BuildingCensus
B

M066 (OECID: 0100074; BBL: 1015680008)

K-12 School in New York City, NY · 421 East 88th Street · 10128

At a glance

M066 (OECID: 0100074; BBL: 1015680008) is a 69,680-square-foot K-12 school at 421 East 88th Street in New York City, New York, built in 1920. In its 2024 New York City benchmarking disclosure it reported an ENERGY STAR score of 83 out of 100 (grade B), a site energy-use intensity of 42.5 kBtu/ft² and 231 tCO₂e of greenhouse-gas emissions. That score is higher than 71% of the 2,052 scored K-12 school buildings in New York City.

ENERGY STAR score
83
band B · 2024
Site EUI
42.5
kBtu/ft²
GHG emissions
231
tCO₂e
GHG intensity
3.3
kgCO₂e/ft²
Floor area
69,680
sq ft
Year built
1920
vintage
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85–10070–8455–691–54
This entry + 6 nearby

Local Law 84 (LL84) · reporting year 2024

Benchmarking record

FieldValue
ENERGY STAR score83 (band B)
Site EUI42.5 kBtu/ft²
Source EUI74.4 kBtu/ft²
GHG emissions231 tCO₂e
GHG intensity3.3 kgCO₂e/ft²
Electricity347,660 kWh
Natural gas17,767 therms
Water use45 kgal
Gross floor area69,680 sq ft
Source recordnyc:1633894:2024

The disclosure history

Year over year

YearScoreΔSite EUIGHG emissions
2024latest83-242.5 kBtu/ft²231 tCO₂e
202385+1237.9 kBtu/ft²209 tCO₂e
20227356.3 kBtu/ft²259 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.

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Ownership

No owning organisation shown. Names of private individuals in the disclosure are not published here.

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Location

Address
421 East 88th Street
State
New York
ZIP
10128
Coordinates
40.77786, -73.94763

Within ~1 km

Nearby benchmarked buildings

See also: most efficient in New York City · biggest emitters

How does M066 (OECID: 0100074; BBL: 1015680008) 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. M066 (OECID: 0100074; BBL: 1015680008)'s ENERGY STAR score of 83 compares with an average of 64 across the 2,052 that report a score; it scores higher than 71% of them and lower than 26%. Its site EUI of 42.5 kBtu/ft² is about 31% 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 3.3 kgCO₂e/ft² is about 31% below the group average of 4.8 kgCO₂e/ft².

At 69,680 sq ft, it is about 31% below the average floor area of 101,338 sq ft for those buildings. It was built in 1920, 33 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 M066 (OECID: 0100074; BBL: 1015680008)'s energy performance changed over time?

BuildingCensus holds 3 New York City disclosures for M066 (OECID: 0100074; BBL: 1015680008), covering report years 2022–2024. Its ENERGY STAR score went from 73 in 2022 to 83 in 2024 (+10 points); its best year on file was 2023, at 85. Site EUI moved from 56.3 kBtu/ft² (2022) to 42.5 kBtu/ft² (2024), a 25% decrease. Reported emissions went from 259 tCO₂e to 231 tCO₂e over the same span (down 11%).

What does an ENERGY STAR score of 83 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 83 means the building performs better than about 83% of its national peers. BuildingCensus bands the score into report-card grades; 83 falls in band B — above median (70–84). 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. M066 (OECID: 0100074; BBL: 1015680008)'s 42.5 kBtu/ft² across 69,680 sq ft works out to about 3 billion Btu (868 MWh-equivalent) in 2024. Its source EUI of 74.4 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 347,660 kWh of electricity, 17,767 therms of natural gas and 45 thousand gallons of water for the year.

Which law requires M066 (OECID: 0100074; BBL: 1015680008) to report its energy use?

M066 (OECID: 0100074; BBL: 1015680008) 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:1633894:2024). 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

Frequently asked questions

What is M066 (OECID: 0100074; BBL: 1015680008)'s energy grade?

M066 (OECID: 0100074; BBL: 1015680008) scores 83 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 M066 (OECID: 0100074; BBL: 1015680008) use?

Its 2024 site energy-use intensity was 42.5 kBtu/ft² (74.4 kBtu/ft² source) across 69,680 sq ft, including 347,660 kWh of electricity and 17,767 therms of natural gas.

What are M066 (OECID: 0100074; BBL: 1015680008)'s carbon emissions?

M066 (OECID: 0100074; BBL: 1015680008) reported 231 tCO₂e of greenhouse-gas emissions (3.3 kgCO₂e/ft²) for 2024.

Where is M066 (OECID: 0100074; BBL: 1015680008)?

M066 (OECID: 0100074; BBL: 1015680008) is at 421 East 88th Street, in New York City, New York 10128. Its coordinates are 40.77786, -73.94763 (latitude, longitude), as published in the Energy and Water Data Disclosure file.

How big is M066 (OECID: 0100074; BBL: 1015680008) and when was it built?

M066 (OECID: 0100074; BBL: 1015680008) has 69,680 sq ft of gross floor area, as reported in its 2024 disclosure. The disclosure lists 1920 as its year built. It is classed as K-12 school.

Is M066 (OECID: 0100074; BBL: 1015680008) 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, “M066 (OECID: 0100074; BBL: 1015680008), New York City, New York — 2024 benchmarking disclosure”, https://buildingcensus.com/buildings/new-york-city/m066-oecid-0100074-bbl-1015680008-6a59c2d5 (data as of October 2, 2026).