Armco: 88-30 51st Ave
Multifamily Housing in New York City, NY · 88-30 51st Ave · 11373
At a glance
Armco: 88-30 51st Ave is a 82,503-square-foot multifamily housing building in New York City, New York, built in 1959. 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 58.8 kBtu/ft² and 307 tCO₂e of greenhouse-gas emissions. That score is higher than 78% 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 | 91 (band A) |
| Site EUI | 58.8 kBtu/ft² |
| Source EUI | 78.6 kBtu/ft² |
| GHG emissions | 307 tCO₂e |
| GHG intensity | 3.7 kgCO₂e/ft² |
| Electricity | 233,076 kWh |
| Natural gas | 40,548 therms |
| Water use | 3,742 kgal |
| Gross floor area | 82,503 sq ft |
| Source record | nyc:6629446:2024 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2024latest | 91 | ±0 | 58.8 kBtu/ft² | 307 tCO₂e |
| 2023 | 91 | -4 | 57.4 kBtu/ft² | 295 tCO₂e |
| 2022 | 95 | 55.2 kBtu/ft² | 267 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
- 88-30 51st Ave
- City
- New York City
- State
- New York
- ZIP
- 11373
- Coordinates
- 40.73918, -73.87530
Within ~1 km
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Multifamily Housing · 381,459 sq ft
- 90-02 Queens Blvd - Queensscore 100
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See also: most efficient in New York City · biggest emitters
How does Armco: 88-30 51st Ave 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. Armco: 88-30 51st Ave's ENERGY STAR score of 91 compares with an average of 63 across the 22,829 that report a score; it scores higher than 78% of them and lower than 21%. Its site EUI of 58.8 kBtu/ft² is about 21% 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 3.7 kgCO₂e/ft² is about 28% below the group average of 5.2 kgCO₂e/ft².
At 82,503 sq ft, it is about 18% below the average floor area of 100,951 sq ft for those buildings. It was built in 1959, 7 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 Armco: 88-30 51st Ave's energy performance changed over time?
BuildingCensus holds 3 New York City disclosures for Armco: 88-30 51st Ave, covering report years 2022–2024. Its ENERGY STAR score went from 95 in 2022 to 91 in 2024 (-4 points); its best year on file was 2022, at 95. Site EUI moved from 55.2 kBtu/ft² (2022) to 58.8 kBtu/ft² (2024), an 7% increase. Reported emissions went from 267 tCO₂e to 307 tCO₂e over the same span (up 15%).
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. Armco: 88-30 51st Ave's 58.8 kBtu/ft² across 82,503 sq ft works out to about 4.9 billion Btu (1,422 MWh-equivalent) in 2024. Its source EUI of 78.6 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 233,076 kWh of electricity, 40,548 therms of natural gas and 3,742 thousand gallons of water for the year.
Which law requires Armco: 88-30 51st Ave to report its energy use?
Armco: 88-30 51st Ave 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:6629446:2024). 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
- 3701 Henry Hudson Pkwy· 82,500 sq ft · score 45 (D)
- 1237 Myrtle· 82,500 sq ft · score 95 (A)
- 609 Kappock Street· 82,500 sq ft · score 72 (B)
- 5 MINERVA PL.· 82,500 sq ft · score 69 (C)
- Congressional Owners, Inc.· 82,500 sq ft · score 91 (A)
- Rios Senior Residence· 82,500 sq ft · score 83 (B)
- 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 Armco: 88-30 51st Ave's energy grade?
Armco: 88-30 51st Ave 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 Armco: 88-30 51st Ave use?
Its 2024 site energy-use intensity was 58.8 kBtu/ft² (78.6 kBtu/ft² source) across 82,503 sq ft, including 233,076 kWh of electricity and 40,548 therms of natural gas.
What are Armco: 88-30 51st Ave's carbon emissions?
Armco: 88-30 51st Ave reported 307 tCO₂e of greenhouse-gas emissions (3.7 kgCO₂e/ft²) for 2024.
Where is Armco: 88-30 51st Ave?
Armco: 88-30 51st Ave is in New York City, New York 11373. Its coordinates are 40.73918, -73.87530 (latitude, longitude), as published in the Energy and Water Data Disclosure file.
How big is Armco: 88-30 51st Ave and when was it built?
Armco: 88-30 51st Ave has 82,503 sq ft of gross floor area, as reported in its 2024 disclosure. The disclosure lists 1959 as its year built. It is classed as multifamily housing.
Is Armco: 88-30 51st Ave 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, “Armco: 88-30 51st Ave, New York City, New York — 2024 benchmarking disclosure”, https://buildingcensus.com/buildings/new-york-city/armco-88-30-51st-ave-24288631 (data as of October 2, 2026).