340 West 31st Street
Parking in New York City, NY · 340 WEST 31 STREET · 10001
At a glance
340 West 31st Street is a 82,760-square-foot parking building at 340 WEST 31 STREET in New York City, New York, built in 1972. In its 2024 New York City benchmarking disclosure it reported a site energy-use intensity of 5.5 kBtu/ft² and 52 tCO₂e of greenhouse-gas emissions.
Local Law 84 (LL84) · reporting year 2024
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | — |
| Site EUI | 5.5 kBtu/ft² |
| Source EUI | 15.4 kBtu/ft² |
| GHG emissions | 52 tCO₂e |
| GHG intensity | 0.6 kgCO₂e/ft² |
| Electricity | 132,990 kWh |
| Water use | 104 kgal |
| Gross floor area | 82,760 sq ft |
| Source record | nyc:2955755:2024 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2024latest | — | 5.5 kBtu/ft² | 52 tCO₂e | |
| 2023 | — | 5.3 kBtu/ft² | 48 tCO₂e | |
| 2022 | — | 6.5 kBtu/ft² | 46 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
- 340 WEST 31 STREET
- City
- New York City
- State
- New York
- ZIP
- 10001
- Coordinates
- 40.75081, -73.99608
Within ~1 km
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- 50 Hudson Yardsscore 76
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See also: most efficient in New York City · biggest emitters
How does 340 West 31st Street compare with other parking buildings in New York City?
The latest disclosures cover 301 parking buildings in New York City, out of 48,310 buildings citywide. Its site EUI of 5.5 kBtu/ft² is about 86% below the average of 39.8 kBtu/ft² — it uses less energy per square foot than the typical building in that group. Its emissions intensity of 0.6 kgCO₂e/ft² is about 83% below the group average of 3.7 kgCO₂e/ft².
At 82,760 sq ft, it is about 12% below the average floor area of 93,719 sq ft for those buildings. It was built in 1972, 15 years later than the group's average year built (1957). Across all 24 jurisdictions BuildingCensus covers, the 1,071 parking buildings average an ENERGY STAR score of 67 and a site EUI of 40.3 kBtu/ft².
How has 340 West 31st Street's energy performance changed over time?
BuildingCensus holds 3 New York City disclosures for 340 West 31st Street, covering report years 2022–2024. Site EUI moved from 6.5 kBtu/ft² (2022) to 5.5 kBtu/ft² (2024), a 15% decrease. Reported emissions went from 46 tCO₂e to 52 tCO₂e over the same span (up 14%).
What does a site EUI of 5.5 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. 340 West 31st Street's 5.5 kBtu/ft² across 82,760 sq ft works out to about 0.5 billion Btu (133 MWh-equivalent) in 2024. Its source EUI of 15.4 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 132,990 kWh of electricity and 104 thousand gallons of water for the year.
Which law requires 340 West 31st Street to report its energy use?
340 West 31st 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:2955755:2024). 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 parking buildings in New York City
- Garage: 142 East 31st· 81,000 sq ft · EUI 7.1 kBtu/ft²
- DOT_5252_Jerome Gun Hill Parking Garage· 78,600 sq ft · EUI 4.8 kBtu/ft²
- Maimonides - 4723 10th Avenue· 78,230 sq ft · EUI 215.7 kBtu/ft²
- 141 West 43rd Street· 77,000 sq ft · EUI 20.2 kBtu/ft²
- DOT_4578_Queens Family Court Parking Garage· 73,885 sq ft · EUI 13.0 kBtu/ft²
- 4320 Broadway· 72,608 sq ft · EUI 150.8 kBtu/ft²
- Parking buildings in New York City· 301 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 340 West 31st Street's energy grade?
340 West 31st Street did not report an ENERGY STAR score in its 2024 disclosure, but its site energy-use intensity was 5.5 kBtu/ft².
How much energy does 340 West 31st Street use?
Its 2024 site energy-use intensity was 5.5 kBtu/ft² (15.4 kBtu/ft² source) across 82,760 sq ft, including 132,990 kWh of electricity.
What are 340 West 31st Street's carbon emissions?
340 West 31st Street reported 52 tCO₂e of greenhouse-gas emissions (0.6 kgCO₂e/ft²) for 2024.
Where is 340 West 31st Street?
340 West 31st Street is at 340 WEST 31 STREET, in New York City, New York 10001. Its coordinates are 40.75081, -73.99608 (latitude, longitude), as published in the Energy and Water Data Disclosure file.
How big is 340 West 31st Street and when was it built?
340 West 31st Street has 82,760 sq ft of gross floor area, as reported in its 2024 disclosure. The disclosure lists 1972 as its year built. It is classed as parking.
Is 340 West 31st 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, “340 West 31st Street, New York City, New York — 2024 benchmarking disclosure”, https://buildingcensus.com/buildings/new-york-city/340-west-31st-street-5e8bface (data as of October 2, 2026).