878 Brook Ave
Office in New York City, NY · 10451
At a glance
878 Brook Ave is a 86,228-square-foot office building in New York City, New York, built in 1904. In its 2024 New York City benchmarking disclosure it reported a site energy-use intensity of 3.3 kBtu/ft² and 33 tCO₂e of greenhouse-gas emissions.
Local Law 84 (LL84) · reporting year 2024
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | — |
| Site EUI | 3.3 kBtu/ft² |
| Source EUI | 9.3 kBtu/ft² |
| GHG emissions | 33 tCO₂e |
| GHG intensity | 0.4 kgCO₂e/ft² |
| Electricity | 84,135 kWh |
| Gross floor area | 86,228 sq ft |
| Source record | nyc:33532285:2024 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2024latest | — | 3.3 kBtu/ft² | 33 tCO₂e | |
| 2023 | — | 1.8 kBtu/ft² | 17 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
- 878 Brook Ave
- City
- New York City
- State
- New York
- ZIP
- 10451
- Coordinates
- 40.82290, -73.91044
Within ~1 km
Nearby benchmarked buildings
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- ADAMS - Bldgs 1-4score —
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- ADAMSscore 6
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- ELH - 556 Bergenscore 99
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Multifamily Housing · 684,900 sq ft
See also: most efficient in New York City · biggest emitters
How does 878 Brook Ave 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. Its site EUI of 3.3 kBtu/ft² is about 95% below the average of 64.5 kBtu/ft² — it uses less energy per square foot than the typical building in that group. Its emissions intensity of 0.4 kgCO₂e/ft² is about 93% below the group average of 5.8 kgCO₂e/ft².
At 86,228 sq ft, it is about 58% below the average floor area of 205,440 sq ft for those buildings. It was built in 1904, 36 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 878 Brook Ave's energy performance changed over time?
BuildingCensus holds 2 New York City disclosures for 878 Brook Ave, covering report years 2023–2024. Site EUI moved from 1.8 kBtu/ft² (2023) to 3.3 kBtu/ft² (2024), an 83% increase. Reported emissions went from 17 tCO₂e to 33 tCO₂e over the same span (up 100%).
What does a site EUI of 3.3 kBtu/ft² mean?
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. 878 Brook Ave's 3.3 kBtu/ft² across 86,228 sq ft works out to about 0.3 billion Btu (83 MWh-equivalent) in 2024. Its source EUI of 9.3 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 84,135 kWh of electricity for the year.
Which law requires 878 Brook Ave to report its energy use?
878 Brook 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:33532285:2024). 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
- 477-483 10th Avenue AKA 500 West 37th Street· 86,212 sq ft · score 60 (C)
- Chestnut - 49 West 27th Street· 86,050 sq ft · score 68 (C)
- Copy of Feil - 140 West 57th Street· 86,025 sq ft
- ABS- 314 Scholes Street (151 BOGART STREET)· 85,978 sq ft
- Samson - 129 West 29th St· 85,900 sq ft · score 89 (A)
- DOF_3430_Queens Business Center· 85,678 sq ft · score 96 (A)
- 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 878 Brook Ave's energy grade?
878 Brook Ave did not report an ENERGY STAR score in its 2024 disclosure, but its site energy-use intensity was 3.3 kBtu/ft².
How much energy does 878 Brook Ave use?
Its 2024 site energy-use intensity was 3.3 kBtu/ft² (9.3 kBtu/ft² source) across 86,228 sq ft, including 84,135 kWh of electricity.
What are 878 Brook Ave's carbon emissions?
878 Brook Ave reported 33 tCO₂e of greenhouse-gas emissions (0.4 kgCO₂e/ft²) for 2024.
Where is 878 Brook Ave?
878 Brook Ave is in New York City, New York 10451. Its coordinates are 40.82290, -73.91044 (latitude, longitude), as published in the Energy and Water Data Disclosure file.
How big is 878 Brook Ave and when was it built?
878 Brook Ave has 86,228 sq ft of gross floor area, as reported in its 2024 disclosure. The disclosure lists 1904 as its year built. It is classed as office.
Is 878 Brook 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, “878 Brook Ave, New York City, New York — 2024 benchmarking disclosure”, https://buildingcensus.com/buildings/new-york-city/878-brook-ave-b438aa0e (data as of October 2, 2026).