---
title: "521 Park Avenue #10A, New York City, NY 10065"
description: "521 Park Avenue #10A, New York City, NY 10065 — Lenox Hill, New York City, NY. Listing Price $1,650,000. In contract 3/25/2026. 1 bed, 2 bath, 1,000 sqft Illustrative Buyer Commission Share of $24,750 at closing, based on a 3% buyer-broker commission."
url: "https://realestaterebatesnewyork.com/buy/newyorkcity/manhattan/10065/521-park-avenue-10a-ny-10065"
source: "Real Estate Rebate Team"
status: "Pending"
---

# 521 Park Avenue #10A, New York City, NY 10065

Lenox Hill, New York City, NY

Courtesy of Compass

## At a Glance

- **Listing Price**: $1,650,000
- **Status**: In contract 3/25/2026
  In Contract/Lease Signed indicates an offer has been made and accepted by the seller/landlord, with the deal pending completion.
- **Beds**: 1
- **Total Baths**: 2
- **Sqft**: 1,000
- **Common Charges**: $2,619 / mo
- **Monthly Taxes**: $972 / mo
- **Price per Sqft**: $1,650
- **Brokerage Fee**: Share Eligible

## The Private Brokerage Advantage

As an independent luxury buyer representative, Régis shares 50% of the buyer-side commission he actually receives on your purchase. Eligible buyers receive that Buyer Commission Share directly at closing to offset closing costs, down payments, or renovations. The figures below are illustrative, based on a **3% buyer-broker commission**; your share follows the commission offered on the transaction.

- **Contract Purchase Price**: $1,650,000
- **Illustrative Buyer Commission Share**: -$24,750*
- **Illustrative Net Cost**: $1,625,250

*Illustrative Buyer Savings of $24,750 — 50% of a 3% buyer-broker commission, shared at closing.*

[Request a private tour](https://realestaterebatesnewyork.com/contact) · [Estimate your Buyer Commission Share](https://realestaterebatesnewyork.com/calculators/buyer-closing-cost-calculator)

## Photos (10)

![521 Park Avenue #10A, New York City, NY 10065 — photo 1 of 10](https://realestaterebatesnewyork-bucket.nyc3.cdn.digitaloceanspaces.com/b8dc7783-b3b9-42d7-aec5-bcdf76242099.jpg)
![521 Park Avenue #10A, New York City, NY 10065 — photo 2 of 10](https://realestaterebatesnewyork-bucket.nyc3.cdn.digitaloceanspaces.com/5b408d4e-86d4-40d4-aba2-96786babff78.jpg)
![521 Park Avenue #10A, New York City, NY 10065 — photo 3 of 10](https://realestaterebatesnewyork-bucket.nyc3.cdn.digitaloceanspaces.com/b42ce940-b5b5-463c-bae8-ec3822ad7705.jpg)
![521 Park Avenue #10A, New York City, NY 10065 — photo 4 of 10](https://realestaterebatesnewyork-bucket.nyc3.cdn.digitaloceanspaces.com/fee7c3fe-66e9-4e4b-93a0-3cfcbf66e142.jpg)
![521 Park Avenue #10A, New York City, NY 10065 — photo 5 of 10](https://realestaterebatesnewyork-bucket.nyc3.cdn.digitaloceanspaces.com/625b8bee-0f11-46e6-ad34-1e76c5c40f28.jpg)
![521 Park Avenue #10A, New York City, NY 10065 — photo 6 of 10](https://realestaterebatesnewyork-bucket.nyc3.cdn.digitaloceanspaces.com/8b46897c-52b9-49b6-b29a-8cfe029bb523.jpg)
![521 Park Avenue #10A, New York City, NY 10065 — photo 7 of 10](https://realestaterebatesnewyork-bucket.nyc3.cdn.digitaloceanspaces.com/7927f8d1-913f-440d-8e40-f40594a9cf9a.jpg)
![521 Park Avenue #10A, New York City, NY 10065 — photo 8 of 10](https://realestaterebatesnewyork-bucket.nyc3.cdn.digitaloceanspaces.com/e6d6f065-f842-42d7-aa07-e246a6c07c44.jpg)
![521 Park Avenue #10A, New York City, NY 10065 — photo 9 of 10](https://realestaterebatesnewyork-bucket.nyc3.cdn.digitaloceanspaces.com/2ef1f1e6-541f-472b-9c73-74794bcbbc7e.jpg)
![521 Park Avenue #10A, New York City, NY 10065 — photo 10 of 10](https://realestaterebatesnewyork-bucket.nyc3.cdn.digitaloceanspaces.com/e77fc30a-f883-4c7a-afdc-2b25543ef8cd.jpg)

