Building 15 (Cottage D)
Single-Family Home in New York City, NY · 299 West 253 Street · 10471
At a glance
Building 15 (Cottage D) is a 3,761-square-foot single-family home building at 299 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 22.0 kBtu/ft² and 6 tCO₂e of greenhouse-gas emissions.
Local Law 84 (LL84) · reporting year 2024
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | — |
| Site EUI | 22.0 kBtu/ft² |
| Source EUI | 22.2 kBtu/ft² |
| GHG emissions | 6 tCO₂e |
| GHG intensity | 1.6 kgCO₂e/ft² |
| Gross floor area | 3,761 sq ft |
| Source record | nyc:33964335:2024 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2024latest | — | 22.0 kBtu/ft² | 6 tCO₂e | |
| 2023 | — | 22.1 kBtu/ft² | 6 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
- 299 West 253 Street
- City
- New York City
- State
- New York
- ZIP
- 10471
- Coordinates
- 40.90066, -73.90069
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 15 (Cottage D) 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 22.0 kBtu/ft² is about 65% 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 1.6 kgCO₂e/ft² is about 65% below the group average of 4.7 kgCO₂e/ft².
At 3,761 sq ft, it is about 78% 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 15 (Cottage D)'s energy performance changed over time?
BuildingCensus holds 2 New York City disclosures for Building 15 (Cottage D), covering report years 2023–2024. Site EUI moved from 22.1 kBtu/ft² (2023) to 22.0 kBtu/ft² (2024), a 0% decrease. Reported emissions went from 6 tCO₂e to 6 tCO₂e over the same span (down 4%).
What does a site EUI of 22.0 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 15 (Cottage D)'s 22.0 kBtu/ft² across 3,761 sq ft works out to about 0.1 billion Btu (24 MWh-equivalent) in 2024. Its source EUI of 22.2 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher.
Which law requires Building 15 (Cottage D) to report its energy use?
Building 15 (Cottage D) 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:33964335:2024). 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
- Building 14 (Cottage C)· 3,746 sq ft · EUI 49.2 kBtu/ft²
- Building 12 (Cottage A)· 3,716 sq ft · EUI 54.4 kBtu/ft²
- Building 13 (Cottage B)· 3,688 sq ft · EUI 53.4 kBtu/ft²
- Broderick (Pizzi)· 2,700 sq ft · score 2 (D)
- 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 Building 15 (Cottage D)'s energy grade?
Building 15 (Cottage D) did not report an ENERGY STAR score in its 2024 disclosure, but its site energy-use intensity was 22.0 kBtu/ft².
How much energy does Building 15 (Cottage D) use?
Its 2024 site energy-use intensity was 22.0 kBtu/ft² (22.2 kBtu/ft² source) across 3,761 sq ft.
What are Building 15 (Cottage D)'s carbon emissions?
Building 15 (Cottage D) reported 6 tCO₂e of greenhouse-gas emissions (1.6 kgCO₂e/ft²) for 2024.
Where is Building 15 (Cottage D)?
Building 15 (Cottage D) is at 299 West 253 Street, in New York City, New York 10471. Its coordinates are 40.90066, -73.90069 (latitude, longitude), as published in the Energy and Water Data Disclosure file.
How big is Building 15 (Cottage D) and when was it built?
Building 15 (Cottage D) has 3,761 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 15 (Cottage D) 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 15 (Cottage D), New York City, New York — 2024 benchmarking disclosure”, https://buildingcensus.com/buildings/new-york-city/building-15-cottage-d-c6fb2326 (data as of October 2, 2026).