OCEAN BAY APARTMENTS - 309 BEACH GEN
Multifamily Housing in New York City, NY · 309 BEACH 54TH ST, GEN ARVERNE NY 11692 · 11692
At a glance
OCEAN BAY APARTMENTS - 309 BEACH GEN is a 60,000-square-foot multifamily housing building at 309 BEACH 54TH ST, GEN ARVERNE NY 11692 in New York City, New York, built in 1951. In its 2024 New York City benchmarking disclosure it reported a site energy-use intensity of 18.7 kBtu/ft² and 128 tCO₂e of greenhouse-gas emissions.
Local Law 84 (LL84) · reporting year 2024
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | — |
| Site EUI | 18.7 kBtu/ft² |
| Source EUI | 52.0 kBtu/ft² |
| GHG emissions | 128 tCO₂e |
| GHG intensity | 2.1 kgCO₂e/ft² |
| Electricity | 325,085 kWh |
| Natural gas | 118 therms |
| Gross floor area | 60,000 sq ft |
| Source record | nyc:33980161:2024 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2024latest | — | 18.7 kBtu/ft² | 128 tCO₂e | |
| 2023 | — | 20.1 kBtu/ft² | 131 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
- 309 BEACH 54TH ST, GEN ARVERNE NY 11692
- City
- New York City
- State
- New York
- ZIP
- 11692
- Coordinates
- 40.59299, -73.78436
Within ~1 km
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See also: most efficient in New York City · biggest emitters
How does OCEAN BAY APARTMENTS - 309 BEACH GEN 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. Its site EUI of 18.7 kBtu/ft² is about 75% 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 2.1 kgCO₂e/ft² is about 59% below the group average of 5.2 kgCO₂e/ft².
At 60,000 sq ft, it is about 41% below the average floor area of 100,951 sq ft for those buildings. Its 1951 construction date is close to 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.
How has OCEAN BAY APARTMENTS - 309 BEACH GEN's energy performance changed over time?
BuildingCensus holds 2 New York City disclosures for OCEAN BAY APARTMENTS - 309 BEACH GEN, covering report years 2023–2024. Site EUI moved from 20.1 kBtu/ft² (2023) to 18.7 kBtu/ft² (2024), a 7% decrease. Reported emissions went from 131 tCO₂e to 128 tCO₂e over the same span (down 2%).
What does a site EUI of 18.7 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. OCEAN BAY APARTMENTS - 309 BEACH GEN's 18.7 kBtu/ft² across 60,000 sq ft works out to about 1.1 billion Btu (329 MWh-equivalent) in 2024. Its source EUI of 52.0 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 325,085 kWh of electricity and 118 therms of natural gas for the year.
Which law requires OCEAN BAY APARTMENTS - 309 BEACH GEN to report its energy use?
OCEAN BAY APARTMENTS - 309 BEACH GEN 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:33980161:2024). 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 multifamily housing buildings in New York City
- ABC: 305 West 72nd· 59,999 sq ft · score 69 (C)
- 487 Keap Street· 59,996 sq ft · score 84 (B)
- 138-49 Barclay Ave· 59,993 sq ft · score 70 (B)
- Exact - 301 West 150th Street· 59,989 sq ft · score 80 (B)
- Salem House· 59,987 sq ft · EUI 71.4 kBtu/ft²
- 145 South 3rd Street· 59,983 sq ft · score 41 (D)
- 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 OCEAN BAY APARTMENTS - 309 BEACH GEN's energy grade?
OCEAN BAY APARTMENTS - 309 BEACH GEN did not report an ENERGY STAR score in its 2024 disclosure, but its site energy-use intensity was 18.7 kBtu/ft².
How much energy does OCEAN BAY APARTMENTS - 309 BEACH GEN use?
Its 2024 site energy-use intensity was 18.7 kBtu/ft² (52.0 kBtu/ft² source) across 60,000 sq ft, including 325,085 kWh of electricity and 118 therms of natural gas.
What are OCEAN BAY APARTMENTS - 309 BEACH GEN's carbon emissions?
OCEAN BAY APARTMENTS - 309 BEACH GEN reported 128 tCO₂e of greenhouse-gas emissions (2.1 kgCO₂e/ft²) for 2024.
Where is OCEAN BAY APARTMENTS - 309 BEACH GEN?
OCEAN BAY APARTMENTS - 309 BEACH GEN is at 309 BEACH 54TH ST, GEN ARVERNE NY 11692, in New York City, New York 11692. Its coordinates are 40.59299, -73.78436 (latitude, longitude), as published in the Energy and Water Data Disclosure file.
How big is OCEAN BAY APARTMENTS - 309 BEACH GEN and when was it built?
OCEAN BAY APARTMENTS - 309 BEACH GEN has 60,000 sq ft of gross floor area, as reported in its 2024 disclosure. The disclosure lists 1951 as its year built. It is classed as multifamily housing.
Is OCEAN BAY APARTMENTS - 309 BEACH GEN 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, “OCEAN BAY APARTMENTS - 309 BEACH GEN, New York City, New York — 2024 benchmarking disclosure”, https://buildingcensus.com/buildings/new-york-city/ocean-bay-apartments-309-beach-gen-ece8a6ff (data as of October 2, 2026).