100 Fifth Avenue
Office in New York City, NY · 10011
At a glance
100 Fifth Avenue is a 250,671-square-foot office building in New York City, New York, built in 1906. In its 2023 New York City benchmarking disclosure it reported an ENERGY STAR score of 79 out of 100 (grade B), a site energy-use intensity of 49.4 kBtu/ft² and 1,012 tCO₂e of greenhouse-gas emissions. That score is higher than 50% 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 | 79 (band B) |
| Site EUI | 49.4 kBtu/ft² |
| Source EUI | 96.3 kBtu/ft² |
| GHG emissions | 1,012 tCO₂e |
| GHG intensity | 4.0 kgCO₂e/ft² |
| Electricity | 1,865,934 kWh |
| Natural gas | 60,110 therms |
| Gross floor area | 250,671 sq ft |
| Source record | nyc:32791355:2023 |
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
- 100 Fifth Avenue
- City
- New York City
- State
- New York
- ZIP
- 10011
- Coordinates
- 40.73688, -73.99299
Within ~1 km
Nearby benchmarked buildings
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College/University · 5,000,000 sq ft
- 11 Madison Avenuescore 77
Office · 2,228,574 sq ft
- 51 Madisonscore 79
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- One Madison Avenuescore —
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- ConEd Irving Placescore 55
Office · 1,255,204 sq ft
See also: most efficient in New York City · biggest emitters
How does 100 Fifth 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. 100 Fifth Avenue's ENERGY STAR score of 79 compares with an average of 72 across the 2,519 that report a score; it scores higher than 50% of them and lower than 48%. Its site EUI of 49.4 kBtu/ft² is about 23% 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 4.0 kgCO₂e/ft² is about 31% below the group average of 5.8 kgCO₂e/ft².
At 250,671 sq ft, it is about 22% above the average floor area of 205,440 sq ft for those buildings. It was built in 1906, 34 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.
What does an ENERGY STAR score of 79 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 79 means the building performs better than about 79% of its national peers. BuildingCensus bands the score into report-card grades; 79 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. 100 Fifth Avenue's 49.4 kBtu/ft² across 250,671 sq ft works out to about 12.4 billion Btu (3,629 MWh-equivalent) in 2023. Its source EUI of 96.3 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 1,865,934 kWh of electricity and 60,110 therms of natural gas for the year.
Which law requires 100 Fifth Avenue to report its energy use?
100 Fifth 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:32791355:2023). 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.
More office buildings in New York City
- 130 W 42 St· 250,578 sq ft · score 97 (A)
- RAC ICC Doug 72-45 Doug Pkwy· 250,364 sq ft · score 90 (A)
- Brewster Building Lot 21· 250,292 sq ft
- 2100 BARTOW AVENUE - 2130855· 250,191 sq ft
- 205 West 39th Street· 250,157 sq ft · score 77 (B)
- 410 Park Avenue· 249,417 sq ft · score 93 (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 100 Fifth Avenue's energy grade?
100 Fifth Avenue scores 79 out of 100 on ENERGY STAR — band B, above median (70–84) — in its 2023 New York City disclosure. Scores are national percentiles against similar buildings; 75+ qualifies for ENERGY STAR certification.
How much energy does 100 Fifth Avenue use?
Its 2023 site energy-use intensity was 49.4 kBtu/ft² (96.3 kBtu/ft² source) across 250,671 sq ft, including 1,865,934 kWh of electricity and 60,110 therms of natural gas.
What are 100 Fifth Avenue's carbon emissions?
100 Fifth Avenue reported 1,012 tCO₂e of greenhouse-gas emissions (4.0 kgCO₂e/ft²) for 2023.
Where is 100 Fifth Avenue?
100 Fifth Avenue is in New York City, New York 10011. Its coordinates are 40.73688, -73.99299 (latitude, longitude), as published in the Energy and Water Data Disclosure file.
How big is 100 Fifth Avenue and when was it built?
100 Fifth Avenue has 250,671 sq ft of gross floor area, as reported in its 2023 disclosure. The disclosure lists 1906 as its year built. It is classed as office.
Is 100 Fifth 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, “100 Fifth Avenue, New York City, New York — 2023 benchmarking disclosure”, https://buildingcensus.com/buildings/new-york-city/100-fifth-avenue-8048fd0d (data as of October 2, 2026).