500 W 21st Street Condominium
Multifamily Housing in New York City, NY · 500 W 21st Street · 10011
At a glance
500 W 21st Street Condominium is a 89,431-square-foot multifamily housing building in New York City, New York, built in 2014. In its 2024 New York City benchmarking disclosure it reported an ENERGY STAR score of 18 out of 100 (grade D), a site energy-use intensity of 68.7 kBtu/ft² and 513 tCO₂e of greenhouse-gas emissions. That score is higher than 11% 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 | 18 (band D) |
| Site EUI | 68.7 kBtu/ft² |
| Source EUI | 131.2 kBtu/ft² |
| GHG emissions | 513 tCO₂e |
| GHG intensity | 5.7 kgCO₂e/ft² |
| Electricity | 884,062 kWh |
| Natural gas | 31,274 therms |
| Water use | 2,464 kgal |
| Gross floor area | 89,431 sq ft |
| Source record | nyc:4367548:2024 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2024latest | 18 | -9 | 68.7 kBtu/ft² | 513 tCO₂e |
| 2023 | 27 | ±0 | 60.9 kBtu/ft² | 500 tCO₂e |
| 2022 | 27 | 67.2 kBtu/ft² | 465 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
- 500 W 21st Street
- City
- New York City
- State
- New York
- ZIP
- 10011
- Coordinates
- 40.74643, -74.00519
Within ~1 km
Nearby benchmarked buildings
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- 20-30 Hudson Yardsscore —
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- 50 Hudson Yardsscore 76
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- 111 Eighth Avenuescore —
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- 601 West 26 St - Starrett Lehighscore 93
Office · 1,939,488 sq ft
See also: most efficient in New York City · biggest emitters
How does 500 W 21st Street Condominium 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. 500 W 21st Street Condominium's ENERGY STAR score of 18 compares with an average of 63 across the 22,829 that report a score; it scores higher than 11% of them and lower than 89%. Its site EUI of 68.7 kBtu/ft² is roughly in line with 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 5.7 kgCO₂e/ft² is about 10% above the group average of 5.2 kgCO₂e/ft².
At 89,431 sq ft, it is about 11% below the average floor area of 100,951 sq ft for those buildings. It was built in 2014, 62 years later 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 500 W 21st Street Condominium's energy performance changed over time?
BuildingCensus holds 3 New York City disclosures for 500 W 21st Street Condominium, covering report years 2022–2024. Its ENERGY STAR score went from 27 in 2022 to 18 in 2024 (-9 points); its best year on file was 2022, at 27. Site EUI moved from 67.2 kBtu/ft² (2022) to 68.7 kBtu/ft² (2024), an 2% increase. Reported emissions went from 465 tCO₂e to 513 tCO₂e over the same span (up 10%).
What does an ENERGY STAR score of 18 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 18 means the building performs better than about 18% of its national peers. BuildingCensus bands the score into report-card grades; 18 falls in band D — lowest band (1–54). It sits 57 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. 500 W 21st Street Condominium's 68.7 kBtu/ft² across 89,431 sq ft works out to about 6.1 billion Btu (1,801 MWh-equivalent) in 2024. Its source EUI of 131.2 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 884,062 kWh of electricity, 31,274 therms of natural gas and 2,464 thousand gallons of water for the year.
Which law requires 500 W 21st Street Condominium to report its energy use?
500 W 21st Street Condominium 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:4367548:2024). 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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Frequently asked questions
What is 500 W 21st Street Condominium's energy grade?
500 W 21st Street Condominium scores 18 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 500 W 21st Street Condominium use?
Its 2024 site energy-use intensity was 68.7 kBtu/ft² (131.2 kBtu/ft² source) across 89,431 sq ft, including 884,062 kWh of electricity and 31,274 therms of natural gas.
What are 500 W 21st Street Condominium's carbon emissions?
500 W 21st Street Condominium reported 513 tCO₂e of greenhouse-gas emissions (5.7 kgCO₂e/ft²) for 2024.
Where is 500 W 21st Street Condominium?
500 W 21st Street Condominium is in New York City, New York 10011. Its coordinates are 40.74643, -74.00519 (latitude, longitude), as published in the Energy and Water Data Disclosure file.
How big is 500 W 21st Street Condominium and when was it built?
500 W 21st Street Condominium has 89,431 sq ft of gross floor area, as reported in its 2024 disclosure. The disclosure lists 2014 as its year built. It is classed as multifamily housing.
Is 500 W 21st Street Condominium 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, “500 W 21st Street Condominium, New York City, New York — 2024 benchmarking disclosure”, https://buildingcensus.com/buildings/new-york-city/500-w-21st-street-condominium-fce3443b (data as of October 2, 2026).