New York City, New York

New York publishes the recorded owner of all 858,284 tax lots and the consideration on 17.1 million recorded instruments for nothing, and then leaves the reader to work out that "One City Block LLC" is Google.

8 buildings · 7 with an owner established · 13 sources · 1 tier B · 7 tier A · prepared 2026-09-27

Can you find out who owns it?

New York City is the most openly documented large property market anywhere. The Department of City Planning's PLUTO file names the recorded owner of every one of the city's 858,284 tax lots alongside assessed land and total value, floor area split by office, retail and residential use, number of floors and year built — free, no key, no registration. The Department of Finance's ACRIS land-records register goes further and publishes 17,090,001 recorded instruments as bulk open data, each with its consideration amount and with both named parties and their mailing addresses, which is how a single-asset LLC's sponsor is identified. The gate is therefore not money or law but resolution: owner names are unnormalised free text with no parent-company linkage, 8,241 lots read "UNAVAILABLE OWNER" or "NAME NOT ON FILE", 987 are blank, and most marquee towers are titled to a numbered LLC.

Is ownership public?An open dataset names the owner

Cost of one title searchNot available at any price

Bulk ownership dataNYC Open Data (Socrata): PLUTO 64uk-42ks gives ownername per tax lot; ACRIS Master bnx9-e6tj + Parties 636b-3b5g + Legals 8h5j-fqxa give amount and named parties per document. Free, no key, no registration; all prior PLUTO versions via DCP's BYTES of the BIG APPLE.

Sale pricesEvery sale, with its address

Sites that forbid taking their data

zillow.com — “Terms page could not be opened to quote a clause: HTTP 403 to a scripted fetch, body 37 bytes. Zillow's published terms are known to forbid scraping, and StreetEasy (Zillow-owned) is the dominant NYC listings portal, so neither is used here — the city's own open data replaces them entirely.”
streeteasy.com — “HTTP 403 to a scripted fetch, body 37 bytes; terms not quotable. Treated as prohibited and not used.”

The marquee buildings

The towers that set the tone of the core, and who holds them. A price is the price a document states, on the date it states — not an estimate of what the building is worth now.

