3950 Blackstone Avenue
Multifamily Housing in New York City, NY · 10471
At a glance
3950 Blackstone Avenue is a 260,700-square-foot multifamily housing building in New York City, New York, built in 1959. In its 2024 New York City benchmarking disclosure it reported an ENERGY STAR score of 94 out of 100 (grade A), a site energy-use intensity of 51.9 kBtu/ft² and 888 tCO₂e of greenhouse-gas emissions. That score is higher than 82% 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 | 94 (band A) |
| Site EUI | 51.9 kBtu/ft² |
| Source EUI | 72.8 kBtu/ft² |
| GHG emissions | 888 tCO₂e |
| GHG intensity | 3.4 kgCO₂e/ft² |
| Electricity | 798,768 kWh |
| Natural gas | 108,112 therms |
| Gross floor area | 260,700 sq ft |
| Source record | nyc:20238973:2024 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2024latest | 94 | -3 | 51.9 kBtu/ft² | 888 tCO₂e |
| 2023 | 97 | ±0 | 50.3 kBtu/ft² | 797 tCO₂e |
| 2022 | 97 | 53.7 kBtu/ft² | 792 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
- 3950 Blackstone Avenue
- City
- New York City
- State
- New York
- ZIP
- 10471
- Coordinates
- 40.89024, -73.91137
Within ~1 km
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See also: most efficient in New York City · biggest emitters
How does 3950 Blackstone Avenue 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. 3950 Blackstone Avenue's ENERGY STAR score of 94 compares with an average of 63 across the 22,829 that report a score; it scores higher than 82% of them and lower than 17%. Its site EUI of 51.9 kBtu/ft² is about 31% 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 3.4 kgCO₂e/ft² is about 34% below the group average of 5.2 kgCO₂e/ft².
At 260,700 sq ft, it is about 158% above the average floor area of 100,951 sq ft for those buildings. It was built in 1959, 7 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 3950 Blackstone Avenue's energy performance changed over time?
BuildingCensus holds 3 New York City disclosures for 3950 Blackstone Avenue, covering report years 2022–2024. Its ENERGY STAR score went from 97 in 2022 to 94 in 2024 (-3 points); its best year on file was 2022, at 97. Site EUI moved from 53.7 kBtu/ft² (2022) to 51.9 kBtu/ft² (2024), a 3% decrease. Reported emissions went from 792 tCO₂e to 888 tCO₂e over the same span (up 12%).
What does an ENERGY STAR score of 94 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 94 means the building performs better than about 94% of its national peers. BuildingCensus bands the score into report-card grades; 94 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. 3950 Blackstone Avenue's 51.9 kBtu/ft² across 260,700 sq ft works out to about 13.5 billion Btu (3,965 MWh-equivalent) in 2024. Its source EUI of 72.8 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 798,768 kWh of electricity and 108,112 therms of natural gas for the year.
Which law requires 3950 Blackstone Avenue to report its energy use?
3950 Blackstone Avenue 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:20238973:2024). 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.
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Frequently asked questions
What is 3950 Blackstone Avenue's energy grade?
3950 Blackstone Avenue scores 94 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 3950 Blackstone Avenue use?
Its 2024 site energy-use intensity was 51.9 kBtu/ft² (72.8 kBtu/ft² source) across 260,700 sq ft, including 798,768 kWh of electricity and 108,112 therms of natural gas.
What are 3950 Blackstone Avenue's carbon emissions?
3950 Blackstone Avenue reported 888 tCO₂e of greenhouse-gas emissions (3.4 kgCO₂e/ft²) for 2024.
Where is 3950 Blackstone Avenue?
3950 Blackstone Avenue is in New York City, New York 10471. Its coordinates are 40.89024, -73.91137 (latitude, longitude), as published in the Energy and Water Data Disclosure file.
How big is 3950 Blackstone Avenue and when was it built?
3950 Blackstone Avenue has 260,700 sq ft of gross floor area, as reported in its 2024 disclosure. The disclosure lists 1959 as its year built. It is classed as multifamily housing.
Is 3950 Blackstone Avenue 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, “3950 Blackstone Avenue, New York City, New York — 2024 benchmarking disclosure”, https://buildingcensus.com/buildings/new-york-city/3950-blackstone-avenue-952e5ecc (data as of October 2, 2026).