185 W 231 Street, Bronx
Multifamily Housing in New York City, NY · 185 W 231 St · 10463
At a glance
185 W 231 Street, Bronx is a 28,323-square-foot multifamily housing building in New York City, New York, built in 1951. In its 2024 New York City benchmarking disclosure it reported an ENERGY STAR score of 1 out of 100 (grade D), a site energy-use intensity of 92.6 kBtu/ft² and 260 tCO₂e of greenhouse-gas emissions. That score is higher than 0% 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 | 1 (band D) |
| Site EUI | 92.6 kBtu/ft² |
| Source EUI | 218.0 kBtu/ft² |
| GHG emissions | 260 tCO₂e |
| GHG intensity | 9.2 kgCO₂e/ft² |
| Electricity | 572,479 kWh |
| Natural gas | 6,707 therms |
| Gross floor area | 28,323 sq ft |
| Source record | nyc:16871868:2024 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2024latest | 1 | -10 | 92.6 kBtu/ft² | 260 tCO₂e |
| 2023 | 11 | -2 | 74.2 kBtu/ft² | 165 tCO₂e |
| 2022 | 13 | 81.9 kBtu/ft² | 153 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
- 185 W 231 St
- City
- New York City
- State
- New York
- ZIP
- 10463
- Coordinates
- 40.87867, -73.90410
Within ~1 km
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See also: most efficient in New York City · biggest emitters
How does 185 W 231 Street, Bronx 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. 185 W 231 Street, Bronx's ENERGY STAR score of 1 compares with an average of 63 across the 22,829 that report a score; it scores higher than 0% of them and lower than 97%. Its site EUI of 92.6 kBtu/ft² is about 24% 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 9.2 kgCO₂e/ft² is about 77% above the group average of 5.2 kgCO₂e/ft².
At 28,323 sq ft, it is about 72% 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 185 W 231 Street, Bronx's energy performance changed over time?
BuildingCensus holds 3 New York City disclosures for 185 W 231 Street, Bronx, covering report years 2022–2024. Its ENERGY STAR score went from 13 in 2022 to 1 in 2024 (-12 points); its best year on file was 2022, at 13. Site EUI moved from 81.9 kBtu/ft² (2022) to 92.6 kBtu/ft² (2024), an 13% increase. Reported emissions went from 153 tCO₂e to 260 tCO₂e over the same span (up 70%).
What does an ENERGY STAR score of 1 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: 1 is the bottom of the scale. BuildingCensus bands the score into report-card grades; 1 falls in band D — lowest band (1–54). It sits 74 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. 185 W 231 Street, Bronx's 92.6 kBtu/ft² across 28,323 sq ft works out to about 2.6 billion Btu (769 MWh-equivalent) in 2024. Its source EUI of 218.0 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 572,479 kWh of electricity and 6,707 therms of natural gas for the year.
Which law requires 185 W 231 Street, Bronx to report its energy use?
185 W 231 Street, Bronx 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:16871868:2024). 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
- Superior - 335 West 14th Street - Child Property· 28,321 sq ft · score 82 (B)
- 2008 Hughes Avenue· 28,320 sq ft · score 69 (C)
- Icon East 3 Street· 28,314 sq ft · score 86 (A)
- AAR: 170-12 Highland Ave· 28,304 sq ft · EUI 78.9 kBtu/ft²
- M&&L: 29-16 21st Ave· 28,303 sq ft · score 62 (C)
- 827-831 Lafayette Avenue· 28,300 sq ft · score 49 (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 185 W 231 Street, Bronx's energy grade?
185 W 231 Street, Bronx scores 1 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 185 W 231 Street, Bronx use?
Its 2024 site energy-use intensity was 92.6 kBtu/ft² (218.0 kBtu/ft² source) across 28,323 sq ft, including 572,479 kWh of electricity and 6,707 therms of natural gas.
What are 185 W 231 Street, Bronx's carbon emissions?
185 W 231 Street, Bronx reported 260 tCO₂e of greenhouse-gas emissions (9.2 kgCO₂e/ft²) for 2024.
Where is 185 W 231 Street, Bronx?
185 W 231 Street, Bronx is in New York City, New York 10463. Its coordinates are 40.87867, -73.90410 (latitude, longitude), as published in the Energy and Water Data Disclosure file.
How big is 185 W 231 Street, Bronx and when was it built?
185 W 231 Street, Bronx has 28,323 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 185 W 231 Street, Bronx 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, “185 W 231 Street, Bronx, New York City, New York — 2024 benchmarking disclosure”, https://buildingcensus.com/buildings/new-york-city/185-w-231-street-bronx-018e53e9 (data as of October 2, 2026).