Building	Use	Owner	Owner type	Last price paid
Empire State Building 338 5 Avenue (PLUTO) / 350 Fifth Avenue, Manhattan — BBL 1008350041 2,812,739 sq ft building area (PLUTO); 2,711,351 rentable sq ft office (ESRT 10-K) · 102 floors	Office	Empire State Realty Trust, Inc. (NYSE: ESRT) PLUTO ownername is "ESRT EMPIRE STATE BUILDING, L.L.C.", ownertype P, assessed land $99,000,000 and total $577,440,900, built 1931, class O4. ESRT's FY2025 10-K lists The Empire State Building at 2,711,351 rentable sq ft, 91.8% occupied, $172,538,871 annualised rent. Note the address trap: PLUTO says 338 5 Avenue.	REIT	—B NYC Department of City Planning, on NYC Open Data
One Vanderbilt 51 East 42 Street (PLUTO) / One Vanderbilt Avenue, Manhattan — BBL 1012770027 1,678,135 sq ft building area (PLUTO); 1,657,198 rentable sq ft (SL Green 10-K) · 60 floors	Office	SL Green Realty Corp. (NYSE: SLG), 55.0% joint-venture interest 55.0% PLUTO ownername "ONE VANDERBILT OWNER LLC", assesstot $604,668,150. SL Green's FY2025 10-K lists One Vanderbilt Avenue under Manhattan unconsolidated office at 55.0% ownership, 100% leased, and reports it closed the sale of a 5.0% interest to Mori Building Co., Ltd. "at a gross asset valuation of $4.7 billion", proceeds $86.6m.	REIT	—A SL Green Realty Corp., via SEC EDGAR
767 Fifth Avenue (The General Motors Building) 761 5 Avenue (PLUTO), Manhattan — BBL 1012940001 1,970,335 net rentable sq ft (BXP 10-K); 1,824,820 sq ft building area (PLUTO) · 50 floors	Office	BXP, Inc. (NYSE: BXP), 60% ownership 60% BXP's FY2025 10-K Item 2 lists "767 Fifth Avenue (The GM Building) (60% ownership), New York, NY, 98.8% occupied, 1 building, 1,970,335 net rentable sq ft". PLUTO records the title holder as "767 FIFTH PARTNERS LLC" with assessed land $106,200,000 and total $826,881,300 — the LLC and the disclosing REIT reconciled.	REIT	—A BXP, Inc., via SEC EDGAR
30 Rockefeller Plaza (Comcast Building), Rockefeller Center 1250 Avenue of the Americas (PLUTO) / 30 Rockefeller Plaza — BBL 1012657501 2,122,138 sq ft building area, of which 2,051,112 sq ft office (PLUTO) · 70 floors	Office	Rockefeller Center Properties (RCP) PLUTO ownername "ROCKEFELLER CENTER PROPERTIES (RCP)", assessed land $108,408,604, total $624,207,159, built 1937. DOF's sales file records the same BBL under the address "30 ROCKEFELLER PLAZA", which is how the identity is confirmed. Adjacent Rockefeller Center lots read "RCPI HOLDCO LCC" and "ROCKEFELLER CTR NORTH INC". PLUTO names only the title holder, never a sponsor.	Private company	—A NYC Department of City Planning, on NYC Open Data
270 Park Avenue (JPMorganChase world headquarters) 270 Park Avenue, Manhattan — BBL 1012830021 2,050,615 sq ft, all of it office (PLUTO) · 60 floors	Office	JPMorgan Chase Bank PLUTO ownername "JPMORGAN CHASE BANK", class O4, yearbuilt 2021, assessed land $43,380,000 and total $687,893,400 — the highest assessed total of any wholly privately owned Manhattan office lot in PLUTO 26v2 outside the Hudson Yards condominiums. An owner-occupier, so the raw PLUTO string needs no resolution.	Public company	—A NYC Department of City Planning, on NYC Open Data
Chelsea Market 75 Ninth Avenue, Manhattan — BBL 1007130001 1,100,533 sq ft, of which 986,862 sq ft office and 113,670 sq ft retail (PLUTO) · 8 floors	Mixed use	Manhattan Chelsea Market LLC (Google LLC) PLUTO ownername "MANHATTAN CHELSEA MARKET LLC", ownertype P, built 1905, assesstot $220,685,400. ACRIS Parties gives that entity's mailing address as "1600 AMPHITHEATRE PKWY, MOUNTAIN VIEW CA" on document 2018042501252001 — i.e. the register itself resolves the LLC to Google.	Public company	$2,397,501,899 2018-03-20 Sale price and date as recorded in DOF's Citywide Annualized Calendar Sales file for BBL 1007130001, gross sq ft 1,100,533. A NYC Department of Finance, on NYC Open Data
Stuyvesant Town – Peter Cooper Village 240 1 Avenue, Manhattan — BBL 1009720001 (Stuyvesant Town) and the adjoining Peter Cooper Village lot 8,942,176 sq ft building area on the Stuyvesant Town lot (PLUTO) · 13 floors	Residential	BPP ST Owner LLC (Blackstone Property Partners) 8,764 residential units on this lot; the adjoining "BPP PCV OWNER LLC" lot carries a further 2,491, and PLUTO owner names beginning "BPP" total 13,481 units on 7 lots. ACRIS Parties names the grantee as "BPP ST OWNER LLC, C/O BLACKSTONE PROPERTY ADVISORS L.P., 345 PARK AV, NEW YORK NY" and the grantor as ST-DIL LLC c/o CWCapital.	Private equity	$4,111,111,766.15 2015-12-18 ACRIS document 2015122100442005, doc_type DEED, document_date 2015-12-18, document_amt 4,111,111,766.15, percent_trans 100, for Manhattan block 972 lot 1. A NYC Department of Finance, Office of the City Register, on NYC Open Data
30 Hudson Yards 500 West 33 Street, Manhattan — BBL 1007027501 3,224,812 sq ft building area, of which 2,307,575 sq ft office (PLUTO) · 68 floors	Office	Not established the register is open, but this building was not matched Left blank deliberately: PLUTO's ownername for this lot is the placeholder "UNAVAILABLE OWNER" (one of 8,241 such lots), and the lot is a condominium billing lot, so no register read here names an owner. Assessed land $58,004,101, total $764,317,801, built 2015. The open register has the price but not the name.	Not established	$2,155,000,000 2019-06-14 DOF sales file, address "30 HUDSON YARDS, TW", BBL 1007027501, building class category 43 CONDO OFFICE BUILDINGS — a condominium interest, not the whole tower. A NYC Department of City Planning, on NYC Open Data

The core land

The most valuable ground in the city, and what the public record says about it.

