521 Fifth Avenue
Office in New York City, NY · 10175
At a glance
521 Fifth Avenue is a 446,045-square-foot office building in New York City, New York, built in 1928.
Local Law 84 (LL84) · reporting year 2024
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | — |
| Site EUI | — |
| Source EUI | — |
| GHG emissions | — |
| GHG intensity | — |
| Electricity | 4,350,633 kWh |
| Natural gas | 8,858 therms |
| Water use | 8,218 kgal |
| Gross floor area | 446,045 sq ft |
| Source record | nyc:3118703:2024 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2024latest | — | — | — | |
| 2023 | 70 | +3 | 65.6 kBtu/ft² | 2,539 tCO₂e |
| 2022 | 67 | 68.8 kBtu/ft² | 2,301 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.
Own or manage this building? Claim it to correct the record and get compliance alerts.
Location
- Address
- 521 Fifth Avenue
- City
- New York City
- State
- New York
- ZIP
- 10175
- Coordinates
- 40.75408, -73.97993
Within ~1 km
Nearby benchmarked buildings
Office · 8,053,115 sq ft
- Metlife Building (200 Park)score 69
Office · 2,993,388 sq ft
Office · 2,862,565 sq ft
- ESRT - Empire State Buildingscore 78
Office · 2,852,257 sq ft
- 1633 Broadway - Paramount Plazascore 75
Office · 2,837,932 sq ft
- 1221 Avenue of the Americasscore 86
Office · 2,636,182 sq ft
See also: most efficient in New York City · biggest emitters
How does 521 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.
At 446,045 sq ft, it is about twice 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 521 Fifth Avenue's energy performance changed over time?
BuildingCensus holds 3 New York City disclosures for 521 Fifth Avenue, covering report years 2022–2024. Its ENERGY STAR score went from 67 in 2022 to 70 in 2023 (+3 points). Site EUI moved from 68.8 kBtu/ft² (2022) to 65.6 kBtu/ft² (2023), a 5% decrease. Reported emissions went from 2,301 tCO₂e to 2,539 tCO₂e over the same span (up 10%).
Which law requires 521 Fifth Avenue to report its energy use?
521 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 2024 disclosure (source record nyc:3118703:2024). 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
- 641 Lexington Avenue· 445,690 sq ft · score 78 (B)
- 261 5th Avenue· 444,716 sq ft · score 97 (A)
- 200 Varick Associates· 444,211 sq ft · EUI 63.1 kBtu/ft²
- 55 Water, LLC· 443,761 sq ft · score 40 (D)
- Landy Michaels Rlty Corp· 442,034 sq ft · score 59 (C)
- 3611 14 Ave· 442,034 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 521 Fifth Avenue's energy grade?
521 Fifth Avenue did not report an ENERGY STAR score in its 2024 disclosure.
How much energy does 521 Fifth Avenue use?
No energy-use intensity was reported for 2024.
What are 521 Fifth Avenue's carbon emissions?
No greenhouse-gas emissions figure was reported for 2024.
Where is 521 Fifth Avenue?
521 Fifth Avenue is in New York City, New York 10175. Its coordinates are 40.75408, -73.97993 (latitude, longitude), as published in the Energy and Water Data Disclosure file.
How big is 521 Fifth Avenue and when was it built?
521 Fifth Avenue has 446,045 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 521 Fifth 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, “521 Fifth Avenue, New York City, New York — 2024 benchmarking disclosure”, https://buildingcensus.com/buildings/new-york-city/521-fifth-avenue-e7c1f90a (data as of October 2, 2026).