DEPM 1848 - 45 East 66th Street
Multifamily Housing in New York City, NY · 45 East 66 Street · 10065
At a glance
DEPM 1848 - 45 East 66th Street is a 87,306-square-foot multifamily housing building at 45 East 66 Street in New York City, New York, built in 1907. In its 2024 New York City benchmarking disclosure it reported an ENERGY STAR score of 86 out of 100 (grade A), a site energy-use intensity of 62.2 kBtu/ft² and 377 tCO₂e of greenhouse-gas emissions. That score is higher than 71% 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 | 86 (band A) |
| Site EUI | 62.2 kBtu/ft² |
| Source EUI | 94.1 kBtu/ft² |
| GHG emissions | 377 tCO₂e |
| GHG intensity | 4.3 kgCO₂e/ft² |
| Electricity | 420,943 kWh |
| Natural gas | 39,903 therms |
| Gross floor area | 87,306 sq ft |
| Source record | nyc:20662118:2024 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2024latest | 86 | +2 | 62.2 kBtu/ft² | 377 tCO₂e |
| 2023 | 84 | -10 | 61.1 kBtu/ft² | 361 tCO₂e |
| 2022 | 94 | 51.2 kBtu/ft² | 285 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
- 45 East 66 Street
- City
- New York City
- State
- New York
- ZIP
- 10065
- Coordinates
- 40.76780, -73.96779
Within ~1 km
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See also: most efficient in New York City · biggest emitters
How does DEPM 1848 - 45 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. DEPM 1848 - 45 East 66th Street's ENERGY STAR score of 86 compares with an average of 63 across the 22,829 that report a score; it scores higher than 71% of them and lower than 28%. Its site EUI of 62.2 kBtu/ft² is about 17% below the average of 74.9 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 17% below the group average of 5.2 kgCO₂e/ft².
At 87,306 sq ft, it is about 14% below the average floor area of 100,951 sq ft for those buildings. It was built in 1907, 45 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 DEPM 1848 - 45 East 66th Street's energy performance changed over time?
BuildingCensus holds 3 New York City disclosures for DEPM 1848 - 45 East 66th Street, covering report years 2022–2024. Its ENERGY STAR score went from 94 in 2022 to 86 in 2024 (-8 points); its best year on file was 2022, at 94. Site EUI moved from 51.2 kBtu/ft² (2022) to 62.2 kBtu/ft² (2024), an 21% increase. Reported emissions went from 285 tCO₂e to 377 tCO₂e over the same span (up 32%).
What does an ENERGY STAR score of 86 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 86 means the building performs better than about 86% of its national peers. BuildingCensus bands the score into report-card grades; 86 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. DEPM 1848 - 45 East 66th Street's 62.2 kBtu/ft² across 87,306 sq ft works out to about 5.4 billion Btu (1,592 MWh-equivalent) in 2024. Its source EUI of 94.1 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 420,943 kWh of electricity and 39,903 therms of natural gas for the year.
Which law requires DEPM 1848 - 45 East 66th Street to report its energy use?
DEPM 1848 - 45 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:20662118:2024). 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
- Midway Hotel, 216 West 100th Street· 87,305 sq ft · score 96 (A)
- 3311 Shore Pkwy Realty· 87,300 sq ft · score 68 (C)
- Dafnonas Estates LTD: 400 Ave U· 87,285 sq ft · score 67 (C)
- Norcor: 43-42 45th· 87,280 sq ft · score 100 (A)
- 99 Commercial St· 87,277 sq ft · score 85 (A)
- 139-10 28th Road· 87,259 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 DEPM 1848 - 45 East 66th Street's energy grade?
DEPM 1848 - 45 East 66th Street scores 86 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 DEPM 1848 - 45 East 66th Street use?
Its 2024 site energy-use intensity was 62.2 kBtu/ft² (94.1 kBtu/ft² source) across 87,306 sq ft, including 420,943 kWh of electricity and 39,903 therms of natural gas.
What are DEPM 1848 - 45 East 66th Street's carbon emissions?
DEPM 1848 - 45 East 66th Street reported 377 tCO₂e of greenhouse-gas emissions (4.3 kgCO₂e/ft²) for 2024.
Where is DEPM 1848 - 45 East 66th Street?
DEPM 1848 - 45 East 66th Street is at 45 East 66 Street, in New York City, New York 10065. Its coordinates are 40.76780, -73.96779 (latitude, longitude), as published in the Energy and Water Data Disclosure file.
How big is DEPM 1848 - 45 East 66th Street and when was it built?
DEPM 1848 - 45 East 66th Street has 87,306 sq ft of gross floor area, as reported in its 2024 disclosure. The disclosure lists 1907 as its year built. It is classed as multifamily housing.
Is DEPM 1848 - 45 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).
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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, “DEPM 1848 - 45 East 66th Street, New York City, New York — 2024 benchmarking disclosure”, https://buildingcensus.com/buildings/new-york-city/depm-1848-45-east-66th-street-75f88822 (data as of October 2, 2026).