117 West 123rd Street
Multifamily Housing in New York City, NY · 10027
At a glance
117 West 123rd Street is a 44,114-square-foot multifamily housing building in New York City, New York, built in 2008. In its 2024 New York City benchmarking disclosure it reported an ENERGY STAR score of 63 out of 100 (grade C), a site energy-use intensity of 60.0 kBtu/ft² and 199 tCO₂e of greenhouse-gas emissions. That score is higher than 43% 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 | 63 (band C) |
| Site EUI | 60.0 kBtu/ft² |
| Source EUI | 100.3 kBtu/ft² |
| GHG emissions | 199 tCO₂e |
| GHG intensity | 4.5 kgCO₂e/ft² |
| Electricity | 275,950 kWh |
| Natural gas | 17,032 therms |
| Gross floor area | 44,114 sq ft |
| Source record | nyc:6293903:2024 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2024latest | 63 | -2 | 60.0 kBtu/ft² | 199 tCO₂e |
| 2023 | 65 | -11 | 57.9 kBtu/ft² | 187 tCO₂e |
| 2022 | 76 | 56.5 kBtu/ft² | 161 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
- 117 West 123rd Street
- City
- New York City
- State
- New York
- ZIP
- 10027
- Coordinates
- 40.80681, -73.94721
Within ~1 km
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See also: most efficient in New York City · biggest emitters
How does 117 West 123rd Street 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. 117 West 123rd Street's ENERGY STAR score of 63 compares with an average of 63 across the 22,829 that report a score; it scores higher than 43% of them and lower than 56%. Its site EUI of 60.0 kBtu/ft² is about 20% below the average of 74.9 kBtu/ft² — it uses less energy per square foot than the typical building in that group. Its emissions intensity of 4.5 kgCO₂e/ft² is about 13% below the group average of 5.2 kgCO₂e/ft².
At 44,114 sq ft, it is about 56% below the average floor area of 100,951 sq ft for those buildings. It was built in 2008, 56 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 117 West 123rd Street's energy performance changed over time?
BuildingCensus holds 3 New York City disclosures for 117 West 123rd Street, covering report years 2022–2024. Its ENERGY STAR score went from 76 in 2022 to 63 in 2024 (-13 points); its best year on file was 2022, at 76. Site EUI moved from 56.5 kBtu/ft² (2022) to 60.0 kBtu/ft² (2024), an 6% increase. Reported emissions went from 161 tCO₂e to 199 tCO₂e over the same span (up 23%).
What does an ENERGY STAR score of 63 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 63 means the building performs better than about 63% of its national peers. BuildingCensus bands the score into report-card grades; 63 falls in band C — below median (55–69). It sits 12 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. 117 West 123rd Street's 60.0 kBtu/ft² across 44,114 sq ft works out to about 2.6 billion Btu (776 MWh-equivalent) in 2024. Its source EUI of 100.3 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 275,950 kWh of electricity and 17,032 therms of natural gas for the year.
Which law requires 117 West 123rd Street to report its energy use?
117 West 123rd Street 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:6293903:2024). 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
- 1820 Morris Ave.· 44,111 sq ft · score 42 (D)
- 4161 BROADWAY· 44,104 sq ft · score 2 (D)
- 639 REALTY LLC· 44,100 sq ft · score 68 (C)
- Wai Realty Corp - 41-40 Parsons Blvd· 44,100 sq ft
- 1371 E 18th St, Brooklyn, NY, 11230· 44,100 sq ft · score 59 (C)
- Company of Rajacic - 1375 east 18th st· 44,100 sq ft · score 3 (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 117 West 123rd Street's energy grade?
117 West 123rd Street scores 63 out of 100 on ENERGY STAR — band C, below median (55–69) — in its 2024 New York City disclosure. Scores are national percentiles against similar buildings; 75+ qualifies for ENERGY STAR certification.
How much energy does 117 West 123rd Street use?
Its 2024 site energy-use intensity was 60.0 kBtu/ft² (100.3 kBtu/ft² source) across 44,114 sq ft, including 275,950 kWh of electricity and 17,032 therms of natural gas.
What are 117 West 123rd Street's carbon emissions?
117 West 123rd Street reported 199 tCO₂e of greenhouse-gas emissions (4.5 kgCO₂e/ft²) for 2024.
Where is 117 West 123rd Street?
117 West 123rd Street is in New York City, New York 10027. Its coordinates are 40.80681, -73.94721 (latitude, longitude), as published in the Energy and Water Data Disclosure file.
How big is 117 West 123rd Street and when was it built?
117 West 123rd Street has 44,114 sq ft of gross floor area, as reported in its 2024 disclosure. The disclosure lists 2008 as its year built. It is classed as multifamily housing.
Is 117 West 123rd Street 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, “117 West 123rd Street, New York City, New York — 2024 benchmarking disclosure”, https://buildingcensus.com/buildings/new-york-city/117-west-123rd-street-33761da3 (data as of October 2, 2026).