Blumenfeld: 159 East 125th St
Office in New York City, NY · 159 East 125th Street · 10035
At a glance
Blumenfeld: 159 East 125th St is a 446,933-square-foot office building at 159 East 125th Street in New York City, New York, built in 2000. In its 2023 New York City benchmarking disclosure it reported an ENERGY STAR score of 96 out of 100 (grade A), a site energy-use intensity of 24.4 kBtu/ft² and 912 tCO₂e of greenhouse-gas emissions. That score is higher than 89% of the 2,519 scored office buildings in New York City.
Local Law 84 (LL84) · reporting year 2023
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | 96 (band A) |
| Site EUI | 24.4 kBtu/ft² |
| Source EUI | 49.0 kBtu/ft² |
| GHG emissions | 912 tCO₂e |
| GHG intensity | 2.0 kgCO₂e/ft² |
| Electricity | 1,749,232 kWh |
| Natural gas | 49,500 therms |
| Water use | 7,054 kgal |
| Gross floor area | 446,933 sq ft |
| Source record | nyc:5866097:2023 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2023latest | 96 | -2 | 24.4 kBtu/ft² | 912 tCO₂e |
| 2022 | 98 | 15.3 kBtu/ft² | 544 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
- 159 East 125th Street
- City
- New York City
- State
- New York
- ZIP
- 10035
- Coordinates
- 40.80413, -73.93683
Within ~1 km
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- WAGNERscore —
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See also: most efficient in New York City · biggest emitters
How does Blumenfeld: 159 East 125th St compare with other office buildings in New York City?
The latest disclosures cover 3,384 office buildings in New York City, out of 48,310 buildings citywide. Blumenfeld: 159 East 125th St's ENERGY STAR score of 96 compares with an average of 72 across the 2,519 that report a score; it scores higher than 89% of them and lower than 10%. Its site EUI of 24.4 kBtu/ft² is about 62% below the average of 64.5 kBtu/ft² — it uses less energy per square foot than the typical building in that group. Its emissions intensity of 2.0 kgCO₂e/ft² is about 66% below the group average of 5.8 kgCO₂e/ft².
At 446,933 sq ft, it is about twice the average floor area of 205,440 sq ft for those buildings. It was built in 2000, 60 years later than the group's average year built (1940). Across all 24 jurisdictions BuildingCensus covers, the 15,264 office buildings average an ENERGY STAR score of 73 and a site EUI of 59.3 kBtu/ft².
How has Blumenfeld: 159 East 125th St's energy performance changed over time?
BuildingCensus holds 2 New York City disclosures for Blumenfeld: 159 East 125th St, covering report years 2022–2023. Its ENERGY STAR score went from 98 in 2022 to 96 in 2023 (-2 points); its best year on file was 2022, at 98. Site EUI moved from 15.3 kBtu/ft² (2022) to 24.4 kBtu/ft² (2023), an 59% increase. Reported emissions went from 544 tCO₂e to 912 tCO₂e over the same span (up 68%).
What does an ENERGY STAR score of 96 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 96 means the building performs better than about 96% of its national peers. BuildingCensus bands the score into report-card grades; 96 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. Blumenfeld: 159 East 125th St's 24.4 kBtu/ft² across 446,933 sq ft works out to about 10.9 billion Btu (3,196 MWh-equivalent) in 2023. Its source EUI of 49.0 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 1,749,232 kWh of electricity, 49,500 therms of natural gas and 7,054 thousand gallons of water for the year.
Which law requires Blumenfeld: 159 East 125th St to report its energy use?
Blumenfeld: 159 East 125th 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 2023 disclosure (source record nyc:5866097:2023). 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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- Office buildings in New York City· 3,384 benchmarked
- All New York City benchmarked buildings· Local Law 84 (LL84)
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- Least efficient large buildings in New York City
- Biggest emitters in New York City
Frequently asked questions
What is Blumenfeld: 159 East 125th St's energy grade?
Blumenfeld: 159 East 125th St scores 96 out of 100 on ENERGY STAR — band A, high performer (85–100) — in its 2023 New York City disclosure. Scores are national percentiles against similar buildings; 75+ qualifies for ENERGY STAR certification.
How much energy does Blumenfeld: 159 East 125th St use?
Its 2023 site energy-use intensity was 24.4 kBtu/ft² (49.0 kBtu/ft² source) across 446,933 sq ft, including 1,749,232 kWh of electricity and 49,500 therms of natural gas.
What are Blumenfeld: 159 East 125th St's carbon emissions?
Blumenfeld: 159 East 125th St reported 912 tCO₂e of greenhouse-gas emissions (2.0 kgCO₂e/ft²) for 2023.
Where is Blumenfeld: 159 East 125th St?
Blumenfeld: 159 East 125th St is at 159 East 125th Street, in New York City, New York 10035. Its coordinates are 40.80413, -73.93683 (latitude, longitude), as published in the Energy and Water Data Disclosure file.
How big is Blumenfeld: 159 East 125th St and when was it built?
Blumenfeld: 159 East 125th St has 446,933 sq ft of gross floor area, as reported in its 2023 disclosure. The disclosure lists 2000 as its year built. It is classed as office.
Is Blumenfeld: 159 East 125th St covered by Local Law 84 (LL84)?
Yes — it appears in the 2023 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, “Blumenfeld: 159 East 125th St, New York City, New York — 2023 benchmarking disclosure”, https://buildingcensus.com/buildings/new-york-city/blumenfeld-159-east-125th-st-796631ff (data as of October 2, 2026).