1721 Hobart Avenue
Multifamily Housing in New York City, NY · 10461
At a glance
1721 Hobart Avenue is a 25,412-square-foot multifamily housing building in New York City, New York, built in 1928. In its 2024 New York City benchmarking disclosure it reported an ENERGY STAR score of 25 out of 100 (grade D), a site energy-use intensity of 108.4 kBtu/ft² and 166 tCO₂e of greenhouse-gas emissions. That score is higher than 15% 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 | 25 (band D) |
| Site EUI | 108.4 kBtu/ft² |
| Source EUI | 135.5 kBtu/ft² |
| GHG emissions | 166 tCO₂e |
| GHG intensity | 6.5 kgCO₂e/ft² |
| Electricity | 91,894 kWh |
| Natural gas | 24,423 therms |
| Water use | 2,275 kgal |
| Gross floor area | 25,412 sq ft |
| Source record | nyc:6436031:2024 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2024latest | 25 | +22 | 108.4 kBtu/ft² | 166 tCO₂e |
| 2023 | 3 | -18 | 152.1 kBtu/ft² | 223 tCO₂e |
| 2022 | 21 | 122.5 kBtu/ft² | 175 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
- 1721 Hobart Avenue
- City
- New York City
- State
- New York
- ZIP
- 10461
- Coordinates
- 40.84613, -73.83059
Within ~1 km
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- Century - 1720 Mayflower Avenuescore 70
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See also: most efficient in New York City · biggest emitters
How does 1721 Hobart 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. 1721 Hobart Avenue's ENERGY STAR score of 25 compares with an average of 63 across the 22,829 that report a score; it scores higher than 15% of them and lower than 85%. Its site EUI of 108.4 kBtu/ft² is about 45% 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 6.5 kgCO₂e/ft² is about 25% above the group average of 5.2 kgCO₂e/ft².
At 25,412 sq ft, it is about 75% below the average floor area of 100,951 sq ft for those buildings. It was built in 1928, 24 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 1721 Hobart Avenue's energy performance changed over time?
BuildingCensus holds 3 New York City disclosures for 1721 Hobart Avenue, covering report years 2022–2024. Its ENERGY STAR score went from 21 in 2022 to 25 in 2024 (+4 points). Site EUI moved from 122.5 kBtu/ft² (2022) to 108.4 kBtu/ft² (2024), a 12% decrease. Reported emissions went from 175 tCO₂e to 166 tCO₂e over the same span (down 5%).
What does an ENERGY STAR score of 25 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 25 means the building performs better than about 25% of its national peers. BuildingCensus bands the score into report-card grades; 25 falls in band D — lowest band (1–54). It sits 50 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. 1721 Hobart Avenue's 108.4 kBtu/ft² across 25,412 sq ft works out to about 2.8 billion Btu (807 MWh-equivalent) in 2024. Its source EUI of 135.5 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 91,894 kWh of electricity, 24,423 therms of natural gas and 2,275 thousand gallons of water for the year.
Which law requires 1721 Hobart Avenue to report its energy use?
1721 Hobart 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 2024 disclosure (source record nyc:6436031:2024). 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
- 2118 78 Street· 25,410 sq ft · EUI 52.3 kBtu/ft²
- 227 East 59th St· 25,410 sq ft · score 84 (B)
- 21-35 77 Street· 25,410 sq ft · EUI 56.3 kBtu/ft²
- 985 Ocean Ave LLC· 25,410 sq ft · score 78 (B)
- 21-21 77 Street· 25,410 sq ft · EUI 56.7 kBtu/ft²
- 650 West 173rd Street· 25,410 sq ft · score 51 (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 1721 Hobart Avenue's energy grade?
1721 Hobart Avenue scores 25 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 1721 Hobart Avenue use?
Its 2024 site energy-use intensity was 108.4 kBtu/ft² (135.5 kBtu/ft² source) across 25,412 sq ft, including 91,894 kWh of electricity and 24,423 therms of natural gas.
What are 1721 Hobart Avenue's carbon emissions?
1721 Hobart Avenue reported 166 tCO₂e of greenhouse-gas emissions (6.5 kgCO₂e/ft²) for 2024.
Where is 1721 Hobart Avenue?
1721 Hobart Avenue is in New York City, New York 10461. Its coordinates are 40.84613, -73.83059 (latitude, longitude), as published in the Energy and Water Data Disclosure file.
How big is 1721 Hobart Avenue and when was it built?
1721 Hobart Avenue has 25,412 sq ft of gross floor area, as reported in its 2024 disclosure. The disclosure lists 1928 as its year built. It is classed as multifamily housing.
Is 1721 Hobart Avenue 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, “1721 Hobart Avenue, New York City, New York — 2024 benchmarking disclosure”, https://buildingcensus.com/buildings/new-york-city/1721-hobart-avenue-32daf2b2 (data as of October 2, 2026).