Updated a day ago
In contract
121 Saint Marks Ave
Prospect Heights, Brooklyn | Carlton Ave & Flatbush Ave
8 Rooms6 Beds4.5 Baths4,000 Square FeetMulti-Family
$6,250,000
floors / apts4 / 3
Lot Size21'x147'
Built Size21'x50'
ZoneR6B
Building TypeTownhouse
RE Taxes$9,924
Price Per SF
$1,563
Listing Features
- Original Details
Outdoor space and views
- Deck
- Garden
- Porch
Building Amenities
- Voice Intercom
- Garden
Property Description for 121 Saint Marks Ave
121 Saint Marks Avenue
On a picturesque, tree-lined block in the heart of Prospect Heights, 121 Saint Marks Avenue is a classic 21-foot-wide Brooklyn brownstone offering exceptional scale, flexibility, and opportunity.
Set on an extra-deep block, the home unfolds across approximately 4,000 square feet and is currently configured as an owner's triplex over a private one-bedroom garden apartment. Behind its handsome historic facade lies a residence defined by grand proportions, soaring ceilings, and the timeless character that makes Brooklyn townhouses so beloved.
The owner's triplex begins on the gracious parlor level, where tall windows fill the living room with natural light and original details speak to the home's historic charm. A formal dining room creates an elegant setting for entertaining, flowing naturally toward the kitchen and out to a deck overlooking the garden below. It is a floor designed equally for lively gatherings and quiet evenings at home.
Upstairs, the second and third floors offer a generous and flexible layout with multiple bedrooms and the potential for home offices, libraries, or creative spaces. The home's impressive 21-foot width allows each room to feel open and comfortable, a rarity even among Brooklyn townhouses.
Below, the garden level is configured as a one-bedroom apartment with its own entrance and direct access to the garden, ideal for rental income, guests, or conversion into a spectacular single-family residence.
The property will be delivered vacant, presenting a rare opportunity for the next owner to move right in, create a custom townhouse, or design the ideal live-plus-income configuration.
Just moments from the cafés and restaurants of Vanderbilt Avenue, the cultural energy of the Barclays Center district, and the green expanses of Prospect Park, the location offers the very best of Brooklyn living. Multiple subway lines nearby provide easy access to Manhattan and beyond.
On a picturesque, tree-lined block in the heart of Prospect Heights, 121 Saint Marks Avenue is a classic 21-foot-wide Brooklyn brownstone offering exceptional scale, flexibility, and opportunity.
Set on an extra-deep block, the home unfolds across approximately 4,000 square feet and is currently configured as an owner's triplex over a private one-bedroom garden apartment. Behind its handsome historic facade lies a residence defined by grand proportions, soaring ceilings, and the timeless character that makes Brooklyn townhouses so beloved.
The owner's triplex begins on the gracious parlor level, where tall windows fill the living room with natural light and original details speak to the home's historic charm. A formal dining room creates an elegant setting for entertaining, flowing naturally toward the kitchen and out to a deck overlooking the garden below. It is a floor designed equally for lively gatherings and quiet evenings at home.
Upstairs, the second and third floors offer a generous and flexible layout with multiple bedrooms and the potential for home offices, libraries, or creative spaces. The home's impressive 21-foot width allows each room to feel open and comfortable, a rarity even among Brooklyn townhouses.
Below, the garden level is configured as a one-bedroom apartment with its own entrance and direct access to the garden, ideal for rental income, guests, or conversion into a spectacular single-family residence.
The property will be delivered vacant, presenting a rare opportunity for the next owner to move right in, create a custom townhouse, or design the ideal live-plus-income configuration.
Just moments from the cafés and restaurants of Vanderbilt Avenue, the cultural energy of the Barclays Center district, and the green expanses of Prospect Park, the location offers the very best of Brooklyn living. Multiple subway lines nearby provide easy access to Manhattan and beyond.
Listing History for 121 Saint Marks Ave
Now
04/21/2026
Contract Signed by Jessica Buchman
Corcoran
Launch
Building Details for 121 Saint Marks Ave
OwnershipMulti-Family
Building TypeTownhouse
Service LevelVoice Intercom
AgePre-War
AccessWalk-up
Year Built1910
Floors/Apts4/3
Transit and Citi Bike
Subway
7 Av
0.17 miles
Bergen St
0.17 miles
Grand Army Plaza
0.3 miles
Atlantic Av-Barclays Ctr
0.42 miles
Clinton-Washington Avs
0.43 miles
Railroad
Atlantic TerminalLong Island Rail Road
0.33 miles
Citi Bike
Carlton Ave & Dean St
0.13 miles
7 Ave & Park Pl
0.14 miles
Contact Agents
Contact Agents
Prospect Heights | Brooklyn
Quick Profile
Prospect Heights is a small residential neighborhood surrounded by big attractions. It’s rich in culture and offers the perfect blend of old Brooklyn charm and modern-day hipness.
Residents of this tight-knit community include young professionals, families and long-time residents. It’s a walkers paradise - just steps from Prospect Park and a short walking distance to neighborhoods like Downtown Brooklyn, Fort Green and Clinton. You’re close to culture too. Brooklyn Museum, Brooklyn Library, Brooklyn Botanical Garden, Brooklyn Academy of Music and the Barclays Center are all nearby.
Prospect Heights is bordered by Flatbush Avenue to the west, Washington Avenue to the east, Atlantic Avenue and Dean Street to the north and Eastern Parkway to the south.
Prospect Heights, like many areas of New York City, was first inhabited by indigenous tribes and eventually settled by the Dutch and turned into farmland.
A significant part of the Revolutionary War was fought in Prospect Heights and the surrounding areas. Known as the Battle of Brooklyn, it was the first military engagement following the Declaration of Independence. Things didn’t go so well for American forces so they retreated and the British occupied Manhattan for several years after the Battle of Brooklyn.
In 1867, the opening of Prospect Park caused major housing growth in Prospect Heights. The middle-class neighborhood was soon populated by Jewish, Italian, and Irish workers. Many of which were shop-owners or employed as laborers in nearby factories.
Housing in Prospect Heights includes single-family row houses, historic townhouses, co-ops, and new luxury condos. The median listed price for a 1-bedroom in Prospect Heights is $680,000 with an average price per square foot is $944.
The neighborhood's commercial artery runs along Vanderbilt Avenue and Washington Avenue. The variety of businesses adds to the charm of the neighborhood. They include bars, pubs, restaurants and mom-and-pop stores of all types. The shops and eateries are a perfect alternative to the big-name attractions that bracket the neighborhood. It's a little bit of everything in this neighborhood.
Subways are plentiful in Prospect Heights. Its proximity to Manhattan is another perk of the neighborhood. It's about a half-hour train ride. The B, D, N, Q, R, 2, 3, 4 and 5 subway lines all serve the Atlantic Avenue/Barclays Center station. 2, 3, 4, B and Q trains cover the neighborhood and the A and C trains are nearby too.
All information furnished regarding property for sale, rental or financing is from sources deemed reliable, but no warranty or representation is made as to the accuracy thereof and same is submitted subject to errors, omissions, change of price, rental or other conditions, prior sale, lease or financing or withdrawal without notice. All dimensions are approximate. For exact dimensions, you must hire your own architect or engineer.
OLR ID: 105776TH
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