Manhattan carries 51.5% of the city's assessed value on 5.0% of its tax lots. The single most valuable line in the public record is not a tower at all but an airport, and the most valuable ground per square foot is a Midtown office plaza.

Highest assessed tax lot, citywide$8,496,376,200

PLUTO 26v2, BBL 4142600001, 154-68 Brookville Blvd, Queens (John F. Kennedy International Airport), ownername "PORT AUTHORITY OF NY AND NJ", 17,095,037 sq ft of buildings on assessed land of $3,205,633,833. Read 2026-09-27.

Highest assessed lot in Manhattan$1,785,765,150

PLUTO 26v2, BBL 1000580001, 185 Greenwich Street (One World Trade Center), 104 floors, 8,966,500 sq ft, 7,167,001 sq ft office, assessed land $225,000,000. PLUTO's ownername reads "LOWER MANHATTAN DEVELOPMENT CORPORATION", which we do not treat as the owner. Read 2026-09-27.

Citywide assessed total across 858,284 tax lots$533,820,080,909

PLUTO 26v2 sum of assesstot; land alone sums to $113,085,968,508 and building area to 5,746,644,474 sq ft. Manhattan is 42,504 lots, $275,175,120,654 assessed, 1,839,286,845 sq ft, 477,236,294 sq ft of it office. Read 2026-09-27.

Most valuable ground in Manhattan, per sq ft of lot$3,082 per sq ft

PLUTO 26v2: 9 West 57 Street, assessed land $191,250,000 on a 62,058 sq ft lot, ownername "SOLOW BUILDING COMPANY II, L.L.C". Next is 1221 Avenue of the Americas at $1,923/sq ft ($197,042,400 on 102,452 sq ft). For scale, Central Park (1000 5 Avenue, NYC Parks) is assessed at $2,855,117,700 of land over 36,590,000 sq ft, or $78/sq ft. Read 2026-09-27.

Largest recorded sale in the open sales file$2,397,501,899

NYC DOF Citywide Annualized Calendar Sales Update, 845,607 rows covering 2016-01-01 to 2025-12-31: 75 9 Avenue (Chelsea Market) on 2018-03-20. Runners-up: 245 Park Avenue $2,210,000,000 (2017-05-05), 30 Hudson Yards $2,155,000,000 (2019-06-14), 787 7 Avenue $1,932,900,000 (2016-01-27). Read 2026-09-27.

Who builds the houses

New-home building in this market: the volume, and the firms behind it. Ownership of a builder matters as much as its volume — a private-equity platform and a family firm behave differently.

New York has no housebuilder league table and cannot be given one honestly. Title to nearly every new building sits in a single-asset LLC, and the city's own permit data will not fix it: 24,811 legacy DOB new-building filings carry the owner business name "N/A", another 5,808 "NA", 1,388 "OWNER"; and in DOB NOW, summing proposed dwelling units by owner yields 461,344 units for an owner called "PR" and 46,271 units across 216 townhouse filings — the field double-counts across filings and is unusable as a units table. The scale of the resolution problem is easiest to see in PLUTO: LeFrak, TF Cornerstone, Two Trees and Extell, all of which hold thousands of New York apartments, return zero lots when their names are searched, because none of them takes title in its own name. What can be measured is who holds the existing stock, and how much is completed: DCP's Housing Database records 23,398 completed new-building jobs with a net gain of 370,027 Class A units, from applications filed between 1998-08-07 and 2026-01-01 (version 25Q4). The table below is therefore holders of housing, not annual builders, and each figure is a PLUTO 26v2 sum over the exact owner string.

