KM 1200 Union Ave/1204 Union Ave
Multifamily Housing in New York City, NY · 1200 Union Ave/1204 Union Ave · 10459
At a glance
KM 1200 Union Ave/1204 Union Ave is a 37,672-square-foot multifamily housing building in New York City, New York, built in 1922. In its 2024 New York City benchmarking disclosure it reported an ENERGY STAR score of 16 out of 100 (grade D), a site energy-use intensity of 114.2 kBtu/ft² and 283 tCO₂e of greenhouse-gas emissions. That score is higher than 10% 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 | 16 (band D) |
| Site EUI | 114.2 kBtu/ft² |
| Source EUI | 160.5 kBtu/ft² |
| GHG emissions | 283 tCO₂e |
| GHG intensity | 7.5 kgCO₂e/ft² |
| Electricity | 256,335 kWh |
| Natural gas | 34,276 therms |
| Water use | 2,905 kgal |
| Gross floor area | 37,672 sq ft |
| Source record | nyc:15327445:2024 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2024latest | 16 | -7 | 114.2 kBtu/ft² | 283 tCO₂e |
| 2023 | 23 | -10 | 103.1 kBtu/ft² | 252 tCO₂e |
| 2022 | 33 | 100.3 kBtu/ft² | 227 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
- 1200 Union Ave/1204 Union Ave
- City
- New York City
- State
- New York
- ZIP
- 10459
Within ~1 km
Nearby benchmarked buildings
This source publishes no coordinates, so nearby buildings can't be resolved yet.
See also: most efficient in New York City · biggest emitters
How does KM 1200 Union Ave/1204 Union Ave 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. KM 1200 Union Ave/1204 Union Ave's ENERGY STAR score of 16 compares with an average of 63 across the 22,829 that report a score; it scores higher than 10% of them and lower than 90%. Its site EUI of 114.2 kBtu/ft² is about 52% 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 7.5 kgCO₂e/ft² is about 44% above the group average of 5.2 kgCO₂e/ft².
At 37,672 sq ft, it is about 63% below the average floor area of 100,951 sq ft for those buildings. It was built in 1922, 30 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 KM 1200 Union Ave/1204 Union Ave's energy performance changed over time?
BuildingCensus holds 3 New York City disclosures for KM 1200 Union Ave/1204 Union Ave, covering report years 2022–2024. Its ENERGY STAR score went from 33 in 2022 to 16 in 2024 (-17 points); its best year on file was 2022, at 33. Site EUI moved from 100.3 kBtu/ft² (2022) to 114.2 kBtu/ft² (2024), an 14% increase. Reported emissions went from 227 tCO₂e to 283 tCO₂e over the same span (up 24%).
What does an ENERGY STAR score of 16 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 16 means the building performs better than about 16% of its national peers. BuildingCensus bands the score into report-card grades; 16 falls in band D — lowest band (1–54). It sits 59 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. KM 1200 Union Ave/1204 Union Ave's 114.2 kBtu/ft² across 37,672 sq ft works out to about 4.3 billion Btu (1,261 MWh-equivalent) in 2024. Its source EUI of 160.5 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 256,335 kWh of electricity, 34,276 therms of natural gas and 2,905 thousand gallons of water for the year.
Which law requires KM 1200 Union Ave/1204 Union Ave to report its energy use?
KM 1200 Union Ave/1204 Union Ave 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:15327445:2024). 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
- Gilman: 575 Herkimer St· 37,664 sq ft · score 71 (B)
- Lions: 99-39 66th Ave.· 37,658 sq ft
- 1917 Adam Clayton Powell Boulevard· 37,657 sq ft · score 1 (D)
- Monarch - 531 West 159th Street· 37,651 sq ft · score 97 (A)
- Residential Industries II· 37,651 sq ft · score 98 (A)
- Parson Plaza Owners Corp· 37,650 sq ft · score 72 (B)
- 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 KM 1200 Union Ave/1204 Union Ave's energy grade?
KM 1200 Union Ave/1204 Union Ave scores 16 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 KM 1200 Union Ave/1204 Union Ave use?
Its 2024 site energy-use intensity was 114.2 kBtu/ft² (160.5 kBtu/ft² source) across 37,672 sq ft, including 256,335 kWh of electricity and 34,276 therms of natural gas.
What are KM 1200 Union Ave/1204 Union Ave's carbon emissions?
KM 1200 Union Ave/1204 Union Ave reported 283 tCO₂e of greenhouse-gas emissions (7.5 kgCO₂e/ft²) for 2024.
Where is KM 1200 Union Ave/1204 Union Ave?
KM 1200 Union Ave/1204 Union Ave is in New York City, New York 10459.
How big is KM 1200 Union Ave/1204 Union Ave and when was it built?
KM 1200 Union Ave/1204 Union Ave has 37,672 sq ft of gross floor area, as reported in its 2024 disclosure. The disclosure lists 1922 as its year built. It is classed as multifamily housing.
Is KM 1200 Union Ave/1204 Union Ave 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, “KM 1200 Union Ave/1204 Union Ave, New York City, New York — 2024 benchmarking disclosure”, https://buildingcensus.com/buildings/new-york-city/km-1200-union-ave-1204-union-ave-f6e2cbf1 (data as of October 2, 2026).