Milton Coste

Licensed Real Estate Associate Broker

(917) 416-7433
817 5th Avenue #7

For Sale · Listing by Sothebys International Realty

817 5th Avenue #7

Lenox Hill, Manhattan

$15,500,000

Interested in this property?
Active For Sale Condo

$15,500,000

$4,416 per sq ft

817 5th Avenue #7

Lenox Hill, Manhattan

MLS® #RLS20117040

RLS at REBNY

Listing by Sothebys International Realty

2
Bedrooms
2.5
Baths
3,510
Sq. Ft.
1925
Year Built

Quick Summary

Bedrooms 2
Bathrooms 0 full, 1 half
Living Area 3,510 sq ft
Lot Size 5,000 sq ft
Year Built 1925
Ownership Condo
HOA/Common Charges $9,042/mo
Property Taxes $59,244/yr
Neighborhood Lenox Hill
Floor 7 of 14

Property Highlights

  • Views: Park Greenbelt
  • Climate Control: Central Air
  • Character: Pre-war building (1925)

Property Details

Type Condo
Ownership Condominium
Total Rooms 10
Baths 2 Full, 1 Half
Floor 7 of 14
View Park Greenbelt
Cooling Central Air
Pets Yes, CatsOk, DogsOk
Year Built 1925
Living Area 3,510 sq ft
Structure Type HighRise
Flooring Hardwood
Furnished Unfurnished
Lot Size 5,000 sq ft
Block/Lot 00001/0001

Listing History

Event Date Price Change
Listed Sep 23, 2026 $15,500,000 -
Currently Sep 23, 2026 $15,500,000 -

Description

Occupying the entire seventh floor of 817 Fifth Avenue, this beautifully renovated 12-room residence, originally configured with four bedrooms, has been reimagined as an expansive two-bedroom, two-and-a-half-bath home combining grand proportions, exceptional craftsmanship, and magnificent Central Park views. A private elevator landing opens into a striking onyx-floored foyer, immediately establishing the residence's quality. Beyond is an extraordinary 25-by-28-foot double living room with oversized picture windows framing direct views of Central Park and the Manhattan skyline. Rich wood paneling, extensive custom millwork, and a ventless fireplace with a sculptural stone surround create an elegant setting for both large-scale entertaining and comfortable everyday living. Adjacent to the living room is a handsome media room with custom cabinetry and integrated audiovisual equipment. The formal dining room is conveniently positioned near the windowed kitchen, which features abundant custom wood cabinetry, granite countertops and floors, and generous storage. A powder room is discreetly located off the main gallery. The private quarters are anchored by an impressive corner primary suite. Oversized windows capture beautiful Central Park and open northern views, while refined fabric wall coverings and custom carpeting create a serene atmosphere. The suite includes an extensive dressing area, a 12-foot walk-in closet, and a luxurious primary bathroom finished in richly patterned onyx, a large soaking tub, and a separate glass-enclosed shower. The generously proportioned second bedroom offers open eastern city views, excellent closet space, and a newly renovated en-suite marble bathroom with a shower. Additional features include a substantial laundry and utility room, extensive storage, central air conditioning, and a sophisticated recessed lighting plan. Ceiling heights are just under 10 feet, with dropped sections thoughtfully designed to accommodate the integrated lighting and mechanical systems. Completed to an exceptionally high standard, this distinguished full-floor residence offers grand entertaining spaces and mesmerizing Central Park views in one of Fifth Avenue’s most desirable locations. Cash purchases only; financing is not permitted. There are no summer work restrictions. Purchases in trust are considered on a case-by-case basis, subject to Board approval. A storage room in the basement is included.

Features & Amenities

Interior Features

Common On Floor Common Area Flooring: Hardwood

Building Amenities

Concierge Elevators Fitness Center

Appliances

Dryer Washer

Building Information

Building Data View Compliance & Permits
Total Units 16
Stories 14
Structure HighRise

Financial Details

Common Charges $9,042/mo
RE Taxes $59,244/yr ($4,937/mo)

Lenox Hill occupies a residential section of the Upper East Side, defined by proximity to Central Park, major medical institutions (Memorial Sloan Kettering, Weill Cornell, Lenox Hill Hospital), and the Madison Avenue retail corridor. Housing stock ranges from large pre-war cooperatives to modern condominiums with East River and skyline views.

