Milton Coste

Licensed Real Estate Associate Broker

(917) 416-7433

SOLD FOR $4,750,000

Listed at $4,300,000 · Sold 10.5% above asking · Closed November 13, 2023

828 Union Street

$4,300,000

$1,044 per sq ft

828 Union Street

Park Slope, Brooklyn

MLS® #RLS10920297

RLS at REBNY

Listing by Compass

4

Bedrooms

3.5

Baths

4,120

Sq. Ft.

1905

Year Built

Quick Summary

Bedrooms 4
Bathrooms 3 full, 1 half
Living Area 4,120 sq ft
Year Built 1905
Ownership None
Property Taxes $11,364/yr
Neighborhood Park Slope
Floor 1 of 3

Property Highlights

  • Character: Pre-war building (1905)

Property Details

Type Single Family Residence
Ownership None
Total Rooms 10
Baths 2 Full, 1 Half
Floor 1 of 3
Pets Yes, CatsOk, DogsOk
Year Built 1905
Living Area 4,120 sq ft
Structure Type Townhouse
Furnished Unfurnished
Parcel # 01065-0010
Block/Lot 01065/10

Description

Spanning 4,120 square feet and four stories, 828 Union Street is a grand single-family brownstone nestled on a bucolic block in prime Park Slope. Measuring 20’ wide with ceilings up to 12 feet, the house features impressive and well-maintained period details. Up the stoop is the stately and grand facade, which is in pristine condition. There is an immediate sense of grandeur on the parlor floor with 12’ ceilings and original details including moldings, mirrors, pocket doors and a fireplace. The entire floor is dedicated to entertaining, with a 32’ long living room and a formal 19’ x 15’ dining area in the rear, which currently functions as a media room. Downstairs, the garden level is centered around a large eat-in kitchen with new Henrybuilt cabinets, a custom walnut banquette and a brand new, state of the art appliance package including a Sub-Zero refrigerator, Wolf oven and Viking dishwasher. Off the kitchen is a convenient and thoughtfully-designed mud room with a full-size washer and dryer and direct access to the sunny south-facing backyard stretching 35’ deep. The garden level is complete with a large family room overlooking Union Street with unique old-world features including an original coal stove and huge oak pocket doors. The third level of the home is the grand primary suite, spanning 1,000 square feet with ceilings up to 10 feet. The 19’ x 22’ bedroom is extremely spacious with original period cabinetry and mantles. The rear of the parlor has a large sitting home that could also function as an office or additional bedroom. The upper level of the home encompasses two large bedrooms with original mantles and fireplaces, as well as two auxiliary rooms that can serve as additional bedrooms or home offices. 828 Union Street is ideally located just one and a half blocks from Prospect Park in the PS 321 school district. Enjoy the best of Brooklyn’s parks, restaurants, shopping and museums with convenient access to Manhattan via several subway lines within a few blocks.

Features & Amenities

Interior Features

See Remarks

Building Information

Total Units 2
Stories 3
Structure Townhouse

Financial Details

RE Taxes $11,364/yr ($947/mo)
Sale Price $4,750,000

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

92

Median Asking Price

$1.75M

Median $/Sqft

$1,439

Avg Days on Market

N/A

New This Week

18

Price Reduced

12%

Sold (30 Days)

20

Median Sale Price

$1.67M

Live data from RLS at REBNY • Updated 3/26/26, 10:41 PM EST

Similar Listings in Park Slope

View All

Location

Loading map...

828 Union Street, Park Slope, Kings County

Floor Plans

Floor Plan
MLS® ID: RLS10920297
First Listed: 10/26/2023
On Market: 3/23/2022
Closed: 11/13/2023
Contract Date: 3/23/2022

Listing Courtesy of Compass - Michael Rubin

Listing Contact: (347) 880-0349

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 3/27/2026 at 2:41 AM UTC

Buying in NYC? Start Here

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