42-42 Ithaca Street
Multifamily Housing in New York City, NY · 11373
At a glance
42-42 Ithaca Street is a 49,638-square-foot multifamily housing building in New York City, New York, built in 1940. In its 2024 New York City benchmarking disclosure it reported an ENERGY STAR score of 64 out of 100 (grade C), a site energy-use intensity of 78.2 kBtu/ft² and 248 tCO₂e of greenhouse-gas emissions. That score is higher than 44% of the 22,829 scored multifamily housing buildings in New York City.
Local Law 84 (LL84) · reporting year 2024
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | 64 (band C) |
| Site EUI | 78.2 kBtu/ft² |
| Source EUI | 105.7 kBtu/ft² |
| GHG emissions | 248 tCO₂e |
| GHG intensity | 5.0 kgCO₂e/ft² |
| Electricity | 195,818 kWh |
| Natural gas | 32,137 therms |
| Water use | 3,378 kgal |
| Gross floor area | 49,638 sq ft |
| Source record | nyc:6388062:2024 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2024latest | 64 | +10 | 78.2 kBtu/ft² | 248 tCO₂e |
| 2023 | 54 | +15 | 83.2 kBtu/ft² | 256 tCO₂e |
| 2022 | 39 | 101.7 kBtu/ft² | 289 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
- 42-42 Ithaca Street
- City
- New York City
- State
- New York
- ZIP
- 11373
- Coordinates
- 40.74404, -73.87808
Within ~1 km
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See also: most efficient in New York City · biggest emitters
How does 42-42 Ithaca Street 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. 42-42 Ithaca Street's ENERGY STAR score of 64 compares with an average of 63 across the 22,829 that report a score; it scores higher than 44% of them and lower than 55%. Its site EUI of 78.2 kBtu/ft² is roughly in line with the average of 74.9 kBtu/ft². Its emissions intensity of 5.0 kgCO₂e/ft² is roughly in line with the group average of 5.2 kgCO₂e/ft².
At 49,638 sq ft, it is about half of the average floor area of 100,951 sq ft for those buildings. It was built in 1940, 12 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 42-42 Ithaca Street's energy performance changed over time?
BuildingCensus holds 3 New York City disclosures for 42-42 Ithaca Street, covering report years 2022–2024. Its ENERGY STAR score went from 39 in 2022 to 64 in 2024 (+25 points). Site EUI moved from 101.7 kBtu/ft² (2022) to 78.2 kBtu/ft² (2024), a 23% decrease. Reported emissions went from 289 tCO₂e to 248 tCO₂e over the same span (down 14%).
What does an ENERGY STAR score of 64 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 64 means the building performs better than about 64% of its national peers. BuildingCensus bands the score into report-card grades; 64 falls in band C — below median (55–69). It sits 11 points below 75, the threshold for ENERGY STAR certification. 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. 42-42 Ithaca Street's 78.2 kBtu/ft² across 49,638 sq ft works out to about 3.9 billion Btu (1,138 MWh-equivalent) in 2024. Its source EUI of 105.7 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 195,818 kWh of electricity, 32,137 therms of natural gas and 3,378 thousand gallons of water for the year.
Which law requires 42-42 Ithaca Street to report its energy use?
42-42 Ithaca Street 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:6388062:2024). 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
- 689 - 41 Kew Gardens Rd· 49,636 sq ft · score 37 (D)
- 133 MULBERRY STREET· 49,633 sq ft · EUI 47.2 kBtu/ft²
- 133 Mulberry Street· 49,633 sq ft · EUI 46.0 kBtu/ft²
- 125 Kings HWY· 49,628 sq ft · score 45 (D)
- 2760 Jerome Ave· 49,627 sq ft · score 100 (A)
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- 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 42-42 Ithaca Street's energy grade?
42-42 Ithaca Street scores 64 out of 100 on ENERGY STAR — band C, below median (55–69) — in its 2024 New York City disclosure. Scores are national percentiles against similar buildings; 75+ qualifies for ENERGY STAR certification.
How much energy does 42-42 Ithaca Street use?
Its 2024 site energy-use intensity was 78.2 kBtu/ft² (105.7 kBtu/ft² source) across 49,638 sq ft, including 195,818 kWh of electricity and 32,137 therms of natural gas.
What are 42-42 Ithaca Street's carbon emissions?
42-42 Ithaca Street reported 248 tCO₂e of greenhouse-gas emissions (5.0 kgCO₂e/ft²) for 2024.
Where is 42-42 Ithaca Street?
42-42 Ithaca Street is in New York City, New York 11373. Its coordinates are 40.74404, -73.87808 (latitude, longitude), as published in the Energy and Water Data Disclosure file.
How big is 42-42 Ithaca Street and when was it built?
42-42 Ithaca Street has 49,638 sq ft of gross floor area, as reported in its 2024 disclosure. The disclosure lists 1940 as its year built. It is classed as multifamily housing.
Is 42-42 Ithaca Street 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, “42-42 Ithaca Street, New York City, New York — 2024 benchmarking disclosure”, https://buildingcensus.com/buildings/new-york-city/42-42-ithaca-street-9e3bfa08 (data as of October 2, 2026).