Lenox Hill Live Market Data

View Neighborhood

Active Listings

623

Median Asking Price

$1.64M

Median $/Sqft

$1,587

Avg Days on Market

N/A

New This Week

50

Price Reduced

27%

Sold (30 Days)

82

Median Sale Price

$1.32M

Live data from RLS at REBNY • Updated 9/23/26, 6:44 PM EST

Similar Listings in Lenox Hill

View All

Location

Loading map...

817 5th Avenue #7, Lenox Hill, New York County

Floor Plans

Floor Plan 1

Building Information

Official NYC property records for this building

1925
Year Built
101 years old
14
Floors
16
Residential Units
R10
Zoning District
Condominiums Historic District: Upper East Side Historic District

Tax & Assessment

Assessed Value: $7,860,151
Land Value: $2,407,501
Exemptions: $966,570

Note: Individual unit taxes may differ. Verify current tax bills with NYC DOF.

Lot Area: 4,990 SF
Building Area: 50,250 SF
Built FAR: 10.07
Allowed FAR: 10

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

Frequently Asked Questions

Common questions about this property

The current listed common charges are $9,042 per month. Confirm the exact amount with Milton Coste before making an offer.

The current listed annual property tax is $59,244, or roughly $4,937 per month. Verify the current assessment with your attorney before closing.

This property has 2 bedrooms and 2 full bathrooms and 1 half bathroom.

The listed interior living area is 3,510 square feet. Verify dimensions independently during due diligence.

According to MLS records, the building was constructed in 1925, making it approximately 101 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 $15,500,000 for 3,510 sq ft, the asking price per square foot is approximately $4,416. 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) 416-7433
MLS® ID: RLS20117040
First Listed: 9/23/2026
On Market: 9/23/2026
Price Changed: 9/23/2026
Contract Date: 9/23/2026

Listing Courtesy of Sothebys International Realty - Maria Bazo

Listing Contact: (212) 606-7660

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 at REBNY

RLS Data display by Keller Williams NYC. Data last updated on 9/23/2026 at 10:44 PM UTC

See it in person

Lenox Hill Market Update

82 sales last 30 days · $1.64M median · 7.6 months supply

Read Full Report

New listings in this neighborhood

Quick Facts

Status Active Type Condo Neighborhood Lenox Hill Borough Manhattan
County New York
Floor 7 of 14
Year Built 1925
First Listed 9/23/2026
Living Area 3,510 sqft
Common Charges $9,042/mo
Annual Tax $59,244

Monthly Costs Estimate

Down Payment 20%

$3,100,000

Interest Rate Loading...

Source: Freddie Mac PMMS

Loan Term 30 years

Est. Monthly Payment

$0

Principal & Interest $0
PMI (under 20% down) $0
Common Charges $9,042
Est. Taxes $4,937
Total Monthly $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 $15M to $19,999,999 at 3.50%, applied to the whole purchase price. It is due in cash at closing and cannot be financed.

Estimated mansion tax at asking

$542,500

Run the numbers on a different offer price

Estimate based on the asking price. Confirm your own obligation with your real estate attorney.

Back to Search

Find more properties

Buying a Condo? Start Here

Co-op vs. Condo: Which Is Right for You?

Ownership structure, board approval, financing: the full comparison.

Read article

Condo Due Diligence Checklist

What to review before signing: financials, reserve fund, offering plan.

Read article

How to Read a Condo Offering Plan

Decode the offering plan before you commit to any new development.

Read article

NYC Mansion Tax: 2026 Guide

How the tiered mansion tax works for purchases over $1M.

Read article

Interested in this property?

Your info is secure and never shared.

Call Text Email