CW Glorious Sun 505 Park Avenue
Office in New York City, NY · 503 Park Avenue · 10022
At a glance
CW Glorious Sun 505 Park Avenue is a 210,756-square-foot office building at 503 Park Avenue in New York City, New York, built in 1947. In its 2024 New York City benchmarking disclosure it reported an ENERGY STAR score of 90 out of 100 (grade A), a site energy-use intensity of 43.5 kBtu/ft² and 907 tCO₂e of greenhouse-gas emissions. That score is higher than 74% 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 | 90 (band A) |
| Site EUI | 43.5 kBtu/ft² |
| Source EUI | 98.8 kBtu/ft² |
| GHG emissions | 907 tCO₂e |
| GHG intensity | 4.3 kgCO₂e/ft² |
| Electricity | 1,794,405 kWh |
| Natural gas | 0 therms |
| Gross floor area | 210,756 sq ft |
| Source record | nyc:1733452:2024 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2024latest | 90 | +3 | 43.5 kBtu/ft² | 907 tCO₂e |
| 2023 | 87 | +3 | 42.6 kBtu/ft² | 911 tCO₂e |
| 2022 | 84 | 48.0 kBtu/ft² | 838 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
- 503 Park Avenue
- City
- New York City
- State
- New York
- ZIP
- 10022
- Coordinates
- 40.76306, -73.96968
Within ~1 km
Nearby benchmarked buildings
- 277 Park Avenuescore 64
Office · 1,897,643 sq ft
Office · 1,844,165 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 CW Glorious Sun 505 Park 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. CW Glorious Sun 505 Park Avenue's ENERGY STAR score of 90 compares with an average of 72 across the 2,519 that report a score; it scores higher than 74% of them and lower than 23%. Its site EUI of 43.5 kBtu/ft² is about 33% 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 4.3 kgCO₂e/ft² is about 26% below the group average of 5.8 kgCO₂e/ft².
At 210,756 sq ft, it is roughly in line with the average floor area of 205,440 sq ft for those buildings. It was built in 1947, 7 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 CW Glorious Sun 505 Park Avenue's energy performance changed over time?
BuildingCensus holds 3 New York City disclosures for CW Glorious Sun 505 Park Avenue, covering report years 2022–2024. Its ENERGY STAR score went from 84 in 2022 to 90 in 2024 (+6 points). Site EUI moved from 48.0 kBtu/ft² (2022) to 43.5 kBtu/ft² (2024), a 9% decrease. Reported emissions went from 838 tCO₂e to 907 tCO₂e over the same span (up 8%).
What does an ENERGY STAR score of 90 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 90 means the building performs better than about 90% of its national peers. BuildingCensus bands the score into report-card grades; 90 falls in band A — high performer (85–100). 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. CW Glorious Sun 505 Park Avenue's 43.5 kBtu/ft² across 210,756 sq ft works out to about 9.2 billion Btu (2,687 MWh-equivalent) in 2024. Its source EUI of 98.8 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 1,794,405 kWh of electricity and 0 therms of natural gas for the year.
Which law requires CW Glorious Sun 505 Park Avenue to report its energy use?
CW Glorious Sun 505 Park 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:1733452:2024). 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
- 211 East 43rd Street (209 E 43 ST)· 210,324 sq ft · score 88 (A)
- Test Tenant Office Space· 210,000 sq ft
- 381 PARK AVENUE SOUTH· 209,041 sq ft · score 80 (B)
- 25 WEST 39 STREET - [25 West 39th Street]· 208,529 sq ft · score 75 (B)
- 215 Lexington Ave, NY, NY 10016· 208,233 sq ft · EUI 63.2 kBtu/ft²
- 250 West 39th Street· 208,218 sq ft · score 99 (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 CW Glorious Sun 505 Park Avenue's energy grade?
CW Glorious Sun 505 Park Avenue scores 90 out of 100 on ENERGY STAR — band A, high performer (85–100) — in its 2024 New York City disclosure. Scores are national percentiles against similar buildings; 75+ qualifies for ENERGY STAR certification.
How much energy does CW Glorious Sun 505 Park Avenue use?
Its 2024 site energy-use intensity was 43.5 kBtu/ft² (98.8 kBtu/ft² source) across 210,756 sq ft, including 1,794,405 kWh of electricity and 0 therms of natural gas.
What are CW Glorious Sun 505 Park Avenue's carbon emissions?
CW Glorious Sun 505 Park Avenue reported 907 tCO₂e of greenhouse-gas emissions (4.3 kgCO₂e/ft²) for 2024.
Where is CW Glorious Sun 505 Park Avenue?
CW Glorious Sun 505 Park Avenue is at 503 Park Avenue, in New York City, New York 10022. Its coordinates are 40.76306, -73.96968 (latitude, longitude), as published in the Energy and Water Data Disclosure file.
How big is CW Glorious Sun 505 Park Avenue and when was it built?
CW Glorious Sun 505 Park Avenue has 210,756 sq ft of gross floor area, as reported in its 2024 disclosure. The disclosure lists 1947 as its year built. It is classed as office.
Is CW Glorious Sun 505 Park 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, “CW Glorious Sun 505 Park Avenue, New York City, New York — 2024 benchmarking disclosure”, https://buildingcensus.com/buildings/new-york-city/cw-glorious-sun-505-park-avenue-67952690 (data as of October 2, 2026).