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425 East 78th Street 1BNew York, NY 10075

For Sale

$475,000

Smart Buyer Rebate - Ask

Why rent when you can begin your homeownership journey right here? Welcome to this truly distinctive duplex residence, offering an uncommon two-level layout in an intimate prewar cooperative on the Upper East Side. Combining the convenience of multi-level living with the amenities of an elevator building, this move-in ready home enjoys a coveted first-floor position, allowing for effortless access without the need to ride an elevator, while still maintaining the option to do so. Inside, warm parquet floors run throughout the home, while the updated kitchen allows for both everyday living and entertaining. Rich cherry cabinetry is paired with polished black granite countertops, a breakfast bar for casual dining, an undermount stainless steel sink, and a full suite of newly upgraded appliances, including a dishwasher and microwave. The apartment is vacant and ready for its next owner to move right in. The residence features a spacious bedroom with custom built-in shelving and a ceiling fan, while the adjacent bathroom is clad in Italian marble and a new vanity provides additional storage. Generous closets with built-in organization, through-wall air conditioning, and elevator access from both levels add to the home's exceptional functionality. Built in 1910, this intimate, award-winning cooperative consists of just 34 residences and was created through the thoughtful merging of two historic brownstones. Residents enjoy a live-in superintendent, elevator, laundry room with brand new machines, and a beautifully landscaped private garden. Located in the heart of the Upper East Side, you'll be moments from Central Park, Carl Schurz Park, John Jay Park, renowned museums, neighborhood cafés, restaurants, specialty markets, and convenient transportation. The building permits pets up to 25 pounds. Subletting is permitted with board approval after two years of owner occupancy, with a minimum one-year lease term and a maximum of three out of every five years. Co-purchasing, pieds-à-terre, parental purchasing, gifting, and guarantors are reviewed by the board on a case-by-case basis. There is an ongoing assessment of $72.60/month through May 2028 for completed Local Law 11 work.

Listed by Lukas Alexander Hoback

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The Agency Brokerage

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(303) 304-6389

Listed by Ashlie Roberson

·

The Agency Brokerage

Last updated July 31, 2026

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Source: REBNY #RLS20106725

RLS Data display by Prevu Real Estate LLC

Listing Facts

  • TypeCo-op
  • NeighborhoodUpper East Side
  • Bedrooms1
  • Bathrooms1
  • Days on PrevuNew Today
  • HOA/Maint. Fees$1,317/month

Amenities

  • Dishwasher
  • Private Outdoor Space

Location

Mortgage Calculator

Listing History

07/31/2026
Listed by The Agency Brokerage
$475,000

Estimated Closing Costs

Attorney Fees
$4,000
Bank Attorney
$1,500
Other Closing Costs
$4,000
Total
$9,500

Estimated closing costs are based on the list price of $475,000 and a 20% downpayment. These estimates are for indicative purposes only. Actual closing costs may vary for each transaction. See the Closing Costs Calculator for calculations specific to your situation.

Property Details for 425 East 78th Street 1B

Association

Amenities

  • Pets Allowed: Building Yes, No

Fees

  • Association Fee: $1,317.00 Monthly

Financial

  • Flip Tax Remarks: ASK EXCL BROKER

Exterior

Construction

  • Stories Total: 7
  • Structure Type: High Rise
  • Year Built: 1910
  • Building Name: Sovereign
  • Entry Level: 1

Features

  • Building Features: Elevator(s)

Financial

Taxes

  • Parcel Number: 1473-0016-00425-000-000001B

Interior

Features

  • Appliances: Dishwasher

Measurements

  • Living Area Units: SquareFeet

Rooms

  • Bathrooms Full: 1
  • Bathrooms Total Integer: 1
  • Bedrooms Total: 1
  • Rooms Total: 3

Other

Location

  • City Region: Manhattan
  • Subdivision Name: Lenox Hill
  • Tax Block: 01473
  • Tax Lot: 0016

Frequently Asked Questions

How many bedrooms and bathrooms does this co-op have?

There is 1 bedroom and 1 bathroom in this co-op at 425 East 78th Street 1B.

How does 425 East 78th Street 1B compare to other co-ops in Upper East Side?

This co-op is listed 83% below the average price for co-ops in Upper East Side and has been on the market for 137 less days than the typical home in this area.

What building or home owners association is the co-op part of?

This co-op is in the Sovereign building.

425 East 78th Street 1B is a 1-bedroom, 1-bath co-op for sale in New York NY 10075. Listed on Prevu for 0 days at $475,000. This property is located in Upper East Side. The median listing price for co-ops in this area is $1,849,000. The home offers private outdoor space and dishwasher. View other co-op listings in Manhattan.

RLS Data display by Prevu Real Estate LLC The Registrant acknowledges each other RLS Broker's ownership of, and the validity of their respective copyright in, the Exclusive Listings that are transmitted over the RLS. The information is being provided by RLS at REBNY Listing Service, Inc. Information deemed reliable but not guaranteed. Information is provided for consumers' personal, non-commercial use, and may not be used for any purpose other than the identification of potential properties for purchase. This information is not verified for authenticity or accuracy and is not guaranteed and may not reflect all real estate activity in the market. 2026 RLS at REBNY Listing Service, Inc. All rights reserved. Based on information from the Real Estate Board of New York and/or other sources. This information is not verified for authenticity or accuracy and is not guaranteed and may not reflect all real estate activity. 2026 The Real Estate Board of New York, Inc., All rights reserved.

Full MLS Disclaimers

Rebate estimate is indicative only and based on listing price and estimated buyer's agent commission paid by owner, if applicable. Final rebates are subject to Terms of Use and may vary due to final negotiated transaction terms.