For Sale · Listing by Compass
505 W End Avenue #12C
Upper West Side, Manhattan
$1,800,000
505 W End Avenue #12C
MLS® #RLS20100556
Listing by Compass
- 3
- Bedrooms
- 2
- Baths
- N/A
- Sq. Ft.
- 1922
- Year Built
Quick Summary
Property Highlights
- Views: City
- Character: Pre-war building (1922)
Property Details
Listing History
| Event | Date | Price | Change |
|---|---|---|---|
| Listed | Oct 1, 2026 | $1,800,000 | - |
| Currently | Oct 2, 2026 | $1,800,000 | - |
Description
Welcome to Apartment 12C at 505 West End Avenue, a gracious Classic Six in a well-established boutique cooperative on the coveted corner of West End Avenue and 84th Street. The sought-after C line is known for its exceptional proportions and flexible layout. A welcoming entry foyer seamlessly blends into the formal dining room and spacious living room. Designed for today's evolving lifestyles, the Classic Six floor plan offers exceptional renovation potential. Whether your vision includes a third bedroom, an expanded chef's kitchen, an additional bathroom, or reimagined entertaining spaces, the flexible layout provides endless possibilities to create a home tailored to your needs. Built circa 1922, the home retains timeless prewar character with soaring ceilings, original oak hardwood floors, classic moldings, and generously proportioned rooms. The apartment features two windowed full bathrooms, including a hall bath with a tub and a second bath with a shower adjoining the staff room, making it ideal as a guest suite, home office, or additional bedroom. The windowed kitchen offers tremendous potential for a custom renovation, providing the perfect opportunity to create your ideal chef's kitchen. Residents of 505 West End Avenue enjoy the convenience of a full-time doorman, live-in superintendent, fitness center, media room, laundry facilities, and a beautifully landscaped roof deck offering sweeping city, river, and skyline views. The cooperative is pet-friendly and permits in-unit washer/dryers and central air conditioning with board approval. Ideally situated moments from both Central Park and Riverside Park, the building is surrounded by the very best of the Upper West Side, including renowned restaurants, neighborhood boutiques, gourmet markets, and convenient transportation.
Features & Amenities
Interior Features
Exterior Features
Building Amenities
Appliances
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
533
Median Asking Price
$1.46M
Median $/Sqft
$1,559
Avg Days on Market
N/A
New This Week
20
Price Reduced
22%
Sold (30 Days)
75
Median Sale Price
$1.51M
Live data from RLS at REBNY • Updated 10/1/26, 9:49 PM EST
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Location
505 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 monthly maintenance are $4,041 per month. Confirm the exact amount with Milton Coste before making an offer.
The current listed annual property tax is $0, or roughly $0 per month. Verify the current assessment with your attorney before closing.
This property has 3 bedrooms and 2 full bathrooms.
According to MLS records, the building was constructed in 1922, making it approximately 104 years old.
This listing is a co-op (stock cooperative). Buyers purchase shares in a corporation rather than real property, and the board must approve all sales.
Pets are permitted at this property. Contact Milton Coste for weight limits or breed restrictions.
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 - Brian J Goldfarb
Listing Contact: (917) 309-5108
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 10/2/2026 at 1:49 AM UTC
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Sale history, taxes, violations and comps for this unit
Before you bid
Pre-Offer Report: 505 W End Avenue #12C
At $1,800,000, the listing leaves out what decides the offer: the recorded sale history, the tax and abatement picture, open building violations and permits, and the closed sales that set the price. Milton prepares the report from public records. Free, no obligation.
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Upper West Side Market Update
75 sales last 30 days · $1.46M median · 7.1 months supply
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Quick Facts
Monthly Costs Estimate
$360,000
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 $1M to $1,999,999 at 1.00%, applied to the whole purchase price. It is due in cash at closing and cannot be financed.
Estimated mansion tax at asking
$18,000
Estimate based on the asking price. Confirm your own obligation with your real estate attorney.
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