Name	Type	Residential units held (PLUTO 26v2)
New York City Housing Authority 651 lots with residential units; 826 lots and 151,084,036 sq ft of building area in total, the largest floor-area holding of any single owner string in the city. Public housing, and by a wide margin the city's largest landlord.	Government	177,155 unitsA NYC Department of City Planning, on NYC Open Data
Blackstone (owner strings beginning "BPP") 7 lots, 14,639,543 sq ft, dominated by BPP ST Owner LLC (Stuyvesant Town, 8,764 units) and BPP PCV Owner LLC (Peter Cooper Village, 2,491). ACRIS Parties gives the mailing address as c/o Blackstone Property Advisors L.P., 345 Park Avenue, which is what ties the prefix to Blackstone.	Private equity	13,481 unitsA NYC Department of City Planning, on NYC Open Data
Riverbay Corporation (Co-op City) A single tax lot in the Bronx. A limited-equity housing cooperative, not an investor — the second-largest concentration of homes under one owner string in the city.	Private company	10,914 unitsA NYC Department of City Planning, on NYC Open Data
BSC Housing Company, Inc. 5 lots, 1,779,064 sq ft, PLUTO ownertype P. Illustrates that the biggest private residential owner strings in New York are mid-century limited-profit housing companies, not modern platforms.	Private company	9,637 unitsA NYC Department of City Planning, on NYC Open Data
Rochdale Village Inc A single Queens lot; another limited-equity cooperative.	Private company	5,860 unitsA NYC Department of City Planning, on NYC Open Data
Trustees of Columbia University 121 lots. New York University follows with 3,450 units on 23 lots. Universities are among the very few large owners whose PLUTO strings are consistent enough to aggregate.	Institution	4,790 unitsA NYC Department of City Planning, on NYC Open Data

Commercial landlords

The commercial side, counted separately from housing: who holds the office, retail and industrial floor area.

The three New York office REITs disclose their portfolios in full, so the largest private commercial landlords can be stated exactly — unlike the private platforms (RXR, Related, Tishman Speyer, Silverstein), which appear in PLUTO only as per-building LLCs. Figures are as at 31 December 2025 from each company's FY2025 Form 10-K. The gap between register and filing is worth naming: PLUTO's owner string for 601 Lexington Avenue is "UNAVAILABLE OWNER", while BXP's 10-K states plainly that it owns 55% of it.

Name	Type	Floor area
SL Green Realty Corp. 26 Manhattan office buildings — 16 consolidated at 9,480,852 sq ft and 10 unconsolidated at 13,868,633 sq ft — 93.0% leased, plus five prime retail properties at 313,347 sq ft, five development/redevelopment buildings at ~1.2m sq ft and two residential buildings (542 units, 484 dormitory beds). Five properties (One Vanderbilt, 11 Madison, 420 Lexington, 1515 Broadway, 245 Park) are 36.6% of portfolio annualised cash rent.	REIT	23,349,485 sq ft Manhattan officeA SL Green Realty Corp., via SEC EDGAR
Vornado Realty Trust 51 Manhattan operating properties: 19.2m sq ft of office in 26 of them, 2.3m sq ft of street retail in 45 of them, and 1,331 units in two Manhattan residential properties, plus development sites including 350 Park Avenue, Sunset Pier 94 Studios and 623 Fifth Avenue.	REIT	19.2M sq ft Manhattan officeA Vornado Realty Trust, via SEC EDGAR
Empire State Realty Trust, Inc. Ten office properties, all in Manhattan, three of them long-term ground leaseholds (1350 Broadway, 111 West 33rd Street, 1400 Broadway), plus 743 residential units. Entire portfolio is New York City. Flagship is the Empire State Building at 2,711,351 rentable sq ft.	REIT	7.9M sq ft office + 0.8M sq ft retailA Empire State Realty Trust, Inc., via SEC EDGAR
BXP, Inc. 10-K Item 2 names 767 Fifth Avenue/The GM Building (60%, 1,970,335 sq ft), 601 Lexington Avenue (55%, 1,671,682), 399 Park Avenue (100%, 1,567,470), 7 Times Square (55%, 1,238,724), plus 599 Lexington, 250 West 55th, 200 Fifth Avenue, 360 Park Avenue South, 510 Madison and Dock 72 in Brooklyn. New York office rental revenue was $1,054,594 thousand in FY2025. The ~7.0M figure is our sum of the four largest named New York assets, not a figure BXP states.	REIT	~7.0M sq ft across its four largest New York assetsB BXP, Inc., via SEC EDGAR
New York City Department of Education 1,137 lots. Second only to NYCHA among single owner strings by floor area, and a reminder that the largest property owner in New York is New York.	Government	116,968,186 sq ftA NYC Department of City Planning, on NYC Open Data
Port Authority of New York and New Jersey The JFK Airport lot alone, BBL 4142600001, assessed at $8,496,376,200 — the highest-assessed tax lot in the city by a factor of two.	Government	17,095,037 sq ft on one lotA NYC Department of City Planning, on NYC Open Data

