Inkwell
Multifamily Housing in New York City, NY · 520 West 45th Street · 10036
At a glance
Inkwell is a 36,240-square-foot multifamily housing building at 520 West 45th Street 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 68.3 kBtu/ft² and 195 tCO₂e of greenhouse-gas emissions.
Local Law 84 (LL84) · reporting year 2024
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | — |
| Site EUI | 68.3 kBtu/ft² |
| Source EUI | 121.6 kBtu/ft² |
| GHG emissions | 195 tCO₂e |
| GHG intensity | 5.4 kgCO₂e/ft² |
| Electricity | 303,061 kWh |
| Natural gas | 14,396 therms |
| Water use | 774 kgal |
| Gross floor area | 36,240 sq ft |
| Source record | nyc:15304423:2024 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2024latest | — | 68.3 kBtu/ft² | 195 tCO₂e | |
| 2023 | — | 50.2 kBtu/ft² | 150 tCO₂e | |
| 2022 | — | 60.1 kBtu/ft² | 137 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
- 520 West 45th Street
- City
- New York City
- State
- New York
- ZIP
- 10036
- Coordinates
- 40.76208, -73.99536
Within ~1 km
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See also: most efficient in New York City · biggest emitters
How does Inkwell compare with other multifamily housing buildings in New York City?
The latest disclosures cover 33,022 multifamily housing buildings in New York City, out of 48,310 buildings citywide. Its site EUI of 68.3 kBtu/ft² is roughly in line with the average of 74.9 kBtu/ft² — it uses less energy per square foot than the typical building in that group. Its emissions intensity of 5.4 kgCO₂e/ft² is roughly in line with the group average of 5.2 kgCO₂e/ft².
At 36,240 sq ft, it is about 64% below the average floor area of 100,951 sq ft for those buildings. It was built in 1905, 47 years earlier than the group's average year built (1952). Across all 24 jurisdictions BuildingCensus covers, the 59,945 multifamily housing buildings average an ENERGY STAR score of 70 and a site EUI of 59.0 kBtu/ft².
How has Inkwell's energy performance changed over time?
BuildingCensus holds 3 New York City disclosures for Inkwell, covering report years 2022–2024. Site EUI moved from 60.1 kBtu/ft² (2022) to 68.3 kBtu/ft² (2024), an 14% increase. Reported emissions went from 137 tCO₂e to 195 tCO₂e over the same span (up 43%).
What does a site EUI of 68.3 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. Inkwell's 68.3 kBtu/ft² across 36,240 sq ft works out to about 2.5 billion Btu (725 MWh-equivalent) in 2024. Its source EUI of 121.6 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 303,061 kWh of electricity, 14,396 therms of natural gas and 774 thousand gallons of water for the year.
Which law requires Inkwell to report its energy use?
Inkwell 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:15304423:2024). 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 multifamily housing buildings in New York City
- Carnegie Management: 462 Keap St· 36,217 sq ft · score 42 (D)
- 3010 Valentine Avenue· 36,216 sq ft · score 43 (D)
- DEPM 1872 - 560 West 24th Street· 36,216 sq ft · EUI 61.9 kBtu/ft²
- 2217 CATON AVE· 36,212 sq ft · score 90 (A)
- Prospect Management - 2217 Caton Ave,· 36,212 sq ft · score 89 (A)
- LNY - 549 Isham Street· 36,210 sq ft · score 68 (C)
- Multifamily Housing buildings in New York City· 33,022 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 Inkwell's energy grade?
Inkwell did not report an ENERGY STAR score in its 2024 disclosure, but its site energy-use intensity was 68.3 kBtu/ft².
How much energy does Inkwell use?
Its 2024 site energy-use intensity was 68.3 kBtu/ft² (121.6 kBtu/ft² source) across 36,240 sq ft, including 303,061 kWh of electricity and 14,396 therms of natural gas.
What are Inkwell's carbon emissions?
Inkwell reported 195 tCO₂e of greenhouse-gas emissions (5.4 kgCO₂e/ft²) for 2024.
Where is Inkwell?
Inkwell is at 520 West 45th Street, in New York City, New York 10036. Its coordinates are 40.76208, -73.99536 (latitude, longitude), as published in the Energy and Water Data Disclosure file.
How big is Inkwell and when was it built?
Inkwell has 36,240 sq ft of gross floor area, as reported in its 2024 disclosure. The disclosure lists 1905 as its year built. It is classed as multifamily housing.
Is Inkwell 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, “Inkwell, New York City, New York — 2024 benchmarking disclosure”, https://buildingcensus.com/buildings/new-york-city/inkwell-60721972 (data as of October 2, 2026).