309-321 Second Street
Multifamily Housing in New York City, NY · 309-321 2nd Street · 11215
At a glance
309-321 Second Street is a 25,462-square-foot multifamily housing building at 309-321 2nd Street in New York City, New York, built in 2008. In its 2023 New York City benchmarking disclosure it reported an ENERGY STAR score of 93 out of 100 (grade A), a site energy-use intensity of 23.7 kBtu/ft² and 66 tCO₂e of greenhouse-gas emissions. That score is higher than 80% 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 | 93 (band A) |
| Site EUI | 23.7 kBtu/ft² |
| Source EUI | 66.4 kBtu/ft² |
| GHG emissions | 66 tCO₂e |
| GHG intensity | 2.6 kgCO₂e/ft² |
| Electricity | 176,845 kWh |
| Gross floor area | 25,462 sq ft |
| Source record | nyc:26119562:2023 |
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
- 309-321 2nd Street
- City
- New York City
- State
- New York
- ZIP
- 11215
- Coordinates
- 40.67407, -73.98415
Within ~1 km
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See also: most efficient in New York City · biggest emitters
How does 309-321 Second Street 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. 309-321 Second Street's ENERGY STAR score of 93 compares with an average of 63 across the 22,829 that report a score; it scores higher than 80% of them and lower than 18%. Its site EUI of 23.7 kBtu/ft² is about 68% 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 2.6 kgCO₂e/ft² is about half of the group average of 5.2 kgCO₂e/ft².
At 25,462 sq ft, it is about 75% below the average floor area of 100,951 sq ft for those buildings. It was built in 2008, 56 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 93 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 93 means the building performs better than about 93% of its national peers. BuildingCensus bands the score into report-card grades; 93 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. 309-321 Second Street's 23.7 kBtu/ft² across 25,462 sq ft works out to about 0.6 billion Btu (177 MWh-equivalent) in 2023. Its source EUI of 66.4 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 176,845 kWh of electricity for the year.
Which law requires 309-321 Second Street to report its energy use?
309-321 Second 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 2023 disclosure (source record nyc:26119562:2023). 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
- A02670 - One Three Nine Skillman Condominium· 25,461 sq ft
- 9 East 16th Street· 25,460 sq ft · EUI 53.0 kBtu/ft²
- Living - 5-7 Mercer St· 25,460 sq ft · EUI 19.1 kBtu/ft²
- 6 West 107th Street· 25,452 sq ft · score 39 (D)
- 115 Lorimer· 25,452 sq ft · EUI 68.9 kBtu/ft²
- 115 Lorimer· 25,452 sq ft · EUI 73.8 kBtu/ft²
- 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 309-321 Second Street's energy grade?
309-321 Second Street scores 93 out of 100 on ENERGY STAR — band A, high performer (85–100) — in its 2023 New York City disclosure. Scores are national percentiles against similar buildings; 75+ qualifies for ENERGY STAR certification.
How much energy does 309-321 Second Street use?
Its 2023 site energy-use intensity was 23.7 kBtu/ft² (66.4 kBtu/ft² source) across 25,462 sq ft, including 176,845 kWh of electricity.
What are 309-321 Second Street's carbon emissions?
309-321 Second Street reported 66 tCO₂e of greenhouse-gas emissions (2.6 kgCO₂e/ft²) for 2023.
Where is 309-321 Second Street?
309-321 Second Street is at 309-321 2nd Street, in New York City, New York 11215. Its coordinates are 40.67407, -73.98415 (latitude, longitude), as published in the Energy and Water Data Disclosure file.
How big is 309-321 Second Street and when was it built?
309-321 Second Street has 25,462 sq ft of gross floor area, as reported in its 2023 disclosure. The disclosure lists 2008 as its year built. It is classed as multifamily housing.
Is 309-321 Second Street 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, “309-321 Second Street, New York City, New York — 2023 benchmarking disclosure”, https://buildingcensus.com/buildings/new-york-city/309-321-second-street-93249239 (data as of October 2, 2026).