305 East 47th Street
Office in New York City, NY · 10017
At a glance
305 East 47th Street is a 154,404-square-foot office building in New York City, New York, built in 1928. In its 2024 New York City benchmarking disclosure it reported an ENERGY STAR score of 82 out of 100 (grade B), a site energy-use intensity of 65.3 kBtu/ft² and 904 tCO₂e of greenhouse-gas emissions. That score is higher than 56% 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 | 82 (band B) |
| Site EUI | 65.3 kBtu/ft² |
| Source EUI | 136.0 kBtu/ft² |
| GHG emissions | 904 tCO₂e |
| GHG intensity | 5.9 kgCO₂e/ft² |
| Electricity | 1,744,662 kWh |
| Natural gas | 41,243 therms |
| Water use | 1,979 kgal |
| Gross floor area | 154,404 sq ft |
| Source record | nyc:2694688:2024 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2024latest | 82 | +5 | 65.3 kBtu/ft² | 904 tCO₂e |
| 2023 | 77 | +2 | 65.1 kBtu/ft² | 882 tCO₂e |
| 2022 | 75 | 69.8 kBtu/ft² | 781 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
- 305 East 47th Street
- City
- New York City
- State
- New York
- ZIP
- 10017
- Coordinates
- 40.75286, -73.96955
Within ~1 km
Nearby benchmarked buildings
- Metlife Building (200 Park)score 69
Office · 2,993,388 sq ft
- 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
- 399 Park Avenuescore 69
Office · 1,671,941 sq ft
See also: most efficient in New York City · biggest emitters
How does 305 East 47th Street 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. 305 East 47th Street's ENERGY STAR score of 82 compares with an average of 72 across the 2,519 that report a score; it scores higher than 56% of them and lower than 42%. Its site EUI of 65.3 kBtu/ft² is roughly in line with the average of 64.5 kBtu/ft². Its emissions intensity of 5.9 kgCO₂e/ft² is roughly in line with the group average of 5.8 kgCO₂e/ft².
At 154,404 sq ft, it is about 25% below the average floor area of 205,440 sq ft for those buildings. It was built in 1928, 12 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 305 East 47th Street's energy performance changed over time?
BuildingCensus holds 3 New York City disclosures for 305 East 47th Street, covering report years 2022–2024. Its ENERGY STAR score went from 75 in 2022 to 82 in 2024 (+7 points). Site EUI moved from 69.8 kBtu/ft² (2022) to 65.3 kBtu/ft² (2024), a 6% decrease. Reported emissions went from 781 tCO₂e to 904 tCO₂e over the same span (up 16%).
What does an ENERGY STAR score of 82 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 82 means the building performs better than about 82% of its national peers. BuildingCensus bands the score into report-card grades; 82 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. 305 East 47th Street's 65.3 kBtu/ft² across 154,404 sq ft works out to about 10.1 billion Btu (2,955 MWh-equivalent) in 2024. Its source EUI of 136.0 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 1,744,662 kWh of electricity, 41,243 therms of natural gas and 1,979 thousand gallons of water for the year.
Which law requires 305 East 47th Street to report its energy use?
305 East 47th Street 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:2694688:2024). 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
- URA Group - 366 Fifth Avenue· 154,340 sq ft · score 89 (A)
- Related Retail Hub - 2· 154,051 sq ft · score 40 (D)
- Heron Tower· 154,000 sq ft · score 82 (B)
- Commerce-Halsey, LLC· 153,816 sq ft · score 99 (A)
- 305 East 46th Street· 153,689 sq ft · score 70 (B)
- Malt House· 153,404 sq ft
- 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 305 East 47th Street's energy grade?
305 East 47th Street scores 82 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 305 East 47th Street use?
Its 2024 site energy-use intensity was 65.3 kBtu/ft² (136.0 kBtu/ft² source) across 154,404 sq ft, including 1,744,662 kWh of electricity and 41,243 therms of natural gas.
What are 305 East 47th Street's carbon emissions?
305 East 47th Street reported 904 tCO₂e of greenhouse-gas emissions (5.9 kgCO₂e/ft²) for 2024.
Where is 305 East 47th Street?
305 East 47th Street is in New York City, New York 10017. Its coordinates are 40.75286, -73.96955 (latitude, longitude), as published in the Energy and Water Data Disclosure file.
How big is 305 East 47th Street and when was it built?
305 East 47th Street has 154,404 sq ft of gross floor area, as reported in its 2024 disclosure. The disclosure lists 1928 as its year built. It is classed as office.
Is 305 East 47th Street 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, “305 East 47th Street, New York City, New York — 2024 benchmarking disclosure”, https://buildingcensus.com/buildings/new-york-city/305-east-47th-street-19ad4b27 (data as of October 2, 2026).