21 Bennett
Multifamily Housing in New York City, NY · 21 Bennett Av. · 10033
At a glance
21 Bennett is a 38,670-square-foot multifamily housing building at 21 Bennett Av. in New York City, New York, built in 1920. In its 2024 New York City benchmarking disclosure it reported an ENERGY STAR score of 100 out of 100 (grade A), a site energy-use intensity of 41.7 kBtu/ft² and 115 tCO₂e of greenhouse-gas emissions. That score is higher than 90% 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 | 100 (band A) |
| Site EUI | 41.7 kBtu/ft² |
| Source EUI | 65.0 kBtu/ft² |
| GHG emissions | 115 tCO₂e |
| GHG intensity | 3.0 kgCO₂e/ft² |
| Electricity | 137,685 kWh |
| Natural gas | 11,427 therms |
| Water use | 2,423 kgal |
| Gross floor area | 38,670 sq ft |
| Source record | nyc:6216796:2024 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2024latest | 100 | ±0 | 41.7 kBtu/ft² | 115 tCO₂e |
| 2023 | 100 | +5 | 17.2 kBtu/ft² | 61 tCO₂e |
| 2022 | 95 | 69.3 kBtu/ft² | 157 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
- 21 Bennett Av.
- City
- New York City
- State
- New York
- ZIP
- 10033
- Coordinates
- 40.85104, -73.93635
Within ~1 km
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- RACHEL BRIDGE BBL 1-02153-0001score 98
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See also: most efficient in New York City · biggest emitters
How does 21 Bennett 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. 21 Bennett's ENERGY STAR score of 100 compares with an average of 63 across the 22,829 that report a score; it scores higher than 90% of them. Its site EUI of 41.7 kBtu/ft² is about 44% 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 3.0 kgCO₂e/ft² is about 43% below the group average of 5.2 kgCO₂e/ft².
At 38,670 sq ft, it is about 62% below the average floor area of 100,951 sq ft for those buildings. It was built in 1920, 32 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 21 Bennett's energy performance changed over time?
BuildingCensus holds 3 New York City disclosures for 21 Bennett, covering report years 2022–2024. Its ENERGY STAR score went from 95 in 2022 to 100 in 2024 (+5 points); its best year on file was 2023, at 100. Site EUI moved from 69.3 kBtu/ft² (2022) to 41.7 kBtu/ft² (2024), a 40% decrease. Reported emissions went from 157 tCO₂e to 115 tCO₂e over the same span (down 27%).
What does an ENERGY STAR score of 100 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: 100 is the top of the scale. BuildingCensus bands the score into report-card grades; 100 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. 21 Bennett's 41.7 kBtu/ft² across 38,670 sq ft works out to about 1.6 billion Btu (473 MWh-equivalent) in 2024. Its source EUI of 65.0 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 137,685 kWh of electricity, 11,427 therms of natural gas and 2,423 thousand gallons of water for the year.
Which law requires 21 Bennett to report its energy use?
21 Bennett 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:6216796:2024). 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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- 136 East Broadway· 38,660 sq ft · score 52 (D)
- Sammy Cortes:2758 OCEAN AVENUE· 38,659 sq ft · score 91 (A)
- 2758 Ocean Avenue Condominium· 38,659 sq ft · score 98 (A)
- 133-20 Avery Avenue· 38,652 sq ft · score 84 (B)
- 40 East 19th Street· 38,651 sq ft · EUI 34.6 kBtu/ft²
- 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 21 Bennett's energy grade?
21 Bennett scores 100 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 21 Bennett use?
Its 2024 site energy-use intensity was 41.7 kBtu/ft² (65.0 kBtu/ft² source) across 38,670 sq ft, including 137,685 kWh of electricity and 11,427 therms of natural gas.
What are 21 Bennett's carbon emissions?
21 Bennett reported 115 tCO₂e of greenhouse-gas emissions (3.0 kgCO₂e/ft²) for 2024.
Where is 21 Bennett?
21 Bennett is at 21 Bennett Av., in New York City, New York 10033. Its coordinates are 40.85104, -73.93635 (latitude, longitude), as published in the Energy and Water Data Disclosure file.
How big is 21 Bennett and when was it built?
21 Bennett has 38,670 sq ft of gross floor area, as reported in its 2024 disclosure. The disclosure lists 1920 as its year built. It is classed as multifamily housing.
Is 21 Bennett 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, “21 Bennett, New York City, New York — 2024 benchmarking disclosure”, https://buildingcensus.com/buildings/new-york-city/21-bennett-1020387b (data as of October 2, 2026).