New York City » 10017 » 1st Ave » 809 1st Ave

809 1st Avenue, New York, NY 10017 Property Information

Also known as: 809 United Nations Plz, New York, NY 10017

809 1st Avenue, New York, NY 10017 Property Information

Also known as: 809 United Nations Plz, New York, NY 10017

Due to the nature of this address' parcel subdivisions, there may be only limited information available in this property report. To explore the full range of property information for this address, log in or create a free account and view the property reports of each individual parcel.

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Address

Primary address	809 1st Avenue
Secondary address	809-817 1st Ave
Neighborhood	Turtle Bay

Zip code	10017
Borough	Manhattan
Block & lot	01338-7503

Sales & Tax Overview for 809 1st Avenue, New York

View detailed information on past sales, title documents and property taxes, including the assessed market value, in their dedicated tabs.

Tax class	Register

Lot & Building Information for 809 1st Avenue, New York

Lot sqft	9,200
Lot dimensions	100 ft x 80 ft
Building class	Special Condominium Billing Lot (R0) i Building classes in NYC are all explained here: NYC building classes
Building sqft	102,986
Buildings on lot	1
Stories	11

Year built	1964
Frontage(s)	1 Avenue (narrow)
Nearest wide street	1 Avenue
Distance to wide street	Register

Zoning & Use for 809 1st Avenue, New York

Zoning	Register

Commercial units	8
Conversion feasibility index	i The Conversion Feasibility Index (CFI) indicates the potential for converting existing office spaces into multifamily properties by assessing functional property characteristics. The CFI score ranges between 0 and 100. A CFI of 90+ is considered a great score; a CFI of 75+ considered a reasonable score. The detailed methodology for CFI is found here. Register

Units & Related Parcels

Unit	Sale Date	Sqft
Unit 1	10/20/2021	40,525
Unit 2	10/20/2021	8,034
Unit 3	10/20/2021	8,246
Unit 4	10/20/2021	8,759
Unit 5	12/15/1999	8,759
Unit 6	02/24/1999	8,759
Unit 7	10/20/2021	2,983
Unit 8	09/28/2001	16,921

Area Overview

Walk Score

Transit Score

Bike Score

School district	2
Community district	6

Closest police station	0.37 Miles
Closest fire station	0.32 Miles

View more neighborhood information such as transportation, nearby schools and risk designations in the dedicated tab.

Other Property Data for 809 1st Avenue, New York

New York property reports include comprehensive occupancy, development and violation information. Create a free account to access valuable data points such as:

Floor area ratio (FAR) for 809 1st Avenue, New York, NY 10017, including commercial and residential FAR, FAR as built and usable floor area.

Development maps such as planimetric, zoning, urban landscape, and HPD alternative enforcement program maps.

Violations for 809 1st Avenue, New York, NY 10017, including DOB violations, ECB violations, HPD violations and 311 complaints.

Alternate Addresses

You will find all alternate addresses for the property in this section.

809-817 1st Ave, New York, NY 10017
809-817 United Nations Plz, New York, NY 10017
809-817 Unp, New York, NY 10017

About 809 1st Avenue, New York

What is the year built & the total sq. ft. for 809 1st Avenue, New York, NY 10017?

809 1st Avenue, New York, NY 10017 was built in 1964 and has a total of 102,986 square feet.

Ownership Information for 809 1st Avenue, New York

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Property owner name for 809 1st Avenue, New York, NY 10017

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Building contacts for 809 1st Avenue, New York, NY 10017

Building management:	Register
Representatives (from permits):	Register
Tenants:	Register

Commercial Real Estate nearby

Real Estate Reports:

Eliza Theiss, Apr 23, 2026 $4.6M Hudson Yards Maintains Top Spot, Luxury Sales in Malba Set $2.5M Price Record for Queens

Despite prices declining, Hudson Yards remained the most expensive NYC neighborhood, but TriBeCa’s growth closed the gap to under $400,000, while Malba set a new historic price record for Queens at $2.5 million, securing the highest ranking ever for the borough at #5.

Eliza Theiss, Mar 19, 2026 Cheaper in the City? Nearly 100 Communities in Suburban NYC Surpass $1M

New Yorkers planning a move to the suburbs increasingly find their options limited, after suburban home values shot up twice as fast as NYC medians over the last decade. While larger homes and better prices were long the norm outside the five boroughs, today, many NYC buyers find their option restricted to a handful of suburban markets.

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Past Sales & Property History for 809 1st Avenue, New York

Create a free account to view the complete sales history for 809 1st Avenue, New York, including title documents, transfer conditions, mortgages, liens, and pre-foreclosures.

No recorded sales for this property.

