For Sale · Listing by Serhant
455 KEAP Street #PH
Williamsburg, Brooklyn
$3,100,000
455 KEAP Street #PH
MLS® #RLS20113121
Listing by Serhant
- 4
- Bedrooms
- 2.5
- Baths
- 2,396
- Sq. Ft.
- 2026
- Year Built
Quick Summary
Property Highlights
- Views: City
- Exposure: East,North,South,West facing
- Outdoor Space: None, Balcony, Rooftop
Property Details
Listing History
| Event | Date | Price | Change |
|---|---|---|---|
| Listed | Sep 8, 2026 | $3,100,000 | - |
| Currently | Sep 8, 2026 | $3,100,000 | - |
Description
Come home to a rare penthouse triplex on one of Williamsburg's most coveted blocks, accessed by your own PRIVATE KEY ELEVATOR straight into the residence. A masterful three bedroom plus home office, two and a half bath layout with FOUR EXPOSURES and fourteen foot ceilings on the main level, a scale almost never seen in this market. A private storage unit is included. The main floor is wrapped in wide plank Terra Legno oak, unbroken from room to room, anchored by a sculptural staircase and a two tiered chef's kitchen finished top to bottom in custom Maderas wood cabinetry with an Austral Fantasy honed marble island, opening onto its own private balcony. Living and dining flow together beneath soaring ceilings and oversized windows, the living room walls finished in a light stone limewash. A standout powder room off its own hallway is fully limewashed floor to ceiling, finished with a travertine pedestal sink, cove lighting, and a Verde Ming honed marble floor, a design moment few homes in this price point can claim. Upstairs, the same wide plank Terra Legno oak continues underfoot beneath nine foot ceilings, holding a true primary suite with a private balcony, a walk in closet, and a windowed spa bath sheathed floor to ceiling in Bariazzo Ivory White Deco porcelain, the floor laid in its signature checkered pattern, a limewashed ceiling and cove lighting overhead, with a floating double vanity and oversized glass shower. Two additional bedrooms share a second full bath in a warmer stone palette, floor to ceiling greige tile, a limewashed ceiling, cove lighting, a deep soaking tub with rain shower, and a floating fluted wood vanity topped in marble. A skylit third bedroom completes the level. At the top level, a windowed home office, flexible as a fourth bedroom, opens onto TWO PRIVATE ROOF DECKS with open Manhattan skyline views, including the Empire State Building. Combined with the private balconies off the kitchen and primary suite, that's nearly 800 square feet of outdoor space, entirely private, entirely yours. Located on Keap Street in the heart of Williamsburg, just one block to the G and L trains, moments from the Williamsburg Bridge, and surrounded by the neighborhood's most celebrated names in food, Kellogg's Diner right at your corner, St. Anselm, Ainslie, and old school DeStefano's Steakhouse on Lorimer all a short walk away, alongside the boutiques and galleries that made this stretch of Brooklyn iconic. This is a rare opportunity to own one of Brooklyn's most exceptional penthouses. The complete terms are in the offering plan available from sponsor. File No. CD25-0305
Features & Amenities
Interior Features
Exterior Features
Building Amenities
Appliances
Building Information
Financial Details
About Williamsburg
View All Williamsburg ListingsWilliamsburg is the global face of Brooklyn's cultural and residential renaissance. Defined by its stunning waterfront parks and the iconic L-train connection to Manhattan, the neighborhood offers a high-energy lifestyle. The real estate market is dominated by sleek, glass-walled luxury condominiums along the East River, alongside historic warehouse conversions and boutique new developments that cater to a wide range of buyers and renters.
Williamsburg Live Market Data
View NeighborhoodActive Listings
132
Median Asking Price
$1.95M
Median $/Sqft
$1,655
Avg Days on Market
N/A
New This Week
11
Price Reduced
14%
Sold (30 Days)
40
Median Sale Price
$1.75M
Live data from RLS at REBNY • Updated 9/8/26, 1:07 PM EST
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Location
455 KEAP Street #PH, Williamsburg, Kings County
Floor Plans
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 $1,102 per month. Confirm the exact amount with Milton Coste before making an offer.
This property has 4 bedrooms and 2 full bathrooms and 1 half bathroom.
The listed interior living area is 2,396 square feet. Verify dimensions independently during due diligence.
According to MLS records, the building was constructed in 2026, making it approximately 0 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 Milton Coste for weight limits or breed restrictions.
At the current list price of $3,100,000 for 2,396 sq ft, the asking price per square foot is approximately $1,294. 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 milton@miltoncoste.com. 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 - Raquel Lomonico
Listing Contact: (561) 568-0297
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 9/8/2026 at 5:07 PM UTC
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Williamsburg Market Update
40 sales last 30 days · $1.95M median · 3.3 months supply
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Quick Facts
Monthly Costs Estimate
$620,000
Source: Freddie Mac PMMS
Est. Monthly Payment
$0
Estimates only. Consult a lender for exact figures.
Mansion tax applies at this price point
New York State charges the buyer a mansion tax on residential purchases at $1,000,000 or more. At this asking price the tier is $3M to $4,999,999 at 1.50%, applied to the whole purchase price. It is due in cash at closing and cannot be financed.
Estimated mansion tax at asking
$46,500
Estimate based on the asking price. Confirm your own obligation with your real estate attorney.
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