## Property Overview

Loft-Like Prewar Condominium on Park Avenue

Rarely available, this sun-flooded 1-bedroom, 1.5-bath residence sits on a high floor of one of Park Avenue’s most distinguished prewar condominiums. Spanning approximately 1,000 sqft, the home is defined by its soaring 10’8” ceilings, oversized windows, and open city views that create a bright, airy, and loft-like atmosphere.

The gracious layout features a spacious living and dining area with excellent proportions, ideal for both entertaining and everyday living. With its scale and flexibility, the residence can be easily reimagined as a comfortable two-bedroom home, offering exceptional versatility.

The private wing includes a generous bedroom suite with excellent closet space, an en suite bath, and an additional powder room. A windowed kitchen adds to the home’s appeal, enhancing both functionality and natural light throughout.

521 Park Avenue is a white-glove prewar condominium offering 24-hour doorman, porter, handyman, live-in resident manager, and fitness center, with laundry and private storage in the basement. Pets, pied-à-terres, and flexible financing are welcome. Ideally located near Central Park, Madison and Fifth Avenue shopping, and world-class dining, this address offers the very best of Manhattan living.

Currently the unit does not have a washer/dryer, but it has been approved by the building and easy to install.

## Property Details

- **Property Type**: Condominium
- **Beds**: 1
- **Total Baths**: 2
- **Rooms**: 3
- **Sqft**: 1,000 sqft
- **Stories**: 12
- **Year Built**: 1912
- **Price per Sqft**: $1,650
- **Common Charges**: $2,619 / Monthly
- **Monthly Taxes**: $972 / mo
- **Listed On**: Oct 6, 2025
- **Days on Market**: 347 Days

### Residence Features

- Common On Floor
- Common Area

## Estimated Monthly Payment

**$11,934 / month**, assuming a 20% down payment ($330,000), a 6.5% interest rate and a 30-year term. The page's calculator lets a buyer change all three.

- **Principal & Interest**: $8,343
- **Property Taxes**: $972
- **Common Charges**: $2,619

Estimates only. Actual payments may vary. Confirm terms with your lender.

## Sales and market data

### Recent sales

4 apartments at 521 Park Avenue have recorded sales since September 2021, the most recent for $2,400,000 in August 2026. Prices are the figures recorded with the City, not asking prices.

| Unit | Beds | Sq Ft | Sold Price | $/ft² | Sold | Source |
| --- | --- | --- | --- | --- | --- | --- |
| [10C](https://realestaterebatesnewyork.com/buy/newyorkcity/manhattan/10065/521-park-avenue-c-10C-ny-10065) (Apartment) | 2 | 1,683 | $2,400,000 | $1,426/ft² | August 25, 2026 | MLS |
| 11B (Apartment) | 3 | 1,468 | $2,200,000 | $1,499/ft² | August 25, 2025 | City record · MLS |
| 2A (Apartment) | 1 | 1,911 | $2,000,000 | $1,047/ft² | December 5, 2024 | City record · MLS |
| 5BC (Apartment) | 4 | 3,440 | $4,625,000 | $1,344/ft² | April 19, 2024 | 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

- **This home**: $1,650,000
- **Median sold price**: $999,000
- **Difference**: +$651,000 (+65.2%)
- **This home, $/ft²**: $1,650
- **Median $/ft²**: $1,313
- **Comparable sales**: 117
- **Sales from**: September 2024 – June 2026
- **Middle half of those sales**: $805,000 – $1,200,000

Based on condo one-bedroom sales in Lenox Hill.

