235 WEST 63rd STREET - 41963
Multifamily Housing in New York City, NY · 235 WEST 63rd STREET · 10023
At a glance
235 WEST 63rd STREET - 41963 is a 29,139-square-foot multifamily housing building in New York City, New York, built in 1907. In its 2023 New York City benchmarking disclosure it reported an ENERGY STAR score of 100 out of 100 (grade A), a site energy-use intensity of 14.2 kBtu/ft² and 41 tCO₂e of greenhouse-gas emissions. That score is higher than 90% of the 22,829 scored multifamily housing buildings in New York City.
Local Law 84 (LL84) · reporting year 2023
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | 100 (band A) |
| Site EUI | 14.2 kBtu/ft² |
| Source EUI | 35.8 kBtu/ft² |
| GHG emissions | 41 tCO₂e |
| GHG intensity | 1.4 kgCO₂e/ft² |
| Electricity | 101,834 kWh |
| Natural gas | 666 therms |
| Water use | 1,177 kgal |
| Gross floor area | 29,139 sq ft |
| Source record | nyc:6309108:2023 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2023latest | 100 | ±0 | 14.2 kBtu/ft² | 41 tCO₂e |
| 2022 | 100 | 15.8 kBtu/ft² | 34 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
- 235 WEST 63rd STREET
- City
- New York City
- State
- New York
- ZIP
- 10023
- Coordinates
- 40.77379, -73.98785
Within ~1 km
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See also: most efficient in New York City · biggest emitters
How does 235 WEST 63rd STREET - 41963 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. 235 WEST 63rd STREET - 41963's ENERGY STAR score of 100 compares with an average of 63 across the 22,829 that report a score; it scores higher than 90% of them. Its site EUI of 14.2 kBtu/ft² is about 81% 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 1.4 kgCO₂e/ft² is about 73% below the group average of 5.2 kgCO₂e/ft².
At 29,139 sq ft, it is about 71% below the average floor area of 100,951 sq ft for those buildings. It was built in 1907, 45 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 235 WEST 63rd STREET - 41963's energy performance changed over time?
BuildingCensus holds 2 New York City disclosures for 235 WEST 63rd STREET - 41963, covering report years 2022–2023. Its ENERGY STAR score was 100 in both 2022 and 2023. Site EUI moved from 15.8 kBtu/ft² (2022) to 14.2 kBtu/ft² (2023), a 10% decrease. Reported emissions went from 34 tCO₂e to 41 tCO₂e over the same span (up 21%).
What does an ENERGY STAR score of 100 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: 100 is the top of the scale. BuildingCensus bands the score into report-card grades; 100 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. 235 WEST 63rd STREET - 41963's 14.2 kBtu/ft² across 29,139 sq ft works out to about 0.4 billion Btu (121 MWh-equivalent) in 2023. Its source EUI of 35.8 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 101,834 kWh of electricity, 666 therms of natural gas and 1,177 thousand gallons of water for the year.
Which law requires 235 WEST 63rd STREET - 41963 to report its energy use?
235 WEST 63rd STREET - 41963 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 2023 disclosure (source record nyc:6309108:2023). 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
- 2403 Creston Avenue· 29,135 sq ft · score 39 (D)
- Prime: 3231 Barker Ave· 29,130 sq ft · score 95 (A)
- 3376 Fenton Avenue· 29,124 sq ft · score 1 (D)
- Division: 52 Lispenard St.· 29,124 sq ft · EUI 52.3 kBtu/ft²
- 99 Suffolk Street· 29,123 sq ft · score 59 (C)
- 136 Jackson Street· 29,119 sq ft · score 97 (A)
- 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 235 WEST 63rd STREET - 41963's energy grade?
235 WEST 63rd STREET - 41963 scores 100 out of 100 on ENERGY STAR — band A, high performer (85–100) — in its 2023 New York City disclosure. Scores are national percentiles against similar buildings; 75+ qualifies for ENERGY STAR certification.
How much energy does 235 WEST 63rd STREET - 41963 use?
Its 2023 site energy-use intensity was 14.2 kBtu/ft² (35.8 kBtu/ft² source) across 29,139 sq ft, including 101,834 kWh of electricity and 666 therms of natural gas.
What are 235 WEST 63rd STREET - 41963's carbon emissions?
235 WEST 63rd STREET - 41963 reported 41 tCO₂e of greenhouse-gas emissions (1.4 kgCO₂e/ft²) for 2023.
Where is 235 WEST 63rd STREET - 41963?
235 WEST 63rd STREET - 41963 is in New York City, New York 10023. Its coordinates are 40.77379, -73.98785 (latitude, longitude), as published in the Energy and Water Data Disclosure file.
How big is 235 WEST 63rd STREET - 41963 and when was it built?
235 WEST 63rd STREET - 41963 has 29,139 sq ft of gross floor area, as reported in its 2023 disclosure. The disclosure lists 1907 as its year built. It is classed as multifamily housing.
Is 235 WEST 63rd STREET - 41963 covered by Local Law 84 (LL84)?
Yes — it appears in the 2023 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, “235 WEST 63rd STREET - 41963, New York City, New York — 2023 benchmarking disclosure”, https://buildingcensus.com/buildings/new-york-city/235-west-63rd-street-41963-83887c26 (data as of October 2, 2026).