129 MARTENSE Street #4A
MLS® #RLS11006052
Listing by Serhant
3
Bedrooms
2
Baths
1,226
Sq. Ft.
2018
Year Built
Quick Summary
Property Highlights
- Views: City
- Exposure: South facing
- Outdoor Space: Terrace
Property Details
Listing History
| Event | Date | Price | Change |
|---|---|---|---|
| Listed | Sep 3, 2024 | $885,000 | - |
| Price Reduced | Apr 9, 2025 | $799,000 | -9.7% |
| Currently | May 7, 2026 | $770,000 | -3.6% |
Description
OPEN HOUSE BY APPOINTMENT ONLY
Unit 4A at 129 Martense is a spacious three-bedroom duplex penthouse with a massive private terrace.
Recently constructed, the apartment features designer finishes, split-unit heating and cooling, SMART home features, in-unit washer/dryer, high ceilings, and private outdoor space. The open chef's kitchen has been outfitted with custom gray and white wood cabinetry, white Caesarstone countertops, and a suite of matte-gray GE graphite appliances. The bathrooms have heated floors, frameless glass shower partitions, and spacious vanities with great storage. Large bay windows lend to incredible light, and the entire apartment has Southern exposures. There are oak floors throughout. Unit 4A also comes with a large storage room in the basement.
The 8-unit building offers bike storage and Video Security. It is close to nearby public transportation (B/Q and 2/5 at Church Avenue). Situated on a tree-lined block at the intersection of four dynamic neighborhoods: Prospect Lefferts Gardens, Flatbush, Prospect Park South and Ditmas Park, it is at the hub of the best amenities Brooklyn has to offer. Enjoy the close proximity to acclaimed restaurants, Prospect Park, The Botanic Gardens, and Kings Theatre.
All available for under $1M, this is a fantastic opportunity!
Features & Amenities
Interior Features
Exterior Features
Building Information
Financial Details
About Flatbush
View All Flatbush ListingsFlatbush features one of Brooklyn's most varied housing stocks, including grand detached Victorians along Ocean Avenue, limestone and brownstone rowhouses, prewar apartment buildings, and brick townhomes within landmarked districts like Prospect Park South and Ditmas Park. The Q, 2, and 5 trains connect the neighborhood to Manhattan, while Prospect Park's 526 acres of green space border the northern edge. The restored Kings Theatre, a 1920s-era landmark performance venue, and Erasmus Hall High School, founded in 1786, are among the area's most notable architectural features.
Flatbush Live Market Data
View NeighborhoodActive Listings
50
Median Asking Price
$537K
Median $/Sqft
$741
Avg Days on Market
N/A
New This Week
0
Price Reduced
22%
Sold (30 Days)
3
Median Sale Price
$443K
Live data from RLS at REBNY • Updated 5/7/26, 3:54 PM EST
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Location
129 MARTENSE Street #4A, Flatbush, Kings County
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Building Information
Official NYC property records for this building
Tax & Assessment
Note: Individual unit taxes may differ. Verify current tax bills with NYC DOF.
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
Listing Data
RLS® at REBNY (Real Estate Board of New York) via Trestle API. Updated in real-time.
Building Data
NYC PLUTO (Primary Land Use Tax Lot Output), NYC Department of City Planning. Updated quarterly.
Market Data
RLS® at REBNY (Real Estate Board of New York). Live data updated in real-time.
Map & Location
OpenStreetMap contributors via Leaflet. Geocoding via Nominatim.
All data is provided for informational purposes only and should be independently verified. See our Data Sources Policy for more information.
Frequently Asked Questions
Common questions about this property
The current listed common charges are $778 per month. Confirm the exact amount with the listing broker before making an offer.
This property has 3 bedrooms and 2 full bathrooms.
The listed interior living area is 1,226 square feet. Verify dimensions independently during due diligence.
According to MLS records, the building was constructed in 2018, making it approximately 8 years old.
This listing is a condominium. Buyers receive a deed to their individual unit and own their space outright, subject to condo association rules.
Pets are permitted at this property. Contact the listing broker for weight limits or breed restrictions.
At the current list price of $770,000 for 1,226 sq ft, the asking price per square foot is approximately $628. 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 [email protected]. 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) 416-7433Listing Courtesy of Serhant - Margaret Chong
Listing Contact: (405) 209-4698
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 Data display by Keller Williams NYC. Data last updated on 5/7/2026 at 7:54 PM UTC