman Real Estate

Open House Scheduled

Sunday, September 20 • 11:00 AM – 12:30 PM

REBNY 2025: signed Buyer Representation Agreement required before any showing.

5
Bedrooms
3.5
Baths
2,096
Sq. Ft.
1899
Year Built

Quick Summary

Bedrooms 5
Bathrooms 4 full, 1 half
Living Area 2,096 sq ft
Year Built 1899
Ownership None
HOA/Common Charges $1,283/mo
Neighborhood Carroll Gardens
Floor 3 of 3

Property Highlights

  • Views: City, Panoramic
  • Exposure: North,South facing
  • Outdoor Space: None, Rooftop

Property Details

Type Triplex
Ownership None
Total Rooms 15
Baths 3 Full, 1 Half
Floor 3 of 3
View City, Panoramic
Exposure North,South
Cooling Other
Pets Yes
Year Built 1899
Living Area 2,096 sq ft
Architectural Style WalkUp
Basement Other
Parcel # 00429-0074
Block/Lot 00429/0074

Listing History

Event Date Price Change
Listed Sep 17, 2026 $4,500,000 -
Currently Sep 17, 2026 $4,500,000 -

Description

Welcome to the Penthouse Triplex at 361 Union Street 5 Bedrooms 3.5 Bathrooms Three Levels Private Penthouse Roof Occupying the upper three floors of 361 Union Street, the Penthouse Triplex is an expansive five-bedroom residence defined by exceptional natural light, beautifully considered interiors, and an extraordinary private roof terrace. Spanning three distinct levels, the home pairs the scale and separation of townhouse living with the elevated perspective and outdoor space of a penthouse. The residence begins with a private entry from the parlor floor, where a dedicated staircase leads to the first of its three living levels. Here, the home opens into an expansive living, dining, and entertaining floor with high ceilings, wide-plank white oak floors, and windows at both the front and rear. The beautifully appointed kitchen is positioned at the center of the floor and features custom warm-oak cabinetry paired with Calacatta stone distinguished by expressive charcoal-gray veining. A substantial island provides generous workspace, storage, and seating, while a premium appliance package is anchored by a Bertazzoni induction cooktop and oven, seamlessly integrated for a clean, considered finish. The living room offers a gracious setting for everyday life, while the centrally positioned kitchen creates a natural separation from the dining room, establishing a distinct yet connected space for entertaining. A bedroom and full bathroom complete the level, offering flexibility as a guest room, home office, or additional sleeping quarters. One flight above, the residence transitions to its primary bedroom level. The spacious primary suite occupies the front of the home and is complemented by a substantial walk-in closet and beautifully finished en-suite bath. Large-format white marble with delicate gray veining creates a serene backdrop, complemented by polished chrome fixtures, concealed shower controls, and a custom recessed niche. A furniture-inspired natural oak double vanity brings warmth and craftsmanship to the space, with woven cane-front cabinetry, sculpted detailing, undermount sinks, and a crisp white stone countertop. Two additional bedrooms, a second full bathroom, and a dedicated washer and dryer complete this floor, thoughtfully separating the home's private quarters from the entertaining spaces below. The third level introduces another dimension to the residence. A fifth bedroom with an adjacent powder room creates a flexible penthouse retreat ideal for guests, a home office, den, or private lounge. From here, the home opens directly onto an exceptional 903-square-foot private roof terrace, creating a true outdoor extension of the residence. Stretching approximately 20 feet wide and more than 45 feet long, the terrace offers remarkable scale for a brownstone condominium and ample room to create distinct areas for outdoor dining, lounging, entertaining, and gardening. Surrounded by open sky and overlooking the surrounding Carroll Gardens roofscape, it provides an extraordinary setting for everything from quiet mornings to large-scale entertaining. With five bedrooms, three-and-a-half bathrooms, three substantial interior levels, and exceptional private outdoor space, the Penthouse Triplex offers a compelling alternative to townhouse living-combining generous proportions, beautifully executed finishes, and the privacy of an upper-floor residence in one of Brooklyn's most coveted brownstone neighborhoods. Set in the heart of Carroll Gardens, 361 Union Street is surrounded by the neighborhood's signature tree-lined brownstone blocks, historic architecture, and distinctly village-like character. Just moments from the cafés, restaurants, boutiques, and everyday conveniences of Smith and Court Streets, the home is also close to beloved Carroll Park and its year-round Sunday Greenmarket. Neighborhood favorites including Frankies 457 Spuntino, Lucali, and F&F Pizzeria are all part of the surrounding dining scene. With the Carroll Street F/G station just around the corner, the location pairs the intimacy and charm of quintessential brownstone Brooklyn with exceptionally convenient access to the rest of the city. The complete terms are in an offering plan available from the Sponsor (File No: CD25-0377)

