503 UNION AVENUE
Multifamily Housing in New York City, NY · 503 UNION AVE · 11211
At a glance
503 UNION AVENUE is a 22,873-square-foot multifamily housing building in New York City, New York, built in 1930. In its 2022 New York City benchmarking disclosure it reported an ENERGY STAR score of 11 out of 100 (grade D), a site energy-use intensity of 89.2 kBtu/ft² and 167 tCO₂e of greenhouse-gas emissions. That score is higher than 8% of the 22,829 scored multifamily housing buildings in New York City.
Local Law 84 (LL84) · reporting year 2022
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | 11 (band D) |
| Site EUI | 89.2 kBtu/ft² |
| Source EUI | 237.4 kBtu/ft² |
| GHG emissions | 167 tCO₂e |
| GHG intensity | 7.3 kgCO₂e/ft² |
| Electricity | 550,838 kWh |
| Water use | 587 kgal |
| Gross floor area | 22,873 sq ft |
| Source record | nyc:21897650:2022 |
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
- 503 UNION AVE
- City
- New York City
- State
- New York
- ZIP
- 11211
- Coordinates
- 40.71567, -73.95189
Within ~1 km
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See also: most efficient in New York City · biggest emitters
How does 503 UNION AVENUE 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. 503 UNION AVENUE's ENERGY STAR score of 11 compares with an average of 63 across the 22,829 that report a score; it scores higher than 8% of them and lower than 92%. Its site EUI of 89.2 kBtu/ft² is about 19% 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 7.3 kgCO₂e/ft² is about 40% above the group average of 5.2 kgCO₂e/ft².
At 22,873 sq ft, it is about 77% below the average floor area of 100,951 sq ft for those buildings. It was built in 1930, 22 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.
What does an ENERGY STAR score of 11 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 11 means the building performs better than about 11% of its national peers. BuildingCensus bands the score into report-card grades; 11 falls in band D — lowest band (1–54). It sits 64 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. 503 UNION AVENUE's 89.2 kBtu/ft² across 22,873 sq ft works out to about 2 billion Btu (598 MWh-equivalent) in 2022. Its source EUI of 237.4 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 550,838 kWh of electricity and 587 thousand gallons of water for the year.
Which law requires 503 UNION AVENUE to report its energy use?
503 UNION AVENUE 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 2022 disclosure (source record nyc:21897650:2022). 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
- Century - 1080 Lorimer Street / 807 Manhattan Avenue· 22,859 sq ft · score 5 (D)
- 842 OCEAN PARKWAY· 22,840 sq ft
- 842 OCEAN PARKWAY· 22,840 sq ft · EUI 49.1 kBtu/ft²
- Wavecrest CHILD - 139 Emerson Place· 22,835 sq ft · score 1 (D)
- Wavecrest CHILD - 143 Rear Emerson Place· 22,835 sq ft
- 76 ST JAMES PLACE· 22,788 sq ft
- 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 503 UNION AVENUE's energy grade?
503 UNION AVENUE scores 11 out of 100 on ENERGY STAR — band D, lowest band (1–54) — in its 2022 New York City disclosure. Scores are national percentiles against similar buildings; 75+ qualifies for ENERGY STAR certification.
How much energy does 503 UNION AVENUE use?
Its 2022 site energy-use intensity was 89.2 kBtu/ft² (237.4 kBtu/ft² source) across 22,873 sq ft, including 550,838 kWh of electricity.
What are 503 UNION AVENUE's carbon emissions?
503 UNION AVENUE reported 167 tCO₂e of greenhouse-gas emissions (7.3 kgCO₂e/ft²) for 2022.
Where is 503 UNION AVENUE?
503 UNION AVENUE is in New York City, New York 11211. Its coordinates are 40.71567, -73.95189 (latitude, longitude), as published in the Energy and Water Data Disclosure file.
How big is 503 UNION AVENUE and when was it built?
503 UNION AVENUE has 22,873 sq ft of gross floor area, as reported in its 2022 disclosure. The disclosure lists 1930 as its year built. It is classed as multifamily housing.
Is 503 UNION AVENUE covered by Local Law 84 (LL84)?
Yes — it appears in the 2022 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, “503 UNION AVENUE, New York City, New York — 2022 benchmarking disclosure”, https://buildingcensus.com/buildings/new-york-city/503-union-avenue-4a0645ff (data as of October 2, 2026).