340 Neptune Avenue
Multifamily Housing in New York City, NY · 11235
At a glance
340 Neptune Avenue is a 18,951-square-foot multifamily housing building in New York City, New York, built in 2016. In its 2023 New York City benchmarking disclosure it reported an ENERGY STAR score of 10 out of 100 (grade D), a site energy-use intensity of 56.8 kBtu/ft² and 117 tCO₂e of greenhouse-gas emissions. That score is higher than 7% of the 22,829 scored multifamily housing buildings in New York City.
Local Law 84 (LL84) · reporting year 2023
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | 10 (band D) |
| Site EUI | 56.8 kBtu/ft² |
| Source EUI | 159.0 kBtu/ft² |
| GHG emissions | 117 tCO₂e |
| GHG intensity | 6.2 kgCO₂e/ft² |
| Electricity | 315,458 kWh |
| Gross floor area | 18,951 sq ft |
| Source record | nyc:33949700:2023 |
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 Neptune Avenue
- City
- New York City
- State
- New York
- ZIP
- 11235
- Coordinates
- 40.58080, -73.96535
Within ~1 km
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See also: most efficient in New York City · biggest emitters
How does 340 Neptune Avenue 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. 340 Neptune Avenue's ENERGY STAR score of 10 compares with an average of 63 across the 22,829 that report a score; it scores higher than 7% of them and lower than 92%. Its site EUI of 56.8 kBtu/ft² is about 24% below the average of 74.9 kBtu/ft² — it uses less energy per square foot than the typical building in that group. Its emissions intensity of 6.2 kgCO₂e/ft² is about 19% above the group average of 5.2 kgCO₂e/ft².
At 18,951 sq ft, it is about 81% below the average floor area of 100,951 sq ft for those buildings. It was built in 2016, 64 years later 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.
What does an ENERGY STAR score of 10 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 10 means the building performs better than about 10% of its national peers. BuildingCensus bands the score into report-card grades; 10 falls in band D — lowest band (1–54). It sits 65 points below 75, the threshold for ENERGY STAR certification. 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. 340 Neptune Avenue's 56.8 kBtu/ft² across 18,951 sq ft works out to about 1.1 billion Btu (315 MWh-equivalent) in 2023. Its source EUI of 159.0 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 315,458 kWh of electricity for the year.
Which law requires 340 Neptune Avenue to report its energy use?
340 Neptune Avenue 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 2023 disclosure (source record nyc:33949700:2023). 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
- 275 E 168th St· 18,936 sq ft · score 10 (D)
- 204 West 106 Street· 18,930 sq ft · score 100 (A)
- Betances IV 417-431 E146th Street· 18,853 sq ft
- SAMUEL (CITY) - Bldg 24· 18,835 sq ft · EUI 111.6 kBtu/ft²
- 570 St. Mary's St· 18,825 sq ft · score 82 (B)
- 518 W 161st St· 18,810 sq ft · score 100 (A)
- 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 340 Neptune Avenue's energy grade?
340 Neptune Avenue scores 10 out of 100 on ENERGY STAR — band D, lowest band (1–54) — in its 2023 New York City disclosure. Scores are national percentiles against similar buildings; 75+ qualifies for ENERGY STAR certification.
How much energy does 340 Neptune Avenue use?
Its 2023 site energy-use intensity was 56.8 kBtu/ft² (159.0 kBtu/ft² source) across 18,951 sq ft, including 315,458 kWh of electricity.
What are 340 Neptune Avenue's carbon emissions?
340 Neptune Avenue reported 117 tCO₂e of greenhouse-gas emissions (6.2 kgCO₂e/ft²) for 2023.
Where is 340 Neptune Avenue?
340 Neptune Avenue is in New York City, New York 11235. Its coordinates are 40.58080, -73.96535 (latitude, longitude), as published in the Energy and Water Data Disclosure file.
How big is 340 Neptune Avenue and when was it built?
340 Neptune Avenue has 18,951 sq ft of gross floor area, as reported in its 2023 disclosure. The disclosure lists 2016 as its year built. It is classed as multifamily housing.
Is 340 Neptune Avenue covered by Local Law 84 (LL84)?
Yes — it appears in the 2023 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 Neptune Avenue, New York City, New York — 2023 benchmarking disclosure”, https://buildingcensus.com/buildings/new-york-city/340-neptune-avenue-1aae5e7d (data as of October 2, 2026).