35 E 21st - LF Gramercy Property Co
Office in New York City, NY · 35 East 21st Street · 10010
At a glance
35 E 21st - LF Gramercy Property Co is a 100,000-square-foot office building at 35 East 21st Street in New York City, New York, built in 1903. In its 2023 New York City benchmarking disclosure it reported an ENERGY STAR score of 91 out of 100 (grade A), a site energy-use intensity of 33.5 kBtu/ft² and 348 tCO₂e of greenhouse-gas emissions. That score is higher than 77% 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 | 91 (band A) |
| Site EUI | 33.5 kBtu/ft² |
| Source EUI | 88.8 kBtu/ft² |
| GHG emissions | 348 tCO₂e |
| GHG intensity | 3.5 kgCO₂e/ft² |
| Electricity | 899,005 kWh |
| Natural gas | 2,787 therms |
| Gross floor area | 100,000 sq ft |
| Source record | nyc:10550259:2023 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2023latest | 91 | ±0 | 33.5 kBtu/ft² | 348 tCO₂e |
| 2022 | 91 | 35.2 kBtu/ft² | 283 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
- 35 East 21st Street
- City
- New York City
- State
- New York
- ZIP
- 10010
- Coordinates
- 40.73958, -73.98887
Within ~1 km
Nearby benchmarked buildings
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- 51 Madisonscore 79
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- One Madison Avenuescore —
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- ConEd Irving Placescore 55
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- Benchmarking Group - 3score —
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See also: most efficient in New York City · biggest emitters
How does 35 E 21st - LF Gramercy Property Co 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. 35 E 21st - LF Gramercy Property Co's ENERGY STAR score of 91 compares with an average of 72 across the 2,519 that report a score; it scores higher than 77% of them and lower than 21%. Its site EUI of 33.5 kBtu/ft² is about half of 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 3.5 kgCO₂e/ft² is about 40% below the group average of 5.8 kgCO₂e/ft².
At 100,000 sq ft, it is about half of the average floor area of 205,440 sq ft for those buildings. It was built in 1903, 37 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 35 E 21st - LF Gramercy Property Co's energy performance changed over time?
BuildingCensus holds 2 New York City disclosures for 35 E 21st - LF Gramercy Property Co, covering report years 2022–2023. Its ENERGY STAR score was 91 in both 2022 and 2023. Site EUI moved from 35.2 kBtu/ft² (2022) to 33.5 kBtu/ft² (2023), a 5% decrease. Reported emissions went from 283 tCO₂e to 348 tCO₂e over the same span (up 23%).
What does an ENERGY STAR score of 91 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 91 means the building performs better than about 91% of its national peers. BuildingCensus bands the score into report-card grades; 91 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. 35 E 21st - LF Gramercy Property Co's 33.5 kBtu/ft² across 100,000 sq ft works out to about 3.4 billion Btu (982 MWh-equivalent) in 2023. Its source EUI of 88.8 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 899,005 kWh of electricity and 2,787 therms of natural gas for the year.
Which law requires 35 E 21st - LF Gramercy Property Co to report its energy use?
35 E 21st - LF Gramercy Property Co 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:10550259:2023). 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
- 154 Scott Avenue· 99,700 sq ft · score 78 (B)
- 321 E 61 St (Joy)· 99,519 sq ft · score 88 (A)
- 239 Butler Street· 99,500 sq ft · EUI 0.0 kBtu/ft²
- Justin Management: 127 W 26th St· 99,478 sq ft · score 90 (A)
- 147 West 35th Street· 99,184 sq ft · score 86 (A)
- First Pioneer - 33-02 Skillman Avenue· 99,000 sq ft · score 97 (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 35 E 21st - LF Gramercy Property Co's energy grade?
35 E 21st - LF Gramercy Property Co scores 91 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 35 E 21st - LF Gramercy Property Co use?
Its 2023 site energy-use intensity was 33.5 kBtu/ft² (88.8 kBtu/ft² source) across 100,000 sq ft, including 899,005 kWh of electricity and 2,787 therms of natural gas.
What are 35 E 21st - LF Gramercy Property Co's carbon emissions?
35 E 21st - LF Gramercy Property Co reported 348 tCO₂e of greenhouse-gas emissions (3.5 kgCO₂e/ft²) for 2023.
Where is 35 E 21st - LF Gramercy Property Co?
35 E 21st - LF Gramercy Property Co is at 35 East 21st Street, in New York City, New York 10010. Its coordinates are 40.73958, -73.98887 (latitude, longitude), as published in the Energy and Water Data Disclosure file.
How big is 35 E 21st - LF Gramercy Property Co and when was it built?
35 E 21st - LF Gramercy Property Co has 100,000 sq ft of gross floor area, as reported in its 2023 disclosure. The disclosure lists 1903 as its year built. It is classed as office.
Is 35 E 21st - LF Gramercy Property Co 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, “35 E 21st - LF Gramercy Property Co, New York City, New York — 2023 benchmarking disclosure”, https://buildingcensus.com/buildings/new-york-city/35-e-21st-lf-gramercy-property-co-e94f9826 (data as of October 2, 2026).