This building has not had enough comparable sales of its own in the period to support a median, so the benchmark is drawn from Lenox Hill instead.

### How these sales were negotiated

- **Sale-to-list price**: 95.2% (101 sales)
- **Sold below asking**: 83% (101 sales)
- **Typical time to find a buyer**: 91 days (105 sales)
- **Typical time to close**: 63 days (106 sales)

Based on condo one-bedroom sales in Lenox Hill 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, condo and house one-bedroom sales in Lenox Hill

| Year | Median sold price | Sales |
| --- | --- | --- |
| 2016 | $1,195,000 | 19 |
| 2017 | $1,195,000 | 57 |
| 2018 | $1,100,000 | 68 |
| 2019 | $950,000 | 57 |
| 2020 | $993,750 | 36 |
| 2021 | $941,000 | 65 |
| 2022 | $931,000 | 77 |
| 2023 | $972,500 | 53 |
| 2024 | $1,025,000 | 72 |
| 2025 | $995,000 | 58 |
| 2026 YTD | $999,999 | 39 |

Based on recorded condo and house one-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 521 Park Avenue](https://realestaterebatesnewyork.com/buildings/new-york-city/manhattan/521-park-avenue)

## Price and Property History for 521 Park Avenue, Unit 10A

Review the recorded listing activity for 521 Park Avenue, Unit 10A, including asking-price changes and prior market dates.

- **Latest price change**: Reduced by $150,000, or 8.3%, on January 14, 2026
- **Originally listed**: September 25, 2025 at $1,800,000
- **Entered contract**: March 25, 2026

| Date | Price | Listing event |
| --- | --- | --- |
| March 25, 2026 | $1,650,000 | Entered contract |
| January 14, 2026 | $1,650,000 | Asking price reduced by $150,000, or 8.3% |
| September 25, 2025 | $1,800,000 | Listed for sale by Compass |

## Property Tax History

Taxes at 521 Park Avenue #10A were $14,392 in 2026, up 1.8% from 2025.

| Year | Tax Assessment | Land | Additions | Billable Value | Property Tax | Tax Rate |
| --- | --- | --- | --- | --- | --- | --- |
| 2026 (FY 2026/27) | $129,707 | $15,820 | $113,887 | $115,137 | $14,392 | 12.5% (estimated) |
| 2025 (FY 2025/26) | $129,554 | $15,820 | $113,734 | $113,144 | $14,143 | 12.5% (estimated) |
| 2024 (FY 2024/25) | $112,756 | $15,820 | $96,936 | $111,120 | $13,890 | 12.5% |
| 2023 (FY 2023/24) | $108,919 | $15,820 | $93,099 | $108,919 | $8,941 after $4,676 abatement | 12.502% |
| 2022 (FY 2022/23) | $106,675 | $15,820 | $90,855 | $106,675 | $3,938 after $9,148 abatement | 12.267% |
| 2021 (FY 2021/22) | $107,827 | $15,820 | $92,007 | $107,827 | $3,945 after $9,248 abatement | 12.235% |
| 2020 (FY 2020/21) | $119,433 | $15,820 | $103,613 | $110,539 | $13,560 | 12.267% |
| 2019 (FY 2019/20) | $116,747 | $15,820 | $100,927 | $102,597 | $12,797 | 12.473% |
| 2018 (FY 2018/19) | $112,670 | $15,820 | $96,850 | $94,410 | $11,907 | 12.612% |
| 2017 (FY 2017/18) | $104,776 | $15,820 | $88,956 | $85,944 | $10,931 | 12.719% |
| 2016 (FY 2016/17) | $99,079 | $15,820 | $83,259 | $78,585 | $10,131 | 12.892% |
| 2015 (FY 2015/16) | $79,737 | $15,820 | $63,917 | $74,231 | $9,563 | 12.883% |
| 2014 (FY 2014/15) | $75,810 | $15,820 | $59,990 | $70,114 | $9,013 | 12.855% |
| 2013 (FY 2013/14) | $70,342 | $15,820 | $54,522 | $65,287 | $8,582 | 13.145% |
| 2012 (FY 2012/13) | $67,988 | $15,820 | $52,168 | $60,366 | $7,957 | 13.181% |
| 2011 (FY 2011/12) | $77,282 | $15,820 | $61,462 | $55,353 | $7,436 | 13.433% |
| 2010 (FY 2010/11) | $59,163 | $15,820 | $43,343 | $48,160 | $6,431 | 13.353% |

