Olympia House Delaware LP
Multifamily Housing in New York City, NY · 279 East 44th Street · 10017
At a glance
Olympia House Delaware LP is a 210,000-square-foot multifamily housing building at 279 East 44th Street in New York City, New York, built in 1960. In its 2024 New York City benchmarking disclosure it reported an ENERGY STAR score of 97 out of 100 (grade A), a site energy-use intensity of 25.8 kBtu/ft² and 574 tCO₂e of greenhouse-gas emissions. That score is higher than 86% 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 | 97 (band A) |
| Site EUI | 25.8 kBtu/ft² |
| Source EUI | 65.6 kBtu/ft² |
| GHG emissions | 574 tCO₂e |
| GHG intensity | 2.7 kgCO₂e/ft² |
| Electricity | 1,356,426 kWh |
| Natural gas | 7,861 therms |
| Water use | 9,597 kgal |
| Gross floor area | 210,000 sq ft |
| Source record | nyc:26585188:2024 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2024latest | 97 | +2 | 25.8 kBtu/ft² | 574 tCO₂e |
| 2023 | 95 | +13 | 27.8 kBtu/ft² | 579 tCO₂e |
| 2022 | 82 | 36.4 kBtu/ft² | 611 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
- 279 East 44th Street
- City
- New York City
- State
- New York
- ZIP
- 10017
- Coordinates
- 40.75140, -73.97192
Within ~1 km
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See also: most efficient in New York City · biggest emitters
How does Olympia House Delaware LP 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. Olympia House Delaware LP's ENERGY STAR score of 97 compares with an average of 63 across the 22,829 that report a score; it scores higher than 86% of them and lower than 13%. Its site EUI of 25.8 kBtu/ft² is about 66% below 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 2.7 kgCO₂e/ft² is about half of the group average of 5.2 kgCO₂e/ft².
At 210,000 sq ft, it is about twice the average floor area of 100,951 sq ft for those buildings. It was built in 1960, 8 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 Olympia House Delaware LP's energy performance changed over time?
BuildingCensus holds 3 New York City disclosures for Olympia House Delaware LP, covering report years 2022–2024. Its ENERGY STAR score went from 82 in 2022 to 97 in 2024 (+15 points). Site EUI moved from 36.4 kBtu/ft² (2022) to 25.8 kBtu/ft² (2024), a 29% decrease. Reported emissions went from 611 tCO₂e to 574 tCO₂e over the same span (down 6%).
What does an ENERGY STAR score of 97 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 97 means the building performs better than about 97% of its national peers. BuildingCensus bands the score into report-card grades; 97 falls in band A — high performer (85–100). 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. Olympia House Delaware LP's 25.8 kBtu/ft² across 210,000 sq ft works out to about 5.4 billion Btu (1,588 MWh-equivalent) in 2024. Its source EUI of 65.6 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 1,356,426 kWh of electricity, 7,861 therms of natural gas and 9,597 thousand gallons of water for the year.
Which law requires Olympia House Delaware LP to report its energy use?
Olympia House Delaware LP 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:26585188:2024). 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
- 672 Powell St· 209,931 sq ft · score 100 (A)
- 750 Kappock Street· 209,920 sq ft · score 100 (A)
- MGRE - 117-01 Metropolitan Avenue (Entry #2)· 209,844 sq ft
- OUB (AKA 370 Brooks Ave)· 209,819 sq ft · score 11 (D)
- EAST 028TH STREET· 209,802 sq ft · score 100 (A)
- 50 Riverside Drive· 209,780 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 Olympia House Delaware LP's energy grade?
Olympia House Delaware LP scores 97 out of 100 on ENERGY STAR — band A, high performer (85–100) — in its 2024 New York City disclosure. Scores are national percentiles against similar buildings; 75+ qualifies for ENERGY STAR certification.
How much energy does Olympia House Delaware LP use?
Its 2024 site energy-use intensity was 25.8 kBtu/ft² (65.6 kBtu/ft² source) across 210,000 sq ft, including 1,356,426 kWh of electricity and 7,861 therms of natural gas.
What are Olympia House Delaware LP's carbon emissions?
Olympia House Delaware LP reported 574 tCO₂e of greenhouse-gas emissions (2.7 kgCO₂e/ft²) for 2024.
Where is Olympia House Delaware LP?
Olympia House Delaware LP is at 279 East 44th Street, in New York City, New York 10017. Its coordinates are 40.75140, -73.97192 (latitude, longitude), as published in the Energy and Water Data Disclosure file.
How big is Olympia House Delaware LP and when was it built?
Olympia House Delaware LP has 210,000 sq ft of gross floor area, as reported in its 2024 disclosure. The disclosure lists 1960 as its year built. It is classed as multifamily housing.
Is Olympia House Delaware LP 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, “Olympia House Delaware LP, New York City, New York — 2024 benchmarking disclosure”, https://buildingcensus.com/buildings/new-york-city/olympia-house-delaware-lp-1fea4b42 (data as of October 2, 2026).