1 East 66th Street
Multifamily Housing in New York City, NY · 1 E. 66TH ST. · 10065
At a glance
1 East 66th Street is a 166,525-square-foot multifamily housing building at 1 E. 66TH ST. in New York City, New York, built in 1949. In its 2024 New York City benchmarking disclosure it reported an ENERGY STAR score of 9 out of 100 (grade D), a site energy-use intensity of 82.8 kBtu/ft² and 921 tCO₂e of greenhouse-gas emissions. That score is higher than 7% of the 22,829 scored multifamily housing buildings in New York City.
Local Law 84 (LL84) · reporting year 2024
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | 9 (band D) |
| Site EUI | 82.8 kBtu/ft² |
| Source EUI | 118.9 kBtu/ft² |
| GHG emissions | 921 tCO₂e |
| GHG intensity | 5.5 kgCO₂e/ft² |
| Electricity | 892,585 kWh |
| Natural gas | 107,351 therms |
| Gross floor area | 166,525 sq ft |
| Source record | nyc:16096437:2024 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2024latest | 9 | -11 | 82.8 kBtu/ft² | 921 tCO₂e |
| 2023 | 20 | -5 | 68.9 kBtu/ft² | 772 tCO₂e |
| 2022 | 25 | 72.3 kBtu/ft² | 736 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
- 1 E. 66TH ST.
- City
- New York City
- State
- New York
- ZIP
- 10065
- Coordinates
- 40.76855, -73.96958
Within ~1 km
Nearby benchmarked buildings
Office · 1,844,165 sq ft
- 9 W 57th Streetscore —
Office · 1,617,773 sq ft
- 9 W 57 & 4 W 58score —
Office · 1,482,596 sq ft
Mixed Use Property · 1,402,032 sq ft
- One Beacon Courtscore —
Office · 1,400,678 sq ft
Mixed Use Property · 1,052,597 sq ft
See also: most efficient in New York City · biggest emitters
How does 1 East 66th Street compare with other multifamily housing buildings in New York City?
The latest disclosures cover 33,022 multifamily housing buildings in New York City, out of 48,310 buildings citywide. 1 East 66th Street's ENERGY STAR score of 9 compares with an average of 63 across the 22,829 that report a score; it scores higher than 7% of them and lower than 93%. Its site EUI of 82.8 kBtu/ft² is about 11% above the average of 74.9 kBtu/ft² — it uses more energy per square foot than the typical building in that group. Its emissions intensity of 5.5 kgCO₂e/ft² is roughly in line with the group average of 5.2 kgCO₂e/ft².
At 166,525 sq ft, it is about 65% above the average floor area of 100,951 sq ft for those buildings. It was built in 1949, 3 years earlier than the group's average year built (1952). Across all 24 jurisdictions BuildingCensus covers, the 59,945 multifamily housing buildings average an ENERGY STAR score of 70 and a site EUI of 59.0 kBtu/ft².
How has 1 East 66th Street's energy performance changed over time?
BuildingCensus holds 3 New York City disclosures for 1 East 66th Street, covering report years 2022–2024. Its ENERGY STAR score went from 25 in 2022 to 9 in 2024 (-16 points); its best year on file was 2022, at 25. Site EUI moved from 72.3 kBtu/ft² (2022) to 82.8 kBtu/ft² (2024), an 15% increase. Reported emissions went from 736 tCO₂e to 921 tCO₂e over the same span (up 25%).
What does an ENERGY STAR score of 9 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 9 means the building performs better than about 9% of its national peers. BuildingCensus bands the score into report-card grades; 9 falls in band D — lowest band (1–54). It sits 66 points below 75, the threshold for ENERGY STAR certification. 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. 1 East 66th Street's 82.8 kBtu/ft² across 166,525 sq ft works out to about 13.8 billion Btu (4,041 MWh-equivalent) in 2024. Its source EUI of 118.9 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 892,585 kWh of electricity and 107,351 therms of natural gas for the year.
Which law requires 1 East 66th Street to report its energy use?
1 East 66th Street 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:16096437:2024). 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 multifamily housing buildings in New York City
- MIDWEST COURT LLC - 410 W 53· 166,518 sq ft · score 40 (D)
- Rockrose - 410 West 53rd Street· 166,518 sq ft · score 57 (C)
- Stellar - 40 Harrison Street· 166,467 sq ft
- Stellar - 366 Greenwich Street· 166,467 sq ft
- Stellar - 312 Greenwich Street· 166,467 sq ft
- Stellar - 334 Greenwich Street· 166,467 sq ft
- Multifamily Housing buildings in New York City· 33,022 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 1 East 66th Street's energy grade?
1 East 66th Street scores 9 out of 100 on ENERGY STAR — band D, lowest band (1–54) — in its 2024 New York City disclosure. Scores are national percentiles against similar buildings; 75+ qualifies for ENERGY STAR certification.
How much energy does 1 East 66th Street use?
Its 2024 site energy-use intensity was 82.8 kBtu/ft² (118.9 kBtu/ft² source) across 166,525 sq ft, including 892,585 kWh of electricity and 107,351 therms of natural gas.
What are 1 East 66th Street's carbon emissions?
1 East 66th Street reported 921 tCO₂e of greenhouse-gas emissions (5.5 kgCO₂e/ft²) for 2024.
Where is 1 East 66th Street?
1 East 66th Street is at 1 E. 66TH ST., in New York City, New York 10065. Its coordinates are 40.76855, -73.96958 (latitude, longitude), as published in the Energy and Water Data Disclosure file.
How big is 1 East 66th Street and when was it built?
1 East 66th Street has 166,525 sq ft of gross floor area, as reported in its 2024 disclosure. The disclosure lists 1949 as its year built. It is classed as multifamily housing.
Is 1 East 66th Street 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, “1 East 66th Street, New York City, New York — 2024 benchmarking disclosure”, https://buildingcensus.com/buildings/new-york-city/1-east-66th-street-cec92fc3 (data as of October 2, 2026).