M047 (OECID: 0100063; BBL: 1009040024)
K-12 School in New York City, NY · 223 East 23 Street · 10010
At a glance
M047 (OECID: 0100063; BBL: 1009040024) is a 141,660-square-foot K-12 school at 223 East 23 Street in New York City, New York, built in 1925. In its 2024 New York City benchmarking disclosure it reported an ENERGY STAR score of 71 out of 100 (grade B), a site energy-use intensity of 62.1 kBtu/ft² and 740 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 2024
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | 71 (band B) |
| Site EUI | 62.1 kBtu/ft² |
| Source EUI | 110.6 kBtu/ft² |
| GHG emissions | 740 tCO₂e |
| GHG intensity | 5.2 kgCO₂e/ft² |
| Electricity | 932,960 kWh |
| Natural gas | 0 therms |
| Gross floor area | 141,660 sq ft |
| Source record | nyc:1634363:2024 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2024latest | 71 | -4 | 62.1 kBtu/ft² | 740 tCO₂e |
| 2023 | 75 | +5 | 58.4 kBtu/ft² | 679 tCO₂e |
| 2022 | 70 | 67.0 kBtu/ft² | 691 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
- 223 East 23 Street
- City
- New York City
- State
- New York
- ZIP
- 10010
- Coordinates
- 40.73855, -73.98246
Within ~1 km
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See also: most efficient in New York City · biggest emitters
How does M047 (OECID: 0100063; BBL: 1009040024) 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. M047 (OECID: 0100063; BBL: 1009040024)'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 62.1 kBtu/ft² is roughly in line with the average of 61.3 kBtu/ft². Its emissions intensity of 5.2 kgCO₂e/ft² is roughly in line with the group average of 4.8 kgCO₂e/ft².
At 141,660 sq ft, it is about 40% above the average floor area of 101,338 sq ft for those buildings. It was built in 1925, 28 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 M047 (OECID: 0100063; BBL: 1009040024)'s energy performance changed over time?
BuildingCensus holds 3 New York City disclosures for M047 (OECID: 0100063; BBL: 1009040024), covering report years 2022–2024. Its ENERGY STAR score went from 70 in 2022 to 71 in 2024 (+1 points); its best year on file was 2023, at 75. Site EUI moved from 67.0 kBtu/ft² (2022) to 62.1 kBtu/ft² (2024), a 7% decrease. Reported emissions went from 691 tCO₂e to 740 tCO₂e over the same span (up 7%).
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. M047 (OECID: 0100063; BBL: 1009040024)'s 62.1 kBtu/ft² across 141,660 sq ft works out to about 8.8 billion Btu (2,578 MWh-equivalent) in 2024. Its source EUI of 110.6 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 932,960 kWh of electricity and 0 therms of natural gas for the year.
Which law requires M047 (OECID: 0100063; BBL: 1009040024) to report its energy use?
M047 (OECID: 0100063; BBL: 1009040024) 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:1634363:2024). 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 K-12 school buildings in New York City
- M050 (OECID: 0100064; BBL: 1016940001)· 141,600 sq ft · score 89 (A)
- K380 (OECID: 0301169; BBL: 3022360009)· 141,600 sq ft · score 94 (A)
- K398 (OECID: 0301263; BBL: 3045950015)· 141,600 sq ft · score 64 (C)
- K045 (OECID: 0300020; BBL: 3034270011)· 141,600 sq ft · score 69 (C)
- K308 (OECID: 0300303; BBL: 3016300001)· 141,600 sq ft · score 88 (A)
- 7031 Shore Road (Xaverian High School)· 141,381 sq ft · score 97 (A)
- 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 M047 (OECID: 0100063; BBL: 1009040024)'s energy grade?
M047 (OECID: 0100063; BBL: 1009040024) scores 71 out of 100 on ENERGY STAR — band B, above median (70–84) — in its 2024 New York City disclosure. Scores are national percentiles against similar buildings; 75+ qualifies for ENERGY STAR certification.
How much energy does M047 (OECID: 0100063; BBL: 1009040024) use?
Its 2024 site energy-use intensity was 62.1 kBtu/ft² (110.6 kBtu/ft² source) across 141,660 sq ft, including 932,960 kWh of electricity and 0 therms of natural gas.
What are M047 (OECID: 0100063; BBL: 1009040024)'s carbon emissions?
M047 (OECID: 0100063; BBL: 1009040024) reported 740 tCO₂e of greenhouse-gas emissions (5.2 kgCO₂e/ft²) for 2024.
Where is M047 (OECID: 0100063; BBL: 1009040024)?
M047 (OECID: 0100063; BBL: 1009040024) is at 223 East 23 Street, in New York City, New York 10010. Its coordinates are 40.73855, -73.98246 (latitude, longitude), as published in the Energy and Water Data Disclosure file.
How big is M047 (OECID: 0100063; BBL: 1009040024) and when was it built?
M047 (OECID: 0100063; BBL: 1009040024) has 141,660 sq ft of gross floor area, as reported in its 2024 disclosure. The disclosure lists 1925 as its year built. It is classed as K-12 school.
Is M047 (OECID: 0100063; BBL: 1009040024) 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, “M047 (OECID: 0100063; BBL: 1009040024), New York City, New York — 2024 benchmarking disclosure”, https://buildingcensus.com/buildings/new-york-city/m047-oecid-0100063-bbl-1009040024-b34d16e3 (data as of October 2, 2026).