KM 409 Hewes Street
Multifamily Housing in New York City, NY · 409 Hewes Street · 11211
At a glance
KM 409 Hewes Street is a 27,774-square-foot multifamily housing building in New York City, New York, built in 1915. In its 2023 New York City benchmarking disclosure it reported an ENERGY STAR score of 44 out of 100 (grade D), a site energy-use intensity of 108.7 kBtu/ft² and 188 tCO₂e of greenhouse-gas emissions. That score is higher than 27% of the 22,829 scored multifamily housing buildings in New York City.
Local Law 84 (LL84) · reporting year 2023
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | 44 (band D) |
| Site EUI | 108.7 kBtu/ft² |
| Source EUI | 145.5 kBtu/ft² |
| GHG emissions | 188 tCO₂e |
| GHG intensity | 6.8 kgCO₂e/ft² |
| Electricity | 145,734 kWh |
| Natural gas | 25,228 therms |
| Water use | 2,805 kgal |
| Gross floor area | 27,774 sq ft |
| Source record | nyc:15288693:2023 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2023latest | 44 | -7 | 108.7 kBtu/ft² | 188 tCO₂e |
| 2022 | 51 | 108.2 kBtu/ft² | 176 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
- 409 Hewes Street
- City
- New York City
- State
- New York
- ZIP
- 11211
- Coordinates
- 40.70890, -73.95104
Within ~1 km
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See also: most efficient in New York City · biggest emitters
How does KM 409 Hewes 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. KM 409 Hewes Street's ENERGY STAR score of 44 compares with an average of 63 across the 22,829 that report a score; it scores higher than 27% of them and lower than 72%. Its site EUI of 108.7 kBtu/ft² is about 45% 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 6.8 kgCO₂e/ft² is about 31% above the group average of 5.2 kgCO₂e/ft².
At 27,774 sq ft, it is about 72% below the average floor area of 100,951 sq ft for those buildings. It was built in 1915, 37 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 KM 409 Hewes Street's energy performance changed over time?
BuildingCensus holds 2 New York City disclosures for KM 409 Hewes Street, covering report years 2022–2023. Its ENERGY STAR score went from 51 in 2022 to 44 in 2023 (-7 points); its best year on file was 2022, at 51. Site EUI moved from 108.2 kBtu/ft² (2022) to 108.7 kBtu/ft² (2023), an 0% increase. Reported emissions went from 176 tCO₂e to 188 tCO₂e over the same span (up 7%).
What does an ENERGY STAR score of 44 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 44 means the building performs better than about 44% of its national peers. BuildingCensus bands the score into report-card grades; 44 falls in band D — lowest band (1–54). It sits 31 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. KM 409 Hewes Street's 108.7 kBtu/ft² across 27,774 sq ft works out to about 3 billion Btu (885 MWh-equivalent) in 2023. Its source EUI of 145.5 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 145,734 kWh of electricity, 25,228 therms of natural gas and 2,805 thousand gallons of water for the year.
Which law requires KM 409 Hewes Street to report its energy use?
KM 409 Hewes 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 2023 disclosure (source record nyc:15288693:2023). 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
- New City: 442 West 160th St.· 27,773 sq ft · EUI 102.8 kBtu/ft²
- ZARA - Jamaica Seven - III LLC - 88-18 150 Street· 27,768 sq ft · score 83 (B)
- 2881 NOSTRAND AVENUE· 27,768 sq ft · score 90 (A)
- Rraci: 3318 Steuben Ave.· 27,767 sq ft · score 100 (A)
- BDA REALTY ASSOCIATES LLC· 27,760 sq ft · score 45 (D)
- 500 West 25th Street Condominium· 27,759 sq ft
- 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 KM 409 Hewes Street's energy grade?
KM 409 Hewes Street scores 44 out of 100 on ENERGY STAR — band D, lowest band (1–54) — in its 2023 New York City disclosure. Scores are national percentiles against similar buildings; 75+ qualifies for ENERGY STAR certification.
How much energy does KM 409 Hewes Street use?
Its 2023 site energy-use intensity was 108.7 kBtu/ft² (145.5 kBtu/ft² source) across 27,774 sq ft, including 145,734 kWh of electricity and 25,228 therms of natural gas.
What are KM 409 Hewes Street's carbon emissions?
KM 409 Hewes Street reported 188 tCO₂e of greenhouse-gas emissions (6.8 kgCO₂e/ft²) for 2023.
Where is KM 409 Hewes Street?
KM 409 Hewes Street is in New York City, New York 11211. Its coordinates are 40.70890, -73.95104 (latitude, longitude), as published in the Energy and Water Data Disclosure file.
How big is KM 409 Hewes Street and when was it built?
KM 409 Hewes Street has 27,774 sq ft of gross floor area, as reported in its 2023 disclosure. The disclosure lists 1915 as its year built. It is classed as multifamily housing.
Is KM 409 Hewes Street covered by Local Law 84 (LL84)?
Yes — it appears in the 2023 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, “KM 409 Hewes Street, New York City, New York — 2023 benchmarking disclosure”, https://buildingcensus.com/buildings/new-york-city/km-409-hewes-street-181e4147 (data as of October 2, 2026).