Manhattan / Upper East Side-Carnegie Hill / 10022
521 PARK AVENUE
What has sold here
Every transfer the City has recorded against this lot since 2003 with a consideration above zero. A co-op apartment has no deed, so its sale is recorded as a Real Property Transfer Tax return instead; both are printed here and the instrument is named in the last column. The figure is the consideration as filed, which is not always the price a buyer would recognise.
| Recorded | Consideration | Unit | What transferred | Instrument |
|---|---|---|---|---|
| 25 Aug 2025 | $2,200,000 | 11B | SINGLE RESIDENTIAL CONDO UNIT | DEED |
| 5 Dec 2024 | $2,000,000 | 2A | SINGLE RESIDENTIAL CONDO UNIT | DEED |
| 19 Apr 2024 | $4,625,000 | 5BC | SINGLE RESIDENTIAL CONDO UNIT | DEED |
| 8 Jul 2021 | $1,995,000 | 12A | SINGLE RESIDENTIAL CONDO UNIT | DEED |
| 10 May 2021 | $5,900,000 | 11C | SINGLE RESIDENTIAL CONDO UNIT | DEED |
| 21 Dec 2018 | $1,900,000 | 11A | SINGLE RESIDENTIAL CONDO UNIT | DEED |
| 23 May 2018 | $990,000 | 11B | SINGLE RESIDENTIAL CONDO UNIT | RPTT&RET |
| 21 Mar 2018 | $4,300,000 | 4B | SINGLE RESIDENTIAL CONDO UNIT | DEED |
| 15 Mar 2017 | $1,650,000 | 12A | SINGLE RESIDENTIAL CONDO UNIT | DEED |
| 28 Dec 2016 | $3,900,000 | 4B | SINGLE RESIDENTIAL CONDO UNIT | DEED |
| 22 Dec 2015 | $4,700,000 | 3A | SINGLE RESIDENTIAL CONDO UNIT | DEED |
| 15 Jul 2014 | $17,450,000 | 6A | SINGLE RESIDENTIAL CONDO UNIT | DEED |
| 5 Jun 2013 | $2,488,000 | 8A | SINGLE RESIDENTIAL CONDO UNIT | DEED |
| 7 Sep 2012 | $2,025,000 | 8A | SINGLE RESIDENTIAL CONDO UNIT | DEED |
| 26 Jan 2012 | $1,450,000 | 8A | SINGLE RESIDENTIAL CONDO UNIT | DEED |
| 20 Jul 2011 | $1,350,000 | 12A | SINGLE RESIDENTIAL CONDO UNIT | DEED |
| 26 Mar 2010 | $1,720,000 | 10A | SINGLE RESIDENTIAL CONDO UNIT | DEED |
| 19 Sep 2007 | $11,250,000 | 6A | SINGLE RESIDENTIAL CONDO UNIT | DEED |
| 27 Jul 2007 | $3,550,000 | 10B | SINGLE RESIDENTIAL CONDO UNIT | DEED |
| 23 Mar 2006 | $7,450,000 | 5B/C | SINGLE RESIDENTIAL CONDO UNIT | DEED |
| 5 Aug 2004 | $1,400,000 | 11A | SINGLE RESIDENTIAL CONDO UNIT | DEED |
| 20 Nov 2003 | $2,050,000 | 10B | SINGLE RESIDENTIAL CONDO UNIT | DEED |
- DEED
- DEED. Conveys real property: a condominium apartment, or an entire building and the land under it.
- RPTT&RET
- BOTH RPTT AND RETT. A New York City Real Property Transfer Tax return filed together with the New York State return. A co-operative apartment sale conveys shares rather than real property, so this return, and not a deed, is what gets recorded.
By year
| Year | Transfers | Median recorded | Lowest | Highest |
|---|---|---|---|---|
| 2025 | 1 | $2,200,000 | - | - |
| 2024 | 2 | $3,312,500 | $2,000,000 | $4,625,000 |
| 2021 | 2 | $3,947,500 | $1,995,000 | $5,900,000 |
| 2018 | 3 | $1,900,000 | $990,000 | $4,300,000 |
| 2017 | 1 | $1,650,000 | - | - |
| 2016 | 1 | $3,900,000 | - | - |
| 2015 | 1 | $4,700,000 | - | - |
| 2014 | 1 | $17,450,000 | - | - |
| 2013 | 1 | $2,488,000 | - | - |
| 2012 | 2 | $1,737,500 | $1,450,000 | $2,025,000 |
| 2011 | 1 | $1,350,000 | - | - |
| 2010 | 1 | $1,720,000 | - | - |
| 2007 | 2 | $7,400,000 | $3,550,000 | $11,250,000 |
| 2006 | 1 | $7,450,000 | - | - |
| 2004 | 1 | $1,400,000 | - | - |
| 2003 | 1 | $2,050,000 | - | - |
The building on the lot
Section through the lot
Assessment
Assessed value is the figure the Department of Finance uses to levy property tax. For a class two building it is derived from an income approach and it is capped in how fast it can rise. It is not a market valuation and the two figures routinely differ by a wide margin. What the assessment does and does not tell you.
Classification and location
The Department of Finance building classification list does not publish a description for code RM. On this site that code appears almost only on condominium billing lots.
Other buildings in Upper East Side-Carnegie Hill
| Address | Class | Res. units | Built | Transfers | Median apartment, 5 yr |
|---|---|---|---|---|---|
| 1524 3 AVENUE | D6 | 430 | 1967 | 1 | - |
| 150 EAST 69TH STREET | D4 | 378 | 1959 | 314 | $1.90m |
| 1150 MADISON AVENUE | D6 | 343 | 1923 | 1 | - |
| 1680 3 AVENUE | D6 | 280 | 1980 | 1 | - |
| 1239 MADISON AVENUE | RM | 251 | 1969 | 192 | $2.88m |
| 118 EAST 60 STREET | D4 | 234 | 1963 | 239 | $669k |
| 1538 3 AVENUE | RM | 229 | 1991 | 261 | $1.72m |
| 171 EAST 84 STREET | RM | 217 | 1987 | 209 | $1.40m |
| 120 EAST 87 STREET | RM | 214 | 1981 | 249 | $999k |
| 48 EAST 89 STREET | D4 | 210 | 1973 | 168 | $1.74m |
| 800 5 AVENUE | D8 | 208 | 1979 | 0 | - |
| 1327 MADISON AVENUE | RM | 205 | 1984 | 171 | $1.93m |