The Octagon (oc034)
Multifamily Housing in New York City, NY · 888 Main Street · 10044
At a glance
The Octagon (oc034) is a 556,000-square-foot multifamily housing building at 888 Main Street in New York City, New York, built in 2006. In its 2024 New York City benchmarking disclosure it reported an ENERGY STAR score of 75 out of 100 (grade B), a site energy-use intensity of 38.2 kBtu/ft² and 2,061 tCO₂e of greenhouse-gas emissions. That score is higher than 57% 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 | 75 (band B) |
| Site EUI | 38.2 kBtu/ft² |
| Source EUI | 87.5 kBtu/ft² |
| GHG emissions | 2,061 tCO₂e |
| GHG intensity | 3.7 kgCO₂e/ft² |
| Electricity | 4,412,619 kWh |
| Natural gas | 61,767 therms |
| Gross floor area | 556,000 sq ft |
| Source record | nyc:4956948:2024 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2024latest | 75 | +74 | 38.2 kBtu/ft² | 2,061 tCO₂e |
| 2022 | 1 | 285.2 kBtu/ft² | 11,600 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
- 888 Main Street
- City
- New York City
- State
- New York
- ZIP
- 10044
- Coordinates
- 40.76917, -73.94336
Within ~1 km
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See also: most efficient in New York City · biggest emitters
How does The Octagon (oc034) 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. The Octagon (oc034)'s ENERGY STAR score of 75 compares with an average of 63 across the 22,829 that report a score; it scores higher than 57% of them and lower than 42%. Its site EUI of 38.2 kBtu/ft² is about half of 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 29% below the group average of 5.2 kgCO₂e/ft².
At 556,000 sq ft, it is about 451% above the average floor area of 100,951 sq ft for those buildings. It was built in 2006, 54 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 The Octagon (oc034)'s energy performance changed over time?
BuildingCensus holds 2 New York City disclosures for The Octagon (oc034), covering report years 2022, 2024. Its ENERGY STAR score went from 1 in 2022 to 75 in 2024 (+74 points). Site EUI moved from 285.2 kBtu/ft² (2022) to 38.2 kBtu/ft² (2024), a 87% decrease. Reported emissions went from 11,600 tCO₂e to 2,061 tCO₂e over the same span (down 82%).
What does an ENERGY STAR score of 75 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 75 means the building performs better than about 75% of its national peers. BuildingCensus bands the score into report-card grades; 75 falls in band B — above median (70–84). 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. The Octagon (oc034)'s 38.2 kBtu/ft² across 556,000 sq ft works out to about 21.2 billion Btu (6,225 MWh-equivalent) in 2024. Its source EUI of 87.5 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 4,412,619 kWh of electricity and 61,767 therms of natural gas for the year.
Which law requires The Octagon (oc034) to report its energy use?
The Octagon (oc034) 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:4956948:2024). 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.
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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 The Octagon (oc034)'s energy grade?
The Octagon (oc034) scores 75 out of 100 on ENERGY STAR — band B, above median (70–84) — in its 2024 New York City disclosure. Scores are national percentiles against similar buildings; 75+ qualifies for ENERGY STAR certification.
How much energy does The Octagon (oc034) use?
Its 2024 site energy-use intensity was 38.2 kBtu/ft² (87.5 kBtu/ft² source) across 556,000 sq ft, including 4,412,619 kWh of electricity and 61,767 therms of natural gas.
What are The Octagon (oc034)'s carbon emissions?
The Octagon (oc034) reported 2,061 tCO₂e of greenhouse-gas emissions (3.7 kgCO₂e/ft²) for 2024.
Where is The Octagon (oc034)?
The Octagon (oc034) is at 888 Main Street, in New York City, New York 10044. Its coordinates are 40.76917, -73.94336 (latitude, longitude), as published in the Energy and Water Data Disclosure file.
How big is The Octagon (oc034) and when was it built?
The Octagon (oc034) has 556,000 sq ft of gross floor area, as reported in its 2024 disclosure. The disclosure lists 2006 as its year built. It is classed as multifamily housing.
Is The Octagon (oc034) 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, “The Octagon (oc034), New York City, New York — 2024 benchmarking disclosure”, https://buildingcensus.com/buildings/new-york-city/the-octagon-oc034-fdf35958 (data as of October 2, 2026).