CASTLE HILL
Multifamily Housing in New York City, NY · 2140 SEWARD AVENUE · 10473
At a glance
CASTLE HILL is a 2,213,014-square-foot multifamily housing building at 2140 SEWARD AVENUE in New York City, New York, built in 1960. In its 2024 New York City benchmarking disclosure it reported an ENERGY STAR score of 18 out of 100 (grade D), a site energy-use intensity of 122.3 kBtu/ft² and 17,604 tCO₂e of greenhouse-gas emissions. That score is higher than 11% 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 | 18 (band D) |
| Site EUI | 122.3 kBtu/ft² |
| Source EUI | 169.6 kBtu/ft² |
| GHG emissions | 17,604 tCO₂e |
| GHG intensity | 8.0 kgCO₂e/ft² |
| Electricity | 15,267,770 kWh |
| Natural gas | 2,185,673 therms |
| Gross floor area | 2,213,014 sq ft |
| Source record | nyc:2830988:2024 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2024latest | 18 | +5 | 122.3 kBtu/ft² | 17,604 tCO₂e |
| 2023 | 13 | -29 | 127.3 kBtu/ft² | 17,830 tCO₂e |
| 2022 | 42 | 126.6 kBtu/ft² | 15,455 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
- 2140 SEWARD AVENUE
- City
- New York City
- State
- New York
- ZIP
- 10473
- Coordinates
- 40.82078, -73.85101
Within ~1 km
Nearby benchmarked buildings
- Jamie Towersscore 38
Multifamily Housing · 658,326 sq ft
- Castle Hill - Bldgs 5-8score —
Multifamily Housing · 627,300 sq ft
- Castle Hill - Bldgs 11-14score —
Multifamily Housing · 625,900 sq ft
Multifamily Housing · 598,475 sq ft
K-12 School · 446,400 sq ft
- 2001 STORY AVENUEscore 37
Multifamily Housing · 421,843 sq ft
See also: most efficient in New York City · biggest emitters
How does CASTLE HILL 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. CASTLE HILL's ENERGY STAR score of 18 compares with an average of 63 across the 22,829 that report a score; it scores higher than 11% of them and lower than 89%. Its site EUI of 122.3 kBtu/ft² is about 63% 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 8.0 kgCO₂e/ft² is about 53% above the group average of 5.2 kgCO₂e/ft².
At 2,213,014 sq ft, it is about 2092% above the average floor area of 100,951 sq ft for those buildings. It was built in 1960, 8 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 CASTLE HILL's energy performance changed over time?
BuildingCensus holds 3 New York City disclosures for CASTLE HILL, covering report years 2022–2024. Its ENERGY STAR score went from 42 in 2022 to 18 in 2024 (-24 points); its best year on file was 2022, at 42. Site EUI moved from 126.6 kBtu/ft² (2022) to 122.3 kBtu/ft² (2024), a 3% decrease. Reported emissions went from 15,455 tCO₂e to 17,604 tCO₂e over the same span (up 14%).
What does an ENERGY STAR score of 18 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 18 means the building performs better than about 18% of its national peers. BuildingCensus bands the score into report-card grades; 18 falls in band D — lowest band (1–54). It sits 57 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. CASTLE HILL's 122.3 kBtu/ft² across 2,213,014 sq ft works out to about 270.7 billion Btu (79,320 MWh-equivalent) in 2024. Its source EUI of 169.6 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 15,267,770 kWh of electricity and 2,185,673 therms of natural gas for the year.
Which law requires CASTLE HILL to report its energy use?
CASTLE HILL 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:2830988:2024). 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
- RAVENSWOOD CAMPUS· 2,197,500 sq ft · score 11 (D)
- Waterline Square Campus (2 RIVERSIDE BOULEVARD)· 2,162,937 sq ft · score 47 (D)
- SHEEPSHEAD BAY/NOSTRAND CAMPUS· 2,159,000 sq ft · score 5 (D)
- SMITH· 2,149,568 sq ft · score 30 (D)
- BARUCH/BARUCH HOUSES ADDITION· 2,135,564 sq ft · EUI 90.2 kBtu/ft²
- BARUCH/BARUCH HOUSES ADDITION - Oil· 2,134,664 sq ft · EUI 2.8 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 CASTLE HILL's energy grade?
CASTLE HILL scores 18 out of 100 on ENERGY STAR — band D, lowest band (1–54) — in its 2024 New York City disclosure. Scores are national percentiles against similar buildings; 75+ qualifies for ENERGY STAR certification.
How much energy does CASTLE HILL use?
Its 2024 site energy-use intensity was 122.3 kBtu/ft² (169.6 kBtu/ft² source) across 2,213,014 sq ft, including 15,267,770 kWh of electricity and 2,185,673 therms of natural gas.
What are CASTLE HILL's carbon emissions?
CASTLE HILL reported 17,604 tCO₂e of greenhouse-gas emissions (8.0 kgCO₂e/ft²) for 2024.
Where is CASTLE HILL?
CASTLE HILL is at 2140 SEWARD AVENUE, in New York City, New York 10473. Its coordinates are 40.82078, -73.85101 (latitude, longitude), as published in the Energy and Water Data Disclosure file.
How big is CASTLE HILL and when was it built?
CASTLE HILL has 2,213,014 sq ft of gross floor area, as reported in its 2024 disclosure. The disclosure lists 1960 as its year built. It is classed as multifamily housing.
Is CASTLE HILL 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, “CASTLE HILL, New York City, New York — 2024 benchmarking disclosure”, https://buildingcensus.com/buildings/new-york-city/castle-hill-658eb155 (data as of October 2, 2026).