A01630 - The Isabella Condominium
Multifamily Housing in New York City, NY · 545 Washington Avenue · 11238
At a glance
A01630 - The Isabella Condominium is a 79,325-square-foot multifamily housing building at 545 Washington Avenue in New York City, New York, built in 2009. In its 2024 New York City benchmarking disclosure it reported an ENERGY STAR score of 32 out of 100 (grade D), a site energy-use intensity of 85.3 kBtu/ft² and 500 tCO₂e of greenhouse-gas emissions. That score is higher than 18% 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 | 32 (band D) |
| Site EUI | 85.3 kBtu/ft² |
| Source EUI | 139.6 kBtu/ft² |
| GHG emissions | 500 tCO₂e |
| GHG intensity | 6.3 kgCO₂e/ft² |
| Electricity | 664,966 kWh |
| Natural gas | 44,964 therms |
| Water use | 3,020 kgal |
| Gross floor area | 79,325 sq ft |
| Source record | nyc:6176805:2024 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2024latest | 32 | +2 | 85.3 kBtu/ft² | 500 tCO₂e |
| 2023 | 30 | -6 | 84.0 kBtu/ft² | 481 tCO₂e |
| 2022 | 36 | 85.8 kBtu/ft² | 437 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
- 545 Washington Avenue
- City
- New York City
- State
- New York
- ZIP
- 11238
- Coordinates
- 40.68187, -73.96453
Within ~1 km
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See also: most efficient in New York City · biggest emitters
How does A01630 - The Isabella Condominium 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. A01630 - The Isabella Condominium's ENERGY STAR score of 32 compares with an average of 63 across the 22,829 that report a score; it scores higher than 18% of them and lower than 81%. Its site EUI of 85.3 kBtu/ft² is about 14% 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 6.3 kgCO₂e/ft² is about 21% above the group average of 5.2 kgCO₂e/ft².
At 79,325 sq ft, it is about 21% below the average floor area of 100,951 sq ft for those buildings. It was built in 2009, 57 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 A01630 - The Isabella Condominium's energy performance changed over time?
BuildingCensus holds 3 New York City disclosures for A01630 - The Isabella Condominium, covering report years 2022–2024. Its ENERGY STAR score went from 36 in 2022 to 32 in 2024 (-4 points); its best year on file was 2022, at 36. Site EUI moved from 85.8 kBtu/ft² (2022) to 85.3 kBtu/ft² (2024), a 1% decrease. Reported emissions went from 437 tCO₂e to 500 tCO₂e over the same span (up 14%).
What does an ENERGY STAR score of 32 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 32 means the building performs better than about 32% of its national peers. BuildingCensus bands the score into report-card grades; 32 falls in band D — lowest band (1–54). It sits 43 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. A01630 - The Isabella Condominium's 85.3 kBtu/ft² across 79,325 sq ft works out to about 6.8 billion Btu (1,983 MWh-equivalent) in 2024. Its source EUI of 139.6 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 664,966 kWh of electricity, 44,964 therms of natural gas and 3,020 thousand gallons of water for the year.
Which law requires A01630 - The Isabella Condominium to report its energy use?
A01630 - The Isabella Condominium 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:6176805:2024). 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.
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- 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 A01630 - The Isabella Condominium's energy grade?
A01630 - The Isabella Condominium scores 32 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 A01630 - The Isabella Condominium use?
Its 2024 site energy-use intensity was 85.3 kBtu/ft² (139.6 kBtu/ft² source) across 79,325 sq ft, including 664,966 kWh of electricity and 44,964 therms of natural gas.
What are A01630 - The Isabella Condominium's carbon emissions?
A01630 - The Isabella Condominium reported 500 tCO₂e of greenhouse-gas emissions (6.3 kgCO₂e/ft²) for 2024.
Where is A01630 - The Isabella Condominium?
A01630 - The Isabella Condominium is at 545 Washington Avenue, in New York City, New York 11238. Its coordinates are 40.68187, -73.96453 (latitude, longitude), as published in the Energy and Water Data Disclosure file.
How big is A01630 - The Isabella Condominium and when was it built?
A01630 - The Isabella Condominium has 79,325 sq ft of gross floor area, as reported in its 2024 disclosure. The disclosure lists 2009 as its year built. It is classed as multifamily housing.
Is A01630 - The Isabella Condominium 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, “A01630 - The Isabella Condominium, New York City, New York — 2024 benchmarking disclosure”, https://buildingcensus.com/buildings/new-york-city/a01630-the-isabella-condominium-513eb771 (data as of October 2, 2026).