Milton Coste

Licensed Real Estate Associate Broker

(917) 416-7433
740 UNION Street #1

For Sale · Listing by Douglas Elliman Real Estate

740 UNION Street #1

Park Slope, Brooklyn

$3,495,000

Interested in this property?
Active For Sale Co-op

$3,495,000

$1,517 per sq ft

740 UNION Street #1

Park Slope, Brooklyn

MLS® #RLS20115932

RLS at REBNY

Listing by Douglas Elliman Real Estate

Open Houses Scheduled

Saturday, September 19 • 1:30 PM – 3:00 PM

Sunday, September 20 • 1:30 PM – 3:00 PM

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

3
Bedrooms
2.5
Baths
2,304
Sq. Ft.
1899
Year Built

Quick Summary

Bedrooms 3
Bathrooms 3 full, 1 half
Living Area 2,304 sq ft
Year Built 1899
Ownership Co-op
Maintenance $690/mo
Neighborhood Park Slope
Floor 1 of 3

Property Highlights

  • Views: City
  • Style: WalkUp architecture
  • Character: Pre-war building (1899)

Property Details

Type Co-op
Ownership Stock Cooperative
Total Rooms 6
Baths 2 Full, 1 Half
Floor 1 of 3
View City
Pets Yes
Year Built 1899
Living Area 2,304 sq ft
Architectural Style WalkUp
Basement Other
Block/Lot 00956/0037

Listing History

Event Date Price Change
Listed Sep 17, 2026 $3,495,000 -
Currently Sep 17, 2026 $3,495,000 -

Description

740 Union Street #1 - the ultra-elusive townhouse alternative. A triplex condominium within a stunning 19th-century brownstone, right in the heart of prime Park Slope. Occupying the first three levels of a beautifully maintained brownstone, this two-bedroom plus office, two-and-a-half-bath home offers the space, character, and privacy of townhouse living with the ease of a condominium. Enter at the top of the stoop into an expansive parlor level designed for both everyday living and entertaining. The beautifully renovated kitchen boasts a 15 foot long marble countertop with enormous storage below. The high end kitchen pairs custom cabinetry and with WOLF , Fisher Paykel,and Miele appliances. Generous proportions flow from the dining area into the spacious, south-facing living room, creating a warm and inviting space equally suited for quiet dinners or entertaining a crowd. The residence offers two well-proportioned bedrooms, a separate home office, two full bathrooms and a powder room, along with a fully finished lower-level recreation room providing valuable additional space for a media room, gym, playroom, or guest area. Perhaps the home's greatest luxury is outside: exclusive use of the entire south-facing backyard. Bluestone pavers are extensive, mature plantings, professionaly designed and installed across multiple levels, creating a lush private retreat ideal for entertaining, quiet relaxation, or taking your gardening to the next level. The home was fully renovated in 2012 with thoughtfully improved over the years. Recent improvements include new windows throughout, a completely renovated foyer, a refinished stoop and solid mahogany entry door, a restored cornice, and freshly painted exterior ironwork. 740 Union Street places you between the neighborhood's celebrated shops, cafés, restaurants, and everyday conveniences along Fifth and Seventh Avenues. Prospect Park and Grand Army Plaza are just moments away, putting some of Brooklyn's best green space, culture, dining, and neighborhood life practically at your doorstep. Three floors of living space, an incredible private backyard, and stunning curb appeal-all within a classic Park Slope brownstone. Contact us today for your private appointment.

Features & Amenities

Interior Features

Building None Washer Hookup In Unit

Exterior Features

None

Appliances

Washer Dryer Allowed

Building Information

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

Financial Details

Maintenance $690/mo

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

81

Median Asking Price

$2.00M

Median $/Sqft

$1,385

Avg Days on Market

N/A

New This Week

17

Price Reduced

12%

Sold (30 Days)

39

Median Sale Price

$1.70M

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

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Location

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740 UNION Street #1, Park Slope, Kings County

Building Information

Official NYC property records for this building

1899
Year Built
127 years old
3
Floors
2
Residential Units
R6A
Zoning District
Two Family Dwellings

Tax & Assessment

Assessed Value: $211,140
Land Value: $33,480
Exemptions: $0

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

Lot Area: 1,710 SF
Building Area: 2,836 SF
Built FAR: 1.66
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 monthly maintenance are $690 per month. Confirm the exact amount with Milton Coste before making an offer.

This property has 3 bedrooms and 2 full bathrooms and 1 half bathroom.

The listed interior living area is 2,304 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 a co-op (stock cooperative). Buyers purchase shares in a corporation rather than real property, and the board must approve all sales.

Pet policy requires confirmation with Milton Coste.

At the current list price of $3,495,000 for 2,304 sq ft, the asking price per square foot is approximately $1,517. 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: RLS20115932
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 - Aran P Scott

Listing Contact: (646) 479-8408

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 11:26 PM UTC

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Park Slope Market Update

39 sales last 30 days · $2.00M median · 2.1 months supply

Read Full Report

New listings in this neighborhood

Quick Facts

Status Active Type Co-op Neighborhood Park Slope Borough Brooklyn
County Kings
Floor 1 of 3
Year Built 1899
First Listed 9/17/2026
Style WalkUp
Living Area 2,304 sqft
Maintenance $690/mo

Monthly Costs Estimate

Down Payment 20%

$699,000

Interest Rate Loading...

Source: Freddie Mac PMMS

Loan Term 30 years

Est. Monthly Payment

$0

Principal & Interest $0
PMI (under 20% down) $0
Maintenance $690
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

$52,425

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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