For Sale · Listing by Compass
100 Riverside Boulevard #21A
Upper West Side, Manhattan
$2,000,000
100 Riverside Boulevard #21A
MLS® #RLS20115924
Listing by Compass
Open House Scheduled
Sunday, September 20 • 1:00 PM – 2:00 PM
REBNY 2025: signed Buyer Representation Agreement required before any showing.
- 2
- Bedrooms
- 2
- Baths
- 1,135
- Sq. Ft.
- 2006
- Year Built
Quick Summary
Property Highlights
- Parking: Private garage
Property Details
Listing History
| Event | Date | Price | Change |
|---|---|---|---|
| Listed | Sep 17, 2026 | $2,000,000 | - |
| Currently | Sep 17, 2026 | $2,000,000 | - |
Description
NE-facing corner 2BR/2BA with an extraordinary private wrap terrace—716 sq ft—outfitted with a brand-new Jacuzzi, landscaping, dining and lounge zones. Combined with 1,156 sq ft of refined interiors, you get 1,872 sq ft of seamless living and entertaining high on the 21st floor. Only four homes on the floor ensure exceptional privacy. An elegant foyer leads to a window-wrapped living room and chef’s kitchen with Sub-Zero and Miele appliances. The serene east-facing primary suite features a luxe Waterworks bath with separate tub and shower. A spacious second bedroom overlooks the terrace—ideal as a guest room, office, or nursery. Highlights include Brazilian rosewood floors, high ceilings, abundant closets, in-unit washer/dryer, central AC/heat, two deeded storage rooms, and three bike spots. The Avery is a white-glove, full-service condominium with 24/7 doorman, concierge, fitness center with yoga room, screening and billiards rooms, resident lounge/library with Wi-Fi, children’s playroom, garden, and on-site garage with direct elevator access—all moments from Lincoln Center, Riverside Park, Central Park, and premier shopping and dining.
Features & Amenities
Interior 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
472
Median Asking Price
$1.33M
Median $/Sqft
$1,438
Avg Days on Market
N/A
New This Week
64
Price Reduced
20%
Sold (30 Days)
73
Median Sale Price
$1.45M
Live data from RLS at REBNY • Updated 9/17/26, 6:35 PM EST
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Location
100 Riverside Boulevard #21A, Upper West Side, New York County
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 $1,952.28 per month. Confirm the exact amount with Milton Coste before making an offer.
The current listed annual property tax is $35,688.84, or roughly $2,974 per month. Verify the current assessment with your attorney before closing.
This property has 2 bedrooms and 2 full bathrooms.
The listed interior living area is 1,135 square feet. Verify dimensions independently during due diligence.
According to MLS records, the building was constructed in 2006, making it approximately 20 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 $2,000,000 for 1,135 sq ft, the asking price per square foot is approximately $1,762. 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 - Neil Zaken
Listing Contact: (516) 457-7743
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 9/17/2026 at 10:35 PM UTC
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Upper West Side Market Update
73 sales last 30 days · $1.33M median · 6.5 months supply
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Quick Facts
Monthly Costs Estimate
$400,000
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 $2M to $2,999,999 at 1.25%, applied to the whole purchase price. It is due in cash at closing and cannot be financed.
Estimated mansion tax at asking
$25,000
Estimate based on the asking price. Confirm your own obligation with your real estate attorney.
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