909 Union Street Brooklyn, NY 11215
Listing Courtesy of: REBNY / Corcoran Group

  909 Union Street Brooklyn, NY 11215

Active (22 Days)
$4,995,000 (USD)
7
BED
6
BATH
1,000
SQFT

Description

An amazing opportunity in a perfect Park Slope location! 909 Union Street is a five-story brick-and-limestone townhouse, currently configured as an owner's lower duplex with three simplex apartments above. Spanning approximately 5,300 square feet, it offers true flexibility: hold as a high-performing four-unit rental, convert to condos, or enjoy the mint owner's duplex with substantial rental income upstairs.

The owner's duplex has been thoughtfully renovated for effortless living. The parlor level delivers a nearly 60-foot great-room experience-an oversized living room and generous dining area, all designed to host beautifully. The chef's kitchen is a standout, featuring Bilotta cabinetry, Viking and Bosch appliances, and a River Granite center island with a prep sink, plus dual wall ovens (standard + convection) and a six-burner cooktop-a true cook's dream. The kitchen opens onto a spacious deck, which flows down to the back garden. A renovated powder room is also found on this level.

Downstairs, the garden level features a large bedroom and media room (currently used as the second bedroom). The primary suite opens directly to the garden. The en-suite bath is spa-like, with radiant heated floors, a double vanity, and a jacuzzi tub. A second full bath offers a marble shower and elegant marble-accented flooring. Carrara marble floors throughout the level are among the most recent upgrades, and the large utility/laundry room provides generous storage.

The three upper floors are configured as three charming two-bedroom residences, each with a washer/dryer and dishwasher, plus classic details like decorative moldings and fireplace mantels. The top-floor living room is crowned by a dramatic original stained-glass window-an unforgettable finishing touch.

Situated in the heart of Park Slope, within the original Park Slope Historic District, this home is moments from Grand Army Plaza, Prospect Park, the Brooklyn Museum, the Brooklyn Botanic Garden, Union Market, and access to the B/Q and 2/3 subway lines.

MLS #:
RLS20076927
Taxes
$25,920
Lot Size
1800 acres
Type
Multifamily
Year Built
1920
County
Kings County
Community
Park Slope

Listed By

Jacqueline Torren, Corcoran Group
Source
REBNY
Last checked Apr 5 2026 at 4:47 AM EDT
Bathroom Details
  • Full Bathrooms: 5
  • Half Bathroom: 1
Interior Features
  • Washer Dryer Allowed
  • Laundry: In Unit
  • Laundry: Washer Hookup
  • Smoke Free
Subdivision
  • Park Slope
Property Features
  • Fireplace: Decorative
  • Fireplace: 1
Heating and Cooling
  • Central Air
Basement Information
  • Other
Stories
  • 5
Location
   
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Estimated Monthly Mortgage Payment

*Based on Fixed Interest Rate withe a 30 year term, principal and interest only

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Disclaimer: Copyright 2026 Real Estate Board of New York (REBNY). All rights reserved. This information is deemed reliable, but not guaranteed. The information being provided is for consumers’ personal, non-commercial use and may not be used for any purpose other than to identify prospective properties consumers may be interested in purchasing. Data last updated 4/4/26 21:47