Saint Ann's School-Boswoth Building
K-12 School in New York City, NY · 129 Pierrepont Street · 11201
At a glance
Saint Ann's School-Boswoth Building is a 116,863-square-foot K-12 school at 129 Pierrepont Street in New York City, New York, built in 1906. In its 2024 New York City benchmarking disclosure it reported an ENERGY STAR score of 81 out of 100 (grade B), a site energy-use intensity of 49.9 kBtu/ft² and 485 tCO₂e of greenhouse-gas emissions. That score is higher than 68% 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 | 81 (band B) |
| Site EUI | 49.9 kBtu/ft² |
| Source EUI | 94.7 kBtu/ft² |
| GHG emissions | 485 tCO₂e |
| GHG intensity | 4.2 kgCO₂e/ft² |
| Electricity | 828,611 kWh |
| Natural gas | 29,996 therms |
| Water use | 1,796 kgal |
| Gross floor area | 116,863 sq ft |
| Source record | nyc:33212099:2024 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2024latest | 81 | +4 | 49.9 kBtu/ft² | 485 tCO₂e |
| 2023 | 77 | 52.9 kBtu/ft² | 495 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
- 129 Pierrepont Street
- City
- New York City
- State
- New York
- ZIP
- 11201
- Coordinates
- 40.69503, -73.99238
Within ~1 km
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See also: most efficient in New York City · biggest emitters
How does Saint Ann's School-Boswoth Building 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. Saint Ann's School-Boswoth Building's ENERGY STAR score of 81 compares with an average of 64 across the 2,052 that report a score; it scores higher than 68% of them and lower than 30%. Its site EUI of 49.9 kBtu/ft² is about 19% 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 4.2 kgCO₂e/ft² is about 14% below the group average of 4.8 kgCO₂e/ft².
At 116,863 sq ft, it is about 15% above the average floor area of 101,338 sq ft for those buildings. It was built in 1906, 47 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 Saint Ann's School-Boswoth Building's energy performance changed over time?
BuildingCensus holds 2 New York City disclosures for Saint Ann's School-Boswoth Building, covering report years 2023–2024. Its ENERGY STAR score went from 77 in 2023 to 81 in 2024 (+4 points). Site EUI moved from 52.9 kBtu/ft² (2023) to 49.9 kBtu/ft² (2024), a 6% decrease. Reported emissions went from 495 tCO₂e to 485 tCO₂e over the same span (down 2%).
What does an ENERGY STAR score of 81 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 81 means the building performs better than about 81% of its national peers. BuildingCensus bands the score into report-card grades; 81 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. Saint Ann's School-Boswoth Building's 49.9 kBtu/ft² across 116,863 sq ft works out to about 5.8 billion Btu (1,709 MWh-equivalent) in 2024. Its source EUI of 94.7 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 828,611 kWh of electricity, 29,996 therms of natural gas and 1,796 thousand gallons of water for the year.
Which law requires Saint Ann's School-Boswoth Building to report its energy use?
Saint Ann's School-Boswoth Building 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:33212099:2024). 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
- R006 (OECID: 0500432; BBL: 5077600001)· 116,525 sq ft · score 26 (D)
- R044 (OECID: 0500067; BBL: 5012180001)· 116,500 sq ft · score 80 (B)
- X043 (OECID: 0200079; BBL: 2022800040)· 116,460 sq ft · score 78 (B)
- Q152 (OECID: 0400139; BBL: 4011840014)· 116,431 sq ft · score 23 (D)
- K102 (OECID: 0300113; BBL: 3058900001)· 116,400 sq ft · score 75 (B)
- K120 (OECID: 0300129; BBL: 3031370026)· 116,400 sq ft · score 78 (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 Saint Ann's School-Boswoth Building's energy grade?
Saint Ann's School-Boswoth Building scores 81 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 Saint Ann's School-Boswoth Building use?
Its 2024 site energy-use intensity was 49.9 kBtu/ft² (94.7 kBtu/ft² source) across 116,863 sq ft, including 828,611 kWh of electricity and 29,996 therms of natural gas.
What are Saint Ann's School-Boswoth Building's carbon emissions?
Saint Ann's School-Boswoth Building reported 485 tCO₂e of greenhouse-gas emissions (4.2 kgCO₂e/ft²) for 2024.
Where is Saint Ann's School-Boswoth Building?
Saint Ann's School-Boswoth Building is at 129 Pierrepont Street, in New York City, New York 11201. Its coordinates are 40.69503, -73.99238 (latitude, longitude), as published in the Energy and Water Data Disclosure file.
How big is Saint Ann's School-Boswoth Building and when was it built?
Saint Ann's School-Boswoth Building has 116,863 sq ft of gross floor area, as reported in its 2024 disclosure. The disclosure lists 1906 as its year built. It is classed as K-12 school.
Is Saint Ann's School-Boswoth Building 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, “Saint Ann's School-Boswoth Building, New York City, New York — 2024 benchmarking disclosure”, https://buildingcensus.com/buildings/new-york-city/saint-ann-s-school-boswoth-building-cda23d49 (data as of October 2, 2026).