640 W 231 St
Multifamily Housing in New York City, NY · 640 West 231st Street · 10463
At a glance
640 W 231 St is a 83,200-square-foot multifamily housing building at 640 West 231st Street in New York City, New York, built in 1953. In its 2022 New York City benchmarking disclosure it reported an ENERGY STAR score of 62 out of 100 (grade C), a site energy-use intensity of 85.0 kBtu/ft² and 403 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 2022
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | 62 (band C) |
| Site EUI | 85.0 kBtu/ft² |
| Source EUI | 107.7 kBtu/ft² |
| GHG emissions | 403 tCO₂e |
| GHG intensity | 4.8 kgCO₂e/ft² |
| Electricity | 257,874 kWh |
| Water use | 3,565 kgal |
| Gross floor area | 83,200 sq ft |
| Source record | nyc:2719157:2022 |
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
- 640 West 231st Street
- City
- New York City
- State
- New York
- ZIP
- 10463
- Coordinates
- 40.88330, -73.91465
Within ~1 km
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See also: most efficient in New York City · biggest emitters
How does 640 W 231 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. 640 W 231 St's ENERGY STAR score of 62 compares with an average of 63 across the 22,829 that report a score; it scores higher than 42% of them and lower than 57%. Its site EUI of 85.0 kBtu/ft² is about 13% 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 4.8 kgCO₂e/ft² is roughly in line with the group average of 5.2 kgCO₂e/ft².
At 83,200 sq ft, it is about 18% below the average floor area of 100,951 sq ft for those buildings. Its 1953 construction date is close to 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.
What does an ENERGY STAR score of 62 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 62 means the building performs better than about 62% of its national peers. BuildingCensus bands the score into report-card grades; 62 falls in band C — below median (55–69). It sits 13 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. 640 W 231 St's 85.0 kBtu/ft² across 83,200 sq ft works out to about 7.1 billion Btu (2,073 MWh-equivalent) in 2022. Its source EUI of 107.7 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 257,874 kWh of electricity and 3,565 thousand gallons of water for the year.
Which law requires 640 W 231 St to report its energy use?
640 W 231 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 2022 disclosure (source record nyc:2719157:2022). 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
- Prime: 70 Park Terrace East· 83,187 sq ft · score 62 (C)
- 3030 Ocean Ave· 83,160 sq ft · score 48 (D)
- 76-35 113th Street· 83,160 sq ft
- 225 East 73rd Street· 83,160 sq ft · score 75 (B)
- 3030 Ocean Avenue· 83,160 sq ft · score 56 (C)
- Emor: 301-317 West 19th Street· 83,151 sq ft · score 100 (A)
- 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 640 W 231 St's energy grade?
640 W 231 St scores 62 out of 100 on ENERGY STAR — band C, below median (55–69) — in its 2022 New York City disclosure. Scores are national percentiles against similar buildings; 75+ qualifies for ENERGY STAR certification.
How much energy does 640 W 231 St use?
Its 2022 site energy-use intensity was 85.0 kBtu/ft² (107.7 kBtu/ft² source) across 83,200 sq ft, including 257,874 kWh of electricity.
What are 640 W 231 St's carbon emissions?
640 W 231 St reported 403 tCO₂e of greenhouse-gas emissions (4.8 kgCO₂e/ft²) for 2022.
Where is 640 W 231 St?
640 W 231 St is at 640 West 231st Street, in New York City, New York 10463. Its coordinates are 40.88330, -73.91465 (latitude, longitude), as published in the Energy and Water Data Disclosure file.
How big is 640 W 231 St and when was it built?
640 W 231 St has 83,200 sq ft of gross floor area, as reported in its 2022 disclosure. The disclosure lists 1953 as its year built. It is classed as multifamily housing.
Is 640 W 231 St covered by Local Law 84 (LL84)?
Yes — it appears in the 2022 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, “640 W 231 St, New York City, New York — 2022 benchmarking disclosure”, https://buildingcensus.com/buildings/new-york-city/640-w-231-st-e3e6a4c1 (data as of October 2, 2026).