Two Manhattan West (401 WEST 31 STREET)
Office in New York City, NY · 401 WEST 31 STREET · 10001
At a glance
Two Manhattan West (401 WEST 31 STREET) is a 1,878,106-square-foot office building in New York City, New York, built in 2022. In its 2024 New York City benchmarking disclosure it reported an ENERGY STAR score of 77 out of 100 (grade B), a site energy-use intensity of 42.8 kBtu/ft² and 8,303 tCO₂e of greenhouse-gas emissions. That score is higher than 46% of the 2,519 scored office buildings in New York City.
Local Law 84 (LL84) · reporting year 2024
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | 77 (band B) |
| Site EUI | 42.8 kBtu/ft² |
| Source EUI | 103.3 kBtu/ft² |
| GHG emissions | 8,303 tCO₂e |
| GHG intensity | 4.4 kgCO₂e/ft² |
| Electricity | 17,836,182 kWh |
| Natural gas | 124 therms |
| Water use | 24,398 kgal |
| Gross floor area | 1,878,106 sq ft |
| Source record | nyc:27812735:2024 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2024latest | 77 | -18 | 42.8 kBtu/ft² | 8,303 tCO₂e |
| 2023 | 95 | 23.0 kBtu/ft² | 4,208 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
- 401 WEST 31 STREET
- City
- New York City
- State
- New York
- ZIP
- 10001
- Coordinates
- 40.75150, -73.99770
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
- The Spiral - 66 Hudson Boulevardscore 82
Office · 2,830,000 sq ft
See also: most efficient in New York City · biggest emitters
How does Two Manhattan West (401 WEST 31 STREET) 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. Two Manhattan West (401 WEST 31 STREET)'s ENERGY STAR score of 77 compares with an average of 72 across the 2,519 that report a score; it scores higher than 46% of them and lower than 52%. Its site EUI of 42.8 kBtu/ft² is about 34% 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 4.4 kgCO₂e/ft² is about 24% below the group average of 5.8 kgCO₂e/ft².
At 1,878,106 sq ft, it is about 814% above the average floor area of 205,440 sq ft for those buildings. It was built in 2022, 82 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 Two Manhattan West (401 WEST 31 STREET)'s energy performance changed over time?
BuildingCensus holds 2 New York City disclosures for Two Manhattan West (401 WEST 31 STREET), covering report years 2023–2024. Its ENERGY STAR score went from 95 in 2023 to 77 in 2024 (-18 points); its best year on file was 2023, at 95. Site EUI moved from 23.0 kBtu/ft² (2023) to 42.8 kBtu/ft² (2024), an 86% increase. Reported emissions went from 4,208 tCO₂e to 8,303 tCO₂e over the same span (up 97%).
What does an ENERGY STAR score of 77 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 77 means the building performs better than about 77% of its national peers. BuildingCensus bands the score into report-card grades; 77 falls in band B — above median (70–84). 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. Two Manhattan West (401 WEST 31 STREET)'s 42.8 kBtu/ft² across 1,878,106 sq ft works out to about 80.4 billion Btu (23,558 MWh-equivalent) in 2024. Its source EUI of 103.3 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 17,836,182 kWh of electricity, 124 therms of natural gas and 24,398 thousand gallons of water for the year.
Which law requires Two Manhattan West (401 WEST 31 STREET) to report its energy use?
Two Manhattan West (401 WEST 31 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:27812735:2024). 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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- Office buildings in New York City· 3,384 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 Two Manhattan West (401 WEST 31 STREET)'s energy grade?
Two Manhattan West (401 WEST 31 STREET) scores 77 out of 100 on ENERGY STAR — band B, above median (70–84) — in its 2024 New York City disclosure. Scores are national percentiles against similar buildings; 75+ qualifies for ENERGY STAR certification.
How much energy does Two Manhattan West (401 WEST 31 STREET) use?
Its 2024 site energy-use intensity was 42.8 kBtu/ft² (103.3 kBtu/ft² source) across 1,878,106 sq ft, including 17,836,182 kWh of electricity and 124 therms of natural gas.
What are Two Manhattan West (401 WEST 31 STREET)'s carbon emissions?
Two Manhattan West (401 WEST 31 STREET) reported 8,303 tCO₂e of greenhouse-gas emissions (4.4 kgCO₂e/ft²) for 2024.
Where is Two Manhattan West (401 WEST 31 STREET)?
Two Manhattan West (401 WEST 31 STREET) is in New York City, New York 10001. Its coordinates are 40.75150, -73.99770 (latitude, longitude), as published in the Energy and Water Data Disclosure file.
How big is Two Manhattan West (401 WEST 31 STREET) and when was it built?
Two Manhattan West (401 WEST 31 STREET) has 1,878,106 sq ft of gross floor area, as reported in its 2024 disclosure. The disclosure lists 2022 as its year built. It is classed as office.
Is Two Manhattan West (401 WEST 31 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, “Two Manhattan West (401 WEST 31 STREET), New York City, New York — 2024 benchmarking disclosure”, https://buildingcensus.com/buildings/new-york-city/two-manhattan-west-401-west-31-street-dfc912f3 (data as of October 2, 2026).