143 East 34th Street
Multifamily Housing in New York City, NY · 10016
At a glance
143 East 34th Street is a 33,585-square-foot multifamily housing building in New York City, New York, built in 2002. In its 2023 New York City benchmarking disclosure it reported an ENERGY STAR score of 35 out of 100 (grade D), a site energy-use intensity of 75.0 kBtu/ft² and 186 tCO₂e of greenhouse-gas emissions. That score is higher than 20% of the 22,829 scored multifamily housing buildings in New York City.
Local Law 84 (LL84) · reporting year 2023
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | 35 (band D) |
| Site EUI | 75.0 kBtu/ft² |
| Source EUI | 127.2 kBtu/ft² |
| GHG emissions | 186 tCO₂e |
| GHG intensity | 5.5 kgCO₂e/ft² |
| Electricity | 272,495 kWh |
| Natural gas | 15,907 therms |
| Gross floor area | 33,585 sq ft |
| Source record | nyc:8689291:2023 |
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
- 143 East 34th Street
- City
- New York City
- State
- New York
- ZIP
- 10016
- Coordinates
- 40.74625, -73.97934
Within ~1 km
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See also: most efficient in New York City · biggest emitters
How does 143 East 34th 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. 143 East 34th Street's ENERGY STAR score of 35 compares with an average of 63 across the 22,829 that report a score; it scores higher than 20% of them and lower than 79%. Its site EUI of 75.0 kBtu/ft² is roughly in line with the average of 74.9 kBtu/ft². Its emissions intensity of 5.5 kgCO₂e/ft² is roughly in line with the group average of 5.2 kgCO₂e/ft².
At 33,585 sq ft, it is about 67% below the average floor area of 100,951 sq ft for those buildings. It was built in 2002, 50 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.
What does an ENERGY STAR score of 35 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 35 means the building performs better than about 35% of its national peers. BuildingCensus bands the score into report-card grades; 35 falls in band D — lowest band (1–54). It sits 40 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. 143 East 34th Street's 75.0 kBtu/ft² across 33,585 sq ft works out to about 2.5 billion Btu (738 MWh-equivalent) in 2023. Its source EUI of 127.2 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 272,495 kWh of electricity and 15,907 therms of natural gas for the year.
Which law requires 143 East 34th Street to report its energy use?
143 East 34th 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 2023 disclosure (source record nyc:8689291:2023). 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
- 600 E 141st St· 33,580 sq ft · score 18 (D)
- 330 E. 83rd St. Realty Corp. (330 E 83rd St)· 33,580 sq ft · score 27 (D)
- Southern: 774 Fox Street· 33,576 sq ft · score 1 (D)
- 34 Crooke Avenue· 33,574 sq ft · score 53 (D)
- Leor: 2409 Creston Avenue· 33,571 sq ft · score 44 (D)
- The 37 South 10 Condominium· 33,565 sq ft · score 93 (A)
- 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 143 East 34th Street's energy grade?
143 East 34th Street scores 35 out of 100 on ENERGY STAR — band D, lowest band (1–54) — in its 2023 New York City disclosure. Scores are national percentiles against similar buildings; 75+ qualifies for ENERGY STAR certification.
How much energy does 143 East 34th Street use?
Its 2023 site energy-use intensity was 75.0 kBtu/ft² (127.2 kBtu/ft² source) across 33,585 sq ft, including 272,495 kWh of electricity and 15,907 therms of natural gas.
What are 143 East 34th Street's carbon emissions?
143 East 34th Street reported 186 tCO₂e of greenhouse-gas emissions (5.5 kgCO₂e/ft²) for 2023.
Where is 143 East 34th Street?
143 East 34th Street is in New York City, New York 10016. Its coordinates are 40.74625, -73.97934 (latitude, longitude), as published in the Energy and Water Data Disclosure file.
How big is 143 East 34th Street and when was it built?
143 East 34th Street has 33,585 sq ft of gross floor area, as reported in its 2023 disclosure. The disclosure lists 2002 as its year built. It is classed as multifamily housing.
Is 143 East 34th Street covered by Local Law 84 (LL84)?
Yes — it appears in the 2023 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, “143 East 34th Street, New York City, New York — 2023 benchmarking disclosure”, https://buildingcensus.com/buildings/new-york-city/143-east-34th-street-f0b51b27 (data as of October 2, 2026).