42-37 Union Street
Multifamily Housing in New York City, NY · 11355
At a glance
42-37 Union Street is a 49,925-square-foot multifamily housing building in New York City, New York, built in 1926. In its 2024 New York City benchmarking disclosure it reported an ENERGY STAR score of 3 out of 100 (grade D), a site energy-use intensity of 139.3 kBtu/ft² and 399 tCO₂e of greenhouse-gas emissions. That score is higher than 3% 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 | 3 (band D) |
| Site EUI | 139.3 kBtu/ft² |
| Source EUI | 162.8 kBtu/ft² |
| GHG emissions | 399 tCO₂e |
| GHG intensity | 8.0 kgCO₂e/ft² |
| Electricity | 138,950 kWh |
| Natural gas | 64,783 therms |
| Water use | 4,513 kgal |
| Gross floor area | 49,925 sq ft |
| Source record | nyc:6388497:2024 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2024latest | 3 | -2 | 139.3 kBtu/ft² | 399 tCO₂e |
| 2023 | 5 | +2 | 125.7 kBtu/ft² | 360 tCO₂e |
| 2022 | 3 | 145.9 kBtu/ft² | 403 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
- 42-37 Union Street
- City
- New York City
- State
- New York
- ZIP
- 11355
- Coordinates
- 40.75709, -73.82450
Within ~1 km
Nearby benchmarked buildings
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- AAR: 41-40 Union Streetscore 67
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See also: most efficient in New York City · biggest emitters
How does 42-37 Union 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. 42-37 Union Street's ENERGY STAR score of 3 compares with an average of 63 across the 22,829 that report a score; it scores higher than 3% of them and lower than 96%. Its site EUI of 139.3 kBtu/ft² is about 86% above the average of 74.9 kBtu/ft² — it uses more energy per square foot than the typical building in that group. Its emissions intensity of 8.0 kgCO₂e/ft² is about 54% above the group average of 5.2 kgCO₂e/ft².
At 49,925 sq ft, it is about half of the average floor area of 100,951 sq ft for those buildings. It was built in 1926, 26 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 42-37 Union Street's energy performance changed over time?
BuildingCensus holds 3 New York City disclosures for 42-37 Union Street, covering report years 2022–2024. Its ENERGY STAR score was 3 in both 2022 and 2024. Site EUI moved from 145.9 kBtu/ft² (2022) to 139.3 kBtu/ft² (2024), a 5% decrease. Reported emissions went from 403 tCO₂e to 399 tCO₂e over the same span (down 1%).
What does an ENERGY STAR score of 3 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 3 means the building performs better than about 3% of its national peers. BuildingCensus bands the score into report-card grades; 3 falls in band D — lowest band (1–54). It sits 72 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. 42-37 Union Street's 139.3 kBtu/ft² across 49,925 sq ft works out to about 7 billion Btu (2,038 MWh-equivalent) in 2024. Its source EUI of 162.8 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 138,950 kWh of electricity, 64,783 therms of natural gas and 4,513 thousand gallons of water for the year.
Which law requires 42-37 Union Street to report its energy use?
42-37 Union 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:6388497:2024). 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
- 745 Lincoln Place· 49,914 sq ft
- 235 E46· 49,914 sq ft · score 44 (D)
- Wavecrest - 1028 Bushwick Avenue· 49,913 sq ft · score 49 (D)
- 1028 Bushwick Avenue· 49,913 sq ft · score 27 (D)
- 150 East 37th St· 49,900 sq ft · score 69 (C)
- 2191 Creston Ave· 49,896 sq ft · score 5 (D)
- 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 42-37 Union Street's energy grade?
42-37 Union Street scores 3 out of 100 on ENERGY STAR — band D, lowest band (1–54) — in its 2024 New York City disclosure. Scores are national percentiles against similar buildings; 75+ qualifies for ENERGY STAR certification.
How much energy does 42-37 Union Street use?
Its 2024 site energy-use intensity was 139.3 kBtu/ft² (162.8 kBtu/ft² source) across 49,925 sq ft, including 138,950 kWh of electricity and 64,783 therms of natural gas.
What are 42-37 Union Street's carbon emissions?
42-37 Union Street reported 399 tCO₂e of greenhouse-gas emissions (8.0 kgCO₂e/ft²) for 2024.
Where is 42-37 Union Street?
42-37 Union Street is in New York City, New York 11355. Its coordinates are 40.75709, -73.82450 (latitude, longitude), as published in the Energy and Water Data Disclosure file.
How big is 42-37 Union Street and when was it built?
42-37 Union Street has 49,925 sq ft of gross floor area, as reported in its 2024 disclosure. The disclosure lists 1926 as its year built. It is classed as multifamily housing.
Is 42-37 Union 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, “42-37 Union Street, New York City, New York — 2024 benchmarking disclosure”, https://buildingcensus.com/buildings/new-york-city/42-37-union-street-e2a66381 (data as of October 2, 2026).