Features & Amenities

Interior Features

Walk In Closets Building None

Exterior Features

Private Outdoor Space Over60 Sqft None Rooftop

Appliances

Washer Dryer Allowed

Building Information

Building Data View Compliance & Permits
Total Units 2
Stories 3
Style WalkUp

Financial Details

Common Charges $1,283/mo

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

$2.37M

Median $/Sqft

$1,361

Avg Days on Market

N/A

New This Week

7

Price Reduced

18%

Sold (30 Days)

7

Median Sale Price

$2.52M

Live data from RLS at REBNY • Updated 9/17/26, 7:55 PM EST

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Location

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361 UNION Street #PENTHOUSE, Carroll Gardens, Kings County

Floor Plans

Floor Plan 1

Building Information

Official NYC property records for this building

1899
Year Built
127 years old
3
Floors
3
Residential Units
R6B
Zoning District
Walk-Up Apartments

Tax & Assessment

Assessed Value: $280,740
Land Value: $37,020
Exemptions: $0

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

Lot Area: 1,800 SF
Building Area: 3,600 SF
Built FAR: 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 $1,283 per month. Confirm the exact amount with Milton Coste before making an offer.

This property has 5 bedrooms and 3 full bathrooms and 1 half bathroom.

The listed interior living area is 2,096 square feet. Verify dimensions independently during due diligence.

According to MLS records, the building was constructed in 1899, making it approximately 127 years old.

This listing is None

Pets are permitted at this property. Contact Milton Coste for weight limits or breed restrictions.

At the current list price of $4,500,000 for 2,096 sq ft, the asking price per square foot is approximately $2,147. 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 milton@miltoncoste.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: RLS20115890
First Listed: 9/17/2026
On Market: 9/17/2026
Price Changed: 9/17/2026
Contract Date: 9/17/2026

Listing Courtesy of Douglas Elliman Real Estate - Alexander F Maroni

Listing Contact: (917) 704-3102

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 9/17/2026 at 11:55 PM UTC

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Carroll Gardens Market Update

7 sales last 30 days · $2.37M median · 4.9 months supply

Read Full Report

New listings in this neighborhood

Quick Facts

Status Active Type Triplex Neighborhood Carroll Gardens Borough Brooklyn
County Kings
Floor 3 of 3
Year Built 1899
First Listed 9/17/2026
Style WalkUp
Living Area 2,096 sqft
Common Charges $1,283/mo

Monthly Costs Estimate

Down Payment 20%

$900,000

Interest Rate Loading...

Source: Freddie Mac PMMS

Loan Term 30 years

Est. Monthly Payment

$0

Principal & Interest $0
PMI (under 20% down) $0
Common Charges $1,283
Total Monthly $0

Estimates only. Consult a lender for exact figures.

Mansion tax applies at this price point

New York State charges the buyer a mansion tax on residential purchases at $1,000,000 or more. At this asking price the tier is $3M to $4,999,999 at 1.50%, applied to the whole purchase price. It is due in cash at closing and cannot be financed.

Estimated mansion tax at asking

$67,500

Run the numbers on a different offer price

Estimate based on the asking price. Confirm your own obligation with your real estate attorney.

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