Montana Bay Co:120 WEST 31 STREET.
Office in New York City, NY · 120 WEST 31 STREET · 10001
At a glance
Montana Bay Co:120 WEST 31 STREET. is a 31,871-square-foot office building in New York City, New York, built in 1920. In its 2024 New York City benchmarking disclosure it reported an ENERGY STAR score of 95 out of 100 (grade A), a site energy-use intensity of 29.5 kBtu/ft² and 91 tCO₂e of greenhouse-gas emissions. That score is higher than 87% 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 | 95 (band A) |
| Site EUI | 29.5 kBtu/ft² |
| Source EUI | 58.6 kBtu/ft² |
| GHG emissions | 91 tCO₂e |
| GHG intensity | 2.9 kgCO₂e/ft² |
| Electricity | 150,133 kWh |
| Water use | 217 kgal |
| Gross floor area | 31,871 sq ft |
| Source record | nyc:48785792:2024 |
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
- 120 WEST 31 STREET
- City
- New York City
- State
- New York
- ZIP
- 10001
- Coordinates
- 40.74824, -73.99000
Within ~1 km
Nearby benchmarked buildings
- Manhattan Westscore —
Other · 4,153,954 sq ft
- Penn Southscore 95
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- ESRT - Empire State Buildingscore 78
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- PENN 1 (LL97)score —
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- PENN 1 (Offices)score —
Office · 2,439,745 sq ft
- One Bryant Parkscore 62
Financial Office · 2,237,686 sq ft
See also: most efficient in New York City · biggest emitters
How does Montana Bay Co:120 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. Montana Bay Co:120 WEST 31 STREET.'s ENERGY STAR score of 95 compares with an average of 72 across the 2,519 that report a score; it scores higher than 87% of them and lower than 11%. Its site EUI of 29.5 kBtu/ft² is about half of 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 2.9 kgCO₂e/ft² is about half of the group average of 5.8 kgCO₂e/ft².
At 31,871 sq ft, it is about 84% below the average floor area of 205,440 sq ft for those buildings. It was built in 1920, 20 years earlier 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.
What does an ENERGY STAR score of 95 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 95 means the building performs better than about 95% of its national peers. BuildingCensus bands the score into report-card grades; 95 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. Montana Bay Co:120 WEST 31 STREET.'s 29.5 kBtu/ft² across 31,871 sq ft works out to about 0.9 billion Btu (276 MWh-equivalent) in 2024. Its source EUI of 58.6 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 150,133 kWh of electricity and 217 thousand gallons of water for the year.
Which law requires Montana Bay Co:120 WEST 31 STREET. to report its energy use?
Montana Bay Co:120 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:48785792:2024). 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 office buildings in New York City
- 585 west 181st· 31,850 sq ft · score 89 (A)
- 7700 HOLDINGS: 2433 KNAPP· 31,835 sq ft · score 96 (A)
- 446 Broadway· 31,835 sq ft · score 72 (B)
- Salon: 285 West Broadway· 31,785 sq ft · score 47 (D)
- 2357 60th Street· 31,764 sq ft · score 58 (C)
- Preferred Home Care of New York· 31,754 sq ft · score 88 (A)
- 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 Montana Bay Co:120 WEST 31 STREET.'s energy grade?
Montana Bay Co:120 WEST 31 STREET. scores 95 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 Montana Bay Co:120 WEST 31 STREET. use?
Its 2024 site energy-use intensity was 29.5 kBtu/ft² (58.6 kBtu/ft² source) across 31,871 sq ft, including 150,133 kWh of electricity.
What are Montana Bay Co:120 WEST 31 STREET.'s carbon emissions?
Montana Bay Co:120 WEST 31 STREET. reported 91 tCO₂e of greenhouse-gas emissions (2.9 kgCO₂e/ft²) for 2024.
Where is Montana Bay Co:120 WEST 31 STREET.?
Montana Bay Co:120 WEST 31 STREET. is in New York City, New York 10001. Its coordinates are 40.74824, -73.99000 (latitude, longitude), as published in the Energy and Water Data Disclosure file.
How big is Montana Bay Co:120 WEST 31 STREET. and when was it built?
Montana Bay Co:120 WEST 31 STREET. has 31,871 sq ft of gross floor area, as reported in its 2024 disclosure. The disclosure lists 1920 as its year built. It is classed as office.
Is Montana Bay Co:120 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, “Montana Bay Co:120 WEST 31 STREET., New York City, New York — 2024 benchmarking disclosure”, https://buildingcensus.com/buildings/new-york-city/montana-bay-co-120-west-31-street-649dbb98 (data as of October 2, 2026).