BPL_251_Kensington Branch Library
Library in New York City, NY · 4207 18th Ave · 11218
At a glance
BPL_251_Kensington Branch Library is a 18,300-square-foot library at 4207 18th Ave in New York City, New York, built in 2009. In its 2024 New York City benchmarking disclosure it reported a site energy-use intensity of 91.3 kBtu/ft² and 152 tCO₂e of greenhouse-gas emissions.
Local Law 84 (LL84) · reporting year 2024
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | — |
| Site EUI | 91.3 kBtu/ft² |
| Source EUI | 194.2 kBtu/ft² |
| GHG emissions | 152 tCO₂e |
| GHG intensity | 8.3 kgCO₂e/ft² |
| Electricity | 301,570 kWh |
| Natural gas | 6,413 therms |
| Water use | 132 kgal |
| Gross floor area | 18,300 sq ft |
| Source record | nyc:21355155:2024 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2024latest | — | 91.3 kBtu/ft² | 152 tCO₂e | |
| 2022 | — | 78.6 kBtu/ft² | 102 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
- 4207 18th Ave
- City
- New York City
- State
- New York
- ZIP
- 11218
- Coordinates
- 40.63149, -73.97557
Within ~1 km
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See also: most efficient in New York City · biggest emitters
How does BPL_251_Kensington 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 91.3 kBtu/ft² is about 18% 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 8.3 kgCO₂e/ft² is about 28% above the group average of 6.5 kgCO₂e/ft².
At 18,300 sq ft, it is about 67% below the average floor area of 55,576 sq ft for those buildings. It was built in 2009, 62 years later than the group's average year built (1947).
How has BPL_251_Kensington Branch Library's energy performance changed over time?
BuildingCensus holds 2 New York City disclosures for BPL_251_Kensington Branch Library, covering report years 2022, 2024. Site EUI moved from 78.6 kBtu/ft² (2022) to 91.3 kBtu/ft² (2024), an 16% increase. Reported emissions went from 102 tCO₂e to 152 tCO₂e over the same span (up 49%).
What does a site EUI of 91.3 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. BPL_251_Kensington Branch Library's 91.3 kBtu/ft² across 18,300 sq ft works out to about 1.7 billion Btu (490 MWh-equivalent) in 2024. Its source EUI of 194.2 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 301,570 kWh of electricity, 6,413 therms of natural gas and 132 thousand gallons of water for the year.
Which law requires BPL_251_Kensington Branch Library to report its energy use?
BPL_251_Kensington 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:21355155:2024). 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
- QPL_4745_Long Island City Community Library· 18,000 sq ft · EUI 90.8 kBtu/ft²
- NYPL_4627_St. Agnes Branch Library· 17,792 sq ft · EUI 101.8 kBtu/ft²
- NYPL_4610_Inwood Branch Library· 17,334 sq ft · EUI 0.0 kBtu/ft²
- NYPL_4631_Washington Heights Branch Library· 17,274 sq ft · EUI 78.7 kBtu/ft²
- NYPL_4644_Grand Concourse Branch Library· 16,874 sq ft · EUI 121.5 kBtu/ft²
- NYPL_4664_Woodstock Branch Library· 16,524 sq ft · EUI 88.8 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 BPL_251_Kensington Branch Library's energy grade?
BPL_251_Kensington Branch Library did not report an ENERGY STAR score in its 2024 disclosure, but its site energy-use intensity was 91.3 kBtu/ft².
How much energy does BPL_251_Kensington Branch Library use?
Its 2024 site energy-use intensity was 91.3 kBtu/ft² (194.2 kBtu/ft² source) across 18,300 sq ft, including 301,570 kWh of electricity and 6,413 therms of natural gas.
What are BPL_251_Kensington Branch Library's carbon emissions?
BPL_251_Kensington Branch Library reported 152 tCO₂e of greenhouse-gas emissions (8.3 kgCO₂e/ft²) for 2024.
Where is BPL_251_Kensington Branch Library?
BPL_251_Kensington Branch Library is at 4207 18th Ave, in New York City, New York 11218. Its coordinates are 40.63149, -73.97557 (latitude, longitude), as published in the Energy and Water Data Disclosure file.
How big is BPL_251_Kensington Branch Library and when was it built?
BPL_251_Kensington Branch Library has 18,300 sq ft of gross floor area, as reported in its 2024 disclosure. The disclosure lists 2009 as its year built. It is classed as library.
Is BPL_251_Kensington 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, “BPL_251_Kensington Branch Library, New York City, New York — 2024 benchmarking disclosure”, https://buildingcensus.com/buildings/new-york-city/bpl-251-kensington-branch-library-7d32c1f5 (data as of October 2, 2026).