Milton Coste

Licensed Real Estate Associate Broker

(917) 416-7433
414 3RD Street #3R/4R

For Sale · Listing by Brown Harris Stevens Brooklyn LLC

414 3RD Street #3R/4R

Park Slope, Brooklyn

$1,000,000

Interested in this property?
Active For Sale Co-op

$1,000,000

$870 per sq ft

414 3RD Street #3R/4R

Park Slope, Brooklyn

MLS® #RLS20114254

RLS at REBNY

Listing by Brown Harris Stevens Brooklyn LLC

Open House Scheduled

Saturday, September 12 • 3:00 PM – 4:30 PM

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

3
Bedrooms
2
Baths
1,150
Sq. Ft.
1940
Year Built

Quick Summary

Bedrooms 3
Bathrooms 2
Living Area 1,150 sq ft
Year Built 1940
Ownership Co-op
Maintenance $782/mo
Neighborhood Park Slope
Floor 2 of 4

Property Highlights

  • Views: Other
  • Exposure: South facing
  • Fireplace: 1 fireplace

Property Details

Type Co-op
Ownership Stock Cooperative
Total Rooms 5
Baths 2 Full
Floor 2 of 4
View Other
Exposure South
Cooling Other
Pets Yes
Year Built 1940
Living Area 1,150 sq ft
Architectural Style WalkUp
Basement Other
Block/Lot 00982/0029

Listing History

Event Date Price Change
Listed Sep 10, 2026 $1,000,000 -
Currently Sep 11, 2026 $1,000,000 -

Description

This top floor, Park Slope duplex is an investment opportunity on arguably one of the best blocks in Brooklyn! Situated in center slope, between 5th and 6th Aves, in a charming Prewar limestone walkup are two combined units, 3R and 4R, that create a very spacious duplex. This quiet and bright Southern facing unit, features three bedrooms and two full baths. Renovate the duplex or remodel the two units to individually separate them and turn one over for a profit. This already generous home feels even bigger due to its open, loft-like layout and oversized windows with lovely, lush garden views. Upon entering, one appreciates many beautiful pre-war elements and architectural details that contribute to the beauty and potential of this special home: exposed brick, hardwood floors, high ceilings, a decorative fireplace and a windowed kitchen, to name a few. This as-is unit also includes two storage units and a convenient laundry facility in the basement. 414 3rd Street is a pet friendly, pre-war walk-up cooperative with only seven units. It is situated just half a block above 5th avenue. Residents can appreciate living on historic 3rd Street, with its tree-lined, boulevard sidewalks directly across from the weekly farmer's market at JJ Byrne park. This boutique co-op is also minutes away from some of the best restaurants in Park Slope (among them the Stone Park Cafe and al di la) and has convenient access to the F, G, and R train lines. There is currently an assessment of $470/mo for various fees related to the sale of these two units.

Features & Amenities

Interior Features

High Ceilings Storage Building Other Fireplace (1)

Exterior Features

None

Building Information

Building Data View Compliance & Permits
Total Units 7
Stories 4
Style WalkUp

Financial Details

Maintenance $782/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

65

Median Asking Price

$1.80M

Median $/Sqft

$1,405

Avg Days on Market

N/A

New This Week

24

Price Reduced

15%

Sold (30 Days)

42

Median Sale Price

$1.70M

Live data from RLS at REBNY • Updated 9/10/26, 9:25 PM EST

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Location

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414 3RD Street #3R/4R, Park Slope, Kings County

Floor Plans

Floor Plan 1

Building Information

Official NYC property records for this building

1940
Year Built
86 years old
4
Floors
7
Residential Units
R6B
Zoning District
Walk-Up Apartments

Tax & Assessment

Assessed Value: $1,332,900
Land Value: $13,500
Exemptions: $4,460

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

Lot Area: 2,310 SF
Building Area: 6,072 SF
Built FAR: 2.63
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 monthly maintenance are $782 per month. Confirm the exact amount with Milton Coste before making an offer.

This property has 3 bedrooms and 2 full bathrooms.

The listed interior living area is 1,150 square feet. Verify dimensions independently during due diligence.

According to MLS records, the building was constructed in 1940, making it approximately 86 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.

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

At the current list price of $1,000,000 for 1,150 sq ft, the asking price per square foot is approximately $870. 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: RLS20114254
First Listed: 9/10/2026
On Market: 9/10/2026
Price Changed: 9/10/2026
Contract Date: 9/10/2026

Listing Courtesy of Brown Harris Stevens Brooklyn LLC - Joanna Mayfield Marks

Listing Contact: (718) 613-2810

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 9/11/2026 at 1:25 AM UTC

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Park Slope Market Update

42 sales last 30 days · $1.80M median · 1.5 months supply

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New listings in this neighborhood

Quick Facts

Status Active Type Co-op Neighborhood Park Slope Borough Brooklyn
County Kings
Floor 2 of 4
Year Built 1940
First Listed 9/10/2026
Style WalkUp
Living Area 1,150 sqft
Maintenance $782/mo

Monthly Costs Estimate

Down Payment 20%

$200,000

Interest Rate Loading...

Source: Freddie Mac PMMS

Loan Term 30 years

Est. Monthly Payment

$0

Principal & Interest $0
PMI (under 20% down) $0
Maintenance $782
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 $1M to $1,999,999 at 1.00%, applied to the whole purchase price. It is due in cash at closing and cannot be financed.

Estimated mansion tax at asking

$10,000

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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