NYPL_4657_Tremont Branch Library
Library in New York City, NY · 1866 Washington Ave · 10457
At a glance
NYPL_4657_Tremont Branch Library is a 11,900-square-foot library at 1866 Washington Ave in New York City, New York, built in 1905. In its 2024 New York City benchmarking disclosure it reported a site energy-use intensity of 125.7 kBtu/ft² and 111 tCO₂e of greenhouse-gas emissions.
Local Law 84 (LL84) · reporting year 2024
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | — |
| Site EUI | 125.7 kBtu/ft² |
| Source EUI | 205.9 kBtu/ft² |
| GHG emissions | 111 tCO₂e |
| GHG intensity | 9.3 kgCO₂e/ft² |
| Electricity | 147,265 kWh |
| Natural gas | 9,934 therms |
| Water use | 99 kgal |
| Gross floor area | 11,900 sq ft |
| Source record | nyc:21355503:2024 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2024latest | — | 125.7 kBtu/ft² | 111 tCO₂e | |
| 2023 | — | 125.7 kBtu/ft² | 104 tCO₂e | |
| 2022 | — | 154.0 kBtu/ft² | 118 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
- 1866 Washington Ave
- City
- New York City
- State
- New York
- ZIP
- 10457
- Coordinates
- 40.84623, -73.89849
Within ~1 km
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See also: most efficient in New York City · biggest emitters
How does NYPL_4657_Tremont Branch Library compare with other library buildings in New York City?
The latest disclosures cover 110 library buildings in New York City, out of 48,310 buildings citywide. Its site EUI of 125.7 kBtu/ft² is about 62% above the average of 77.5 kBtu/ft² — it uses more energy per square foot than the typical building in that group. Its emissions intensity of 9.3 kgCO₂e/ft² is about 43% above the group average of 6.5 kgCO₂e/ft².
At 11,900 sq ft, it is about 79% below the average floor area of 55,576 sq ft for those buildings. It was built in 1905, 42 years earlier than the group's average year built (1947).
How has NYPL_4657_Tremont Branch Library's energy performance changed over time?
BuildingCensus holds 3 New York City disclosures for NYPL_4657_Tremont Branch Library, covering report years 2022–2024. Site EUI moved from 154.0 kBtu/ft² (2022) to 125.7 kBtu/ft² (2024), a 18% decrease. Reported emissions went from 118 tCO₂e to 111 tCO₂e over the same span (down 7%).
What does a site EUI of 125.7 kBtu/ft² mean?
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. NYPL_4657_Tremont Branch Library's 125.7 kBtu/ft² across 11,900 sq ft works out to about 1.5 billion Btu (438 MWh-equivalent) in 2024. Its source EUI of 205.9 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 147,265 kWh of electricity, 9,934 therms of natural gas and 99 thousand gallons of water for the year.
Which law requires NYPL_4657_Tremont Branch Library to report its energy use?
NYPL_4657_Tremont Branch Library 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:21355503:2024). 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 library buildings in New York City
- NYPL_4632_Webster Branch Library· 11,801 sq ft · EUI 99.8 kBtu/ft²
- QPL_4740_Kew Gardens Hills Community Library· 11,666 sq ft · EUI 92.0 kBtu/ft²
- NYPL_4600_Columbus Branch Library· 11,554 sq ft · EUI 78.2 kBtu/ft²
- QPL_4769_Steinway (ALC) Community Library· 11,200 sq ft · EUI 72.3 kBtu/ft²
- NYPL_4634_Allerton Branch Library· 10,984 sq ft · EUI 55.1 kBtu/ft²
- NYPL_4688_Stapleton Branch Library· 10,860 sq ft · EUI 148.1 kBtu/ft²
- Library buildings in New York City· 110 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 NYPL_4657_Tremont Branch Library's energy grade?
NYPL_4657_Tremont Branch Library did not report an ENERGY STAR score in its 2024 disclosure, but its site energy-use intensity was 125.7 kBtu/ft².
How much energy does NYPL_4657_Tremont Branch Library use?
Its 2024 site energy-use intensity was 125.7 kBtu/ft² (205.9 kBtu/ft² source) across 11,900 sq ft, including 147,265 kWh of electricity and 9,934 therms of natural gas.
What are NYPL_4657_Tremont Branch Library's carbon emissions?
NYPL_4657_Tremont Branch Library reported 111 tCO₂e of greenhouse-gas emissions (9.3 kgCO₂e/ft²) for 2024.
Where is NYPL_4657_Tremont Branch Library?
NYPL_4657_Tremont Branch Library is at 1866 Washington Ave, in New York City, New York 10457. Its coordinates are 40.84623, -73.89849 (latitude, longitude), as published in the Energy and Water Data Disclosure file.
How big is NYPL_4657_Tremont Branch Library and when was it built?
NYPL_4657_Tremont Branch Library has 11,900 sq ft of gross floor area, as reported in its 2024 disclosure. The disclosure lists 1905 as its year built. It is classed as library.
Is NYPL_4657_Tremont Branch Library 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, “NYPL_4657_Tremont Branch Library, New York City, New York — 2024 benchmarking disclosure”, https://buildingcensus.com/buildings/new-york-city/nypl-4657-tremont-branch-library-75ad7dbb (data as of October 2, 2026).