270 Seaman Owners Corp.
Multifamily Housing in New York City, NY · 270 Seaman Ave · 10034
At a glance
270 Seaman Owners Corp. is a 52,800-square-foot multifamily housing building at 270 Seaman Ave in New York City, New York, built in 1926. In its 2024 New York City benchmarking disclosure it reported an ENERGY STAR score of 58 out of 100 (grade C), a site energy-use intensity of 76.4 kBtu/ft² and 259 tCO₂e of greenhouse-gas emissions. That score is higher than 39% of the 22,829 scored multifamily housing buildings in New York City.
Local Law 84 (LL84) · reporting year 2024
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | 58 (band C) |
| Site EUI | 76.4 kBtu/ft² |
| Source EUI | 104.3 kBtu/ft² |
| GHG emissions | 259 tCO₂e |
| GHG intensity | 4.9 kgCO₂e/ft² |
| Electricity | 212,640 kWh |
| Natural gas | 33,079 therms |
| Water use | 1,971 kgal |
| Gross floor area | 52,800 sq ft |
| Source record | nyc:21309902:2024 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2024latest | 58 | -41 | 76.4 kBtu/ft² | 259 tCO₂e |
| 2023 | 99 | -1 | 29.4 kBtu/ft² | 130 tCO₂e |
| 2022 | 100 | 16.2 kBtu/ft² | 69 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
- 270 Seaman Ave
- City
- New York City
- State
- New York
- ZIP
- 10034
- Coordinates
- 40.87203, -73.91783
Within ~1 km
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How does 270 Seaman Owners Corp. 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. 270 Seaman Owners Corp.'s ENERGY STAR score of 58 compares with an average of 63 across the 22,829 that report a score; it scores higher than 39% of them and lower than 60%. Its site EUI of 76.4 kBtu/ft² is roughly in line with the average of 74.9 kBtu/ft². Its emissions intensity of 4.9 kgCO₂e/ft² is roughly in line with the group average of 5.2 kgCO₂e/ft².
At 52,800 sq ft, it is about half of the average floor area of 100,951 sq ft for those buildings. It was built in 1926, 26 years earlier 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 270 Seaman Owners Corp.'s energy performance changed over time?
BuildingCensus holds 3 New York City disclosures for 270 Seaman Owners Corp., covering report years 2022–2024. Its ENERGY STAR score went from 100 in 2022 to 58 in 2024 (-42 points); its best year on file was 2022, at 100. Site EUI moved from 16.2 kBtu/ft² (2022) to 76.4 kBtu/ft² (2024), an 372% increase. Reported emissions went from 69 tCO₂e to 259 tCO₂e over the same span (up 275%).
What does an ENERGY STAR score of 58 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 58 means the building performs better than about 58% of its national peers. BuildingCensus bands the score into report-card grades; 58 falls in band C — below median (55–69). It sits 17 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. 270 Seaman Owners Corp.'s 76.4 kBtu/ft² across 52,800 sq ft works out to about 4 billion Btu (1,182 MWh-equivalent) in 2024. Its source EUI of 104.3 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 212,640 kWh of electricity, 33,079 therms of natural gas and 1,971 thousand gallons of water for the year.
Which law requires 270 Seaman Owners Corp. to report its energy use?
270 Seaman Owners Corp. 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:21309902:2024). 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
- 25 Bartlett Street· 52,796 sq ft · EUI 47.0 kBtu/ft²
- 25 BARTLETT STREET· 52,796 sq ft · EUI 40.5 kBtu/ft²
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- Multifamily Housing buildings in New York City· 33,022 benchmarked
- All New York City benchmarked buildings· Local Law 84 (LL84)
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- Least efficient large buildings in New York City
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Frequently asked questions
What is 270 Seaman Owners Corp.'s energy grade?
270 Seaman Owners Corp. scores 58 out of 100 on ENERGY STAR — band C, below median (55–69) — in its 2024 New York City disclosure. Scores are national percentiles against similar buildings; 75+ qualifies for ENERGY STAR certification.
How much energy does 270 Seaman Owners Corp. use?
Its 2024 site energy-use intensity was 76.4 kBtu/ft² (104.3 kBtu/ft² source) across 52,800 sq ft, including 212,640 kWh of electricity and 33,079 therms of natural gas.
What are 270 Seaman Owners Corp.'s carbon emissions?
270 Seaman Owners Corp. reported 259 tCO₂e of greenhouse-gas emissions (4.9 kgCO₂e/ft²) for 2024.
Where is 270 Seaman Owners Corp.?
270 Seaman Owners Corp. is at 270 Seaman Ave, in New York City, New York 10034. Its coordinates are 40.87203, -73.91783 (latitude, longitude), as published in the Energy and Water Data Disclosure file.
How big is 270 Seaman Owners Corp. and when was it built?
270 Seaman Owners Corp. has 52,800 sq ft of gross floor area, as reported in its 2024 disclosure. The disclosure lists 1926 as its year built. It is classed as multifamily housing.
Is 270 Seaman Owners Corp. 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, “270 Seaman Owners Corp., New York City, New York — 2024 benchmarking disclosure”, https://buildingcensus.com/buildings/new-york-city/270-seaman-owners-corp-31764df5 (data as of October 2, 2026).