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$4,450,000
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Property Description
Thoughtfully reimagined with a modern sensibility, Residence 9C at 170 East 77th Street is a turnkey four-bedroom, four-bathroom home defined by elevated design and exceptional craftsmanship. A gracious entry leads into the dramatic step-down living and dining room, an expansive entertaining space framed by oversized windows that flood the home with natural light. Custom built-ins and an 80-inch Dynasty linear electric fireplace anchor the room, while European 10-inch oak plank flooring and electric privacy shades add warmth. The beautifully reimagined kitchen is both striking and highly functional, outfitted with floor-to-ceiling Scavolini cabinetry, a durable Dekton countertop with integrated sink, and a best-in-class suite of appliances including Thermador refrigeration, induction cooktop, wine storage, and Gaggenau oven, microwave, and built-in espresso machine. Privately positioned, the sprawling corner primary suite offers a serene retreat, complemented by custom room-darkening Hunter Douglas electric shades and dedicated Mitsubishi climate control. Spa-inspired baths are finished with honed natural stone slabs, Scavolini vanities, premium Gessi fixtures, concealed wall-hung toilets, upgraded shower systems, and radiant heated flooring in the primary bath, bringing a five-star hotel sensibility to everyday living. Set within Diamond House, a full-service condominium in the heart of Lenox Hill, residents enjoy a 24-hour doorman, fitness center, roof deck, bike room, and a pet-friendly lifestyle. Perfectly positioned moments from Madison Avenue shopping, acclaimed dining, Central Park, and multiple transportation options, the residence offers exceptional convenience in one of the Upper East Side's most sought-after neighborhoods.
Full Property Details
Full Property Details for 170 E 77th St #9C
General
- Price: $4,450,000
- HOA FEE: $3,748/month
- Taxes: $39,996
- Status: Active
- Type: Apartment
- Source: REBNY
- MLS ID: RLS20091246
- Updated: 10/25/2026
- Added to Site: 12 day(s) ago
Interior
- Number of Rooms: 8
- Interior Features: Entrance Foyer, Soaking Tub
- Appliances: Dishwasher, Wine Cooler
- Furnishings: Unfurnished
- Flooring: Hardwood
Rooms
Bathrooms
- Total Bathrooms: 4
- Full Bathrooms: 4
Bedrooms
- Total Bedrooms: 4
Other Rooms
- Laundry: Common On Floor, Common Area, In Unit
Exterior
- Exterior Features: Building Roof Deck
Location
- County: New York
- Subdivision: Lenox Hill
- Building Name: The Diamond House
Heating & Cooling
- Central air: Yes
- Air Conditioning: Yes
- Cooling Type: Central Air
- Heating Type: Central
Structural Information
- Structure Type: High Rise
- Stories/Levels: 10
- Square Feet: 2,500
- Living Area: 2,500 Sq. Ft.
- Year Built: 1942
- Other Struct. Feat.: Bike Storage, Concierge, Elevator(s), Fitness Center
Lot Features
- Lot Size: 12771.25
- Lot Dimensions: 125.000000 x 102.170000
Financial Considerations
- Association Fee: $3,748
- Assoc Fee Freq.: Monthly
- Tax Amount: $39,996
Disclosures and Reports
- Special Conditions: Standard
- Property ID: 1411-1144
- Block: 1411
- Lot Number: 1144
Listing Courtesy of Compass
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Schools
Schools serving 170 E 77th St #9C
School District:New York City Geographic School District 02
| Name | Grades | Distance |
|---|---|---|
P.S. 158 Baylard Taylor 1458 York Avenue, New York, NY 10075 | K-6 | 0.5 mi |
Jhs 167 Robert F Wagner 220 East 76th Street, New York, NY 10021 | 6-8 | 0.1 mi |
Disclaimer:
School attendance boundaries provided by ATTOM Data Solutions and are for reference only. Contact the school directly to verify enrollment eligibility.
Price & Sales History for 170 E 77th St #9C
Date
Details
Price
Change
Source
10/16/2026
Listed
$4,450,000
32.84%
MLS
9/29/2023
Sold
$3,350,000
—
Public Record
Disclaimer: Historical sales information is derived from public records provided by the county offices. Information is not guaranteed and should be independently verified.
Tax History
Tax History for 170 E 77th St #9C
Year
Property Taxes
Change
Tax Assessment
Change
2025
$45,286
—
$363,526
—
2025
$45,286
7%
$362,284
7%
2024
$42,177
-3%
$337,360
-3%
2023
$43,380
5%
$346,983
-3%
2022
$41,360
—
$358,261
4%
2021
$41,172
23%
$344,788
-10%
2020
$33,392
4%
$381,890
2%
2019
$32,124
-14%
$373,305
4%
2018
$37,568
4%
$360,260
2%
2017
$36,258
—
$353,932
6%
2016
$36,434
7%
$334,688
5%
2016
$33,902
11%
$318,501
17%
2014
$30,617
-1%
$271,327
10%
2013
$30,880
—
$247,041
—
Disclaimer: Historical tax information is derived from public records provided by the county offices. Information is not guaranteed and should be independently verified.
Estimate the Cost
Estimate the Cost for 170 E 77th St #9C
170 E 77th Street #9C, New York City, NY 10075 (MLS# RLS20091246) is a Apartment property with 4 bedrooms and 4 full bathrooms. 170 E 77th Street #9C is currently listed for $4,450,000 and was received on October 16, 2026. Want to learn more about 170 E 77th Street #9C? Do you have questions about finding other Apartment real estate for sale in New York City? You can browse all New York City real estate or contact a Coldwell Banker agent to request more information.

