850 40th St
Multifamily Housing in New York City, NY · 850 40th Street · 11232
At a glance
850 40th St is a 29,356-square-foot multifamily housing building at 850 40th Street in New York City, New York, built in 1932. In its 2024 New York City benchmarking disclosure it reported an ENERGY STAR score of 32 out of 100 (grade D), a site energy-use intensity of 93.4 kBtu/ft² and 174 tCO₂e of greenhouse-gas emissions. That score is higher than 18% 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 | 32 (band D) |
| Site EUI | 93.4 kBtu/ft² |
| Source EUI | 125.3 kBtu/ft² |
| GHG emissions | 174 tCO₂e |
| GHG intensity | 5.9 kgCO₂e/ft² |
| Electricity | 133,905 kWh |
| Natural gas | 22,851 therms |
| Water use | 3,822 kgal |
| Gross floor area | 29,356 sq ft |
| Source record | nyc:6731571:2024 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2024latest | 32 | -6 | 93.4 kBtu/ft² | 174 tCO₂e |
| 2023 | 38 | -19 | 88.2 kBtu/ft² | 162 tCO₂e |
| 2022 | 57 | 85.5 kBtu/ft² | 147 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
- 850 40th Street
- City
- New York City
- State
- New York
- ZIP
- 11232
- Coordinates
- 40.64603, -73.99677
Within ~1 km
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See also: most efficient in New York City · biggest emitters
How does 850 40th St 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. 850 40th St's ENERGY STAR score of 32 compares with an average of 63 across the 22,829 that report a score; it scores higher than 18% of them and lower than 81%. Its site EUI of 93.4 kBtu/ft² is about 25% 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 5.9 kgCO₂e/ft² is about 14% above the group average of 5.2 kgCO₂e/ft².
At 29,356 sq ft, it is about 71% below the average floor area of 100,951 sq ft for those buildings. It was built in 1932, 20 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 850 40th St's energy performance changed over time?
BuildingCensus holds 3 New York City disclosures for 850 40th St, covering report years 2022–2024. Its ENERGY STAR score went from 57 in 2022 to 32 in 2024 (-25 points); its best year on file was 2022, at 57. Site EUI moved from 85.5 kBtu/ft² (2022) to 93.4 kBtu/ft² (2024), an 9% increase. Reported emissions went from 147 tCO₂e to 174 tCO₂e over the same span (up 18%).
What does an ENERGY STAR score of 32 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 32 means the building performs better than about 32% of its national peers. BuildingCensus bands the score into report-card grades; 32 falls in band D — lowest band (1–54). It sits 43 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. 850 40th St's 93.4 kBtu/ft² across 29,356 sq ft works out to about 2.7 billion Btu (804 MWh-equivalent) in 2024. Its source EUI of 125.3 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 133,905 kWh of electricity, 22,851 therms of natural gas and 3,822 thousand gallons of water for the year.
Which law requires 850 40th St to report its energy use?
850 40th St 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:6731571:2024). 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
- 710 Broadway· 29,351 sq ft · EUI 45.6 kBtu/ft²
- 710 OWNERS CORPORATION C/O ANDREWS BUILD ING CORP· 29,351 sq ft · EUI 49.8 kBtu/ft²
- Hudson Piers II· 29,350 sq ft · score 100 (A)
- 1279 CHISHOLM STREET - 43121· 29,347 sq ft · score 49 (D)
- 611 Madison Ave· 29,342 sq ft · EUI 136.1 kBtu/ft²
- Waterstone group - 1718 66th St· 29,338 sq ft · score 39 (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 850 40th St's energy grade?
850 40th St scores 32 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 850 40th St use?
Its 2024 site energy-use intensity was 93.4 kBtu/ft² (125.3 kBtu/ft² source) across 29,356 sq ft, including 133,905 kWh of electricity and 22,851 therms of natural gas.
What are 850 40th St's carbon emissions?
850 40th St reported 174 tCO₂e of greenhouse-gas emissions (5.9 kgCO₂e/ft²) for 2024.
Where is 850 40th St?
850 40th St is at 850 40th Street, in New York City, New York 11232. Its coordinates are 40.64603, -73.99677 (latitude, longitude), as published in the Energy and Water Data Disclosure file.
How big is 850 40th St and when was it built?
850 40th St has 29,356 sq ft of gross floor area, as reported in its 2024 disclosure. The disclosure lists 1932 as its year built. It is classed as multifamily housing.
Is 850 40th St 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, “850 40th St, New York City, New York — 2024 benchmarking disclosure”, https://buildingcensus.com/buildings/new-york-city/850-40th-st-ec040010 (data as of October 2, 2026).