APF - 28 West 44th Street
Office in New York City, NY · 23 WEST 43 STREET · 10036
At a glance
APF - 28 West 44th Street is a 313,039-square-foot office building at 23 WEST 43 STREET in New York City, New York, built in 1919. In its 2024 New York City benchmarking disclosure it reported an ENERGY STAR score of 91 out of 100 (grade A), a site energy-use intensity of 73.0 kBtu/ft² and 1,952 tCO₂e of greenhouse-gas emissions. That score is higher than 77% of the 2,519 scored office buildings in New York City.
Local Law 84 (LL84) · reporting year 2024
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | 91 (band A) |
| Site EUI | 73.0 kBtu/ft² |
| Source EUI | 134.2 kBtu/ft² |
| GHG emissions | 1,952 tCO₂e |
| GHG intensity | 6.2 kgCO₂e/ft² |
| Electricity | 2,688,445 kWh |
| Natural gas | 9,290 therms |
| Water use | 2,411 kgal |
| Gross floor area | 313,039 sq ft |
| Source record | nyc:3552302:2024 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2024latest | 91 | +2 | 73.0 kBtu/ft² | 1,952 tCO₂e |
| 2023 | 89 | +16 | 73.7 kBtu/ft² | 1,925 tCO₂e |
| 2022 | 73 | 75.1 kBtu/ft² | 1,738 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
- 23 WEST 43 STREET
- City
- New York City
- State
- New York
- ZIP
- 10036
- Coordinates
- 40.75458, -73.98138
Within ~1 km
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See also: most efficient in New York City · biggest emitters
How does APF - 28 West 44th Street compare with other office buildings in New York City?
The latest disclosures cover 3,384 office buildings in New York City, out of 48,310 buildings citywide. APF - 28 West 44th Street's ENERGY STAR score of 91 compares with an average of 72 across the 2,519 that report a score; it scores higher than 77% of them and lower than 21%. Its site EUI of 73.0 kBtu/ft² is about 13% above the average of 64.5 kBtu/ft² — it uses more energy per square foot than the typical building in that group. Its emissions intensity of 6.2 kgCO₂e/ft² is roughly in line with the group average of 5.8 kgCO₂e/ft².
At 313,039 sq ft, it is about 52% above the average floor area of 205,440 sq ft for those buildings. It was built in 1919, 21 years earlier than the group's average year built (1940). Across all 24 jurisdictions BuildingCensus covers, the 15,264 office buildings average an ENERGY STAR score of 73 and a site EUI of 59.3 kBtu/ft².
How has APF - 28 West 44th Street's energy performance changed over time?
BuildingCensus holds 3 New York City disclosures for APF - 28 West 44th Street, covering report years 2022–2024. Its ENERGY STAR score went from 73 in 2022 to 91 in 2024 (+18 points). Site EUI moved from 75.1 kBtu/ft² (2022) to 73.0 kBtu/ft² (2024), a 3% decrease. Reported emissions went from 1,738 tCO₂e to 1,952 tCO₂e over the same span (up 12%).
What does an ENERGY STAR score of 91 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 91 means the building performs better than about 91% of its national peers. BuildingCensus bands the score into report-card grades; 91 falls in band A — high performer (85–100). Scores of 75 or higher meet the threshold for ENERGY STAR certification; certification itself is a separate, verified application that the disclosure does not record. 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. APF - 28 West 44th Street's 73.0 kBtu/ft² across 313,039 sq ft works out to about 22.9 billion Btu (6,697 MWh-equivalent) in 2024. Its source EUI of 134.2 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 2,688,445 kWh of electricity, 9,290 therms of natural gas and 2,411 thousand gallons of water for the year.
Which law requires APF - 28 West 44th Street to report its energy use?
APF - 28 West 44th 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:3552302:2024). 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 office buildings in New York City
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- 124110 1370 Avenue of the Americas· 311,501 sq ft · score 53 (D)
- 16 Court Street· 310,620 sq ft · EUI 58.0 kBtu/ft²
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- Office buildings in New York City· 3,384 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 APF - 28 West 44th Street's energy grade?
APF - 28 West 44th Street scores 91 out of 100 on ENERGY STAR — band A, high performer (85–100) — in its 2024 New York City disclosure. Scores are national percentiles against similar buildings; 75+ qualifies for ENERGY STAR certification.
How much energy does APF - 28 West 44th Street use?
Its 2024 site energy-use intensity was 73.0 kBtu/ft² (134.2 kBtu/ft² source) across 313,039 sq ft, including 2,688,445 kWh of electricity and 9,290 therms of natural gas.
What are APF - 28 West 44th Street's carbon emissions?
APF - 28 West 44th Street reported 1,952 tCO₂e of greenhouse-gas emissions (6.2 kgCO₂e/ft²) for 2024.
Where is APF - 28 West 44th Street?
APF - 28 West 44th Street is at 23 WEST 43 STREET, in New York City, New York 10036. Its coordinates are 40.75458, -73.98138 (latitude, longitude), as published in the Energy and Water Data Disclosure file.
How big is APF - 28 West 44th Street and when was it built?
APF - 28 West 44th Street has 313,039 sq ft of gross floor area, as reported in its 2024 disclosure. The disclosure lists 1919 as its year built. It is classed as office.
Is APF - 28 West 44th 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, “APF - 28 West 44th Street, New York City, New York — 2024 benchmarking disclosure”, https://buildingcensus.com/buildings/new-york-city/apf-28-west-44th-street-4d5f48b2 (data as of October 2, 2026).