Title Documents for 809 1st Avenue, New York

To view the complete history of deeds, mortgages, assignments of leases and rents, and more, sign up for free. Available data goes back to 1966.

Date	Type	Amount	Party 1	Party 2	Doc image
04/30/2013 - D 07/09/2013 - R	NYC Real Property Transfer Tax (2013061901788001)

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R: Recorded date
D: Document date

Assessment History for 809 1st Avenue, New York

Data not available for this property.

Permits for 809 1st Avenue, New York

The complete history of permits filed for 809 1st Avenue, New York, including new construction or demolition permits, plus any work pertaining to plumbing, heating and sprinkler systems is available with a free account. Available data goes back to 1990.

Filing date	Job type	Job status	Job description	Initial cost
10/28/2025	Alteration
09/03/2025	Alteration
07/17/2025	Alteration
07/11/2025	Alteration
07/09/2025	Alteration
06/18/2025	Alteration
05/16/2025	Alteration
04/18/2025	Alteration
02/07/2025	Alteration
01/10/2025	Alteration

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More about New York City Property Records

Turtle Bay Residential Market Stats

Access a detailed real estate market overview of Turtle Bay so you can assess current trends, home values, types of properties sold and transaction volume.
View the median home sale price in Turtle Bay and compare it to other neighborhoods in Manhattan.

Median Sale Price

$826,250

-11.2% YoY

Median Price/Sqft

$1,192

-17.1% YoY

Manhattan Median Sale Price

$1,100,000

1.9% YoY

Check out recently sold homes in Manhattan and see how their prices compare.

Risk

FEMA flood zone(s):	X (See more on map)

Transportation

Distance to Subway

Closest station

3rd Ave & 42nd St at SW Corner

Station lines

GS-4-5-6-7

Distance (miles)

0.345

View subway map

Bus Routes
Name	1 Av/E 45 St
Line	M15
Distance (miles)	0.036

Schools

Nearest elementary schools

Name	Rating	Att. zoned	Type	Grade range	No of students	Distance to school (mi)
P.S. 59 Beekman Hill International	8	Yes	Public	PK, K-5	523	0.57
P.S. 59 Beekman Hill International	8	Yes	Public	PK, K-5	523	0.57
Aaron School	NR	No	Private	K-12	169	0.08
Aaron School K - 12	NR	No	Private	K-12	185	0.09
The Family School	NR	No	Private	PK, K-6	0	0.12

Nearest middle schools

Name	Rating	Att. zoned	Type	Grade range	No of students	Distance to school (mi)
Jhs 104 Simon Baruch	8	Yes	Public	6-8	891	1.24
Aaron School	NR	No	Private	K-12	169	0.08
Aaron School K - 12	NR	No	Private	K-12	185	0.09
Lyceum Kennedy Japanese School	NR	No	Private	PK-12	197	0.20
Lyceum Kennedy French American School	NR	No	Private	PK, K-12	0	0.20

Nearest high schools

Name	Rating	Att. zoned	Type	Grade range	No of students	Distance to school (mi)
Aaron School	NR	No	Private	K-12	169	0.08
Aaron School K - 12	NR	No	Private	K-12	185	0.09
Lyceum Kennedy Japanese School	NR	No	Private	PK-12	197	0.20
Lyceum Kennedy French American School	NR	No	Private	PK, K-12	0	0.20
The Beekman School	NR	No	Private	9-12	71	0.30

Neighbors for 809 1st Avenue, New York

Here are the neighbors for 809 1st Avenue, New York, NY 10017.

Address	Square feet	Purchase date	Purchase price
335 E 45th St, New York	79,658	02/18/1993
315 E 46th St, New York	50,143	11/02/2009	$44,700,000
303 E 46th St, New York	7,800	12/26/2012	$4,100,000
301 E 45th St, New York	90,405
862 2nd Ave, New York	3,750	05/31/1995
333 E 46th St, New York	154,000	07/11/1987
335 E 46th St, New York	25,470	08/12/1986
866 2nd Ave, New York	90,605
320 E 46th St, New York	253,256	03/04/1999
821 1st Ave, New York	189,840	09/30/1985
823 United Nations Plz, New York	396	11/01/1973
321 E 45th St, New York	58,500	08/18/2004	$345,000
310 E 46th St, New York	387,094	09/18/2014	$800,000
300 E 46th St, New York	191,613	03/01/2010	$10,000,000
315 E 47th St, New York	30,317	08/13/1970
333 E 45th St, New York	130,200
330 E 46th St, New York	152,676	09/22/1999
301 E 47th St, New York	290,001	08/17/2006	$124,250,000
305 E 47th St, New York	139,405
1 United Nations Plz, New York	586,305