Wallack - 21 West 58th Street
Multifamily Housing in New York City, NY · 21 WEST 58 STREET · 10019
At a glance
Wallack - 21 West 58th Street is a 59,700-square-foot multifamily housing building at 21 WEST 58 STREET in New York City, New York, built in 1926. In its 2024 New York City benchmarking disclosure it reported an ENERGY STAR score of 93 out of 100 (grade A), a site energy-use intensity of 64.0 kBtu/ft² and 225 tCO₂e of greenhouse-gas emissions. That score is higher than 80% 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 | 93 (band A) |
| Site EUI | 64.0 kBtu/ft² |
| Source EUI | 77.8 kBtu/ft² |
| GHG emissions | 225 tCO₂e |
| GHG intensity | 3.8 kgCO₂e/ft² |
| Electricity | 106,458 kWh |
| Natural gas | 34,549 therms |
| Water use | 540 kgal |
| Gross floor area | 59,700 sq ft |
| Source record | nyc:2960308:2024 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2024latest | 93 | ±0 | 64.0 kBtu/ft² | 225 tCO₂e |
| 2023 | 93 | +4 | 62.5 kBtu/ft² | 218 tCO₂e |
| 2022 | 89 | 72.4 kBtu/ft² | 242 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
- 21 WEST 58 STREET
- City
- New York City
- State
- New York
- ZIP
- 10019
- Coordinates
- 40.76425, -73.97486
Within ~1 km
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How does Wallack - 21 West 58th 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. Wallack - 21 West 58th Street's ENERGY STAR score of 93 compares with an average of 63 across the 22,829 that report a score; it scores higher than 80% of them and lower than 18%. Its site EUI of 64.0 kBtu/ft² is about 15% 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 3.8 kgCO₂e/ft² is about 28% below the group average of 5.2 kgCO₂e/ft².
At 59,700 sq ft, it is about 41% below the average floor area of 100,951 sq ft for those buildings. It was built in 1926, 26 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 Wallack - 21 West 58th Street's energy performance changed over time?
BuildingCensus holds 3 New York City disclosures for Wallack - 21 West 58th Street, covering report years 2022–2024. Its ENERGY STAR score went from 89 in 2022 to 93 in 2024 (+4 points); its best year on file was 2023, at 93. Site EUI moved from 72.4 kBtu/ft² (2022) to 64.0 kBtu/ft² (2024), a 12% decrease. Reported emissions went from 242 tCO₂e to 225 tCO₂e over the same span (down 7%).
What does an ENERGY STAR score of 93 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 93 means the building performs better than about 93% of its national peers. BuildingCensus bands the score into report-card grades; 93 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. Wallack - 21 West 58th Street's 64.0 kBtu/ft² across 59,700 sq ft works out to about 3.8 billion Btu (1,120 MWh-equivalent) in 2024. Its source EUI of 77.8 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 106,458 kWh of electricity, 34,549 therms of natural gas and 540 thousand gallons of water for the year.
Which law requires Wallack - 21 West 58th Street to report its energy use?
Wallack - 21 West 58th 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:2960308:2024). 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.
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- Multifamily Housing buildings in New York City· 33,022 benchmarked
- All New York City benchmarked buildings· Local Law 84 (LL84)
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- Biggest emitters in New York City
Frequently asked questions
What is Wallack - 21 West 58th Street's energy grade?
Wallack - 21 West 58th Street scores 93 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 Wallack - 21 West 58th Street use?
Its 2024 site energy-use intensity was 64.0 kBtu/ft² (77.8 kBtu/ft² source) across 59,700 sq ft, including 106,458 kWh of electricity and 34,549 therms of natural gas.
What are Wallack - 21 West 58th Street's carbon emissions?
Wallack - 21 West 58th Street reported 225 tCO₂e of greenhouse-gas emissions (3.8 kgCO₂e/ft²) for 2024.
Where is Wallack - 21 West 58th Street?
Wallack - 21 West 58th Street is at 21 WEST 58 STREET, in New York City, New York 10019. Its coordinates are 40.76425, -73.97486 (latitude, longitude), as published in the Energy and Water Data Disclosure file.
How big is Wallack - 21 West 58th Street and when was it built?
Wallack - 21 West 58th Street has 59,700 sq ft of gross floor area, as reported in its 2024 disclosure. The disclosure lists 1926 as its year built. It is classed as multifamily housing.
Is Wallack - 21 West 58th 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, “Wallack - 21 West 58th Street, New York City, New York — 2024 benchmarking disclosure”, https://buildingcensus.com/buildings/new-york-city/wallack-21-west-58th-street-40df7555 (data as of October 2, 2026).