241-245 West 51st Street
Multifamily Housing in New York City, NY · 10019
At a glance
241-245 West 51st Street is a 48,368-square-foot multifamily housing building in New York City, New York, built in 1912. In its 2024 New York City benchmarking disclosure it reported an ENERGY STAR score of 31 out of 100 (grade D), a site energy-use intensity of 122.5 kBtu/ft² and 492 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 | 31 (band D) |
| Site EUI | 122.5 kBtu/ft² |
| Source EUI | 195.2 kBtu/ft² |
| GHG emissions | 492 tCO₂e |
| GHG intensity | 10.2 kgCO₂e/ft² |
| Electricity | 558,161 kWh |
| Natural gas | 12,206 therms |
| Gross floor area | 48,368 sq ft |
| Source record | nyc:24896811:2024 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2024latest | 31 | -15 | 122.5 kBtu/ft² | 492 tCO₂e |
| 2023 | 46 | +6 | 103.5 kBtu/ft² | 396 tCO₂e |
| 2022 | 40 | 122.0 kBtu/ft² | 431 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
- 241-245 West 51st Street
- City
- New York City
- State
- New York
- ZIP
- 10019
- Coordinates
- 40.76241, -73.98443
Within ~1 km
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See also: most efficient in New York City · biggest emitters
How does 241-245 West 51st 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. 241-245 West 51st Street's ENERGY STAR score of 31 compares with an average of 63 across the 22,829 that report a score; it scores higher than 18% of them and lower than 82%. Its site EUI of 122.5 kBtu/ft² is about 64% 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 10.2 kgCO₂e/ft² is about twice the group average of 5.2 kgCO₂e/ft².
At 48,368 sq ft, it is about half of the average floor area of 100,951 sq ft for those buildings. It was built in 1912, 40 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 241-245 West 51st Street's energy performance changed over time?
BuildingCensus holds 3 New York City disclosures for 241-245 West 51st Street, covering report years 2022–2024. Its ENERGY STAR score went from 40 in 2022 to 31 in 2024 (-9 points); its best year on file was 2023, at 46. Site EUI moved from 122.0 kBtu/ft² (2022) to 122.5 kBtu/ft² (2024), an 0% increase. Reported emissions went from 431 tCO₂e to 492 tCO₂e over the same span (up 14%).
What does an ENERGY STAR score of 31 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 31 means the building performs better than about 31% of its national peers. BuildingCensus bands the score into report-card grades; 31 falls in band D — lowest band (1–54). It sits 44 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. 241-245 West 51st Street's 122.5 kBtu/ft² across 48,368 sq ft works out to about 5.9 billion Btu (1,736 MWh-equivalent) in 2024. Its source EUI of 195.2 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 558,161 kWh of electricity and 12,206 therms of natural gas for the year.
Which law requires 241-245 West 51st Street to report its energy use?
241-245 West 51st 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:24896811:2024). 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
- 500 West 188th Street· 48,366 sq ft · score 52 (D)
- 5120 19th Avenue.· 48,364 sq ft · score 47 (D)
- Green Light Energy Conservation:5120 19 AVENUE· 48,364 sq ft · score 42 (D)
- MILLER: 1172 Anderson Avenue· 48,353 sq ft · score 31 (D)
- 12 WEST 97 STREET· 48,350 sq ft
- 370 CENTRAL PARK WEST· 48,349 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 241-245 West 51st Street's energy grade?
241-245 West 51st Street scores 31 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 241-245 West 51st Street use?
Its 2024 site energy-use intensity was 122.5 kBtu/ft² (195.2 kBtu/ft² source) across 48,368 sq ft, including 558,161 kWh of electricity and 12,206 therms of natural gas.
What are 241-245 West 51st Street's carbon emissions?
241-245 West 51st Street reported 492 tCO₂e of greenhouse-gas emissions (10.2 kgCO₂e/ft²) for 2024.
Where is 241-245 West 51st Street?
241-245 West 51st Street is in New York City, New York 10019. Its coordinates are 40.76241, -73.98443 (latitude, longitude), as published in the Energy and Water Data Disclosure file.
How big is 241-245 West 51st Street and when was it built?
241-245 West 51st Street has 48,368 sq ft of gross floor area, as reported in its 2024 disclosure. The disclosure lists 1912 as its year built. It is classed as multifamily housing.
Is 241-245 West 51st 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, “241-245 West 51st Street, New York City, New York — 2024 benchmarking disclosure”, https://buildingcensus.com/buildings/new-york-city/241-245-west-51st-street-bed28d40 (data as of October 2, 2026).