1027 FLATBUSH AVENUE
Office in New York City, NY · 11226
At a glance
1027 FLATBUSH AVENUE is a 101,970-square-foot office building in New York City, New York, built in 1929. In its 2023 New York City benchmarking disclosure it reported an ENERGY STAR score of 33 out of 100 (grade D), a site energy-use intensity of 116.9 kBtu/ft² and 1,004 tCO₂e of greenhouse-gas emissions. That score is higher than 9% of the 2,519 scored office buildings in New York City.
Local Law 84 (LL84) · reporting year 2023
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | 33 (band D) |
| Site EUI | 116.9 kBtu/ft² |
| Source EUI | 237.2 kBtu/ft² |
| GHG emissions | 1,004 tCO₂e |
| GHG intensity | 9.8 kgCO₂e/ft² |
| Electricity | 1,953,653 kWh |
| Natural gas | 52,582 therms |
| Water use | 796 kgal |
| Gross floor area | 101,970 sq ft |
| Source record | nyc:26583052:2023 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2023latest | 33 | +6 | 116.9 kBtu/ft² | 1,004 tCO₂e |
| 2022 | 27 | 131.0 kBtu/ft² | 933 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
- 1027 FLATBUSH AVENUE
- City
- New York City
- State
- New York
- ZIP
- 11226
- Coordinates
- 40.64601, -73.95807
Within ~1 km
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See also: most efficient in New York City · biggest emitters
How does 1027 FLATBUSH AVENUE 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. 1027 FLATBUSH AVENUE's ENERGY STAR score of 33 compares with an average of 72 across the 2,519 that report a score; it scores higher than 9% of them and lower than 91%. Its site EUI of 116.9 kBtu/ft² is about 81% 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 9.8 kgCO₂e/ft² is about 69% above the group average of 5.8 kgCO₂e/ft².
At 101,970 sq ft, it is about half of the average floor area of 205,440 sq ft for those buildings. It was built in 1929, 11 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 1027 FLATBUSH AVENUE's energy performance changed over time?
BuildingCensus holds 2 New York City disclosures for 1027 FLATBUSH AVENUE, covering report years 2022–2023. Its ENERGY STAR score went from 27 in 2022 to 33 in 2023 (+6 points). Site EUI moved from 131.0 kBtu/ft² (2022) to 116.9 kBtu/ft² (2023), a 11% decrease. Reported emissions went from 933 tCO₂e to 1,004 tCO₂e over the same span (up 8%).
What does an ENERGY STAR score of 33 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 33 means the building performs better than about 33% of its national peers. BuildingCensus bands the score into report-card grades; 33 falls in band D — lowest band (1–54). It sits 42 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. 1027 FLATBUSH AVENUE's 116.9 kBtu/ft² across 101,970 sq ft works out to about 11.9 billion Btu (3,493 MWh-equivalent) in 2023. Its source EUI of 237.2 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 1,953,653 kWh of electricity, 52,582 therms of natural gas and 796 thousand gallons of water for the year.
Which law requires 1027 FLATBUSH AVENUE to report its energy use?
1027 FLATBUSH AVENUE 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:26583052:2023). 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.
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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 1027 FLATBUSH AVENUE's energy grade?
1027 FLATBUSH AVENUE scores 33 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 1027 FLATBUSH AVENUE use?
Its 2023 site energy-use intensity was 116.9 kBtu/ft² (237.2 kBtu/ft² source) across 101,970 sq ft, including 1,953,653 kWh of electricity and 52,582 therms of natural gas.
What are 1027 FLATBUSH AVENUE's carbon emissions?
1027 FLATBUSH AVENUE reported 1,004 tCO₂e of greenhouse-gas emissions (9.8 kgCO₂e/ft²) for 2023.
Where is 1027 FLATBUSH AVENUE?
1027 FLATBUSH AVENUE is in New York City, New York 11226. Its coordinates are 40.64601, -73.95807 (latitude, longitude), as published in the Energy and Water Data Disclosure file.
How big is 1027 FLATBUSH AVENUE and when was it built?
1027 FLATBUSH AVENUE has 101,970 sq ft of gross floor area, as reported in its 2023 disclosure. The disclosure lists 1929 as its year built. It is classed as office.
Is 1027 FLATBUSH AVENUE 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, “1027 FLATBUSH AVENUE, New York City, New York — 2023 benchmarking disclosure”, https://buildingcensus.com/buildings/new-york-city/1027-flatbush-avenue-def991bf (data as of October 2, 2026).