Milton Coste

Licensed Real Estate Associate Broker

(917) 416-7433

SOLD FOR $1,952,500

Listed at $1,865,000 · Sold 4.7% above asking · Closed August 7, 2025

399 Prospect Avenue
Looking for something similar?
Closed For Sale Multi Family

$1,865,000

399 Prospect Avenue

Park Slope, Brooklyn

MLS® #RLS20006404

RLS at REBNY

Listing by Brennan Realty Services LLC

3

Bedrooms

3.5

Baths

N/A

Sq. Ft.

1901

Year Built

Quick Summary

Bedrooms 3
Bathrooms 3 full, 1 half
Lot Size 1,250 sq ft
Year Built 1901
Ownership None
Neighborhood Park Slope

Property Highlights

  • Character: Pre-war building (1901)

Property Details

Type Multi Family
Ownership None
Total Rooms 5
Baths 2 Full, 1 Half
Pets Yes
Year Built 1901
Structure Type MultiFamily
Furnished Unfurnished
Lot Size 1,250 sq ft
Parcel # 01112-0080
Block/Lot 01112/0079

Description

Own a Charming Townhouse in the Slope! Welcome to 399 Prospect Avenue, a beautifully maintained two-family townhouse perfectly positioned on the border of Park Slope and South Slope. Offering exceptional flexibility, this home is ideal whether you're seeking a move-in-ready residence with rental income or envisioning a spacious four-bedroom single-family retreat. The garden-level duplex invites you in with an open, thoughtfully designed layout, where exposed brick and original wood beams create warmth and character. The bright and airy living room flows seamlessly into a modern, spacious kitchen, complete with wide glass sliding doors that open onto a private patio and lush backyard—a serene oasis perfect for morning coffee, entertaining, or unwinding. This level also includes a half bath and versatile spaces that can be customized to suit your needs. Upstairs, you'll find two well-appointed bedrooms and a full bathroom. The primary bedroom features direct access to a generous private deck with a staircase leading down to the garden. The second bedroom, currently used as an office, is full of charm, showcasing original details such as decorative moldings and fireplaces. The top floor boasts a bright and airy one-bedroom rental unit, featuring a sun-filled front bedroom with ample closet space, an open kitchen-living area, and a full bathroom—offering an excellent opportunity for rental income or a private guest suite. This exceptional townhouse is a fantastic condo alternative, providing private outdoor space, historic character, and versatility. Live comfortably while generating rental income, or easily convert the home into a spacious single-family haven. Ideally situated near P.S. 10 and just minutes from New Voices, Prospect Park, Nitehawk Cinema, boutique shops, top-rated restaurants, supermarkets, multiple subway and bus lines, and the vibrant cultural experiences that make Park Slope, South Slope/Greenwood Heights some of Brooklyn’s most sought-after neighborhoods. Don’t miss this rare opportunity to own a piece of Brooklyn charm! Contact us today for more details and to schedule a showing.

Features & Amenities

Interior Features

In Unit

Building Information

Total Units 2
Stories 2
Structure MultiFamily

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

83

Median Asking Price

$1.73M

Median $/Sqft

$1,437

Avg Days on Market

N/A

New This Week

8

Price Reduced

12%

Sold (30 Days)

22

Median Sale Price

$1.67M

Live data from RLS at REBNY • Updated 3/23/26, 8:33 PM EST

Similar Listings in Park Slope

View All

Location

Loading map...

399 Prospect Avenue, Park Slope, Kings County

MLS® ID: RLS20006404
First Listed: 3/3/2025
On Market: 3/3/2025
Price Changed: 3/3/2025
Closed: 8/7/2025
Contract Date: 3/3/2025

Listing Courtesy of Brennan Realty Services LLC - Matteo Caruso

Listing Contact: (347) 728-0251

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 3/24/2026 at 12:33 AM UTC

Buying Multi-Family? Start Here

2–4 Unit Multi-Family Investing in NYC

Cap rates, financing, and what to look for in small multifamily.

Read article

NYC Closing Costs: Complete Breakdown

Buyer and seller closing costs itemized, including what to budget for.

Read article

NYC Mansion Tax: 2026 Guide

How the tiered mansion tax works for purchases over $1M.

Read article

NYC Real Estate Market Report 2026

Data-driven analysis of prices, inventory, and trends across NYC.

Read article

Interested in this property?

Get a response within 2 hours

Your info is secure and never shared.

View Active Listings Call Milton