640 WEST 170 STREET - 20331
Multifamily Housing in New York City, NY · 640 WEST 170 STREET · 10032
At a glance
640 WEST 170 STREET - 20331 is a 44,372-square-foot multifamily housing building in New York City, New York, built in 1923. In its 2024 New York City benchmarking disclosure it reported an ENERGY STAR score of 92 out of 100 (grade A), a site energy-use intensity of 63.0 kBtu/ft² and 168 tCO₂e of greenhouse-gas emissions. That score is higher than 79% 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 | 92 (band A) |
| Site EUI | 63.0 kBtu/ft² |
| Source EUI | 78.6 kBtu/ft² |
| GHG emissions | 168 tCO₂e |
| GHG intensity | 3.8 kgCO₂e/ft² |
| Electricity | 91,854 kWh |
| Natural gas | 24,841 therms |
| Water use | 2,121 kgal |
| Gross floor area | 44,372 sq ft |
| Source record | nyc:6255647:2024 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2024latest | 92 | -1 | 63.0 kBtu/ft² | 168 tCO₂e |
| 2023 | 93 | +80 | 60.0 kBtu/ft² | 160 tCO₂e |
| 2022 | 13 | 143.3 kBtu/ft² | 326 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
- 640 WEST 170 STREET
- City
- New York City
- State
- New York
- ZIP
- 10032
- Coordinates
- 40.84286, -73.94029
Within ~1 km
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How does 640 WEST 170 STREET - 20331 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 WEST 170 STREET - 20331's ENERGY STAR score of 92 compares with an average of 63 across the 22,829 that report a score; it scores higher than 79% of them and lower than 20%. Its site EUI of 63.0 kBtu/ft² is about 16% 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 3.8 kgCO₂e/ft² is about 27% below the group average of 5.2 kgCO₂e/ft².
At 44,372 sq ft, it is about 56% below the average floor area of 100,951 sq ft for those buildings. It was built in 1923, 29 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 640 WEST 170 STREET - 20331's energy performance changed over time?
BuildingCensus holds 3 New York City disclosures for 640 WEST 170 STREET - 20331, covering report years 2022–2024. Its ENERGY STAR score went from 13 in 2022 to 92 in 2024 (+79 points); its best year on file was 2023, at 93. Site EUI moved from 143.3 kBtu/ft² (2022) to 63.0 kBtu/ft² (2024), a 56% decrease. Reported emissions went from 326 tCO₂e to 168 tCO₂e over the same span (down 48%).
What does an ENERGY STAR score of 92 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 92 means the building performs better than about 92% of its national peers. BuildingCensus bands the score into report-card grades; 92 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. 640 WEST 170 STREET - 20331's 63.0 kBtu/ft² across 44,372 sq ft works out to about 2.8 billion Btu (819 MWh-equivalent) in 2024. Its source EUI of 78.6 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 91,854 kWh of electricity, 24,841 therms of natural gas and 2,121 thousand gallons of water for the year.
Which law requires 640 WEST 170 STREET - 20331 to report its energy use?
640 WEST 170 STREET - 20331 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:6255647:2024). 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.
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- 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 WEST 170 STREET - 20331's energy grade?
640 WEST 170 STREET - 20331 scores 92 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 640 WEST 170 STREET - 20331 use?
Its 2024 site energy-use intensity was 63.0 kBtu/ft² (78.6 kBtu/ft² source) across 44,372 sq ft, including 91,854 kWh of electricity and 24,841 therms of natural gas.
What are 640 WEST 170 STREET - 20331's carbon emissions?
640 WEST 170 STREET - 20331 reported 168 tCO₂e of greenhouse-gas emissions (3.8 kgCO₂e/ft²) for 2024.
Where is 640 WEST 170 STREET - 20331?
640 WEST 170 STREET - 20331 is in New York City, New York 10032. Its coordinates are 40.84286, -73.94029 (latitude, longitude), as published in the Energy and Water Data Disclosure file.
How big is 640 WEST 170 STREET - 20331 and when was it built?
640 WEST 170 STREET - 20331 has 44,372 sq ft of gross floor area, as reported in its 2024 disclosure. The disclosure lists 1923 as its year built. It is classed as multifamily housing.
Is 640 WEST 170 STREET - 20331 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, “640 WEST 170 STREET - 20331, New York City, New York — 2024 benchmarking disclosure”, https://buildingcensus.com/buildings/new-york-city/640-west-170-street-20331-333c0468 (data as of October 2, 2026).