3145 Rochambeau Ave
Multifamily Housing in New York City, NY · 10467
At a glance
3145 Rochambeau Ave is a 47,000-square-foot multifamily housing building in New York City, New York, built in 1928. In its 2024 New York City benchmarking disclosure it reported an ENERGY STAR score of 48 out of 100 (grade D), a site energy-use intensity of 85.9 kBtu/ft² and 311 tCO₂e of greenhouse-gas emissions. That score is higher than 30% 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 | 48 (band D) |
| Site EUI | 85.9 kBtu/ft² |
| Source EUI | 107.3 kBtu/ft² |
| GHG emissions | 311 tCO₂e |
| GHG intensity | 6.6 kgCO₂e/ft² |
| Electricity | 154,682 kWh |
| Natural gas | 4,871 therms |
| Gross floor area | 47,000 sq ft |
| Source record | nyc:6275324:2024 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2024latest | 48 | -26 | 85.9 kBtu/ft² | 311 tCO₂e |
| 2023 | 74 | -26 | 66.7 kBtu/ft² | 243 tCO₂e |
| 2022 | 100 | 32.0 kBtu/ft² | 96 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
- 3145 Rochambeau Ave
- City
- New York City
- State
- New York
- ZIP
- 10467
- Coordinates
- 40.87443, -73.88037
Within ~1 km
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See also: most efficient in New York City · biggest emitters
How does 3145 Rochambeau Ave 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. 3145 Rochambeau Ave's ENERGY STAR score of 48 compares with an average of 63 across the 22,829 that report a score; it scores higher than 30% of them and lower than 69%. Its site EUI of 85.9 kBtu/ft² is about 15% 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 6.6 kgCO₂e/ft² is about 27% above the group average of 5.2 kgCO₂e/ft².
At 47,000 sq ft, it is about half of the average floor area of 100,951 sq ft for those buildings. It was built in 1928, 24 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 3145 Rochambeau Ave's energy performance changed over time?
BuildingCensus holds 3 New York City disclosures for 3145 Rochambeau Ave, covering report years 2022–2024. Its ENERGY STAR score went from 100 in 2022 to 48 in 2024 (-52 points); its best year on file was 2022, at 100. Site EUI moved from 32.0 kBtu/ft² (2022) to 85.9 kBtu/ft² (2024), an 168% increase. Reported emissions went from 96 tCO₂e to 311 tCO₂e over the same span (up 223%).
What does an ENERGY STAR score of 48 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 48 means the building performs better than about 48% of its national peers. BuildingCensus bands the score into report-card grades; 48 falls in band D — lowest band (1–54). It sits 27 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. 3145 Rochambeau Ave's 85.9 kBtu/ft² across 47,000 sq ft works out to about 4 billion Btu (1,183 MWh-equivalent) in 2024. Its source EUI of 107.3 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 154,682 kWh of electricity and 4,871 therms of natural gas for the year.
Which law requires 3145 Rochambeau Ave to report its energy use?
3145 Rochambeau Ave 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:6275324:2024). 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.
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- Multifamily Housing buildings in New York City· 33,022 benchmarked
- All New York City benchmarked buildings· Local Law 84 (LL84)
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Frequently asked questions
What is 3145 Rochambeau Ave's energy grade?
3145 Rochambeau Ave scores 48 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 3145 Rochambeau Ave use?
Its 2024 site energy-use intensity was 85.9 kBtu/ft² (107.3 kBtu/ft² source) across 47,000 sq ft, including 154,682 kWh of electricity and 4,871 therms of natural gas.
What are 3145 Rochambeau Ave's carbon emissions?
3145 Rochambeau Ave reported 311 tCO₂e of greenhouse-gas emissions (6.6 kgCO₂e/ft²) for 2024.
Where is 3145 Rochambeau Ave?
3145 Rochambeau Ave is in New York City, New York 10467. Its coordinates are 40.87443, -73.88037 (latitude, longitude), as published in the Energy and Water Data Disclosure file.
How big is 3145 Rochambeau Ave and when was it built?
3145 Rochambeau Ave has 47,000 sq ft of gross floor area, as reported in its 2024 disclosure. The disclosure lists 1928 as its year built. It is classed as multifamily housing.
Is 3145 Rochambeau Ave 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, “3145 Rochambeau Ave, New York City, New York — 2024 benchmarking disclosure”, https://buildingcensus.com/buildings/new-york-city/3145-rochambeau-ave-bb89aea9 (data as of October 2, 2026).