Looked for and not found

Claims this page would have made if a source could be opened. They are left out rather than guessed.

Rockefeller Center's sponsor. PLUTO names the title holders (Rockefeller Center Properties (RCP), RCPI Holdco LCC, Rockefeller Ctr North Inc) but no primary source opened here names the manager or beneficial owner behind them, so none is asserted.
One World Trade Center's owner. PLUTO's ownername for BBL 1000580001 reads "LOWER MANHATTAN DEVELOPMENT CORPORATION"; no Port Authority or leaseholder filing was opened to confirm who holds the fee and who holds the leasehold, so the figure is published without an owner.
245 Park Avenue. PLUTO's ownername for BBL 1013010001 is "METROPOLITAN TRANSPORTATION AUTHORITY" while SL Green's 10-K reports a 50.1% interest in a 1,782,793 sq ft building of that name — the two cannot both describe the fee, and the discrepancy was not resolved. A worked example of why PLUTO strings are not treated as authoritative here.
The private New York platforms — RXR, Related Companies, Tishman Speyer, Silverstein Properties, Extell, TF Cornerstone, LeFrak, Two Trees — have no filing obligation and their own sites would not open to automation, so no portfolio total is given for any of them. RXR is visible in PLUTO only as per-asset LLCs (RXR 590 Madison Owner LLC, RXR HB Owner LLC).
A NYC housebuilder ranking by units completed. None exists and neither DOB dataset supports deriving one.

Sources

Primary Land Use Tax Lot Output (PLUTO), version 26v2 — NYC Department of City Planning, on NYC Open Data · openA
NYC Citywide Annualized Calendar Sales Update (845,607 rows, 2016-01-01 to 2025-12-31) — NYC Department of Finance, on NYC Open Data · openA
ACRIS — Real Property Master (17,090,001 documents, latest recorded 2026-08-31) — NYC Department of Finance, Office of the City Register, on NYC Open Data · openA
ACRIS — Real Property Parties (named grantors and grantees with mailing addresses) — NYC Department of Finance, on NYC Open Data · openA
ACRIS — Real Property Legals (document to borough/block/lot) — NYC Department of Finance, on NYC Open Data · openA
SL Green Realty Corp. Form 10-K for the year ended 31 December 2025 (filed 2026-02-17) — SL Green Realty Corp., via SEC EDGAR · openA
Empire State Realty Trust, Inc. Form 10-K for the year ended 31 December 2025 (filed 2026-03-02) — Empire State Realty Trust, Inc., via SEC EDGAR · openA
Vornado Realty Trust Form 10-K for the year ended 31 December 2025 (filed 2026-02-09) — Vornado Realty Trust, via SEC EDGAR · openA
BXP, Inc. Form 10-K for the year ended 31 December 2025 — BXP, Inc., via SEC EDGAR · openA
Housing Database Project-Level Files, version 25Q4 — NYC Department of City Planning, on NYC Open Data · openA
DOB NOW: Build — Job Application Filings (owner business name unusable for aggregation) — NYC Department of Buildings, on NYC Open Data · openA
DOB Job Application Filings (legacy BIS; 24,811 new-building filings carry owner name "N/A") — NYC Department of Buildings, on NYC Open Data · openA
City of New York Terms of Use — City of New York · openA