166 WEST 129TH REALTY, LLC
Multifamily Housing in New York City, NY · 166 WEST 129TH STREET · 11226
At a glance
166 WEST 129TH REALTY, LLC is a 35,292-square-foot multifamily housing building at 166 WEST 129TH STREET in New York City, New York, built in 1925. In its 2024 New York City benchmarking disclosure it reported an ENERGY STAR score of 4 out of 100 (grade D), a site energy-use intensity of 137.3 kBtu/ft² and 331 tCO₂e of greenhouse-gas emissions. That score is higher than 4% 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 | 4 (band D) |
| Site EUI | 137.3 kBtu/ft² |
| Source EUI | 203.0 kBtu/ft² |
| GHG emissions | 331 tCO₂e |
| GHG intensity | 9.4 kgCO₂e/ft² |
| Electricity | 347,788 kWh |
| Natural gas | 36,576 therms |
| Water use | 2,771 kgal |
| Gross floor area | 35,292 sq ft |
| Source record | nyc:6197896:2024 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2024latest | 4 | -6 | 137.3 kBtu/ft² | 331 tCO₂e |
| 2023 | 10 | 116.6 kBtu/ft² | 284 tCO₂e | |
| 2022 | — | 158.1 kBtu/ft² | 334 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
- 166 WEST 129TH STREET
- City
- New York City
- State
- New York
- ZIP
- 11226
Within ~1 km
Nearby benchmarked buildings
This source publishes no coordinates, so nearby buildings can't be resolved yet.
See also: most efficient in New York City · biggest emitters
How does 166 WEST 129TH 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. 166 WEST 129TH REALTY, LLC's ENERGY STAR score of 4 compares with an average of 63 across the 22,829 that report a score; it scores higher than 4% of them and lower than 96%. Its site EUI of 137.3 kBtu/ft² is about 83% 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 9.4 kgCO₂e/ft² is about 80% above the group average of 5.2 kgCO₂e/ft².
At 35,292 sq ft, it is about 65% below the average floor area of 100,951 sq ft for those buildings. It was built in 1925, 27 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 166 WEST 129TH REALTY, LLC's energy performance changed over time?
BuildingCensus holds 3 New York City disclosures for 166 WEST 129TH REALTY, LLC, covering report years 2022–2024. Its ENERGY STAR score went from 10 in 2023 to 4 in 2024 (-6 points); its best year on file was 2023, at 10. Site EUI moved from 158.1 kBtu/ft² (2022) to 137.3 kBtu/ft² (2024), a 13% decrease. Reported emissions went from 334 tCO₂e to 331 tCO₂e over the same span (down 1%).
What does an ENERGY STAR score of 4 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 4 means the building performs better than about 4% of its national peers. BuildingCensus bands the score into report-card grades; 4 falls in band D — lowest band (1–54). It sits 71 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. 166 WEST 129TH REALTY, LLC's 137.3 kBtu/ft² across 35,292 sq ft works out to about 4.8 billion Btu (1,420 MWh-equivalent) in 2024. Its source EUI of 203.0 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 347,788 kWh of electricity, 36,576 therms of natural gas and 2,771 thousand gallons of water for the year.
Which law requires 166 WEST 129TH REALTY, LLC to report its energy use?
166 WEST 129TH 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:6197896:2024). 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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- Multifamily Housing buildings in New York City· 33,022 benchmarked
- All New York City benchmarked buildings· Local Law 84 (LL84)
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Frequently asked questions
What is 166 WEST 129TH REALTY, LLC's energy grade?
166 WEST 129TH REALTY, LLC scores 4 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 166 WEST 129TH REALTY, LLC use?
Its 2024 site energy-use intensity was 137.3 kBtu/ft² (203.0 kBtu/ft² source) across 35,292 sq ft, including 347,788 kWh of electricity and 36,576 therms of natural gas.
What are 166 WEST 129TH REALTY, LLC's carbon emissions?
166 WEST 129TH REALTY, LLC reported 331 tCO₂e of greenhouse-gas emissions (9.4 kgCO₂e/ft²) for 2024.
Where is 166 WEST 129TH REALTY, LLC?
166 WEST 129TH REALTY, LLC is at 166 WEST 129TH STREET, in New York City, New York 11226.
How big is 166 WEST 129TH REALTY, LLC and when was it built?
166 WEST 129TH REALTY, LLC has 35,292 sq ft of gross floor area, as reported in its 2024 disclosure. The disclosure lists 1925 as its year built. It is classed as multifamily housing.
Is 166 WEST 129TH 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, “166 WEST 129TH REALTY, LLC, New York City, New York — 2024 benchmarking disclosure”, https://buildingcensus.com/buildings/new-york-city/166-west-129th-realty-llc-947f4cbe (data as of October 2, 2026).