--- title: "829 PARK Avenue #10B, New York City, NY 10021" description: "829 PARK Avenue #10B, New York City, NY 10021 — Lenox Hill, New York City, NY. Last Sold Price $2,800,000. Sold on 8/4/2026. 3 bed, 3 bath" url: "https://realestaterebatesnewyork.com/buy/newyorkcity/manhattan/10021/829-park-avenue-b-10B-ny-10021" source: "Real Estate Rebate Team" status: "Closed" --- # 829 PARK Avenue #10B, New York City, NY 10021 Lenox Hill, New York City, NY Courtesy of Brown Harris Stevens Residential Sales LLC ## At a Glance - **Last Sold Price**: $2,800,000 - **Status**: Sold on 8/4/2026 - **Beds**: 3 - **Baths**: 3 - **Common Charges**: $8,434 / mo - **Brokerage Fee**: Share Eligible This listing was successfully closed and is no longer active on the market. [Planning to sell? Contact Régis Roumila](https://realestaterebatesnewyork.com/contact) ## Photos (10) ![829 PARK Avenue #10B, New York City, NY 10021 — photo 1 of 10](https://realestaterebatesnewyork-bucket.nyc3.cdn.digitaloceanspaces.com/0c45a300-385e-4b3a-8ad0-937d4b2720f4.jpg) ![829 PARK Avenue #10B, New York City, NY 10021 — photo 2 of 10](https://realestaterebatesnewyork-bucket.nyc3.cdn.digitaloceanspaces.com/662db784-eaf3-411e-a792-458b61670f40.jpg) ![829 PARK Avenue #10B, New York City, NY 10021 — photo 3 of 10](https://realestaterebatesnewyork-bucket.nyc3.cdn.digitaloceanspaces.com/6edb95c6-b004-4876-ab89-4f2d107250ff.jpg) ![829 PARK Avenue #10B, New York City, NY 10021 — photo 4 of 10](https://realestaterebatesnewyork-bucket.nyc3.cdn.digitaloceanspaces.com/3f6a96e3-6057-41b6-a1bf-b987a5dce91e.jpg) ![829 PARK Avenue #10B, New York City, NY 10021 — photo 5 of 10](https://realestaterebatesnewyork-bucket.nyc3.cdn.digitaloceanspaces.com/d77db6e2-6e87-4376-bc09-685ccf352199.jpg) ![829 PARK Avenue #10B, New York City, NY 10021 — photo 6 of 10](https://realestaterebatesnewyork-bucket.nyc3.cdn.digitaloceanspaces.com/17f6bd89-749d-4f9e-9ba5-81f305050ae1.jpg) ![829 PARK Avenue #10B, New York City, NY 10021 — photo 7 of 10](https://realestaterebatesnewyork-bucket.nyc3.cdn.digitaloceanspaces.com/82db5103-6f8c-4839-bde0-38e76e0b193a.jpg) ![829 PARK Avenue #10B, New York City, NY 10021 — photo 8 of 10](https://realestaterebatesnewyork-bucket.nyc3.cdn.digitaloceanspaces.com/58a3366b-3267-4e7e-b62d-61730f65f072.jpg) ![829 PARK Avenue #10B, New York City, NY 10021 — photo 9 of 10](https://realestaterebatesnewyork-bucket.nyc3.cdn.digitaloceanspaces.com/a5664b70-6f4d-4885-bc4f-33f4272ef178.jpg) ![829 PARK Avenue #10B, New York City, NY 10021 — photo 10 of 10](https://realestaterebatesnewyork-bucket.nyc3.cdn.digitaloceanspaces.com/864e0322-293d-4544-af18-ce56bfcc50d4.jpg) ## Property Overview High above Park Avenue, featuring soaring ceilings, views of the tree-lined avenue and the iconic Carlyle Hotel through expansive living room windows, and offering three bedrooms (flex four), a private landing, and three bathrooms, apartment 10B embodies the pre-war elegance and grace of a classic Upper East Side duplex. Apartment 10B also provides an open canvas for your imagination to create the home of your dreams. From the private elevator landing, an entry gallery leads to the sun-drenched corner great room measuring nearly 30 feet, which highlights a wood-burning fireplace, original hardwood floors, and six oversized windows directly over Park Avenue. The 10'3" ceilings-both downstairs and upstairs-lend to the airy, sunny atmosphere of an apartment that feels more like a private home than a Manhattan apartment. Off the grand living room is a dining area adjacent to a windowed kitchen. Three bedrooms and two full bathrooms are located upstairs. The corner primary bedroom faces west, with a large window overlooking Park Avenue. Options for new configurations include expanding the kitchen into a large eat-in chef's kitchen, adding a fourth bedroom and a home office in the former downstairs staff rooms, and combining two of the three upstairs bedrooms into a spacious primary suite with a dressing or lounging area. Built in 1909, this preeminent pre-war co-op features a full-time doorman, a stately high-ceilinged lobby with original marble floors, a live-in resident manager, private storage, and a state-of-the-art fitness center, completely renovated and upgraded in 2024. The building allows pets and 50% financing. There is a 2% flip tax. ## Property Details - **Property Type**: Duplex - **Beds**: 3 - **Baths**: 3 - **Rooms**: 8 - **Stories**: 12 - **Year Built**: 1909 - **Common Charges**: $8,434 / Monthly - **Listed On**: Apr 6, 2026 - **Days on Market**: 164 Days ### Residence Features - Building Other ## Estimated Monthly Payment **$22,592 / month**, assuming a 20% down payment ($560,000), a 6.5% interest rate and a 30-year term. The page's calculator lets a buyer change all three. - **Principal & Interest**: $14,158 - **Common Charges**: $8,434 Estimates only. Actual payments may vary. Confirm terms with your lender. ## Sales and market data ### Recent sales 10 apartments at 829 PARK Avenue have recorded sales since September 2021, the most recent for $2,800,000 in August 2026. Prices are the figures recorded with the City, not asking prices. | Unit | Beds | Sq Ft | Sold Price | $/ft² | Sold | Source | | --- | --- | --- | --- | --- | --- | --- | | 10B (Duplex) | 3 | — | $2,800,000 | — | August 4, 2026 | MLS | | [2D/3D](https://realestaterebatesnewyork.com/buy/newyorkcity/manhattan/10021/829-park-avenue-d3d-2D3D-ny-10021) (Apartment) | 5 | 2,800 | $3,100,000 | $1,107/ft² | July 13, 2026 | MLS | | 7D (Apartment) | 2 | — | $2,200,000 | — | June 25, 2026 | MLS | | 8A (Apartment) | 3 | — | $3,750,000 | — | April 16, 2026 | City record · MLS | | 9C (Duplex) | 3 | — | $3,900,000 | — | February 11, 2026 | City record · MLS | | 7C (Duplex) | 3 | — | $3,025,000 | — | February 11, 2026 | City record · MLS | | 11B (Duplex) | 3 | — | $2,650,000 | — | January 8, 2025 | City record · MLS | | 9B (Apartment) | 3 | — | $3,500,000 | — | October 2, 2024 | City record · MLS | | 2A (Apartment) | 3 | — | $2,250,000 | — | July 10, 2023 | City record · MLS | | 4A (Apartment) | 3 | — | $2,812,500 | — | September 7, 2022 | City record · MLS | Every row is a recorded transaction, including ancillary spaces such as storage and staff rooms where they were sold separately. Those are excluded from the benchmark below. ### How this price compares - **Last sold price**: $2,800,000 - **Median sold price**: $3,025,000 - **Difference**: -$225,000 (-7.4%) - **Comparable sales**: 7 - **Sales from**: September 2022 – April 2026 - **Middle half of those sales**: $2,731,250 – $3,625,000 Based on three-bedroom sales at 829 PARK Avenue. Square footage is recorded for only 0 of these 7 sales (0%), so no price per square foot is shown for this group. Co-op sales rarely carry a floor area, and a figure drawn from a handful of them would not describe the rest. ### How these sales were negotiated - **Sale-to-list price**: 93.8% (7 sales) - **Sold below asking**: 71% (7 sales) - **Typical time to find a buyer**: 19 days (5 sales) - **Typical time to close**: 114 days (6 sales) Based on three-bedroom sales at 829 PARK Avenue with the required listing and closing data. Sample sizes vary by metric. These are two separate periods measured on different clocks — time to find a buyer, and time from agreed deal to closing. They are medians of different sets of sales and do not add together into a single "days on market" figure. ### Price trend Median sale price, co-op three-bedroom sales in Lenox Hill | Year | Median sold price | Sales | | --- | --- | --- | | 2016 | $2,397,500 | 12 | | 2017 | $2,500,000 | 59 | | 2018 | $2,572,500 | 54 | | 2019 | $2,282,119 | 80 | | 2020 | $2,167,500 | 38 | | 2021 | $2,202,500 | 96 | | 2022 | $2,475,000 | 108 | | 2023 | $2,250,000 | 90 | | 2024 | $2,460,000 | 72 | | 2025 | $2,550,000 | 90 | | 2026 YTD | $2,673,000 | 55 | Based on recorded co-op three-bedroom sales in Lenox Hill. 2026 is year-to-date. Sales data through August 2026. Sale prices are the consideration recorded with the City in ACRIS, and each sale is dated by the day the City recorded it. A closing date reported to the MLS typically falls one to two weeks earlier. Recorded sales describe what has already happened and are not an appraisal, a valuation, or an estimate of what this home will sell for. [See every recorded sale at 829 PARK Avenue](https://realestaterebatesnewyork.com/buildings/new-york-city/manhattan/829-park-avenue) ## Price and Property History for 829 PARK Avenue, Unit 10B Review the recorded listing activity for 829 PARK Avenue, Unit 10B, including asking-price changes and prior market dates. - **Latest price change**: Reduced by $50,000, or 1.8%, on August 4, 2026 - **Originally listed**: April 6, 2026 at $2,850,000 - **Last sold**: $2,800,000 on August 4, 2026 | Date | Price | Listing event | | --- | --- | --- | | August 4, 2026 | $2,800,000 | Sold | | August 4, 2026 | $2,800,000 | Asking price reduced by $50,000, or 1.8% | | April 29, 2026 | $2,850,000 | Entered contract | | April 6, 2026 | $2,850,000 | Listed for sale by Brown Harris Stevens Residential Sales LLC | ## Property Taxes This apartment is part of a co-op that is taxed as one lot shared across 41 apartments. The corporation’s 2026 property tax bill was $1,754,425 for the whole building. Shareholders cover it through their monthly maintenance rather than a separate bill for this unit. [See the full property tax history for 829 PARK Avenue](https://realestaterebatesnewyork.com/buildings/new-york-city/manhattan/829-park-avenue) [How we source and calculate NYC property tax data](https://realestaterebatesnewyork.com/nyc-property-tax-data-methodology) ## About The Building ### 829 PARK Avenue Lenox Hill · Stock Cooperative 829 PARK Avenue, New York, NY 10021 A building in Lenox Hill, currently featuring 1 active listing. - **Year Built**: 1909 - **Active Units**: 1 - **Floors**: 12 [View the building page](https://realestaterebatesnewyork.com/buildings/new-york-city/manhattan/829-park-avenue) ### Available Residences — For Sale (3) | Unit | Beds | Baths | Size | Price / Ft² | Price | Listing Office | Listed Date | Days on Market | | --- | --- | --- | --- | --- | --- | --- | --- | --- | | [1C](https://realestaterebatesnewyork.com/buy/newyorkcity/manhattan/10021/829-park-avenue-1c-ny-10021) | 4 | 3 | — | — | $1,750,000 | Douglas Elliman Real Estate | Sep 8, 2026 | 9 days | | [6/7B](https://realestaterebatesnewyork.com/buy/newyorkcity/manhattan/10021/829-park-avenue-67b-ny-10021) | 3 | 3 | — | — | $2,750,000 (-6.8%) — In contract | Douglas Elliman Real Estate | Sep 15, 2025 | 367 days | | [8B](https://realestaterebatesnewyork.com/buy/newyorkcity/manhattan/10021/829-park-avenue-8b-ny-10021) | 3 | 3 | — | — | $2,950,000 — In contract | Douglas Elliman Real Estate | Jul 29, 2026 | 50 days | ### Recently Sold (2) | Unit | Beds | Baths | Size | Price / Ft² | Sold Price | Listing Office | Listed Date | Sold Date | | --- | --- | --- | --- | --- | --- | --- | --- | --- | | [10B](https://realestaterebatesnewyork.com/buy/newyorkcity/manhattan/10021/829-park-avenue-b-10B-ny-10021) | 3 | 3 | — | — | $2,800,000 | Brown Harris Stevens Residential Sales LLC | Apr 6, 2026 | Aug 4, 2026 | | [2D/3D](https://realestaterebatesnewyork.com/buy/newyorkcity/manhattan/10021/829-park-avenue-d3d-2D3D-ny-10021) | 5 | 4 | 2,800 sqft | $1,107 | $3,100,000 | Compass | Sep 13, 2025 | Jul 13, 2026 | ## Lenox Hill Overview of Lenox Hill [Explore Lenox Hill](https://realestaterebatesnewyork.com/neighborhoods/new-york-city/manhattan/lenox-hill) · [All Neighborhoods](https://realestaterebatesnewyork.com/neighborhoods) ### Nearby Lenox Hill - [Inwood real estate for sale](https://realestaterebatesnewyork.com/neighborhoods/new-york-city/manhattan/inwood) ## Related Links - [829 PARK Avenue — building page](https://realestaterebatesnewyork.com/buildings/new-york-city/manhattan/829-park-avenue) - [Lenox Hill neighborhood guide](https://realestaterebatesnewyork.com/neighborhoods/new-york-city/manhattan/lenox-hill) - [Estimate your Buyer Commission Share and closing costs](https://realestaterebatesnewyork.com/calculators/buyer-closing-cost-calculator) - [Contact Régis Roumila](https://realestaterebatesnewyork.com/contact) --- > RLS IDX Data display by Real Estate Rebate Team. 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 The Real Estate Board of New York, Inc., All rights reserved. IDX information is provided exclusively for consumers’ personal, non-commercial use and it may not be used for any purpose other than to identify prospective properties consumers may be interested in purchasing. > All information furnished regarding property for sale, rental or financing is from sources deemed reliable, but no warranty or representation is made as to the accuracy thereof and same is submitted subject to errors, omissions, change of price, rental or other conditions, prior sale, lease or financing or withdrawal without notice. All dimensions are approximate. For exact dimensions, you must hire your own architect or engineer and the number of bedrooms listed is for informational purposes and is not a legal conclusion. Please consult with your own architect or engineer for exact dimensions and legal specifications.