101 Realty LLC
Multifamily Housing in New York City, NY · 101 East 179th Street · 10453
At a glance
101 Realty LLC is a 32,900-square-foot multifamily housing building at 101 East 179th Street in New York City, New York, built in 1923. In its 2024 New York City benchmarking disclosure it reported an ENERGY STAR score of 2 out of 100 (grade D), a site energy-use intensity of 135.9 kBtu/ft² and 274 tCO₂e of greenhouse-gas emissions. That score is higher than 3% 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 | 2 (band D) |
| Site EUI | 135.9 kBtu/ft² |
| Source EUI | 174.1 kBtu/ft² |
| GHG emissions | 274 tCO₂e |
| GHG intensity | 8.3 kgCO₂e/ft² |
| Electricity | 173,109 kWh |
| Natural gas | 38,795 therms |
| Water use | 10,357 kgal |
| Gross floor area | 32,900 sq ft |
| Source record | nyc:6376141:2024 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2024latest | 2 | -4 | 135.9 kBtu/ft² | 274 tCO₂e |
| 2023 | 6 | -3 | 114.4 kBtu/ft² | 229 tCO₂e |
| 2022 | 9 | 116.1 kBtu/ft² | 220 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
- 101 East 179th Street
- City
- New York City
- State
- New York
- ZIP
- 10453
- Coordinates
- 40.85175, -73.90670
Within ~1 km
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See also: most efficient in New York City · biggest emitters
How does 101 Realty 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. 101 Realty LLC's ENERGY STAR score of 2 compares with an average of 63 across the 22,829 that report a score; it scores higher than 3% of them and lower than 97%. Its site EUI of 135.9 kBtu/ft² is about 81% 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 8.3 kgCO₂e/ft² is about 60% above the group average of 5.2 kgCO₂e/ft².
At 32,900 sq ft, it is about 67% below the average floor area of 100,951 sq ft for those buildings. It was built in 1923, 29 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 101 Realty LLC's energy performance changed over time?
BuildingCensus holds 3 New York City disclosures for 101 Realty LLC, covering report years 2022–2024. Its ENERGY STAR score went from 9 in 2022 to 2 in 2024 (-7 points); its best year on file was 2022, at 9. Site EUI moved from 116.1 kBtu/ft² (2022) to 135.9 kBtu/ft² (2024), an 17% increase. Reported emissions went from 220 tCO₂e to 274 tCO₂e over the same span (up 24%).
What does an ENERGY STAR score of 2 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 2 means the building performs better than about 2% of its national peers. BuildingCensus bands the score into report-card grades; 2 falls in band D — lowest band (1–54). It sits 73 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. 101 Realty LLC's 135.9 kBtu/ft² across 32,900 sq ft works out to about 4.5 billion Btu (1,310 MWh-equivalent) in 2024. Its source EUI of 174.1 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 173,109 kWh of electricity, 38,795 therms of natural gas and 10,357 thousand gallons of water for the year.
Which law requires 101 Realty LLC to report its energy use?
101 Realty 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:6376141:2024). 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
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- 2160 Newbold Realty LLC· 32,899 sq ft · score 59 (C)
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- 1165 Shakespeare Avenue· 32,898 sq ft · score 37 (D)
- 610 West 173rd Street· 32,896 sq ft · score 81 (B)
- ANIA Property Management Inc.: 29-06 21st Ave· 32,896 sq ft · score 50 (D)
- 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
- Biggest emitters in New York City
Frequently asked questions
What is 101 Realty LLC's energy grade?
101 Realty LLC scores 2 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 101 Realty LLC use?
Its 2024 site energy-use intensity was 135.9 kBtu/ft² (174.1 kBtu/ft² source) across 32,900 sq ft, including 173,109 kWh of electricity and 38,795 therms of natural gas.
What are 101 Realty LLC's carbon emissions?
101 Realty LLC reported 274 tCO₂e of greenhouse-gas emissions (8.3 kgCO₂e/ft²) for 2024.
Where is 101 Realty LLC?
101 Realty LLC is at 101 East 179th Street, in New York City, New York 10453. Its coordinates are 40.85175, -73.90670 (latitude, longitude), as published in the Energy and Water Data Disclosure file.
How big is 101 Realty LLC and when was it built?
101 Realty LLC has 32,900 sq ft of gross floor area, as reported in its 2024 disclosure. The disclosure lists 1923 as its year built. It is classed as multifamily housing.
Is 101 Realty 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, “101 Realty LLC, New York City, New York — 2024 benchmarking disclosure”, https://buildingcensus.com/buildings/new-york-city/101-realty-llc-c9c2bc9f (data as of October 2, 2026).