320 W 66th St
Office in New York City, NY · 10023
At a glance
320 W 66th St is a 150,714-square-foot office building in New York City, New York, built in 1984. In its 2024 New York City benchmarking disclosure it reported an ENERGY STAR score of 95 out of 100 (grade A), a site energy-use intensity of 49.0 kBtu/ft² and 647 tCO₂e of greenhouse-gas emissions. That score is higher than 87% of the 2,519 scored office buildings in New York City.
Local Law 84 (LL84) · reporting year 2024
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | 95 (band A) |
| Site EUI | 49.0 kBtu/ft² |
| Source EUI | 93.1 kBtu/ft² |
| GHG emissions | 647 tCO₂e |
| GHG intensity | 4.3 kgCO₂e/ft² |
| Electricity | 944,976 kWh |
| Gross floor area | 150,714 sq ft |
| Source record | nyc:20637989:2024 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2024latest | 95 | 49.0 kBtu/ft² | 647 tCO₂e | |
| 2023 | — | 20.9 kBtu/ft² | 1,110 tCO₂e | |
| 2022 | — | 30.0 kBtu/ft² | 1,119 tCO₂e |
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
- 320 W 66th St
- City
- New York City
- State
- New York
- ZIP
- 10023
- Coordinates
- 40.77616, -73.98759
Within ~1 km
Nearby benchmarked buildings
Mixed Use Property · 2,797,249 sq ft
Mixed Use Property · 2,797,249 sq ft
- TEST Time Warner Centerscore —
Mixed Use Property · 2,797,249 sq ft
Mixed Use Property · 2,797,249 sq ft
- Deutsche Bank Centerscore —
Mixed Use Property · 2,598,958 sq ft
- CIG > LCPA_CAMPUS ON CMPscore —
Performing Arts · 2,396,331 sq ft
See also: most efficient in New York City · biggest emitters
How does 320 W 66th St 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. 320 W 66th St's ENERGY STAR score of 95 compares with an average of 72 across the 2,519 that report a score; it scores higher than 87% of them and lower than 11%. Its site EUI of 49.0 kBtu/ft² is about 24% 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 4.3 kgCO₂e/ft² is about 26% below the group average of 5.8 kgCO₂e/ft².
At 150,714 sq ft, it is about 27% below the average floor area of 205,440 sq ft for those buildings. It was built in 1984, 44 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.
How has 320 W 66th St's energy performance changed over time?
BuildingCensus holds 3 New York City disclosures for 320 W 66th St, covering report years 2022–2024. Site EUI moved from 30.0 kBtu/ft² (2022) to 49.0 kBtu/ft² (2024), an 63% increase. Reported emissions went from 1,119 tCO₂e to 647 tCO₂e over the same span (down 42%).
What does an ENERGY STAR score of 95 mean?
ENERGY STAR scores run from 1 to 100 and are computed by the EPA's Portfolio Manager as a percentile against similar buildings nationwide, adjusted for climate, size and use: a score of 95 means the building performs better than about 95% of its national peers. BuildingCensus bands the score into report-card grades; 95 falls in band A — high performer (85–100). Scores of 75 or higher meet the threshold for ENERGY STAR certification; certification itself is a separate, verified application that the disclosure does not record. In New York City, 43% of scored buildings are at 75 or above.
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. 320 W 66th St's 49.0 kBtu/ft² across 150,714 sq ft works out to about 7.4 billion Btu (2,164 MWh-equivalent) in 2024. Its source EUI of 93.1 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 944,976 kWh of electricity for the year.
Which law requires 320 W 66th St to report its energy use?
320 W 66th St 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:20637989:2024). 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
- 36 East 31st Street· 150,686 sq ft · score 90 (A)
- 36 East 31st Street· 150,686 sq ft · score 95 (A)
- The Bar Building Condominium - 36 West 44th St· 150,651 sq ft
- 830 3rd Ave, Manhattan· 150,638 sq ft · EUI 53.1 kBtu/ft²
- Jennie Realty - Combined· 150,570 sq ft · score 86 (A)
- 220 East 23rd Street· 150,355 sq ft · EUI 50.7 kBtu/ft²
- 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 320 W 66th St's energy grade?
320 W 66th St scores 95 out of 100 on ENERGY STAR — band A, high performer (85–100) — in its 2024 New York City disclosure. Scores are national percentiles against similar buildings; 75+ qualifies for ENERGY STAR certification.
How much energy does 320 W 66th St use?
Its 2024 site energy-use intensity was 49.0 kBtu/ft² (93.1 kBtu/ft² source) across 150,714 sq ft, including 944,976 kWh of electricity.
What are 320 W 66th St's carbon emissions?
320 W 66th St reported 647 tCO₂e of greenhouse-gas emissions (4.3 kgCO₂e/ft²) for 2024.
Where is 320 W 66th St?
320 W 66th St is in New York City, New York 10023. Its coordinates are 40.77616, -73.98759 (latitude, longitude), as published in the Energy and Water Data Disclosure file.
How big is 320 W 66th St and when was it built?
320 W 66th St has 150,714 sq ft of gross floor area, as reported in its 2024 disclosure. The disclosure lists 1984 as its year built. It is classed as office.
Is 320 W 66th St 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, “320 W 66th St, New York City, New York — 2024 benchmarking disclosure”, https://buildingcensus.com/buildings/new-york-city/320-w-66th-st-a4a95767 (data as of October 2, 2026).