Milton Coste

Licensed Real Estate Associate Broker

(917) 416-7433

SOLD FOR $3,300,000

· Closed April 21, 2026

310 E 86th Street #4B
3D Tour
Closed For Sale Condo

$3,300,000

$1,732 per sq ft

310 E 86th Street #4B

Upper East Side, Manhattan

MLS® #RLS20058914

RLS at REBNY

Listing by Compass

3

Bedrooms

2.5

Baths

1,905

Sq. Ft.

1915

Year Built

Quick Summary

Bedrooms 3
Bathrooms 3 full, 1 half
Living Area 1,905 sq ft
Year Built 1915
Ownership Condo
HOA/Common Charges $1,752/mo
Property Taxes $43,020/yr
Neighborhood Upper East Side
Floor 4 of 3

Property Highlights

  • Views: City
  • Exposure: North,South facing
  • Outdoor Space: Balcony

Property Details

Type Condo
Ownership Condominium
Total Rooms 5
Baths 2 Full, 1 Half
Floor 4 of 3
View City
Exposure North,South
Cooling Central Air
Pets Yes
Year Built 1915
Living Area 1,905 sq ft
Structure Type MixedUse
Flooring Hardwood
Furnished Unfurnished
Parcel # 1548-1112
Block/Lot 01548/1112

Listing History

Event Date Price Change
Listed Nov 7, 2025 $3,300,000 -
Price Reduced Apr 21, 2026 $3,375,000 +2.3%

Description

HEAVENLY AT THE HARPER: Upgraded, Big, Bright, Beautiful 3BR 2.5BTH w/Treeline Views, Custom Closets & Private Balcony

NEW FULL SERVICE CONDO BUILDING: Roof Deck, Grilling Station, Play Rooms, Art Room, Podcasting Studio, Music Studio, Game Room w/Screening Area & Billiards, Pet Spa & More

Here is a surprising new condo home on the treetops, with green, tree-top views from every single oversized window and its own private balcony. Light and quiet, this stretch-out, winsome North and South facer is a stellar standout on the treasured treeline of the new and beloved Harper.

Above ceilings rise nearly ten feet -- underfoot are wide-plank White Oak floors -- and everywhere you look is leafy, lively, light, and lovely. This upgraded vibrant abode -- in a supreme location -- has it all. With a lovable, verdant perch in its famously well-run, well-served, impressively amenitized building, here's the handsome, move-in ready home for which you've been looking -- bigger, better, balconied, and more beautiful than ever.

The sizable foyer hall is an ideal gallery -- welcoming you and guiding you to the big living/dining room. This is the comfortable, lovable heart of this home - a large entertaining space anchored by oversized picture windows onto the tree-line. Open to the eat-in chef's kitchen, this great room is built for a big stretch-out life.

The cook’s kitchen is a well planned culinary delight created by Poliform & ODA. With ample Taj Mahal quartzite countertops and custom lacquer cabinetry (with antique brass Waterworks hardware), and a top-tier suite of Miele appliances (including wine fridge), this gorgeous kitchen is fabulous and functional.

The graceful residential hall graciously separates the entertaining rooms from the bedroom suites. The expansive, king-sized primary suite also enjoys grand picture windows with leafy tree views, and boasts its own private tree-line balcony with leafy garden views. Here, sunrise coffees give way to starlight drinks -- all from your own, intimate al fresco perch.

There is an immense, designer-outfitted, primary walk-in closet with vanity space, and an overscaled, primary bath. Graced by Crema Luna limestone and Namibia white marble, the spa-like primary bath offers radiant heated floors, dual sinks, a soaking tub, a step-in shower, and Waterworks fixtures. This primary suite is a masterful retreat. Both large guest bedrooms are bright South-facers, flexibly fine and comfy with good built-out closets, pristine and peaceful, and are served by their own full limestone bath (with dual sinks and tub-shower).

This well-planned, sophisticated, luxe residence — with its lovely powder room, abundant, designer closets, en suite side-by-side washer and dryer, big solid-core doors, Valli & Valli hardware, and high-efficiency VRF central air/heating -- offers year-round comfort, magnificent space, and a forever lovable vibe.

Well designed by the award-winning firm ODA Architecture, The limestone clad Harper is one of the Upper East Side's newest, premier, full-service condominiums. A celebrated address, residents are well served by an attentive, round-the-clock staff and beloved resident manager. Famous for its top-tier amenities, Harper life is easy, fun and convenient. Residents enjoy two rooftop lounge spaces with glorious city views and a grilling station, a state-of-the-art gym, magnificent playroom, a creator's art room, a pet spa, a podcasting studio, music studio, central laundry, storage, and a game room with billiard table and screening area.

With a prime

Features & Amenities

Interior Features

Breakfast Bar Built In Features Double Vanity Entrance Foyer Eat In Kitchen High Ceilings Recessed Lighting Soaking Tub Walk In Closets Common On Floor In Unit See Remarks Flooring: Hardwood

Exterior Features

Balcony Building Roof Deck Private Outdoor Space Over60 Sqft Balcony

Building Amenities

Elevators

Appliances

Cooktop Dryer Dishwasher Freezer Gas Cooktop Refrigerator Stainless Steel Appliances Washer

Building Information

Building Data View Compliance & Permits
Total Units 63
Stories 3
Structure MixedUse

Financial Details

Common Charges $1,752/mo
RE Taxes $43,020/yr ($3,585/mo)
Sale Price $3,300,000
Previous Price $3,375,000

The Upper East Side remains the gold standard for classic New York elegance. Known for 'Museum Mile' and its low-traffic, tree-lined streets, the neighborhood offers a refined lifestyle away from the midtown bustle. While famous for its historic cooperatives, the area has seen a recent surge in ultra-luxury new construction condos, particularly along the Second Avenue Subway corridor, making it a top choice for both traditionalists and modern buyers.

Upper East Side Live Market Data

View Neighborhood

Active Listings

339

Median Asking Price

$1.57M

Median $/Sqft

$1,563

Avg Days on Market

N/A

New This Week

27

Price Reduced

27%

Sold (30 Days)

32

Median Sale Price

$1.52M

Live data from RLS at REBNY • Updated 4/26/26, 12:48 AM EST

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Location

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310 E 86th Street #4B, Upper East Side, New York County

Virtual Tour

Floor Plans

Floor Plan

Building Information

Official NYC property records for this building

1925
Year Built
101 years old
3
Floors
4
Residential Units
R6B
Zoning District
Primarily Residential Mixed Use

Tax & Assessment

Assessed Value: $453,150
Land Value: $121,950
Exemptions: $0

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

Lot Area: 1,600 SF
Building Area: 4,200 SF
Built FAR: 2.63
Allowed FAR: 2

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 $1,752 per month. Confirm the exact amount with the listing broker before making an offer.

The current listed annual property tax is $43,020, or roughly $3,585 per month. Verify the current assessment with your attorney before closing.

This property has 3 bedrooms and 2 full bathrooms and 1 half bathroom.

The listed interior living area is 1,905 square feet. Verify dimensions independently during due diligence.

According to MLS records, the building was constructed in 1915, making it approximately 111 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.

Pet policy requires confirmation with the listing broker.

At the current list price of $3,300,000 for 1,905 sq ft, the asking price per square foot is approximately $1,732. 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 mcoste@kwnyc.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: RLS20058914
First Listed: 11/7/2025
On Market: 11/7/2025
Price Changed: 4/21/2026
Closed: 4/21/2026
Contract Date: 10/29/2025

Listing Courtesy of Compass - Brian K Lewis

Listing Contact: (646) 228-7241

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 4/26/2026 at 4:48 AM UTC

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