NYPL_4644_Grand Concourse Branch Library
Library in New York City, NY · 155 East 173rd St · 10457
At a glance
NYPL_4644_Grand Concourse Branch Library is a 16,874-square-foot library at 155 East 173rd St in New York City, New York, built in 1959. In its 2024 New York City benchmarking disclosure it reported a site energy-use intensity of 121.5 kBtu/ft² and 160 tCO₂e of greenhouse-gas emissions.
Local Law 84 (LL84) · reporting year 2024
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | — |
| Site EUI | 121.5 kBtu/ft² |
| Source EUI | 213.2 kBtu/ft² |
| GHG emissions | 160 tCO₂e |
| GHG intensity | 9.5 kgCO₂e/ft² |
| Electricity | 241,752 kWh |
| Natural gas | 12,259 therms |
| Gross floor area | 16,874 sq ft |
| Source record | nyc:21355498:2024 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2024latest | — | 121.5 kBtu/ft² | 160 tCO₂e | |
| 2023 | — | 113.9 kBtu/ft² | 146 tCO₂e | |
| 2022 | — | 117.6 kBtu/ft² | 121 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
- 155 East 173rd St
- City
- New York City
- State
- New York
- ZIP
- 10457
- Coordinates
- 40.84382, -73.91018
Within ~1 km
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See also: most efficient in New York City · biggest emitters
How does NYPL_4644_Grand Concourse 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 121.5 kBtu/ft² is about 57% 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 9.5 kgCO₂e/ft² is about 46% above the group average of 6.5 kgCO₂e/ft².
At 16,874 sq ft, it is about 70% below the average floor area of 55,576 sq ft for those buildings. It was built in 1959, 12 years later than the group's average year built (1947).
How has NYPL_4644_Grand Concourse Branch Library's energy performance changed over time?
BuildingCensus holds 3 New York City disclosures for NYPL_4644_Grand Concourse Branch Library, covering report years 2022–2024. Site EUI moved from 117.6 kBtu/ft² (2022) to 121.5 kBtu/ft² (2024), an 3% increase. Reported emissions went from 121 tCO₂e to 160 tCO₂e over the same span (up 33%).
What does a site EUI of 121.5 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_4644_Grand Concourse Branch Library's 121.5 kBtu/ft² across 16,874 sq ft works out to about 2.1 billion Btu (601 MWh-equivalent) in 2024. Its source EUI of 213.2 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 241,752 kWh of electricity and 12,259 therms of natural gas for the year.
Which law requires NYPL_4644_Grand Concourse Branch Library to report its energy use?
NYPL_4644_Grand Concourse 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:21355498:2024). 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_4664_Woodstock Branch Library· 16,524 sq ft · EUI 88.8 kBtu/ft²
- BPL_222_Bay Ridge Branch Library· 16,506 sq ft · EUI 104.7 kBtu/ft²
- NYPL_4643_Francis Martin Branch Library· 16,486 sq ft · EUI 95.3 kBtu/ft²
- BPL_241_Eastern Parkway Branch Library and Learning Center· 16,024 sq ft · EUI 80.9 kBtu/ft²
- BPL_263_Pacific Branch Library· 15,758 sq ft · EUI 94.3 kBtu/ft²
- QPL_4722_Broadway Community Library· 15,700 sq ft · EUI 43.4 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_4644_Grand Concourse Branch Library's energy grade?
NYPL_4644_Grand Concourse Branch Library did not report an ENERGY STAR score in its 2024 disclosure, but its site energy-use intensity was 121.5 kBtu/ft².
How much energy does NYPL_4644_Grand Concourse Branch Library use?
Its 2024 site energy-use intensity was 121.5 kBtu/ft² (213.2 kBtu/ft² source) across 16,874 sq ft, including 241,752 kWh of electricity and 12,259 therms of natural gas.
What are NYPL_4644_Grand Concourse Branch Library's carbon emissions?
NYPL_4644_Grand Concourse Branch Library reported 160 tCO₂e of greenhouse-gas emissions (9.5 kgCO₂e/ft²) for 2024.
Where is NYPL_4644_Grand Concourse Branch Library?
NYPL_4644_Grand Concourse Branch Library is at 155 East 173rd St, in New York City, New York 10457. Its coordinates are 40.84382, -73.91018 (latitude, longitude), as published in the Energy and Water Data Disclosure file.
How big is NYPL_4644_Grand Concourse Branch Library and when was it built?
NYPL_4644_Grand Concourse Branch Library has 16,874 sq ft of gross floor area, as reported in its 2024 disclosure. The disclosure lists 1959 as its year built. It is classed as library.
Is NYPL_4644_Grand Concourse 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_4644_Grand Concourse Branch Library, New York City, New York — 2024 benchmarking disclosure”, https://buildingcensus.com/buildings/new-york-city/nypl-4644-grand-concourse-branch-library-32e23ff0 (data as of October 2, 2026).