C Uptown Realty: 51 Bennett Ave
Multifamily Housing in New York City, NY · 51 Bennett Ave · 10033
At a glance
C Uptown Realty: 51 Bennett Ave is a 39,125-square-foot multifamily housing building in New York City, New York, built in 1924. In its 2023 New York City benchmarking disclosure it reported an ENERGY STAR score of 75 out of 100 (grade B), a site energy-use intensity of 94.5 kBtu/ft² and 226 tCO₂e of greenhouse-gas emissions. That score is higher than 57% 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 | 75 (band B) |
| Site EUI | 94.5 kBtu/ft² |
| Source EUI | 122.7 kBtu/ft² |
| GHG emissions | 226 tCO₂e |
| GHG intensity | 5.8 kgCO₂e/ft² |
| Electricity | 153,756 kWh |
| Natural gas | 31,732 therms |
| Gross floor area | 39,125 sq ft |
| Source record | nyc:6282536:2023 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2023latest | 75 | +10 | 94.5 kBtu/ft² | 226 tCO₂e |
| 2022 | 65 | 107.7 kBtu/ft² | 243 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
- 51 Bennett Ave
- City
- New York City
- State
- New York
- ZIP
- 10033
- Coordinates
- 40.85202, -73.93586
Within ~1 km
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See also: most efficient in New York City · biggest emitters
How does C Uptown Realty: 51 Bennett Ave 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. C Uptown Realty: 51 Bennett Ave's ENERGY STAR score of 75 compares with an average of 63 across the 22,829 that report a score; it scores higher than 57% of them and lower than 42%. Its site EUI of 94.5 kBtu/ft² is about 26% 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 5.8 kgCO₂e/ft² is about 12% above the group average of 5.2 kgCO₂e/ft².
At 39,125 sq ft, it is about 61% below the average floor area of 100,951 sq ft for those buildings. It was built in 1924, 28 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 C Uptown Realty: 51 Bennett Ave's energy performance changed over time?
BuildingCensus holds 2 New York City disclosures for C Uptown Realty: 51 Bennett Ave, covering report years 2022–2023. Its ENERGY STAR score went from 65 in 2022 to 75 in 2023 (+10 points). Site EUI moved from 107.7 kBtu/ft² (2022) to 94.5 kBtu/ft² (2023), a 12% decrease. Reported emissions went from 243 tCO₂e to 226 tCO₂e over the same span (down 7%).
What does an ENERGY STAR score of 75 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 75 means the building performs better than about 75% of its national peers. BuildingCensus bands the score into report-card grades; 75 falls in band B — above median (70–84). 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. C Uptown Realty: 51 Bennett Ave's 94.5 kBtu/ft² across 39,125 sq ft works out to about 3.7 billion Btu (1,084 MWh-equivalent) in 2023. Its source EUI of 122.7 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 153,756 kWh of electricity and 31,732 therms of natural gas for the year.
Which law requires C Uptown Realty: 51 Bennett Ave to report its energy use?
C Uptown Realty: 51 Bennett Ave 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:6282536:2023). 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
- 598 President Street· 39,123 sq ft · score 78 (B)
- 598 President Street, Brooklyn· 39,123 sq ft · score 74 (B)
- 130 Morningside Dr· 39,120 sq ft · score 76 (B)
- 142-146 West 83rd Street· 39,120 sq ft · score 3 (D)
- ZARA - 166 St LLC· 39,120 sq ft · score 95 (A)
- Hayco: 1920 Osborne Place· 39,111 sq ft · EUI 80.0 kBtu/ft²
- Multifamily Housing buildings in New York City· 33,022 benchmarked
- All New York City benchmarked buildings· Local Law 84 (LL84)
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Frequently asked questions
What is C Uptown Realty: 51 Bennett Ave's energy grade?
C Uptown Realty: 51 Bennett Ave scores 75 out of 100 on ENERGY STAR — band B, above median (70–84) — in its 2023 New York City disclosure. Scores are national percentiles against similar buildings; 75+ qualifies for ENERGY STAR certification.
How much energy does C Uptown Realty: 51 Bennett Ave use?
Its 2023 site energy-use intensity was 94.5 kBtu/ft² (122.7 kBtu/ft² source) across 39,125 sq ft, including 153,756 kWh of electricity and 31,732 therms of natural gas.
What are C Uptown Realty: 51 Bennett Ave's carbon emissions?
C Uptown Realty: 51 Bennett Ave reported 226 tCO₂e of greenhouse-gas emissions (5.8 kgCO₂e/ft²) for 2023.
Where is C Uptown Realty: 51 Bennett Ave?
C Uptown Realty: 51 Bennett Ave is in New York City, New York 10033. Its coordinates are 40.85202, -73.93586 (latitude, longitude), as published in the Energy and Water Data Disclosure file.
How big is C Uptown Realty: 51 Bennett Ave and when was it built?
C Uptown Realty: 51 Bennett Ave has 39,125 sq ft of gross floor area, as reported in its 2023 disclosure. The disclosure lists 1924 as its year built. It is classed as multifamily housing.
Is C Uptown Realty: 51 Bennett Ave 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, “C Uptown Realty: 51 Bennett Ave, New York City, New York — 2023 benchmarking disclosure”, https://buildingcensus.com/buildings/new-york-city/c-uptown-realty-51-bennett-ave-dd64e58c (data as of October 2, 2026).