139 East 66th Street
Multifamily Housing in New York City, NY · 10065
At a glance
139 East 66th Street is a 44,528-square-foot multifamily housing building in New York City, New York, built in 1918. In its 2024 New York City benchmarking disclosure it reported an ENERGY STAR score of 57 out of 100 (grade C), a site energy-use intensity of 73.1 kBtu/ft² and 209 tCO₂e of greenhouse-gas emissions. That score is higher than 38% 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 | 57 (band C) |
| Site EUI | 73.1 kBtu/ft² |
| Source EUI | 100.0 kBtu/ft² |
| GHG emissions | 209 tCO₂e |
| GHG intensity | 4.7 kgCO₂e/ft² |
| Electricity | 173,491 kWh |
| Natural gas | 26,615 therms |
| Water use | 1,257 kgal |
| Gross floor area | 44,528 sq ft |
| Source record | nyc:6414508:2024 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2024latest | 57 | +21 | 73.1 kBtu/ft² | 209 tCO₂e |
| 2023 | 36 | -6 | 85.0 kBtu/ft² | 209 tCO₂e |
| 2022 | 42 | 89.4 kBtu/ft² | 203 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
- 139 East 66th Street
- City
- New York City
- State
- New York
- ZIP
- 10065
- Coordinates
- 40.76646, -73.96461
Within ~1 km
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How does 139 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. 139 East 66th Street's ENERGY STAR score of 57 compares with an average of 63 across the 22,829 that report a score; it scores higher than 38% of them and lower than 61%. Its site EUI of 73.1 kBtu/ft² is roughly in line with 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 4.7 kgCO₂e/ft² is roughly in line with the group average of 5.2 kgCO₂e/ft².
At 44,528 sq ft, it is about 56% below the average floor area of 100,951 sq ft for those buildings. It was built in 1918, 34 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 139 East 66th Street's energy performance changed over time?
BuildingCensus holds 3 New York City disclosures for 139 East 66th Street, covering report years 2022–2024. Its ENERGY STAR score went from 42 in 2022 to 57 in 2024 (+15 points). Site EUI moved from 89.4 kBtu/ft² (2022) to 73.1 kBtu/ft² (2024), a 18% decrease. Reported emissions went from 203 tCO₂e to 209 tCO₂e over the same span (up 3%).
What does an ENERGY STAR score of 57 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 57 means the building performs better than about 57% of its national peers. BuildingCensus bands the score into report-card grades; 57 falls in band C — below median (55–69). It sits 18 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. 139 East 66th Street's 73.1 kBtu/ft² across 44,528 sq ft works out to about 3.3 billion Btu (954 MWh-equivalent) in 2024. Its source EUI of 100.0 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 173,491 kWh of electricity, 26,615 therms of natural gas and 1,257 thousand gallons of water for the year.
Which law requires 139 East 66th Street to report its energy use?
139 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:6414508:2024). 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
- JRC: 140 East 7th St· 44,512 sq ft · score 97 (A)
- Baysun Property Management - 4102 8th ave· 44,504 sq ft · score 100 (A)
- 1090 Croes Ave· 44,500 sq ft
- 902 Jennings Street· 44,498 sq ft · score 74 (B)
- 902 Jennings Street· 44,498 sq ft · score 69 (C)
- Eastern Estates, LLC· 44,485 sq ft · score 46 (D)
- 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 139 East 66th Street's energy grade?
139 East 66th Street scores 57 out of 100 on ENERGY STAR — band C, below median (55–69) — in its 2024 New York City disclosure. Scores are national percentiles against similar buildings; 75+ qualifies for ENERGY STAR certification.
How much energy does 139 East 66th Street use?
Its 2024 site energy-use intensity was 73.1 kBtu/ft² (100.0 kBtu/ft² source) across 44,528 sq ft, including 173,491 kWh of electricity and 26,615 therms of natural gas.
What are 139 East 66th Street's carbon emissions?
139 East 66th Street reported 209 tCO₂e of greenhouse-gas emissions (4.7 kgCO₂e/ft²) for 2024.
Where is 139 East 66th Street?
139 East 66th Street is in New York City, New York 10065. Its coordinates are 40.76646, -73.96461 (latitude, longitude), as published in the Energy and Water Data Disclosure file.
How big is 139 East 66th Street and when was it built?
139 East 66th Street has 44,528 sq ft of gross floor area, as reported in its 2024 disclosure. The disclosure lists 1918 as its year built. It is classed as multifamily housing.
Is 139 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, “139 East 66th Street, New York City, New York — 2024 benchmarking disclosure”, https://buildingcensus.com/buildings/new-york-city/139-east-66th-street-63a01172 (data as of October 2, 2026).