50 Norfolk Street
Multifamily Housing in New York City, NY · 10002
At a glance
50 Norfolk Street is a 137,909-square-foot multifamily housing building in New York City, New York, built in 1982. In its 2024 New York City benchmarking disclosure it reported an ENERGY STAR score of 77 out of 100 (grade B), a site energy-use intensity of 74.5 kBtu/ft² and 834 tCO₂e of greenhouse-gas emissions. That score is higher than 60% 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 | 77 (band B) |
| Site EUI | 74.5 kBtu/ft² |
| Source EUI | 98.0 kBtu/ft² |
| GHG emissions | 834 tCO₂e |
| GHG intensity | 6.0 kgCO₂e/ft² |
| Electricity | 513,294 kWh |
| Natural gas | 0 therms |
| Water use | 8,682 kgal |
| Gross floor area | 137,909 sq ft |
| Source record | nyc:25745717:2024 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2024latest | 77 | -3 | 74.5 kBtu/ft² | 834 tCO₂e |
| 2023 | 80 | +36 | 70.9 kBtu/ft² | 785 tCO₂e |
| 2022 | 44 | 85.0 kBtu/ft² | 906 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
- 50 Norfolk Street
- City
- New York City
- State
- New York
- ZIP
- 10002
- Coordinates
- 40.71702, -73.98806
Within ~1 km
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See also: most efficient in New York City · biggest emitters
How does 50 Norfolk 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. 50 Norfolk Street's ENERGY STAR score of 77 compares with an average of 63 across the 22,829 that report a score; it scores higher than 60% of them and lower than 39%. Its site EUI of 74.5 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 6.0 kgCO₂e/ft² is about 16% above the group average of 5.2 kgCO₂e/ft².
At 137,909 sq ft, it is about 37% above the average floor area of 100,951 sq ft for those buildings. It was built in 1982, 30 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 50 Norfolk Street's energy performance changed over time?
BuildingCensus holds 3 New York City disclosures for 50 Norfolk Street, covering report years 2022–2024. Its ENERGY STAR score went from 44 in 2022 to 77 in 2024 (+33 points); its best year on file was 2023, at 80. Site EUI moved from 85.0 kBtu/ft² (2022) to 74.5 kBtu/ft² (2024), a 12% decrease. Reported emissions went from 906 tCO₂e to 834 tCO₂e over the same span (down 8%).
What does an ENERGY STAR score of 77 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 77 means the building performs better than about 77% of its national peers. BuildingCensus bands the score into report-card grades; 77 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. 50 Norfolk Street's 74.5 kBtu/ft² across 137,909 sq ft works out to about 10.3 billion Btu (3,011 MWh-equivalent) in 2024. Its source EUI of 98.0 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 513,294 kWh of electricity, 0 therms of natural gas and 8,682 thousand gallons of water for the year.
Which law requires 50 Norfolk Street to report its energy use?
50 Norfolk 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:25745717:2024). 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
- IVORY 1150 CONCOURSEC/1150 grand concourse· 137,900 sq ft · score 77 (B)
- Indus - 22-30/22-40 Mott Ave· 137,820 sq ft · score 56 (C)
- 96 New Lots Ave· 137,807 sq ft · score 100 (A)
- Borinquen Court· 137,800 sq ft · score 64 (C)
- Hampton Court Owners Corp (117-01B Park Lane South)· 137,780 sq ft · score 76 (B)
- Hampton Court Owners Corp (117-01A Park Lane South)· 137,780 sq ft · score 1 (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 50 Norfolk Street's energy grade?
50 Norfolk Street scores 77 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 50 Norfolk Street use?
Its 2024 site energy-use intensity was 74.5 kBtu/ft² (98.0 kBtu/ft² source) across 137,909 sq ft, including 513,294 kWh of electricity and 0 therms of natural gas.
What are 50 Norfolk Street's carbon emissions?
50 Norfolk Street reported 834 tCO₂e of greenhouse-gas emissions (6.0 kgCO₂e/ft²) for 2024.
Where is 50 Norfolk Street?
50 Norfolk Street is in New York City, New York 10002. Its coordinates are 40.71702, -73.98806 (latitude, longitude), as published in the Energy and Water Data Disclosure file.
How big is 50 Norfolk Street and when was it built?
50 Norfolk Street has 137,909 sq ft of gross floor area, as reported in its 2024 disclosure. The disclosure lists 1982 as its year built. It is classed as multifamily housing.
Is 50 Norfolk 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, “50 Norfolk Street, New York City, New York — 2024 benchmarking disclosure”, https://buildingcensus.com/buildings/new-york-city/50-norfolk-street-43af63eb (data as of October 2, 2026).