184th Realty Group LLC
Multifamily Housing in New York City, NY · 450 E 184th St · 10458
At a glance
184th Realty Group LLC is a 40,000-square-foot multifamily housing building at 450 E 184th St in New York City, New York, built in 1930. In its 2024 New York City benchmarking disclosure it reported an ENERGY STAR score of 19 out of 100 (grade D), a site energy-use intensity of 102.7 kBtu/ft² and 256 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 | 19 (band D) |
| Site EUI | 102.7 kBtu/ft² |
| Source EUI | 134.6 kBtu/ft² |
| GHG emissions | 256 tCO₂e |
| GHG intensity | 6.4 kgCO₂e/ft² |
| Electricity | 178,932 kWh |
| Natural gas | 34,984 therms |
| Water use | 8,979 kgal |
| Gross floor area | 40,000 sq ft |
| Source record | nyc:6222411:2024 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2024latest | 19 | -78 | 102.7 kBtu/ft² | 256 tCO₂e |
| 2023 | 97 | +80 | 36.4 kBtu/ft² | 109 tCO₂e |
| 2022 | 17 | 112.2 kBtu/ft² | 257 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
- 450 E 184th St
- City
- New York City
- State
- New York
- ZIP
- 10458
- Coordinates
- 40.85619, -73.89355
Within ~1 km
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How does 184th Realty Group LLC 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. 184th Realty Group LLC's ENERGY STAR score of 19 compares with an average of 63 across the 22,829 that report a score; it scores higher than 11% of them and lower than 88%. Its site EUI of 102.7 kBtu/ft² is about 37% 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 6.4 kgCO₂e/ft² is about 23% above the group average of 5.2 kgCO₂e/ft².
At 40,000 sq ft, it is about 60% below the average floor area of 100,951 sq ft for those buildings. It was built in 1930, 22 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 184th Realty Group LLC's energy performance changed over time?
BuildingCensus holds 3 New York City disclosures for 184th Realty Group LLC, covering report years 2022–2024. Its ENERGY STAR score went from 17 in 2022 to 19 in 2024 (+2 points); its best year on file was 2023, at 97. Site EUI moved from 112.2 kBtu/ft² (2022) to 102.7 kBtu/ft² (2024), a 8% decrease. Reported emissions went from 257 tCO₂e to 256 tCO₂e over the same span (down 0%).
What does an ENERGY STAR score of 19 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 19 means the building performs better than about 19% of its national peers. BuildingCensus bands the score into report-card grades; 19 falls in band D — lowest band (1–54). It sits 56 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. 184th Realty Group LLC's 102.7 kBtu/ft² across 40,000 sq ft works out to about 4.1 billion Btu (1,204 MWh-equivalent) in 2024. Its source EUI of 134.6 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 178,932 kWh of electricity, 34,984 therms of natural gas and 8,979 thousand gallons of water for the year.
Which law requires 184th Realty Group LLC to report its energy use?
184th Realty Group LLC 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:6222411:2024). 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
- Andrews: 682 Broadway· 39,997 sq ft · EUI 31.4 kBtu/ft²
- 150 St. Nicholas· 39,992 sq ft · score 4 (D)
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- Astoria Broadway Holdings LLC· 39,988 sq ft · score 77 (B)
- Astoria Broadway Holdings - 21-34 Broadway· 39,988 sq ft · score 53 (D)
- 4200 Herkimer Place· 39,969 sq ft · score 100 (A)
- 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 184th Realty Group LLC's energy grade?
184th Realty Group LLC scores 19 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 184th Realty Group LLC use?
Its 2024 site energy-use intensity was 102.7 kBtu/ft² (134.6 kBtu/ft² source) across 40,000 sq ft, including 178,932 kWh of electricity and 34,984 therms of natural gas.
What are 184th Realty Group LLC's carbon emissions?
184th Realty Group LLC reported 256 tCO₂e of greenhouse-gas emissions (6.4 kgCO₂e/ft²) for 2024.
Where is 184th Realty Group LLC?
184th Realty Group LLC is at 450 E 184th St, in New York City, New York 10458. Its coordinates are 40.85619, -73.89355 (latitude, longitude), as published in the Energy and Water Data Disclosure file.
How big is 184th Realty Group LLC and when was it built?
184th Realty Group LLC has 40,000 sq ft of gross floor area, as reported in its 2024 disclosure. The disclosure lists 1930 as its year built. It is classed as multifamily housing.
Is 184th Realty Group LLC 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, “184th Realty Group LLC, New York City, New York — 2024 benchmarking disclosure”, https://buildingcensus.com/buildings/new-york-city/184th-realty-group-llc-38d822ec (data as of October 2, 2026).