Rocklyn: 259 Essex St
K-12 School in New York City, NY · 259 Essex St · 11208
At a glance
Rocklyn: 259 Essex St is a 52,449-square-foot K-12 school in New York City, New York, built in 1926. In its 2023 New York City benchmarking disclosure it reported an ENERGY STAR score of 71 out of 100 (grade B), a site energy-use intensity of 32.3 kBtu/ft² and 163 tCO₂e of greenhouse-gas emissions. That score is higher than 52% of the 2,052 scored K-12 school buildings in New York City.
Local Law 84 (LL84) · reporting year 2023
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | 71 (band B) |
| Site EUI | 32.3 kBtu/ft² |
| Source EUI | 77.9 kBtu/ft² |
| GHG emissions | 163 tCO₂e |
| GHG intensity | 3.1 kgCO₂e/ft² |
| Electricity | 386,207 kWh |
| Natural gas | 3,759 therms |
| Water use | 484 kgal |
| Gross floor area | 52,449 sq ft |
| Source record | nyc:15365332:2023 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2023latest | 71 | ±0 | 32.3 kBtu/ft² | 163 tCO₂e |
| 2022 | 71 | 36.4 kBtu/ft² | 145 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
- 259 Essex St
- City
- New York City
- State
- New York
- ZIP
- 11208
- Coordinates
- 40.67767, -73.88262
Within ~1 km
Nearby benchmarked buildings
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- Chestnut Commonsscore 86
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- Chestnut Commonsscore 99
Multifamily Housing · 220,000 sq ft
- Sutter Gardensscore 44
Multifamily Housing · 217,833 sq ft
K-12 School · 212,400 sq ft
See also: most efficient in New York City · biggest emitters
How does Rocklyn: 259 Essex St compare with other K-12 school buildings in New York City?
The latest disclosures cover 2,301 K-12 school buildings in New York City, out of 48,310 buildings citywide. Rocklyn: 259 Essex St's ENERGY STAR score of 71 compares with an average of 64 across the 2,052 that report a score; it scores higher than 52% of them and lower than 47%. Its site EUI of 32.3 kBtu/ft² is about half of the average of 61.3 kBtu/ft² — it uses less energy per square foot than the typical building in that group. Its emissions intensity of 3.1 kgCO₂e/ft² is about 35% below the group average of 4.8 kgCO₂e/ft².
At 52,449 sq ft, it is about half of the average floor area of 101,338 sq ft for those buildings. It was built in 1926, 27 years earlier than the group's average year built (1954). Across all 24 jurisdictions BuildingCensus covers, the 6,548 K-12 school buildings average an ENERGY STAR score of 64 and a site EUI of 52.7 kBtu/ft².
How has Rocklyn: 259 Essex St's energy performance changed over time?
BuildingCensus holds 2 New York City disclosures for Rocklyn: 259 Essex St, covering report years 2022–2023. Its ENERGY STAR score was 71 in both 2022 and 2023. Site EUI moved from 36.4 kBtu/ft² (2022) to 32.3 kBtu/ft² (2023), a 11% decrease. Reported emissions went from 145 tCO₂e to 163 tCO₂e over the same span (up 12%).
What does an ENERGY STAR score of 71 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 71 means the building performs better than about 71% of its national peers. BuildingCensus bands the score into report-card grades; 71 falls in band B — above median (70–84). It sits 4 points below 75, the threshold for ENERGY STAR certification. 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. Rocklyn: 259 Essex St's 32.3 kBtu/ft² across 52,449 sq ft works out to about 1.7 billion Btu (496 MWh-equivalent) in 2023. Its source EUI of 77.9 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 386,207 kWh of electricity, 3,759 therms of natural gas and 484 thousand gallons of water for the year.
Which law requires Rocklyn: 259 Essex St to report its energy use?
Rocklyn: 259 Essex St 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:15365332:2023). 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 K-12 school buildings in New York City
- X347 (OECID: 0201545; BBL: 2031880014)· 52,430 sq ft · score 29 (D)
- 64 - St Elizabeth· 52,288 sq ft · score 20 (D)
- 0064 - St Elizabeth Church - School· 52,288 sq ft · score 87 (A)
- Chapin School - 1081317· 52,199 sq ft
- Chapin School - 1081314· 52,196 sq ft
- Chapin School - 1081315· 52,196 sq ft
- K-12 School buildings in New York City· 2,301 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 Rocklyn: 259 Essex St's energy grade?
Rocklyn: 259 Essex St scores 71 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 Rocklyn: 259 Essex St use?
Its 2023 site energy-use intensity was 32.3 kBtu/ft² (77.9 kBtu/ft² source) across 52,449 sq ft, including 386,207 kWh of electricity and 3,759 therms of natural gas.
What are Rocklyn: 259 Essex St's carbon emissions?
Rocklyn: 259 Essex St reported 163 tCO₂e of greenhouse-gas emissions (3.1 kgCO₂e/ft²) for 2023.
Where is Rocklyn: 259 Essex St?
Rocklyn: 259 Essex St is in New York City, New York 11208. Its coordinates are 40.67767, -73.88262 (latitude, longitude), as published in the Energy and Water Data Disclosure file.
How big is Rocklyn: 259 Essex St and when was it built?
Rocklyn: 259 Essex St has 52,449 sq ft of gross floor area, as reported in its 2023 disclosure. The disclosure lists 1926 as its year built. It is classed as K-12 school.
Is Rocklyn: 259 Essex St 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, “Rocklyn: 259 Essex St, New York City, New York — 2023 benchmarking disclosure”, https://buildingcensus.com/buildings/new-york-city/rocklyn-259-essex-st-4ff47500 (data as of October 2, 2026).