Rocklyn: St Thomas Aquinas (3078600017)
K-12 School in New York City, NY · 3874 FLATLANDS AVENUE · 11234
At a glance
Rocklyn: St Thomas Aquinas (3078600017) is a 55,994-square-foot K-12 school at 3874 FLATLANDS AVENUE in New York City, New York, built in 1950. In its 2023 New York City benchmarking disclosure it reported an ENERGY STAR score of 96 out of 100 (grade A), a site energy-use intensity of 23.0 kBtu/ft² and 125 tCO₂e of greenhouse-gas emissions. That score is higher than 92% 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 | 96 (band A) |
| Site EUI | 23.0 kBtu/ft² |
| Source EUI | 43.2 kBtu/ft² |
| GHG emissions | 125 tCO₂e |
| GHG intensity | 2.1 kgCO₂e/ft² |
| Electricity | 195,405 kWh |
| Gross floor area | 55,994 sq ft |
| Source record | nyc:33964469:2023 |
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
- 3874 FLATLANDS AVENUE
- City
- New York City
- State
- New York
- ZIP
- 11234
- Coordinates
- 40.62033, -73.93674
Within ~1 km
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See also: most efficient in New York City · biggest emitters
How does Rocklyn: St Thomas Aquinas (3078600017) 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: St Thomas Aquinas (3078600017)'s ENERGY STAR score of 96 compares with an average of 64 across the 2,052 that report a score; it scores higher than 92% of them and lower than 7%. Its site EUI of 23.0 kBtu/ft² is about 62% below 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 2.1 kgCO₂e/ft² is about 56% below the group average of 4.8 kgCO₂e/ft².
At 55,994 sq ft, it is about 45% below the average floor area of 101,338 sq ft for those buildings. It was built in 1950, 3 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.
What does an ENERGY STAR score of 96 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 96 means the building performs better than about 96% of its national peers. BuildingCensus bands the score into report-card grades; 96 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. Rocklyn: St Thomas Aquinas (3078600017)'s 23.0 kBtu/ft² across 55,994 sq ft works out to about 1.3 billion Btu (377 MWh-equivalent) in 2023. Its source EUI of 43.2 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 195,405 kWh of electricity for the year.
Which law requires Rocklyn: St Thomas Aquinas (3078600017) to report its energy use?
Rocklyn: St Thomas Aquinas (3078600017) 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:33964469:2023). 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
- Rocklyn: St Gabriel (4013770016)· 55,918 sq ft · score 61 (C)
- R038, R816 (OECID: 0500061; BBL: 5037320006)· 55,860 sq ft · score 74 (B)
- 0256 - St Philip Neri School· 55,650 sq ft · score 59 (C)
- Brooklyn Excelsior Charter School· 55,627 sq ft · score 21 (D)
- M661 (OECID: 0100185; BBL: 1009210064)· 55,260 sq ft · score 64 (C)
- K137 (OECID: 0300144; BBL: 3015100001)· 55,200 sq ft · score 80 (B)
- 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: St Thomas Aquinas (3078600017)'s energy grade?
Rocklyn: St Thomas Aquinas (3078600017) scores 96 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 Rocklyn: St Thomas Aquinas (3078600017) use?
Its 2023 site energy-use intensity was 23.0 kBtu/ft² (43.2 kBtu/ft² source) across 55,994 sq ft, including 195,405 kWh of electricity.
What are Rocklyn: St Thomas Aquinas (3078600017)'s carbon emissions?
Rocklyn: St Thomas Aquinas (3078600017) reported 125 tCO₂e of greenhouse-gas emissions (2.1 kgCO₂e/ft²) for 2023.
Where is Rocklyn: St Thomas Aquinas (3078600017)?
Rocklyn: St Thomas Aquinas (3078600017) is at 3874 FLATLANDS AVENUE, in New York City, New York 11234. Its coordinates are 40.62033, -73.93674 (latitude, longitude), as published in the Energy and Water Data Disclosure file.
How big is Rocklyn: St Thomas Aquinas (3078600017) and when was it built?
Rocklyn: St Thomas Aquinas (3078600017) has 55,994 sq ft of gross floor area, as reported in its 2023 disclosure. The disclosure lists 1950 as its year built. It is classed as K-12 school.
Is Rocklyn: St Thomas Aquinas (3078600017) 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: St Thomas Aquinas (3078600017), New York City, New York — 2023 benchmarking disclosure”, https://buildingcensus.com/buildings/new-york-city/rocklyn-st-thomas-aquinas-3078600017-3e8fe269 (data as of October 2, 2026).