525 Lexington Avenue (NY Marriott East Side)
Hotel in New York City, NY · 525 Lexington Avenue · 10017
At a glance
525 Lexington Avenue (NY Marriott East Side) is a 406,261-square-foot hotel in New York City, New York, built in 1923. In its 2023 New York City benchmarking disclosure it reported an ENERGY STAR score of 99 out of 100 (grade A), a site energy-use intensity of 42.6 kBtu/ft² and 1,360 tCO₂e of greenhouse-gas emissions. That score is higher than 95% of the 853 scored hotel buildings in New York City.
Local Law 84 (LL84) · reporting year 2023
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | 99 (band A) |
| Site EUI | 42.6 kBtu/ft² |
| Source EUI | 78.8 kBtu/ft² |
| GHG emissions | 1,360 tCO₂e |
| GHG intensity | 3.3 kgCO₂e/ft² |
| Electricity | 2,321,890 kWh |
| Natural gas | 93,818 therms |
| Gross floor area | 406,261 sq ft |
| Source record | nyc:3600728:2023 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2023latest | 99 | -1 | 42.6 kBtu/ft² | 1,360 tCO₂e |
| 2022 | 100 | 47.6 kBtu/ft² | 1,210 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
- 525 Lexington Avenue
- City
- New York City
- State
- New York
- ZIP
- 10017
- Coordinates
- 40.75568, -73.97294
Within ~1 km
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See also: most efficient in New York City · biggest emitters
How does 525 Lexington Avenue (NY Marriott East Side) compare with other hotel buildings in New York City?
The latest disclosures cover 970 hotel buildings in New York City, out of 48,310 buildings citywide. 525 Lexington Avenue (NY Marriott East Side)'s ENERGY STAR score of 99 compares with an average of 50 across the 853 that report a score; it scores higher than 95% of them and lower than 4%. Its site EUI of 42.6 kBtu/ft² is about half of the average of 94.3 kBtu/ft² — it uses less energy per square foot than the typical building in that group. Its emissions intensity of 3.3 kgCO₂e/ft² is about 58% below the group average of 7.8 kgCO₂e/ft².
At 406,261 sq ft, it is about 196% above the average floor area of 137,256 sq ft for those buildings. It was built in 1923, 52 years earlier than the group's average year built (1975). Across all 24 jurisdictions BuildingCensus covers, the 3,812 hotel buildings average an ENERGY STAR score of 65 and a site EUI of 77.8 kBtu/ft².
How has 525 Lexington Avenue (NY Marriott East Side)'s energy performance changed over time?
BuildingCensus holds 2 New York City disclosures for 525 Lexington Avenue (NY Marriott East Side), covering report years 2022–2023. Its ENERGY STAR score went from 100 in 2022 to 99 in 2023 (-1 points); its best year on file was 2022, at 100. Site EUI moved from 47.6 kBtu/ft² (2022) to 42.6 kBtu/ft² (2023), a 11% decrease. Reported emissions went from 1,210 tCO₂e to 1,360 tCO₂e over the same span (up 12%).
What does an ENERGY STAR score of 99 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 99 means the building performs better than about 99% of its national peers. BuildingCensus bands the score into report-card grades; 99 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. 525 Lexington Avenue (NY Marriott East Side)'s 42.6 kBtu/ft² across 406,261 sq ft works out to about 17.3 billion Btu (5,072 MWh-equivalent) in 2023. Its source EUI of 78.8 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 2,321,890 kWh of electricity and 93,818 therms of natural gas for the year.
Which law requires 525 Lexington Avenue (NY Marriott East Side) to report its energy use?
525 Lexington Avenue (NY Marriott East Side) 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:3600728:2023). 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 hotel buildings in New York City
- Triumph Hotels - 228 West 47th St (Edison Hotel)· 399,325 sq ft · score 29 (D)
- Hotel Edison· 399,325 sq ft · score 19 (D)
- The Dominick· 390,337 sq ft · score 25 (D)
- Dominick Hotel· 390,337 sq ft · score 31 (D)
- 145 West 47th Street· 388,514 sq ft · score 76 (B)
- 1717 Broadway· 387,994 sq ft · score 61 (C)
- Hotel buildings in New York City· 970 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 525 Lexington Avenue (NY Marriott East Side)'s energy grade?
525 Lexington Avenue (NY Marriott East Side) scores 99 out of 100 on ENERGY STAR — band A, high performer (85–100) — in its 2023 New York City disclosure. Scores are national percentiles against similar buildings; 75+ qualifies for ENERGY STAR certification.
How much energy does 525 Lexington Avenue (NY Marriott East Side) use?
Its 2023 site energy-use intensity was 42.6 kBtu/ft² (78.8 kBtu/ft² source) across 406,261 sq ft, including 2,321,890 kWh of electricity and 93,818 therms of natural gas.
What are 525 Lexington Avenue (NY Marriott East Side)'s carbon emissions?
525 Lexington Avenue (NY Marriott East Side) reported 1,360 tCO₂e of greenhouse-gas emissions (3.3 kgCO₂e/ft²) for 2023.
Where is 525 Lexington Avenue (NY Marriott East Side)?
525 Lexington Avenue (NY Marriott East Side) is in New York City, New York 10017. Its coordinates are 40.75568, -73.97294 (latitude, longitude), as published in the Energy and Water Data Disclosure file.
How big is 525 Lexington Avenue (NY Marriott East Side) and when was it built?
525 Lexington Avenue (NY Marriott East Side) has 406,261 sq ft of gross floor area, as reported in its 2023 disclosure. The disclosure lists 1923 as its year built. It is classed as hotel.
Is 525 Lexington Avenue (NY Marriott East Side) 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, “525 Lexington Avenue (NY Marriott East Side), New York City, New York — 2023 benchmarking disclosure”, https://buildingcensus.com/buildings/new-york-city/525-lexington-avenue-ny-marriott-east-side-a9b6bfbe (data as of October 2, 2026).