For Sale · Listing by Compass
378 W End Avenue #12C
Upper West Side, Manhattan
$8,750,000
378 W End Avenue #12C
MLS® #RLS20107060
Listing by Compass
- 4
- Bedrooms
- 4.5
- Baths
- 2,970
- Sq. Ft.
- 2021
- Year Built
Quick Summary
Property Highlights
- Views: City, River
- Exposure: East,North,South facing
- Climate Control: Central Air
Property Details
Listing History
| Event | Date | Price | Change |
|---|---|---|---|
| Listed | Sep 7, 2026 | $8,750,000 | - |
| Currently | Sep 7, 2026 | $8,750,000 | - |
Description
Perched high above the Upper West Side, Residence 12C at 378 West End Avenue is a beautifully proportioned home with nearly 12-foot ceilings, private outdoor space, gracious entertaining rooms and expansive southern light overlooking the landmarked Collegiate Church. A private elevator vestibule opens into a formal gallery, setting the tone for a residence that feels both elegant and welcoming from the moment of arrival. The great room is exceptionally wide and beautifully proportioned, offering impressive scale for both everyday living and entertaining, while oversized windows frame open southern exposures and beautiful natural light throughout the day. Thoughtfully reconfigured, the home is currently set up as an expansive three-bedroom plus den residence, with the original fourth bedroom opened to create a dramatic entertaining and living area. The original four-bedroom layout can easily be restored, and both floor plans have been included for reference. The open kitchen, custom designed by Christopher Peacock and outfitted with Wolf and Sub-Zero appliances, is thoughtfully configured to balance openness with separation, allowing for both casual living and more formal dining occasions. Extensive storage and generous workspace make it as functional as it is beautiful. The bedroom layout is ideally winged for privacy and flexibility, with all bedrooms featuring ensuite baths. A discreetly positioned powder room is tucked away off its own vestibule. The corner primary suite enjoys coveted north and east exposures along with a luxurious ensuite bath and abundant closet space. Additional features include central air conditioning, excellent storage throughout and two private storage units that transfer with the sale. The sellers would also consider selling their parking space separately. With only nine parking spaces in the building, this presents an exceptionally rare opportunity for purchasers seeking the convenience of on-site parking. Residents of 378 West End Avenue enjoy an extensive suite of amenities including a 75-foot lap pool, fitness center, basketball and squash courts, music practice and recording rooms, residents' lounge, reading room, children's play spaces, private garden, movie room and on-site garage access.
Features & Amenities
Interior Features
Exterior Features
Building Amenities
Building Information
Financial Details
About Upper West Side
View All Upper West Side ListingsThe Upper West Side (UWS) is celebrated for its cultural richness and architectural grandeur. Set between Central Park and Riverside Park, the neighborhood provides direct access to green space within the urban grid. Residents enjoy easy access to Lincoln Center, the American Museum of Natural History, and a popular culinary scene. The real estate landscape is famous for its historic brownstones and iconic 'white-glove' apartment buildings along Central Park West and Riverside Drive.
Upper West Side Live Market Data
View NeighborhoodActive Listings
325
Median Asking Price
$1.59M
Median $/Sqft
$1,688
Avg Days on Market
N/A
New This Week
19
Price Reduced
28%
Sold (30 Days)
85
Median Sale Price
$1.45M
Live data from RLS at REBNY • Updated 9/7/26, 4:26 PM EST
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Location
378 W End Avenue #12C, Upper West Side, New York 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 $4,290 per month. Confirm the exact amount with Milton Coste before making an offer.
The current listed annual property tax is $76,452, or roughly $6,371 per month. Verify the current assessment with your attorney before closing.
This property has 4 bedrooms and 4 full bathrooms and 1 half bathroom.
The listed interior living area is 2,970 square feet. Verify dimensions independently during due diligence.
According to MLS records, the building was constructed in 2021, making it approximately 5 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 $8,750,000 for 2,970 sq ft, the asking price per square foot is approximately $2,946. 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 Compass - Jennifer A Bonomi
Listing Contact: (917) 833-7659
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 9/7/2026 at 8:26 PM UTC
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Upper West Side Market Update
85 sales last 30 days · $1.59M median · 3.8 months supply
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Quick Facts
Monthly Costs Estimate
$1,750,000
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 $5M to $9,999,999 at 2.25%, applied to the whole purchase price. It is due in cash at closing and cannot be financed.
Estimated mansion tax at asking
$196,875
Estimate based on the asking price. Confirm your own obligation with your real estate attorney.
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