303 WEST 42 STREET
Office in New York City, NY · 10036
At a glance
303 WEST 42 STREET is a 62,051-square-foot office building in New York City, New York, built in 1928. In its 2024 New York City benchmarking disclosure it reported a site energy-use intensity of 77.7 kBtu/ft² and 428 tCO₂e of greenhouse-gas emissions.
Local Law 84 (LL84) · reporting year 2024
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | — |
| Site EUI | 77.7 kBtu/ft² |
| Source EUI | 159.8 kBtu/ft² |
| GHG emissions | 428 tCO₂e |
| GHG intensity | 6.9 kgCO₂e/ft² |
| Electricity | 812,875 kWh |
| Natural gas | 20,476 therms |
| Gross floor area | 62,051 sq ft |
| Source record | nyc:6815729:2024 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2024latest | — | 77.7 kBtu/ft² | 428 tCO₂e | |
| 2023 | — | 71.0 kBtu/ft² | 391 tCO₂e | |
| 2022 | — | 101.2 kBtu/ft² | 398 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
- 303 WEST 42 STREET
- City
- New York City
- State
- New York
- ZIP
- 10036
- Coordinates
- 40.75744, -73.99025
Within ~1 km
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See also: most efficient in New York City · biggest emitters
How does 303 WEST 42 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. Its site EUI of 77.7 kBtu/ft² is about 20% above the average of 64.5 kBtu/ft² — it uses more energy per square foot than the typical building in that group. Its emissions intensity of 6.9 kgCO₂e/ft² is about 19% above the group average of 5.8 kgCO₂e/ft².
At 62,051 sq ft, it is about 70% below the average floor area of 205,440 sq ft for those buildings. It was built in 1928, 12 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.
How has 303 WEST 42 STREET's energy performance changed over time?
BuildingCensus holds 3 New York City disclosures for 303 WEST 42 STREET, covering report years 2022–2024. Site EUI moved from 101.2 kBtu/ft² (2022) to 77.7 kBtu/ft² (2024), a 23% decrease. Reported emissions went from 398 tCO₂e to 428 tCO₂e over the same span (up 8%).
What does a site EUI of 77.7 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. 303 WEST 42 STREET's 77.7 kBtu/ft² across 62,051 sq ft works out to about 4.8 billion Btu (1,413 MWh-equivalent) in 2024. Its source EUI of 159.8 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 812,875 kWh of electricity and 20,476 therms of natural gas for the year.
Which law requires 303 WEST 42 STREET to report its energy use?
303 WEST 42 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:6815729:2024). 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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- Greater Jamaica Development:90-04 160 STREET· 61,762 sq ft · score 94 (A)
- Teresharan Realty / 39 W 32nd St· 61,745 sq ft · score 75 (B)
- 39 West 29ST Owners COrp· 61,675 sq ft
- 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 303 WEST 42 STREET's energy grade?
303 WEST 42 STREET did not report an ENERGY STAR score in its 2024 disclosure, but its site energy-use intensity was 77.7 kBtu/ft².
How much energy does 303 WEST 42 STREET use?
Its 2024 site energy-use intensity was 77.7 kBtu/ft² (159.8 kBtu/ft² source) across 62,051 sq ft, including 812,875 kWh of electricity and 20,476 therms of natural gas.
What are 303 WEST 42 STREET's carbon emissions?
303 WEST 42 STREET reported 428 tCO₂e of greenhouse-gas emissions (6.9 kgCO₂e/ft²) for 2024.
Where is 303 WEST 42 STREET?
303 WEST 42 STREET is in New York City, New York 10036. Its coordinates are 40.75744, -73.99025 (latitude, longitude), as published in the Energy and Water Data Disclosure file.
How big is 303 WEST 42 STREET and when was it built?
303 WEST 42 STREET has 62,051 sq ft of gross floor area, as reported in its 2024 disclosure. The disclosure lists 1928 as its year built. It is classed as office.
Is 303 WEST 42 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, “303 WEST 42 STREET, New York City, New York — 2024 benchmarking disclosure”, https://buildingcensus.com/buildings/new-york-city/303-west-42-street-71182b10 (data as of October 2, 2026).