LOST AAR: 410 West 23rd Street (child)
Multifamily Housing in New York City, NY · 400-410 West 23rd Street · 10011
At a glance
LOST AAR: 410 West 23rd Street (child) is a 39,135-square-foot multifamily housing building at 400-410 West 23rd Street in New York City, New York, built in 1920. In its 2024 New York City benchmarking disclosure it reported a site energy-use intensity of 216.4 kBtu/ft² and 561 tCO₂e of greenhouse-gas emissions.
Local Law 84 (LL84) · reporting year 2024
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | — |
| Site EUI | 216.4 kBtu/ft² |
| Source EUI | 307.4 kBtu/ft² |
| GHG emissions | 561 tCO₂e |
| GHG intensity | 14.3 kgCO₂e/ft² |
| Electricity | 524,954 kWh |
| Natural gas | 66,790 therms |
| Gross floor area | 39,135 sq ft |
| Source record | nyc:6282377:2024 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2024latest | — | 216.4 kBtu/ft² | 561 tCO₂e | |
| 2023 | — | — | — | |
| 2022 | — | — | — |
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
- 400-410 West 23rd Street
- City
- New York City
- State
- New York
- ZIP
- 10011
- Coordinates
- 40.74667, -74.00176
Within ~1 km
Nearby benchmarked buildings
- Hudson Yards Cogen Campusscore —
Other · 7,739,076 sq ft
- Manhattan Westscore —
Other · 4,153,954 sq ft
- 20-30 Hudson Yardsscore —
Office · 3,810,623 sq ft
- Penn Southscore 95
Multifamily Housing · 3,391,963 sq ft
- 50 Hudson Yardsscore 76
Office · 2,944,455 sq ft
- 111 Eighth Avenuescore —
Office · 2,375,706 sq ft
See also: most efficient in New York City · biggest emitters
How does LOST AAR: 410 West 23rd Street (child) 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. Its site EUI of 216.4 kBtu/ft² is about 189% 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 14.3 kgCO₂e/ft² is about 176% above the group average of 5.2 kgCO₂e/ft².
At 39,135 sq ft, it is about 61% below the average floor area of 100,951 sq ft for those buildings. It was built in 1920, 32 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 LOST AAR: 410 West 23rd Street (child)'s energy performance changed over time?
BuildingCensus holds 3 New York City disclosures for LOST AAR: 410 West 23rd Street (child), covering report years 2022–2024. Only one of those years carries energy figures.
What does a site EUI of 216.4 kBtu/ft² mean?
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. LOST AAR: 410 West 23rd Street (child)'s 216.4 kBtu/ft² across 39,135 sq ft works out to about 8.5 billion Btu (2,482 MWh-equivalent) in 2024. Its source EUI of 307.4 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 524,954 kWh of electricity and 66,790 therms of natural gas for the year.
Which law requires LOST AAR: 410 West 23rd Street (child) to report its energy use?
LOST AAR: 410 West 23rd Street (child) 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:6282377:2024). 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
- 2978 East 196 St· 39,125 sq ft · score 64 (C)
- C Uptown Realty: 51 Bennett Ave· 39,125 sq ft · score 75 (B)
- 598 President Street· 39,123 sq ft · score 78 (B)
- 598 President Street, Brooklyn· 39,123 sq ft · score 74 (B)
- 130 Morningside Dr· 39,120 sq ft · score 76 (B)
- 142-146 West 83rd Street· 39,120 sq ft · score 3 (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 LOST AAR: 410 West 23rd Street (child)'s energy grade?
LOST AAR: 410 West 23rd Street (child) did not report an ENERGY STAR score in its 2024 disclosure, but its site energy-use intensity was 216.4 kBtu/ft².
How much energy does LOST AAR: 410 West 23rd Street (child) use?
Its 2024 site energy-use intensity was 216.4 kBtu/ft² (307.4 kBtu/ft² source) across 39,135 sq ft, including 524,954 kWh of electricity and 66,790 therms of natural gas.
What are LOST AAR: 410 West 23rd Street (child)'s carbon emissions?
LOST AAR: 410 West 23rd Street (child) reported 561 tCO₂e of greenhouse-gas emissions (14.3 kgCO₂e/ft²) for 2024.
Where is LOST AAR: 410 West 23rd Street (child)?
LOST AAR: 410 West 23rd Street (child) is at 400-410 West 23rd Street, in New York City, New York 10011. Its coordinates are 40.74667, -74.00176 (latitude, longitude), as published in the Energy and Water Data Disclosure file.
How big is LOST AAR: 410 West 23rd Street (child) and when was it built?
LOST AAR: 410 West 23rd Street (child) has 39,135 sq ft of gross floor area, as reported in its 2024 disclosure. The disclosure lists 1920 as its year built. It is classed as multifamily housing.
Is LOST AAR: 410 West 23rd Street (child) 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, “LOST AAR: 410 West 23rd Street (child), New York City, New York — 2024 benchmarking disclosure”, https://buildingcensus.com/buildings/new-york-city/lost-aar-410-west-23rd-street-child-27bf8cf1 (data as of October 2, 2026).