SW - 371 2nd Ave
Multifamily Housing in New York City, NY · 241 East 21st Street · 10016
At a glance
SW - 371 2nd Ave is a 77,640-square-foot multifamily housing building at 241 East 21st Street in New York City, New York, built in 1930. In its 2024 New York City benchmarking disclosure it reported an ENERGY STAR score of 63 out of 100 (grade C), a site energy-use intensity of 75.5 kBtu/ft² and 389 tCO₂e of greenhouse-gas emissions. That score is higher than 43% 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 | 63 (band C) |
| Site EUI | 75.5 kBtu/ft² |
| Source EUI | 107.3 kBtu/ft² |
| GHG emissions | 389 tCO₂e |
| GHG intensity | 5.0 kgCO₂e/ft² |
| Electricity | 364,757 kWh |
| Natural gas | 46,181 therms |
| Water use | 5,388 kgal |
| Gross floor area | 77,640 sq ft |
| Source record | nyc:2668699:2024 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2024latest | 63 | -6 | 75.5 kBtu/ft² | 389 tCO₂e |
| 2023 | 69 | +6 | 70.2 kBtu/ft² | 358 tCO₂e |
| 2022 | 63 | 80.9 kBtu/ft² | 373 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
- 241 East 21st Street
- City
- New York City
- State
- New York
- ZIP
- 10016
- Coordinates
- 40.73713, -73.98307
Within ~1 km
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See also: most efficient in New York City · biggest emitters
How does SW - 371 2nd 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. SW - 371 2nd Ave's ENERGY STAR score of 63 compares with an average of 63 across the 22,829 that report a score; it scores higher than 43% of them and lower than 56%. Its site EUI of 75.5 kBtu/ft² is roughly in line with the average of 74.9 kBtu/ft². Its emissions intensity of 5.0 kgCO₂e/ft² is roughly in line with the group average of 5.2 kgCO₂e/ft².
At 77,640 sq ft, it is about 23% below the average floor area of 100,951 sq ft for those buildings. It was built in 1930, 22 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 SW - 371 2nd Ave's energy performance changed over time?
BuildingCensus holds 3 New York City disclosures for SW - 371 2nd Ave, covering report years 2022–2024. Its ENERGY STAR score was 63 in both 2022 and 2024. Site EUI moved from 80.9 kBtu/ft² (2022) to 75.5 kBtu/ft² (2024), a 7% decrease. Reported emissions went from 373 tCO₂e to 389 tCO₂e over the same span (up 4%).
What does an ENERGY STAR score of 63 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 63 means the building performs better than about 63% of its national peers. BuildingCensus bands the score into report-card grades; 63 falls in band C — below median (55–69). It sits 12 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. SW - 371 2nd Ave's 75.5 kBtu/ft² across 77,640 sq ft works out to about 5.9 billion Btu (1,718 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 364,757 kWh of electricity, 46,181 therms of natural gas and 5,388 thousand gallons of water for the year.
Which law requires SW - 371 2nd Ave to report its energy use?
SW - 371 2nd 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:2668699:2024). 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
- 202-214 WEST 85TH STREET· 77,620 sq ft · score 100 (A)
- 202-214 West 85th Owners Corp.· 77,620 sq ft · score 100 (A)
- (6226) - Benson Avenue Owners· 77,608 sq ft · score 83 (B)
- Jade Condominium (16 West 19 Street)· 77,582 sq ft · score 37 (D)
- 555 Ovington Inc.· 77,576 sq ft · score 27 (D)
- Zelman:2555 E 12th St· 77,556 sq ft · score 27 (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 SW - 371 2nd Ave's energy grade?
SW - 371 2nd Ave scores 63 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 SW - 371 2nd Ave use?
Its 2024 site energy-use intensity was 75.5 kBtu/ft² (107.3 kBtu/ft² source) across 77,640 sq ft, including 364,757 kWh of electricity and 46,181 therms of natural gas.
What are SW - 371 2nd Ave's carbon emissions?
SW - 371 2nd Ave reported 389 tCO₂e of greenhouse-gas emissions (5.0 kgCO₂e/ft²) for 2024.
Where is SW - 371 2nd Ave?
SW - 371 2nd Ave is at 241 East 21st Street, in New York City, New York 10016. Its coordinates are 40.73713, -73.98307 (latitude, longitude), as published in the Energy and Water Data Disclosure file.
How big is SW - 371 2nd Ave and when was it built?
SW - 371 2nd Ave has 77,640 sq ft of gross floor area, as reported in its 2024 disclosure. The disclosure lists 1930 as its year built. It is classed as multifamily housing.
Is SW - 371 2nd 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, “SW - 371 2nd Ave, New York City, New York — 2024 benchmarking disclosure”, https://buildingcensus.com/buildings/new-york-city/sw-371-2nd-ave-6c0372ac (data as of October 2, 2026).