66 Willow Avenue
Office in New York City, NY · 10305
At a glance
66 Willow Avenue is a 47,369-square-foot office building in New York City, New York, built in 1989. In its 2024 New York City benchmarking disclosure it reported a site energy-use intensity of 47.2 kBtu/ft² and 164 tCO₂e of greenhouse-gas emissions.
Local Law 84 (LL84) · reporting year 2024
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | — |
| Site EUI | 47.2 kBtu/ft² |
| Source EUI | 76.3 kBtu/ft² |
| GHG emissions | 164 tCO₂e |
| GHG intensity | 3.5 kgCO₂e/ft² |
| Electricity | 211,695 kWh |
| Natural gas | 15,158 therms |
| Gross floor area | 47,369 sq ft |
| Source record | nyc:52914092:2024 |
Compliance context
Local Law 84 (LL84)
Under Local Law 97, buildings over 25,000 sq ft face carbon caps with fines of $268 per metric ton of CO₂e over the limit, phasing in from 2024.
Ownership
No owning organisation shown. Names of private individuals in the disclosure are not published here.
Own or manage this building? Claim it to correct the record and get compliance alerts.
Location
- Address
- 66 Willow Avenue
- City
- New York City
- State
- New York
- ZIP
- 10305
- Coordinates
- 40.61833, -74.07121
Within ~1 km
Nearby benchmarked buildings
- 330 Tompkins Avenuescore —
Self-Storage Facility · 280,125 sq ft
- One Edgewater Centerscore 81
Office · 259,000 sq ft
- 1 EDGEWATER ST.score 92
Office · 255,880 sq ft
Non-Refrigerated Warehouse · 215,365 sq ft
- Richmond Centerscore —
Residential Care Facility · 129,333 sq ft
- Ideal Paradise LLCscore —
Other · 122,250 sq ft
See also: most efficient in New York City · biggest emitters
How does 66 Willow Avenue compare with other office buildings in New York City?
The latest disclosures cover 3,384 office buildings in New York City, out of 48,310 buildings citywide. Its site EUI of 47.2 kBtu/ft² is about 27% below the average of 64.5 kBtu/ft² — it uses less energy per square foot than the typical building in that group. Its emissions intensity of 3.5 kgCO₂e/ft² is about 41% below the group average of 5.8 kgCO₂e/ft².
At 47,369 sq ft, it is about 77% below the average floor area of 205,440 sq ft for those buildings. It was built in 1989, 49 years later than the group's average year built (1940). Across all 24 jurisdictions BuildingCensus covers, the 15,264 office buildings average an ENERGY STAR score of 73 and a site EUI of 59.3 kBtu/ft².
What does a site EUI of 47.2 kBtu/ft² mean?
Site energy-use intensity (EUI) is the energy a building uses on site in a year divided by its floor area, in thousand Btu per square foot — lower is more efficient. 66 Willow Avenue's 47.2 kBtu/ft² across 47,369 sq ft works out to about 2.2 billion Btu (655 MWh-equivalent) in 2024. Its source EUI of 76.3 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 211,695 kWh of electricity and 15,158 therms of natural gas for the year.
Which law requires 66 Willow Avenue to report its energy use?
66 Willow Avenue reports under Local Law 84 (LL84), the legal basis of New York City's Energy and Water Data Disclosure program, which publishes each covered building's annual benchmarking results. The record shown here is the report-year 2024 disclosure (source record nyc:52914092:2024). Under Local Law 97, buildings over 25,000 sq ft face carbon caps with fines of $268 per metric ton of CO₂e over the limit, phasing in from 2024.
More office buildings in New York City
- 405 West 13th Street· 47,343 sq ft · score 100 (A)
- 380 Lafayette Street· 47,324 sq ft
- 549 West 180th Street· 47,309 sq ft · EUI 38.3 kBtu/ft²
- 222 East 59th Street· 47,250 sq ft · score 92 (A)
- 887 E. NEW YORK AVE.· 47,235 sq ft · score 65 (C)
- Lesser group - 887-921 East NY Ave· 47,235 sq ft · score 52 (D)
- Office buildings in New York City· 3,384 benchmarked
- All New York City benchmarked buildings· Local Law 84 (LL84)
- Most efficient large buildings in New York City
- Least efficient large buildings in New York City
- Biggest emitters in New York City
Frequently asked questions
What is 66 Willow Avenue's energy grade?
66 Willow Avenue did not report an ENERGY STAR score in its 2024 disclosure, but its site energy-use intensity was 47.2 kBtu/ft².
How much energy does 66 Willow Avenue use?
Its 2024 site energy-use intensity was 47.2 kBtu/ft² (76.3 kBtu/ft² source) across 47,369 sq ft, including 211,695 kWh of electricity and 15,158 therms of natural gas.
What are 66 Willow Avenue's carbon emissions?
66 Willow Avenue reported 164 tCO₂e of greenhouse-gas emissions (3.5 kgCO₂e/ft²) for 2024.
Where is 66 Willow Avenue?
66 Willow Avenue is in New York City, New York 10305. Its coordinates are 40.61833, -74.07121 (latitude, longitude), as published in the Energy and Water Data Disclosure file.
How big is 66 Willow Avenue and when was it built?
66 Willow Avenue has 47,369 sq ft of gross floor area, as reported in its 2024 disclosure. The disclosure lists 1989 as its year built. It is classed as office.
Is 66 Willow Avenue covered by Local Law 84 (LL84)?
Yes — it appears in the 2024 Energy and Water Data Disclosure disclosure, which lists the buildings reporting under Local Law 84 (LL84).
Working with New York City building benchmarking records? Pro adds alerts, change history and CSV export ($49/mo); Enterprise adds full national files, the API and an MCP server for AI tools.
About this data
Source: Energy and Water Data Disclosure (Local Law 84 (LL84)), as published October 2, 2026. See the methodology for how records are matched, cleaned and scored.
Cite as: BuildingCensus, “66 Willow Avenue, New York City, New York — 2024 benchmarking disclosure”, https://buildingcensus.com/buildings/new-york-city/66-willow-avenue-2280837d (data as of October 2, 2026).