2 units for sale in this building

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CONDO in Lenox Hill

521 Park Avenue, #10A

$1,800,000

1 bed

2 baths

Listing by Compass

CONDO in Lenox Hill

521 Park Avenue, #3C

$2,795,000

2 beds

2 baths

Listing by Douglas Elliman

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1 of 2

521 Park Avenue

521 Park Avenue, New York, NY 10065

24 units

12 stories

1912 built

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About

William Alciphron Boring (1859–1937) was an American born architect. He studied architecture at the École des Beaux-Arts in Paris & then returned to New York to work in the office of the renowned firm of McKim, Mead, and White.

In 1897, with his friend & colleague Edward Lippincott Tilton, Boring co-designed the federal Immigration Station at Ellis Island in New York harbor. The project was honored with numerous international design awards including a gold medal for architecture from the Exposition Universelle in Paris in 1900

Facts

Development status: Completed
District: Community District 108City Council District 4Police Precinct 19
Building class: R0
Documents and permits: View documents and permits

Available units

#10A

$1,800,000

Resale

1 bed

2 baths

1,000 ft²

Listing by Compass

#3C

$2,795,000

Price Drop$155,000

Resale

2 beds

2 baths

1,693 ft²

Listing by Douglas Elliman

Unavailable sales

			Status				Floor plan
09/22/25	#11B	$2,200,000	Sold (asking: $2,695,000; -18.37%)	3 beds	2 baths	- ft²
12/05/24	#2A	$2,000,000	Recorded closing	1 bed	1.5 baths	1,911 ft²	-
05/09/24		$1,450,000	Recorded closing	2 beds	2 baths	1,577 ft²	-
04/23/24	#5BC	$4,625,000	Sold (asking: $5,950,000; -22.27%)	4 beds	4.5 baths	3,440 ft²
02/27/24	#12B	$0	Recorded closing (non-market sale)	-	- baths	1,446 ft²	-
08/15/23	#D	$1,500,000	Recorded closing	-	- baths	820 ft²	-
10/15/21	#4A	$1,700,000	No longer available on StreetEasy	1 bed	1 bath	811 ft²
07/14/21	#12A	$1,995,000	Sold (asking: $1,995,000; 0%)	2 beds	2 baths	- ft²
05/10/21	#11C+	$5,900,000	Recorded closing	-	- baths	1,467 ft²	-
02/18/21	#PH-11C/12C	$7,450,000	Sold (can't find government record)	4 beds	5.5 baths	3,040 ft²
07/23/20	#11C/12C	$8,250,000	No longer available on StreetEasy	3 beds	5.5 baths	3,040 ft²
06/15/20	#C	$0	Recorded closing (non-market sale)	-	- baths	700 ft²	-
04/12/19	#S	$2,775,000	Recorded closing	2 beds	2 baths	1,600 ft²	-
12/27/18	#11A	$1,900,000	Sold (asking: $1,860,000; 2.15%)	1 bed	1.5 baths	1,000 ft²
09/13/18	#A/B	$2,925,000	Recorded closing	-	- baths	7,490 ft²	-
03/21/18	#4B	$4,300,000	Recorded closing	2 beds	2 baths	1,536 ft²	-
12/22/15	#3A+	$4,700,000	Recorded closing	1 bed	1.5 baths	1,022 ft²	-
12/22/15	#3AB	$5,650,000	No longer available on StreetEasy	3 beds	2.5 baths	2,441 ft²
09/24/15	#10C	$0	Recorded closing (non-market sale)	-	- baths	1,643 ft²	-
06/16/15	#4ABC	$20,000,000	No longer available on StreetEasy	5 beds	5 baths	4,500 ft²
07/03/14	#6	$17,450,000	Sold (asking: $17,850,000; -2.24%)	4 beds	4.5 baths	4,500 ft²
04/21/14	#4C	$9,400,000	No longer available on StreetEasy	2 beds	2 baths	1,593 ft²
06/13/13	#8	$12,950,000	Sold (can't find government record)	5 beds	5+ baths	4,500 ft²
12/24/12	#N	$0	Recorded closing (non-market sale)	-	- baths	900 ft²	-
12/14/12	#2B	$0	Recorded closing (non-market sale)	-	- baths	2,123 ft²	-
09/25/12	#8BC	$9,212,000	Sold (asking: $7,750,000; 18.86%)	4 beds	4.5 baths	3,200 ft²
02/02/12	#8A	$2,488,000	Sold (asking: $2,025,000; 22.86%)	1 bed	1 bath	875 ft²	-
09/06/08	#4	$20,000,000	No longer available on StreetEasy	4 beds	4 baths	4,900 ft²
07/18/07	#10B	$3,550,000	Sold (asking: $3,900,000; -8.97%)	2 beds	2 baths	1,378 ft²
05/05/06		$3,999,000	No longer available on StreetEasy	2 beds	1.5 baths	1,900 ft²	-
02/16/01	#6C	$2,550,000	Recorded closing	Studio	1 bath	- ft²	-
02/16/01	#6B	$1,500,000	Recorded closing	-	- baths	1,245 ft²	-
12/20/00	#6A	$1,000,000	Recorded closing	-	- baths	1,037 ft²	-
12/07/99	#5B/C	$3,564,000	Recorded closing	-	- baths	3,188 ft²	-
07/08/98	#9A	$698,000	Recorded closing	-	- baths	877 ft²	-

Unavailable rentals

						Floor plan
09/07/25	#5BC	$36,000	4 beds	4.5 baths	3,440 ft²
10/15/21	#1N	$10,500	2 beds	2 baths	2,000 ft²
06/29/21	#4A	$7,000	1 bed	1 bath	811 ft²
02/28/20	#2A	$15,000	1 bed	1.5 baths	1,911 ft²
07/17/19	#4C	$17,000	2 beds	2 baths	1,593 ft²
01/10/18	#4B	$11,500	2 beds	2 baths	1,536 ft²	-
07/02/13	#10A	$6,995	1 bed	1.5 baths	- ft²
06/13/11	#3B	$25,000	1 bed	1.5 baths	- ft²
01/23/09	#8A	$4,500	1 bed	1 bath	650 ft²	-
08/29/07		$12,000	1 bed	1 bath	811 ft²	-
03/05/07	#10B	$18,000	2 beds	2 baths	1,378 ft²
08/05/06		$7,900	2 beds	2 baths	1,580 ft²	-

Policies

Pets allowed
Cats and dogs allowed

Amenities

Services and facilities

Doorman
Full-time
Elevator

Wellness and recreation

Shared outdoor space

No info on shared outdoor space

Unit features

Not all features are available in every unit.

Central air
Dishwasher
Fireplace
Gas
Hardwood floors
Private outdoor space
Balcony, Terrace
View
City, Skyline
Washer/dryer

Explore Lenox Hill

Transit

Location	Distance
NRW456at Lexington Av/59th St	under 500 feet
FQat Lexington Av/63rd St	0.15 miles
NRat 59th St	0.19 miles
EMat 5th Av–53rd St	0.37 miles
EM6at Lexington Av–53rd St	0.37 miles