643 WEST 172ND STREET
Multifamily Housing in New York City, NY · 10032
At a glance
643 WEST 172ND STREET is a 25,400-square-foot multifamily housing building in New York City, New York, built in 1930. 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 23.0 kBtu/ft² and 57 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 | 23.0 kBtu/ft² |
| Source EUI | 53.2 kBtu/ft² |
| GHG emissions | 57 tCO₂e |
| GHG intensity | 2.3 kgCO₂e/ft² |
| Electricity | 123,793 kWh |
| Natural gas | 1,608 therms |
| Water use | 3,230 kgal |
| Gross floor area | 25,400 sq ft |
| Source record | nyc:28620968:2024 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2024latest | 100 | ±0 | 23.0 kBtu/ft² | 57 tCO₂e |
| 2023 | 100 | 22.6 kBtu/ft² | 54 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
- 643 WEST 172ND STREET
- City
- New York City
- State
- New York
- ZIP
- 10032
- Coordinates
- 40.84422, -73.93966
Within ~1 km
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See also: most efficient in New York City · biggest emitters
How does 643 WEST 172ND 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. 643 WEST 172ND STREET'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 23.0 kBtu/ft² is about 69% 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 2.3 kgCO₂e/ft² is about 57% below the group average of 5.2 kgCO₂e/ft².
At 25,400 sq ft, it is about 75% below the average floor area of 100,951 sq ft for those buildings. It was built in 1930, 22 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 643 WEST 172ND STREET's energy performance changed over time?
BuildingCensus holds 2 New York City disclosures for 643 WEST 172ND STREET, covering report years 2023–2024. Its ENERGY STAR score was 100 in both 2023 and 2024. Site EUI moved from 22.6 kBtu/ft² (2023) to 23.0 kBtu/ft² (2024), an 2% increase. Reported emissions went from 54 tCO₂e to 57 tCO₂e over the same span (up 6%).
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. 643 WEST 172ND STREET's 23.0 kBtu/ft² across 25,400 sq ft works out to about 0.6 billion Btu (171 MWh-equivalent) in 2024. Its source EUI of 53.2 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 123,793 kWh of electricity, 1,608 therms of natural gas and 3,230 thousand gallons of water for the year.
Which law requires 643 WEST 172ND STREET to report its energy use?
643 WEST 172ND 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 2024 disclosure (source record nyc:28620968:2024). 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
- 540 West 50th Street· 25,399 sq ft · score 57 (C)
- 305 East 140th Street Bronx Bricks Condominium· 25,386 sq ft · score 97 (A)
- 2220 78 Street· 25,386 sq ft · EUI 3.8 kBtu/ft²
- 22-12 78 Street· 25,386 sq ft · EUI 71.4 kBtu/ft²
- 2205 77 Street· 25,386 sq ft · EUI 51.0 kBtu/ft²
- 22-19 77 Street· 25,386 sq ft · EUI 57.1 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 643 WEST 172ND STREET's energy grade?
643 WEST 172ND STREET 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 643 WEST 172ND STREET use?
Its 2024 site energy-use intensity was 23.0 kBtu/ft² (53.2 kBtu/ft² source) across 25,400 sq ft, including 123,793 kWh of electricity and 1,608 therms of natural gas.
What are 643 WEST 172ND STREET's carbon emissions?
643 WEST 172ND STREET reported 57 tCO₂e of greenhouse-gas emissions (2.3 kgCO₂e/ft²) for 2024.
Where is 643 WEST 172ND STREET?
643 WEST 172ND STREET is in New York City, New York 10032. Its coordinates are 40.84422, -73.93966 (latitude, longitude), as published in the Energy and Water Data Disclosure file.
How big is 643 WEST 172ND STREET and when was it built?
643 WEST 172ND STREET has 25,400 sq ft of gross floor area, as reported in its 2024 disclosure. The disclosure lists 1930 as its year built. It is classed as multifamily housing.
Is 643 WEST 172ND STREET 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, “643 WEST 172ND STREET, New York City, New York — 2024 benchmarking disclosure”, https://buildingcensus.com/buildings/new-york-city/643-west-172nd-street-0bada074 (data as of October 2, 2026).