First Zone: 42-42 Union St
Multifamily Housing in New York City, NY · 42-42 Union St · 11355
At a glance
First Zone: 42-42 Union St is a 42,295-square-foot multifamily housing building in New York City, New York, built in 1986. In its 2024 New York City benchmarking disclosure it reported an ENERGY STAR score of 81 out of 100 (grade B), a site energy-use intensity of 34.7 kBtu/ft² and 153 tCO₂e of greenhouse-gas emissions. That score is higher than 64% 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 | 81 (band B) |
| Site EUI | 34.7 kBtu/ft² |
| Source EUI | 86.3 kBtu/ft² |
| GHG emissions | 153 tCO₂e |
| GHG intensity | 3.6 kgCO₂e/ft² |
| Electricity | 353,168 kWh |
| Natural gas | 2,613 therms |
| Gross floor area | 42,295 sq ft |
| Source record | nyc:6282632:2024 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2024latest | 81 | +3 | 34.7 kBtu/ft² | 153 tCO₂e |
| 2023 | 78 | +9 | 34.7 kBtu/ft² | 145 tCO₂e |
| 2022 | 69 | 39.2 kBtu/ft² | 132 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 Union St
- City
- New York City
- State
- New York
- ZIP
- 11355
- Coordinates
- 40.75702, -73.82444
Within ~1 km
Nearby benchmarked buildings
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- AAR: 41-40 Union Streetscore 67
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- 43-23 Colden St - 33608score 42
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- 43-70 Kissena Blvd - 33609score 36
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See also: most efficient in New York City · biggest emitters
How does First Zone: 42-42 Union St 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. First Zone: 42-42 Union St's ENERGY STAR score of 81 compares with an average of 63 across the 22,829 that report a score; it scores higher than 64% of them and lower than 34%. Its site EUI of 34.7 kBtu/ft² is about half of 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 3.6 kgCO₂e/ft² is about 31% below the group average of 5.2 kgCO₂e/ft².
At 42,295 sq ft, it is about 58% below the average floor area of 100,951 sq ft for those buildings. It was built in 1986, 34 years later 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 First Zone: 42-42 Union St's energy performance changed over time?
BuildingCensus holds 3 New York City disclosures for First Zone: 42-42 Union St, covering report years 2022–2024. Its ENERGY STAR score went from 69 in 2022 to 81 in 2024 (+12 points). Site EUI moved from 39.2 kBtu/ft² (2022) to 34.7 kBtu/ft² (2024), a 11% decrease. Reported emissions went from 132 tCO₂e to 153 tCO₂e over the same span (up 15%).
What does an ENERGY STAR score of 81 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 81 means the building performs better than about 81% of its national peers. BuildingCensus bands the score into report-card grades; 81 falls in band B — above median (70–84). Scores of 75 or higher meet the threshold for ENERGY STAR certification; certification itself is a separate, verified application that the disclosure does not record. 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. First Zone: 42-42 Union St's 34.7 kBtu/ft² across 42,295 sq ft works out to about 1.5 billion Btu (430 MWh-equivalent) in 2024. Its source EUI of 86.3 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 353,168 kWh of electricity and 2,613 therms of natural gas for the year.
Which law requires First Zone: 42-42 Union St to report its energy use?
First Zone: 42-42 Union St 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:6282632:2024). 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
- 4254 Carpenter Avenue· 42,294 sq ft · score 34 (D)
- AKAM - 759 President Street· 42,289 sq ft · score 45 (D)
- 1487 Nostrand Avenue· 42,288 sq ft · score 48 (D)
- 515 East 88th Street· 42,286 sq ft · score 76 (B)
- 334 EASTERN PKWY.· 42,285 sq ft · score 53 (D)
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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 First Zone: 42-42 Union St's energy grade?
First Zone: 42-42 Union St scores 81 out of 100 on ENERGY STAR — band B, above median (70–84) — in its 2024 New York City disclosure. Scores are national percentiles against similar buildings; 75+ qualifies for ENERGY STAR certification.
How much energy does First Zone: 42-42 Union St use?
Its 2024 site energy-use intensity was 34.7 kBtu/ft² (86.3 kBtu/ft² source) across 42,295 sq ft, including 353,168 kWh of electricity and 2,613 therms of natural gas.
What are First Zone: 42-42 Union St's carbon emissions?
First Zone: 42-42 Union St reported 153 tCO₂e of greenhouse-gas emissions (3.6 kgCO₂e/ft²) for 2024.
Where is First Zone: 42-42 Union St?
First Zone: 42-42 Union St is in New York City, New York 11355. Its coordinates are 40.75702, -73.82444 (latitude, longitude), as published in the Energy and Water Data Disclosure file.
How big is First Zone: 42-42 Union St and when was it built?
First Zone: 42-42 Union St has 42,295 sq ft of gross floor area, as reported in its 2024 disclosure. The disclosure lists 1986 as its year built. It is classed as multifamily housing.
Is First Zone: 42-42 Union St 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, “First Zone: 42-42 Union St, New York City, New York — 2024 benchmarking disclosure”, https://buildingcensus.com/buildings/new-york-city/first-zone-42-42-union-st-4fa1c13c (data as of October 2, 2026).