809 First Avenue
Office in New York City, NY · 809 1 AVENUE · 10017
At a glance
809 First Avenue is a 126,086-square-foot office building at 809 1 AVENUE in New York City, New York, built in 1965. In its 2024 New York City benchmarking disclosure it reported an ENERGY STAR score of 70 out of 100 (grade B), a site energy-use intensity of 60.8 kBtu/ft² and 778 tCO₂e of greenhouse-gas emissions. That score is higher than 35% of the 2,519 scored office buildings in New York City.
Local Law 84 (LL84) · reporting year 2024
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | 70 (band B) |
| Site EUI | 60.8 kBtu/ft² |
| Source EUI | 143.0 kBtu/ft² |
| GHG emissions | 778 tCO₂e |
| GHG intensity | 6.2 kgCO₂e/ft² |
| Electricity | 1,617,940 kWh |
| Water use | 1,030 kgal |
| Gross floor area | 126,086 sq ft |
| Source record | nyc:4371555:2024 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2024latest | 70 | +5 | 60.8 kBtu/ft² | 778 tCO₂e |
| 2023 | 65 | +14 | 76.3 kBtu/ft² | 747 tCO₂e |
| 2022 | 51 | 77.0 kBtu/ft² | 611 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
- 809 1 AVENUE
- City
- New York City
- State
- New York
- ZIP
- 10017
- Coordinates
- 40.75103, -73.96824
Within ~1 km
Nearby benchmarked buildings
- 277 Park Avenuescore 64
Office · 1,897,643 sq ft
- 345 Park Ave LPscore 47
Office · 1,783,232 sq ft
- 277 Park Avenuescore 55
Office · 1,745,856 sq ft
Office · 1,682,110 sq ft
- Waldorf Astoria Hotelscore 97
Hotel · 1,666,763 sq ft
Office · 1,589,903 sq ft
See also: most efficient in New York City · biggest emitters
How does 809 First 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. 809 First Avenue's ENERGY STAR score of 70 compares with an average of 72 across the 2,519 that report a score; it scores higher than 35% of them and lower than 64%. Its site EUI of 60.8 kBtu/ft² is roughly in line with 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 6.2 kgCO₂e/ft² is roughly in line with the group average of 5.8 kgCO₂e/ft².
At 126,086 sq ft, it is about 39% below the average floor area of 205,440 sq ft for those buildings. It was built in 1965, 25 years later 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 809 First Avenue's energy performance changed over time?
BuildingCensus holds 3 New York City disclosures for 809 First Avenue, covering report years 2022–2024. Its ENERGY STAR score went from 51 in 2022 to 70 in 2024 (+19 points). Site EUI moved from 77.0 kBtu/ft² (2022) to 60.8 kBtu/ft² (2024), a 21% decrease. Reported emissions went from 611 tCO₂e to 778 tCO₂e over the same span (up 27%).
What does an ENERGY STAR score of 70 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 70 means the building performs better than about 70% of its national peers. BuildingCensus bands the score into report-card grades; 70 falls in band B — above median (70–84). It sits 5 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. 809 First Avenue's 60.8 kBtu/ft² across 126,086 sq ft works out to about 7.7 billion Btu (2,247 MWh-equivalent) in 2024. Its source EUI of 143.0 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 1,617,940 kWh of electricity and 1,030 thousand gallons of water for the year.
Which law requires 809 First Avenue to report its energy use?
809 First 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 2024 disclosure (source record nyc:4371555:2024). 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
- Mayflower Agency Co., Inc.· 126,052 sq ft · score 91 (A)
- 495 FLATBUSH AVE. L.L.C.· 126,042 sq ft · EUI 53.2 kBtu/ft²
- 3651 Bruckner Blvd· 126,000 sq ft · score 100 (A)
- National Energy Cost Services Inc:511 5 AVENUE· 125,632 sq ft · score 88 (A)
- 511 Fifth Avenue LLC· 125,632 sq ft · score 97 (A)
- 511 Fifth Avenue· 125,632 sq ft · EUI 27.1 kBtu/ft²
- 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 809 First Avenue's energy grade?
809 First Avenue scores 70 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 809 First Avenue use?
Its 2024 site energy-use intensity was 60.8 kBtu/ft² (143.0 kBtu/ft² source) across 126,086 sq ft, including 1,617,940 kWh of electricity.
What are 809 First Avenue's carbon emissions?
809 First Avenue reported 778 tCO₂e of greenhouse-gas emissions (6.2 kgCO₂e/ft²) for 2024.
Where is 809 First Avenue?
809 First Avenue is at 809 1 AVENUE, in New York City, New York 10017. Its coordinates are 40.75103, -73.96824 (latitude, longitude), as published in the Energy and Water Data Disclosure file.
How big is 809 First Avenue and when was it built?
809 First Avenue has 126,086 sq ft of gross floor area, as reported in its 2024 disclosure. The disclosure lists 1965 as its year built. It is classed as office.
Is 809 First Avenue 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, “809 First Avenue, New York City, New York — 2024 benchmarking disclosure”, https://buildingcensus.com/buildings/new-york-city/809-first-avenue-ef44436e (data as of October 2, 2026).