Building 12 (Cottage A)
Single-Family Home in New York City, NY · 279 West 253 Street · 10471
At a glance
Building 12 (Cottage A) is a 3,716-square-foot single-family home building at 279 West 253 Street in New York City, New York, built in 1918. In its 2024 New York City benchmarking disclosure it reported a site energy-use intensity of 54.4 kBtu/ft² and 15 tCO₂e of greenhouse-gas emissions.
Local Law 84 (LL84) · reporting year 2024
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | — |
| Site EUI | 54.4 kBtu/ft² |
| Source EUI | 55.0 kBtu/ft² |
| GHG emissions | 15 tCO₂e |
| GHG intensity | 4.0 kgCO₂e/ft² |
| Gross floor area | 3,716 sq ft |
| Source record | nyc:33964328:2024 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2024latest | — | 54.4 kBtu/ft² | 15 tCO₂e | |
| 2023 | — | 39.9 kBtu/ft² | 12 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 West 253 Street
- City
- New York City
- State
- New York
- ZIP
- 10471
- Coordinates
- 40.90066, -73.89971
Within ~1 km
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- AKAM - 5800 Arlington Avenuescore 62
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See also: most efficient in New York City · biggest emitters
How does Building 12 (Cottage A) compare with other single-family home buildings in New York City?
The latest disclosures cover 11 single-family home buildings in New York City, out of 48,310 buildings citywide. Its site EUI of 54.4 kBtu/ft² is about 14% below the average of 63.0 kBtu/ft² — it uses less energy per square foot than the typical building in that group. Its emissions intensity of 4.0 kgCO₂e/ft² is about 14% below the group average of 4.7 kgCO₂e/ft².
At 3,716 sq ft, it is about 79% below the average floor area of 17,488 sq ft for those buildings. It was built in 1918, 20 years earlier than the group's average year built (1939).
How has Building 12 (Cottage A)'s energy performance changed over time?
BuildingCensus holds 2 New York City disclosures for Building 12 (Cottage A), covering report years 2023–2024. Site EUI moved from 39.9 kBtu/ft² (2023) to 54.4 kBtu/ft² (2024), an 36% increase. Reported emissions went from 12 tCO₂e to 15 tCO₂e over the same span (up 29%).
What does a site EUI of 54.4 kBtu/ft² mean?
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. Building 12 (Cottage A)'s 54.4 kBtu/ft² across 3,716 sq ft works out to about 0.2 billion Btu (59 MWh-equivalent) in 2024. Its source EUI of 55.0 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher.
Which law requires Building 12 (Cottage A) to report its energy use?
Building 12 (Cottage A) 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:33964328:2024). 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 single-family home buildings in New York City
Frequently asked questions
What is Building 12 (Cottage A)'s energy grade?
Building 12 (Cottage A) did not report an ENERGY STAR score in its 2024 disclosure, but its site energy-use intensity was 54.4 kBtu/ft².
How much energy does Building 12 (Cottage A) use?
Its 2024 site energy-use intensity was 54.4 kBtu/ft² (55.0 kBtu/ft² source) across 3,716 sq ft.
What are Building 12 (Cottage A)'s carbon emissions?
Building 12 (Cottage A) reported 15 tCO₂e of greenhouse-gas emissions (4.0 kgCO₂e/ft²) for 2024.
Where is Building 12 (Cottage A)?
Building 12 (Cottage A) is at 279 West 253 Street, in New York City, New York 10471. Its coordinates are 40.90066, -73.89971 (latitude, longitude), as published in the Energy and Water Data Disclosure file.
How big is Building 12 (Cottage A) and when was it built?
Building 12 (Cottage A) has 3,716 sq ft of gross floor area, as reported in its 2024 disclosure. The disclosure lists 1918 as its year built. It is classed as single-family home.
Is Building 12 (Cottage A) 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, “Building 12 (Cottage A), New York City, New York — 2024 benchmarking disclosure”, https://buildingcensus.com/buildings/new-york-city/building-12-cottage-a-902be7ef (data as of October 2, 2026).