The City has not published the official FY2026/27 and FY2025/26 tax rates yet. We calculated the tax for those years using the prior year’s rate, so treat them as an estimate rather than a figure the City has adopted. Every rate without the Estimated marker is the published one.

Tax Assessment is the assessed value on the City’s roll, and it is the figure other listing sites publish. It is not what the bill is calculated on. New York phases assessment changes in gradually for some tax classes, so the City bills the Billable Value shown beside it, less any exemption the owner holds. It usually trails the assessment, and it can sit above it for a few years after an assessment falls.

Where an abatement applies, Property Tax is the amount owed after it. Abatements are granted to the property and do not necessarily transfer to a new owner.

Figures are the New York City Department of Finance assessment roll for tax lot 1013951124. Assessed and billable values are determined by the City for tax purposes and are not an appraisal or an estimate of market value. Tax classes and rates are set annually and can change.

[How we source and calculate NYC property tax data](https://realestaterebatesnewyork.com/nyc-property-tax-data-methodology)

## About The Building

### 521 Park Avenue

Lenox Hill · Condominium

521 Park Avenue, New York, NY 10065

A building in Lenox Hill, currently featuring 0 active listings.

- **Year Built**: 1912
- **Active Units**: 0
- **Floors**: 12

[View the building page](https://realestaterebatesnewyork.com/buildings/new-york-city/manhattan/521-park-avenue)

### Available Residences — For Sale (2)

| Unit | Beds | Baths | Size | Price / Ft² | Price | Listing Office | Listed Date | Days on Market |
| --- | --- | --- | --- | --- | --- | --- | --- | --- |
| [10A](https://realestaterebatesnewyork.com/buy/newyorkcity/manhattan/10065/521-park-avenue-10a-ny-10065) | 1 | 2 | 1,000 sqft | $1,650 | $1,650,000 (-8.3%) — In contract | Compass | Oct 6, 2025 | 346 days |
| [3C](https://realestaterebatesnewyork.com/buy/newyorkcity/manhattan/10021/521-park-avenue-c-3C-ny-10021) | 2 | 2 | 1,693 sqft | $1,521 | $2,575,000 (-4.5%) — In contract | Douglas Elliman Real Estate | Sep 11, 2025 | 371 days |

### Recently Sold (1)

| Unit | Beds | Baths | Size | Price / Ft² | Sold Price | Listing Office | Listed Date | Sold Date |
| --- | --- | --- | --- | --- | --- | --- | --- | --- |
| [10C](https://realestaterebatesnewyork.com/buy/newyorkcity/manhattan/10065/521-park-avenue-c-10C-ny-10065) | 2 | 2 | 1,683 sqft | $1,426 | $2,400,000 | Sothebys International Realty | May 11, 2026 | Aug 25, 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

- [521 Park Avenue — building page](https://realestaterebatesnewyork.com/buildings/new-york-city/manhattan/521-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.