121 West 20th St.
Multifamily Housing in New York City, NY · 121 W. 20Th Street · 10011
At a glance
121 West 20th St. is a 65,849-square-foot multifamily housing building at 121 W. 20Th Street in New York City, New York, built in 1875. In its 2024 New York City benchmarking disclosure it reported an ENERGY STAR score of 29 out of 100 (grade D), a site energy-use intensity of 61.4 kBtu/ft² and 388 tCO₂e of greenhouse-gas emissions. That score is higher than 17% 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 | 29 (band D) |
| Site EUI | 61.4 kBtu/ft² |
| Source EUI | 138.8 kBtu/ft² |
| GHG emissions | 388 tCO₂e |
| GHG intensity | 5.9 kgCO₂e/ft² |
| Electricity | 819,557 kWh |
| Natural gas | 12,499 therms |
| Gross floor area | 65,849 sq ft |
| Source record | nyc:2721945:2024 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2024latest | 29 | -7 | 61.4 kBtu/ft² | 388 tCO₂e |
| 2023 | 36 | +5 | 59.2 kBtu/ft² | 350 tCO₂e |
| 2022 | 31 | 66.2 kBtu/ft² | 320 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
- 121 W. 20Th Street
- City
- New York City
- State
- New York
- ZIP
- 10011
- Coordinates
- 40.74141, -73.99504
Within ~1 km
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- One Madison Avenuescore —
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- ConEd Irving Placescore 55
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- Benchmarking Group - 3score —
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See also: most efficient in New York City · biggest emitters
How does 121 West 20th 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. 121 West 20th St.'s ENERGY STAR score of 29 compares with an average of 63 across the 22,829 that report a score; it scores higher than 17% of them and lower than 83%. Its site EUI of 61.4 kBtu/ft² is about 18% 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 5.9 kgCO₂e/ft² is about 13% above the group average of 5.2 kgCO₂e/ft².
At 65,849 sq ft, it is about 35% below the average floor area of 100,951 sq ft for those buildings. It was built in 1875, 77 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 121 West 20th St.'s energy performance changed over time?
BuildingCensus holds 3 New York City disclosures for 121 West 20th St., covering report years 2022–2024. Its ENERGY STAR score went from 31 in 2022 to 29 in 2024 (-2 points); its best year on file was 2023, at 36. Site EUI moved from 66.2 kBtu/ft² (2022) to 61.4 kBtu/ft² (2024), a 7% decrease. Reported emissions went from 320 tCO₂e to 388 tCO₂e over the same span (up 21%).
What does an ENERGY STAR score of 29 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 29 means the building performs better than about 29% of its national peers. BuildingCensus bands the score into report-card grades; 29 falls in band D — lowest band (1–54). It sits 46 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. 121 West 20th St.'s 61.4 kBtu/ft² across 65,849 sq ft works out to about 4 billion Btu (1,185 MWh-equivalent) in 2024. Its source EUI of 138.8 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 819,557 kWh of electricity and 12,499 therms of natural gas for the year.
Which law requires 121 West 20th St. to report its energy use?
121 West 20th 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 2024 disclosure (source record nyc:2721945:2024). 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
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- 170-190 Schofield Street· 65,844 sq ft · score 91 (A)
- Impact Property Management : 2373 OCEAN PARKWAY· 65,840 sq ft · score 12 (D)
- 9302 Realty LLC· 65,826 sq ft · score 71 (B)
- 527 W 110th St, 10025· 65,822 sq ft · score 89 (A)
- 1290 Realty LLC· 65,821 sq ft · score 47 (D)
- 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 121 West 20th St.'s energy grade?
121 West 20th St. scores 29 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 121 West 20th St. use?
Its 2024 site energy-use intensity was 61.4 kBtu/ft² (138.8 kBtu/ft² source) across 65,849 sq ft, including 819,557 kWh of electricity and 12,499 therms of natural gas.
What are 121 West 20th St.'s carbon emissions?
121 West 20th St. reported 388 tCO₂e of greenhouse-gas emissions (5.9 kgCO₂e/ft²) for 2024.
Where is 121 West 20th St.?
121 West 20th St. is at 121 W. 20Th Street, in New York City, New York 10011. Its coordinates are 40.74141, -73.99504 (latitude, longitude), as published in the Energy and Water Data Disclosure file.
How big is 121 West 20th St. and when was it built?
121 West 20th St. has 65,849 sq ft of gross floor area, as reported in its 2024 disclosure. The disclosure lists 1875 as its year built. It is classed as multifamily housing.
Is 121 West 20th St. 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, “121 West 20th St., New York City, New York — 2024 benchmarking disclosure”, https://buildingcensus.com/buildings/new-york-city/121-west-20th-st-2e9a4601 (data as of October 2, 2026).