City Property Opportunity Map

Every tax lot owned by the City of New York, classified by development opportunity. Source data: DCP's City Owned and Leased Property (COLP) dataset joined to MapPLUTO 25v4 tax lot polygons. Filtered to non_city_ownership = "C" (city owned, no leased-from-private uses). Open the map →

City-owned parcels

12,872

43,227 ac of city land

Development opportunity

7,212

56% of all city-owned parcels

Vacant + flagged for disposition

14,281 ac

across 6,225 parcels

Total exempt assessed value

$60.26B

out of $60.71B total assessed

Opportunity tier breakdown

Every parcel is assigned a single opportunity tier based on COLP's disposition flag, MapPLUTO's land-use code, and the parcel's built-to-applicable FAR ratio.

T1 DISPOSITION

705

5.5% of city-owned parcels

Flagged for disposition

COLP marks this parcel as a potential disposition by the City.

T2 VACANT

5,520

43% of city-owned parcels

Vacant land

MapPLUTO classifies this lot as vacant land, or COLP records no current use.

T3 UNDERBUILT

987

7.7% of city-owned parcels

Under-built

Lot ≥5,000 sf with at most one small building, built to <25% of the maximum applicable FAR.

T4 OTHER

5,660

44% of city-owned parcels

Active use

Currently serving an active city function.

Opportunity by agency

DCAS, Parks, DEP, HPD and DOT control the bulk of the city's parcel inventory. Click an agency to filter the chart on the right (and the map) to that agency.

Top 16 agencies, ranked by opportunity-tier parcel count (T1 + T2 + T3). Bars are stacked: red = disposition, amber = vacant, blue = under-built, gray = active use.

Parks & Recreation
1,966
Citywide Administrative Services
1,795
Environmental Protection
956
Housing Preservation & Development
695
Transportation
619
Small Business Services
476
NYC Transit Authority
235
Education (DOE)
157
Economic Development Corp
135
Police Department
47
Sanitation
31
Fire Department
24
MTA
16
Homeless Services
12
Health + Hospitals
9
Cultural Affairs
6

In floodplain

4,298

33% of all city-owned parcels

Parcels intersecting the 2007 FEMA or 2015 preliminary FEMA floodplain (carried as FIRM07_FLAG/PFIRM15_FLAG in MapPLUTO).

In historic district or landmark

352

2.7% of all city-owned parcels

Parcels with a non-empty HistDist or Landmark attribute — under Landmarks Preservation Commission jurisdiction.

City-owned, leased out

0.2% of all city-owned parcels

City owns the lot but at least one COLP use record has leased_properties = "L" — i.e. leased to a private tenant.

Largest opportunity parcels

The 30 biggest tier-1 / tier-2 lots by area. These are vacant or disposition-flagged parcels — the city's headline inventory of potentially redevelopable land.

