661 Lexington Avenue
Office in New York City, NY · 10022
At a glance
661 Lexington Avenue is a 35,408-square-foot office building in New York City, New York, built in 1902. In its 2024 New York City benchmarking disclosure it reported an ENERGY STAR score of 45 out of 100 (grade D), a site energy-use intensity of 130.9 kBtu/ft² and 406 tCO₂e of greenhouse-gas emissions. That score is higher than 14% 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 | 45 (band D) |
| Site EUI | 130.9 kBtu/ft² |
| Source EUI | 258.7 kBtu/ft² |
| GHG emissions | 406 tCO₂e |
| GHG intensity | 11.5 kgCO₂e/ft² |
| Electricity | 693,625 kWh |
| Natural gas | 12,702 therms |
| Gross floor area | 35,408 sq ft |
| Source record | nyc:6696673:2024 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2024latest | 45 | +44 | 130.9 kBtu/ft² | 406 tCO₂e |
| 2023 | 1 | -54 | 435.8 kBtu/ft² | 1,586 tCO₂e |
| 2022 | 55 | 115.1 kBtu/ft² | 296 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.
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Location
- Address
- 661 Lexington Avenue
- City
- New York City
- State
- New York
- ZIP
- 10022
- Coordinates
- 40.75981, -73.96993
Within ~1 km
Nearby benchmarked buildings
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- 277 Park Avenuescore 64
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- 345 Park Ave LPscore 47
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- 277 Park Avenuescore 55
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See also: most efficient in New York City · biggest emitters
How does 661 Lexington 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. 661 Lexington Avenue's ENERGY STAR score of 45 compares with an average of 72 across the 2,519 that report a score; it scores higher than 14% of them and lower than 86%. Its site EUI of 130.9 kBtu/ft² is about twice the average of 64.5 kBtu/ft² — it uses more energy per square foot than the typical building in that group. Its emissions intensity of 11.5 kgCO₂e/ft² is about twice the group average of 5.8 kgCO₂e/ft².
At 35,408 sq ft, it is about 83% below the average floor area of 205,440 sq ft for those buildings. It was built in 1902, 38 years earlier 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 661 Lexington Avenue's energy performance changed over time?
BuildingCensus holds 3 New York City disclosures for 661 Lexington Avenue, covering report years 2022–2024. Its ENERGY STAR score went from 55 in 2022 to 45 in 2024 (-10 points); its best year on file was 2022, at 55. Site EUI moved from 115.1 kBtu/ft² (2022) to 130.9 kBtu/ft² (2024), an 14% increase. Reported emissions went from 296 tCO₂e to 406 tCO₂e over the same span (up 37%).
What does an ENERGY STAR score of 45 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 45 means the building performs better than about 45% of its national peers. BuildingCensus bands the score into report-card grades; 45 falls in band D — lowest band (1–54). It sits 30 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. 661 Lexington Avenue's 130.9 kBtu/ft² across 35,408 sq ft works out to about 4.6 billion Btu (1,358 MWh-equivalent) in 2024. Its source EUI of 258.7 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 693,625 kWh of electricity and 12,702 therms of natural gas for the year.
Which law requires 661 Lexington Avenue to report its energy use?
661 Lexington 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:6696673:2024). 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
- A&R Properties Group: 47-01 Queens Blvd· 35,395 sq ft · score 41 (D)
- 177 Lafayette Street· 35,287 sq ft · score 67 (C)
- 177 Lafayette Street· 35,287 sq ft · score 48 (D)
- Island House 545 Main - 1089340· 35,165 sq ft
- 263 West 34th Street· 35,111 sq ft · EUI 72.4 kBtu/ft²
- 263 West 34th St· 35,111 sq ft · score 11 (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 661 Lexington Avenue's energy grade?
661 Lexington Avenue scores 45 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 661 Lexington Avenue use?
Its 2024 site energy-use intensity was 130.9 kBtu/ft² (258.7 kBtu/ft² source) across 35,408 sq ft, including 693,625 kWh of electricity and 12,702 therms of natural gas.
What are 661 Lexington Avenue's carbon emissions?
661 Lexington Avenue reported 406 tCO₂e of greenhouse-gas emissions (11.5 kgCO₂e/ft²) for 2024.
Where is 661 Lexington Avenue?
661 Lexington Avenue is in New York City, New York 10022. Its coordinates are 40.75981, -73.96993 (latitude, longitude), as published in the Energy and Water Data Disclosure file.
How big is 661 Lexington Avenue and when was it built?
661 Lexington Avenue has 35,408 sq ft of gross floor area, as reported in its 2024 disclosure. The disclosure lists 1902 as its year built. It is classed as office.
Is 661 Lexington 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).
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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, “661 Lexington Avenue, New York City, New York — 2024 benchmarking disclosure”, https://buildingcensus.com/buildings/new-york-city/661-lexington-avenue-522342a5 (data as of October 2, 2026).