45-42 41st Street
Multifamily Housing in New York City, NY · 11104
At a glance
45-42 41st Street is a 69,348-square-foot multifamily housing building in New York City, New York, built in 1939. In its 2024 New York City benchmarking disclosure it reported an ENERGY STAR score of 61 out of 100 (grade C), a site energy-use intensity of 80.9 kBtu/ft² and 340 tCO₂e of greenhouse-gas emissions. That score is higher than 42% 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 | 61 (band C) |
| Site EUI | 80.9 kBtu/ft² |
| Source EUI | 101.9 kBtu/ft² |
| GHG emissions | 340 tCO₂e |
| GHG intensity | 4.9 kgCO₂e/ft² |
| Electricity | 196,626 kWh |
| Natural gas | 49,422 therms |
| Water use | 2,045 kgal |
| Gross floor area | 69,348 sq ft |
| Source record | nyc:2797981:2024 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2024latest | 61 | -8 | 80.9 kBtu/ft² | 340 tCO₂e |
| 2023 | 69 | -1 | 72.2 kBtu/ft² | 304 tCO₂e |
| 2022 | 70 | 75.4 kBtu/ft² | 303 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
- 45-42 41st Street
- City
- New York City
- State
- New York
- ZIP
- 11104
- Coordinates
- 40.74271, -73.92355
Within ~1 km
Nearby benchmarked buildings
- 43-10 48th Avenue - 36322score —
Multifamily Housing · 450,492 sq ft
- 47-25 34th Streetscore —
Office · 322,290 sq ft
K-12 School · 317,000 sq ft
- 47-25 34th Streetscore —
Non-Refrigerated Warehouse · 273,360 sq ft
- MRA HUBscore 96
Office · 272,562 sq ft
- SUPERIOR: 41-15 45th Streetscore 100
Multifamily Housing · 267,500 sq ft
See also: most efficient in New York City · biggest emitters
How does 45-42 41st 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. 45-42 41st Street's ENERGY STAR score of 61 compares with an average of 63 across the 22,829 that report a score; it scores higher than 42% of them and lower than 58%. Its site EUI of 80.9 kBtu/ft² is roughly in line with the average of 74.9 kBtu/ft². Its emissions intensity of 4.9 kgCO₂e/ft² is roughly in line with the group average of 5.2 kgCO₂e/ft².
At 69,348 sq ft, it is about 31% below the average floor area of 100,951 sq ft for those buildings. It was built in 1939, 13 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 45-42 41st Street's energy performance changed over time?
BuildingCensus holds 3 New York City disclosures for 45-42 41st Street, covering report years 2022–2024. Its ENERGY STAR score went from 70 in 2022 to 61 in 2024 (-9 points); its best year on file was 2022, at 70. Site EUI moved from 75.4 kBtu/ft² (2022) to 80.9 kBtu/ft² (2024), an 7% increase. Reported emissions went from 303 tCO₂e to 340 tCO₂e over the same span (up 12%).
What does an ENERGY STAR score of 61 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 61 means the building performs better than about 61% of its national peers. BuildingCensus bands the score into report-card grades; 61 falls in band C — below median (55–69). It sits 14 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. 45-42 41st Street's 80.9 kBtu/ft² across 69,348 sq ft works out to about 5.6 billion Btu (1,644 MWh-equivalent) in 2024. Its source EUI of 101.9 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 196,626 kWh of electricity, 49,422 therms of natural gas and 2,045 thousand gallons of water for the year.
Which law requires 45-42 41st Street to report its energy use?
45-42 41st 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:2797981:2024). 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
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- 387 East Mosholu Pkway N· 69,336 sq ft · score 100 (A)
- 45 Holding Corp· 69,336 sq ft · score 81 (B)
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- 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 45-42 41st Street's energy grade?
45-42 41st Street scores 61 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 45-42 41st Street use?
Its 2024 site energy-use intensity was 80.9 kBtu/ft² (101.9 kBtu/ft² source) across 69,348 sq ft, including 196,626 kWh of electricity and 49,422 therms of natural gas.
What are 45-42 41st Street's carbon emissions?
45-42 41st Street reported 340 tCO₂e of greenhouse-gas emissions (4.9 kgCO₂e/ft²) for 2024.
Where is 45-42 41st Street?
45-42 41st Street is in New York City, New York 11104. Its coordinates are 40.74271, -73.92355 (latitude, longitude), as published in the Energy and Water Data Disclosure file.
How big is 45-42 41st Street and when was it built?
45-42 41st Street has 69,348 sq ft of gross floor area, as reported in its 2024 disclosure. The disclosure lists 1939 as its year built. It is classed as multifamily housing.
Is 45-42 41st 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, “45-42 41st Street, New York City, New York — 2024 benchmarking disclosure”, https://buildingcensus.com/buildings/new-york-city/45-42-41st-street-3aa39495 (data as of October 2, 2026).