Seward Park Extension - Bldg 2
Multifamily Housing in New York City, NY · 154 Broome STREET · 10002
At a glance
Seward Park Extension - Bldg 2 is a 178,344-square-foot multifamily housing building at 154 Broome STREET in New York City, New York, built in 1973. In its 2024 New York City benchmarking disclosure it reported a site energy-use intensity of 136.9 kBtu/ft² and 1,541 tCO₂e of greenhouse-gas emissions.
Local Law 84 (LL84) · reporting year 2024
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | — |
| Site EUI | 136.9 kBtu/ft² |
| Source EUI | 182.4 kBtu/ft² |
| GHG emissions | 1,541 tCO₂e |
| GHG intensity | 8.6 kgCO₂e/ft² |
| Electricity | 1,155,024 kWh |
| Natural gas | 204,761 therms |
| Water use | 21,181 kgal |
| Gross floor area | 178,344 sq ft |
| Source record | nyc:33932394:2024 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2024latest | — | 136.9 kBtu/ft² | 1,541 tCO₂e | |
| 2023 | — | 145.5 kBtu/ft² | 1,601 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.
Own or manage this building? Claim it to correct the record and get compliance alerts.
Location
- Address
- 154 Broome STREET
- City
- New York City
- State
- New York
- ZIP
- 10002
- Coordinates
- 40.71651, -73.98489
Within ~1 km
Nearby benchmarked buildings
- Cooperative Villagescore —
Multifamily Housing · 2,281,305 sq ft
- WALDscore —
Multifamily Housing · 1,702,331 sq ft
- 225 CHERRY STREETscore 40
Multifamily Housing · 1,451,246 sq ft
Multifamily Housing · 1,391,256 sq ft
- VLADECK/VLADECK II CAMPUSscore 12
Multifamily Housing · 1,391,256 sq ft
- 75 Columbia Street - 41109score 22
Multifamily Housing · 1,310,298 sq ft
See also: most efficient in New York City · biggest emitters
How does Seward Park Extension - Bldg 2 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 136.9 kBtu/ft² is about 83% above the average of 74.9 kBtu/ft² — it uses more energy per square foot than the typical building in that group. Its emissions intensity of 8.6 kgCO₂e/ft² is about 66% above the group average of 5.2 kgCO₂e/ft².
At 178,344 sq ft, it is about 77% above the average floor area of 100,951 sq ft for those buildings. It was built in 1973, 21 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.
How has Seward Park Extension - Bldg 2's energy performance changed over time?
BuildingCensus holds 2 New York City disclosures for Seward Park Extension - Bldg 2, covering report years 2023–2024. Site EUI moved from 145.5 kBtu/ft² (2023) to 136.9 kBtu/ft² (2024), a 6% decrease. Reported emissions went from 1,601 tCO₂e to 1,541 tCO₂e over the same span (down 4%).
What does a site EUI of 136.9 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. Seward Park Extension - Bldg 2's 136.9 kBtu/ft² across 178,344 sq ft works out to about 24.4 billion Btu (7,155 MWh-equivalent) in 2024. Its source EUI of 182.4 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 1,155,024 kWh of electricity, 204,761 therms of natural gas and 21,181 thousand gallons of water for the year.
Which law requires Seward Park Extension - Bldg 2 to report its energy use?
Seward Park Extension - Bldg 2 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:33932394:2024). 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
- Centria (18 West 48th Street)· 178,328 sq ft · score 42 (D)
- 27-40 Hoyt Avenue South· 178,312 sq ft · score 90 (A)
- AKAM - 440 West End Avenue· 178,311 sq ft · score 89 (A)
- AUDUBON· 178,300 sq ft · score 1 (D)
- Wavecrest CHILD - 951 Hoe Avenue· 178,296 sq ft
- Wavecrest CHILD - 941 Hoe Avenue· 178,295 sq ft
- 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 Seward Park Extension - Bldg 2's energy grade?
Seward Park Extension - Bldg 2 did not report an ENERGY STAR score in its 2024 disclosure, but its site energy-use intensity was 136.9 kBtu/ft².
How much energy does Seward Park Extension - Bldg 2 use?
Its 2024 site energy-use intensity was 136.9 kBtu/ft² (182.4 kBtu/ft² source) across 178,344 sq ft, including 1,155,024 kWh of electricity and 204,761 therms of natural gas.
What are Seward Park Extension - Bldg 2's carbon emissions?
Seward Park Extension - Bldg 2 reported 1,541 tCO₂e of greenhouse-gas emissions (8.6 kgCO₂e/ft²) for 2024.
Where is Seward Park Extension - Bldg 2?
Seward Park Extension - Bldg 2 is at 154 Broome STREET, in New York City, New York 10002. Its coordinates are 40.71651, -73.98489 (latitude, longitude), as published in the Energy and Water Data Disclosure file.
How big is Seward Park Extension - Bldg 2 and when was it built?
Seward Park Extension - Bldg 2 has 178,344 sq ft of gross floor area, as reported in its 2024 disclosure. The disclosure lists 1973 as its year built. It is classed as multifamily housing.
Is Seward Park Extension - Bldg 2 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).
Working with New York City building benchmarking records? Pro adds alerts, change history and CSV export ($49/mo); Enterprise adds full national files, the API and an MCP server for AI tools.
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, “Seward Park Extension - Bldg 2, New York City, New York — 2024 benchmarking disclosure”, https://buildingcensus.com/buildings/new-york-city/seward-park-extension-bldg-2-2dfd11b4 (data as of October 2, 2026).