IAHMCO ENTERPRISE INC
Multifamily Housing in New York City, NY · 4123 9 Ave · 11232
At a glance
IAHMCO ENTERPRISE INC is a 29,960-square-foot multifamily housing building at 4123 9 Ave in New York City, New York, built in 1916. In its 2023 New York City benchmarking disclosure it reported an ENERGY STAR score of 25 out of 100 (grade D), a site energy-use intensity of 106.1 kBtu/ft² and 192 tCO₂e of greenhouse-gas emissions. That score is higher than 15% of the 22,829 scored multifamily housing buildings in New York City.
Local Law 84 (LL84) · reporting year 2023
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | 25 (band D) |
| Site EUI | 106.1 kBtu/ft² |
| Source EUI | 136.1 kBtu/ft² |
| GHG emissions | 192 tCO₂e |
| GHG intensity | 6.4 kgCO₂e/ft² |
| Electricity | 123,669 kWh |
| Natural gas | 27,580 therms |
| Water use | 6,973 kgal |
| Gross floor area | 29,960 sq ft |
| Source record | nyc:12743567:2023 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2023latest | 25 | +1 | 106.1 kBtu/ft² | 192 tCO₂e |
| 2022 | 24 | 118.7 kBtu/ft² | 203 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
- 4123 9 Ave
- City
- New York City
- State
- New York
- ZIP
- 11232
- Coordinates
- 40.64465, -73.99644
Within ~1 km
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See also: most efficient in New York City · biggest emitters
How does IAHMCO ENTERPRISE INC 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. IAHMCO ENTERPRISE INC's ENERGY STAR score of 25 compares with an average of 63 across the 22,829 that report a score; it scores higher than 15% of them and lower than 85%. Its site EUI of 106.1 kBtu/ft² is about 42% 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 6.4 kgCO₂e/ft² is about 23% above the group average of 5.2 kgCO₂e/ft².
At 29,960 sq ft, it is about 70% below the average floor area of 100,951 sq ft for those buildings. It was built in 1916, 36 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 IAHMCO ENTERPRISE INC's energy performance changed over time?
BuildingCensus holds 2 New York City disclosures for IAHMCO ENTERPRISE INC, covering report years 2022–2023. Its ENERGY STAR score went from 24 in 2022 to 25 in 2023 (+1 points). Site EUI moved from 118.7 kBtu/ft² (2022) to 106.1 kBtu/ft² (2023), a 11% decrease. Reported emissions went from 203 tCO₂e to 192 tCO₂e over the same span (down 5%).
What does an ENERGY STAR score of 25 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 25 means the building performs better than about 25% of its national peers. BuildingCensus bands the score into report-card grades; 25 falls in band D — lowest band (1–54). It sits 50 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. IAHMCO ENTERPRISE INC's 106.1 kBtu/ft² across 29,960 sq ft works out to about 3.2 billion Btu (932 MWh-equivalent) in 2023. Its source EUI of 136.1 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 123,669 kWh of electricity, 27,580 therms of natural gas and 6,973 thousand gallons of water for the year.
Which law requires IAHMCO ENTERPRISE INC to report its energy use?
IAHMCO ENTERPRISE INC 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 2023 disclosure (source record nyc:12743567:2023). 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
- Hamilton House· 29,952 sq ft · score 40 (D)
- 525 East 81st Street· 29,952 sq ft · score 43 (D)
- Coltown - 54 Wadsworth Terrace· 29,950 sq ft · score 84 (B)
- Progressive - 28 Sands Street· 29,949 sq ft
- Progressive - 533 Bay Street· 29,949 sq ft · score 2 (D)
- 154 Lenox Road· 29,948 sq ft · score 100 (A)
- 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 IAHMCO ENTERPRISE INC's energy grade?
IAHMCO ENTERPRISE INC scores 25 out of 100 on ENERGY STAR — band D, lowest band (1–54) — in its 2023 New York City disclosure. Scores are national percentiles against similar buildings; 75+ qualifies for ENERGY STAR certification.
How much energy does IAHMCO ENTERPRISE INC use?
Its 2023 site energy-use intensity was 106.1 kBtu/ft² (136.1 kBtu/ft² source) across 29,960 sq ft, including 123,669 kWh of electricity and 27,580 therms of natural gas.
What are IAHMCO ENTERPRISE INC's carbon emissions?
IAHMCO ENTERPRISE INC reported 192 tCO₂e of greenhouse-gas emissions (6.4 kgCO₂e/ft²) for 2023.
Where is IAHMCO ENTERPRISE INC?
IAHMCO ENTERPRISE INC is at 4123 9 Ave, in New York City, New York 11232. Its coordinates are 40.64465, -73.99644 (latitude, longitude), as published in the Energy and Water Data Disclosure file.
How big is IAHMCO ENTERPRISE INC and when was it built?
IAHMCO ENTERPRISE INC has 29,960 sq ft of gross floor area, as reported in its 2023 disclosure. The disclosure lists 1916 as its year built. It is classed as multifamily housing.
Is IAHMCO ENTERPRISE INC covered by Local Law 84 (LL84)?
Yes — it appears in the 2023 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, “IAHMCO ENTERPRISE INC, New York City, New York — 2023 benchmarking disclosure”, https://buildingcensus.com/buildings/new-york-city/iahmco-enterprise-inc-b014f6c0 (data as of October 2, 2026).