Parcel	Borough	Agency	Tier	Lot size	Assessed	Flags
JFK AIRPORT BBL 4142600001	Queens	Parks & Recreation	Vacant land	4,921 ac	$8.50B	floodhistoric
LAGUARDIA AIRPORT BBL 4009260001	Queens	Small Business Services	Flagged for disposition	673 ac	$4.33B	floodhistoric
FOUR SPARROW MARSH WILDLIFE RE BBL 3085910100	Brooklyn	Parks & Recreation	Vacant land	531 ac	$816.5M	flood
RIKERS ISLAND CORR. COMPLEX BBL 2026050040	Bronx	Environmental Protection	Vacant land	409 ac	$533.0M	flood
WARDS ISLAND PARK/NYS HOSPITAL BBL 1018190010	Manhattan	Parks & Recreation	Flagged for disposition	282 ac	$79.7M	flood
HOWLAND HOOK MARINE DIST CTR BBL 5014100250	Staten Island	Small Business Services	Flagged for disposition	210 ac	$89.1M	flood
SEAVIEW HOSPITAL BBL 5009550100	Staten Island	Citywide Administrative Services	Flagged for disposition	190 ac	$125.6M	floodhistoric
J F KENNEDY AIRPORT BBL 4142600101	Queens	Small Business Services	Vacant land	183 ac	$84.9M	flood
BROOKLYN NAVY YARD/MAR.DIV.6 BBL 3020230001	Brooklyn	Small Business Services	Flagged for disposition	148 ac	$230.2M	floodhistoric
HOMEPORT/NEW STAPLETON WTRFRNT BBL 5004870100	Staten Island	Parks & Recreation	Flagged for disposition	137 ac	$8.7M	floodhistoric
BBL 2059310175 BBL 2059310175	Bronx	Small Business Services	Vacant land	136 ac	$3.2M	flood
FRESH KILLS PARK BBL 5026650020	Staten Island	Parks & Recreation	Vacant land	131 ac	$51.0M	flood
HUNTS POINT MARKET BBL 2027700001	Bronx	Parks & Recreation	Flagged for disposition	129 ac	$44.1M	flood
J F KENNEDY AIRPORT BBL 4142600016	Queens	Education (DOE)	Vacant land	125 ac	$73.1M	flood
FRESH KILLS LANDFILL BBL 5059650500	Staten Island	Sanitation	Vacant land	118 ac	$95.8M	flood
PRALLS ISLAND BBL 5019350001	Staten Island	Parks & Recreation	Vacant land	104 ac	$42.5M	flood
FRESH KILLS LANDFILL BBL 5061690200	Staten Island	Sanitation	Flagged for disposition	92 ac	$21.5M	flood
SOUTH BROOKLYN MARINE TERMINAL BBL 3006620001	Brooklyn	Small Business Services	Flagged for disposition	86 ac	$33.5M	flood
ISLE OF MEADOWS BBL 5027250001	Staten Island	Parks & Recreation	Vacant land	84 ac	$3.3M	flood
BLOOMINGDALE PARK BBL 5070100001	Staten Island	Parks & Recreation	Vacant land	75 ac	$8.3M	flood
STATEN ISLAND INDUSTRIAL PARK BBL 5021620001	Staten Island	Parks & Recreation	Vacant land	71 ac	$21.8M	flood
STATEN ISLAND INDUSTRIAL PARK BBL 5015650001	Staten Island	Parks & Recreation	Vacant land	66 ac	$26.7M	flood
PAERDEGAT BASIN PARK ADDITION BBL 3083380001	Brooklyn	Parks & Recreation	Flagged for disposition	62 ac	$80.5M	flood
BROOKLYN ARMY TERMINAL BBL 3057780001	Brooklyn	Education (DOE)	Flagged for disposition	59 ac	$50.0M	flood
BBL 2054090040 BBL 2054090040	Bronx	Small Business Services	Vacant land	58 ac	$328K	flood
HUNTS PT MARKET WHOLESALE BBL 2027810500	Bronx	Environmental Protection	Flagged for disposition	58 ac	$24.1M	flood
ARLINGTON MARSH BBL 5013010001	Staten Island	Parks & Recreation	Flagged for disposition	53 ac	$4.3M	flood
L.U.W. ADJ TO HUNTS POINT MKT BBL 2027810301	Bronx	Small Business Services	Vacant land	52 ac	$3.2M	flood
FUTURE BROOKFIELD PARK BBL 5055700001	Staten Island	Parks & Recreation	Vacant land	51 ac	$12.3M	flood
BBL 2055190300 BBL 2055190300	Bronx	Citywide Administrative Services	Vacant land	50 ac	$1.5M	flood

Methodology

Pull every record from COLP (fn4k-qyk2) and filter to non_city_ownership = "C" (drops leased-from-private, mixed, state, and other).
Dedupe by BBL. For tax lots with more than one agency use, the primary agency is the one with the most records; ties are broken by a mission-salience priority (Parks > NYCHA > Education > DEP > DOT > HPD > ...). All other uses are kept as secondary_uses.
For each unique BBL, fetch the polygon from DCP's MapPLUTO feature service (25v4, January 2026), bringing along all 70+ PLUTO attributes including assessed value, FAR caps, flood flags, and historic district names.
Classify into the four opportunity tiers defined above. Tier 3 (under-built) is the softest signal — it picks up small structures sitting on large lots that the zoning allows to redevelop at far higher density (built FAR < 25% of the max applicable residential / commercial / facility FAR).
Vector-tile the polygons (zoom 9 to 15) into a 3.2 MB PMTiles file. The per-parcel record (8.7 MB raw, ~860 KB gzipped) is loaded on the map for popups and the side drawer.