SKS: 70 Prospect Park Southwest
Multifamily Housing in New York City, NY · 70 Prospect Park Southwest · 11215
At a glance
SKS: 70 Prospect Park Southwest is a 53,135-square-foot multifamily housing building in New York City, New York, built in 1935. In its 2024 New York City benchmarking disclosure it reported an ENERGY STAR score of 1 out of 100 (grade D), a site energy-use intensity of 164.0 kBtu/ft² and 495 tCO₂e of greenhouse-gas emissions. That score is higher than 0% 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 | 1 (band D) |
| Site EUI | 164.0 kBtu/ft² |
| Source EUI | 189.2 kBtu/ft² |
| GHG emissions | 495 tCO₂e |
| GHG intensity | 9.3 kgCO₂e/ft² |
| Electricity | 151,207 kWh |
| Natural gas | 81,990 therms |
| Water use | 2,039 kgal |
| Gross floor area | 53,135 sq ft |
| Source record | nyc:6282929:2024 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2024latest | 1 | -13 | 164.0 kBtu/ft² | 495 tCO₂e |
| 2023 | 14 | -20 | 119.9 kBtu/ft² | 365 tCO₂e |
| 2022 | 34 | 106.4 kBtu/ft² | 316 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.
Own or manage this building? Claim it to correct the record and get compliance alerts.
Location
- Address
- 70 Prospect Park Southwest
- City
- New York City
- State
- New York
- ZIP
- 11215
- Coordinates
- 40.65889, -73.97553
Within ~1 km
Nearby benchmarked buildings
- Rocklyn: 500 19th Stscore 89
K-12 School · 192,295 sq ft
- RAC Bishop Ford 500 19 Stscore 89
K-12 School · 182,735 sq ft
- 651 Vanderbilt Streetscore 64
Multifamily Housing · 162,439 sq ft
- Park Vanderbilt Coop Aptsscore 57
Multifamily Housing · 158,490 sq ft
- Bishop Boardmanscore 53
Multifamily Housing · 147,170 sq ft
- BISHOP BOARDMAN APTSscore 41
Multifamily Housing · 147,170 sq ft
See also: most efficient in New York City · biggest emitters
How does SKS: 70 Prospect Park Southwest 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. SKS: 70 Prospect Park Southwest's ENERGY STAR score of 1 compares with an average of 63 across the 22,829 that report a score; it scores higher than 0% of them and lower than 97%. Its site EUI of 164.0 kBtu/ft² is about twice 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 9.3 kgCO₂e/ft² is about 79% above the group average of 5.2 kgCO₂e/ft².
At 53,135 sq ft, it is about half of the average floor area of 100,951 sq ft for those buildings. It was built in 1935, 17 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 SKS: 70 Prospect Park Southwest's energy performance changed over time?
BuildingCensus holds 3 New York City disclosures for SKS: 70 Prospect Park Southwest, covering report years 2022–2024. Its ENERGY STAR score went from 34 in 2022 to 1 in 2024 (-33 points); its best year on file was 2022, at 34. Site EUI moved from 106.4 kBtu/ft² (2022) to 164.0 kBtu/ft² (2024), an 54% increase. Reported emissions went from 316 tCO₂e to 495 tCO₂e over the same span (up 57%).
What does an ENERGY STAR score of 1 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: 1 is the bottom of the scale. BuildingCensus bands the score into report-card grades; 1 falls in band D — lowest band (1–54). It sits 74 points below 75, the threshold for ENERGY STAR certification. 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. SKS: 70 Prospect Park Southwest's 164.0 kBtu/ft² across 53,135 sq ft works out to about 8.7 billion Btu (2,554 MWh-equivalent) in 2024. Its source EUI of 189.2 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 151,207 kWh of electricity, 81,990 therms of natural gas and 2,039 thousand gallons of water for the year.
Which law requires SKS: 70 Prospect Park Southwest to report its energy use?
SKS: 70 Prospect Park Southwest 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:6282929:2024). 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 multifamily housing buildings in New York City
- 163 West 17th Street AKA 119 7th Avenue· 53,123 sq ft · score 1 (D)
- Decatur Apts LLC· 53,120 sq ft · score 6 (D)
- 30-40 21st St· 53,111 sq ft · score 63 (C)
- Linden Hill Section 2 Cooperative Corp (28-01 Union Street)· 53,108 sq ft
- Linden Hill Section 2 Cooperative Corp (28-02 Parsons Boulevard)· 53,108 sq ft
- 43-22 45th Street· 53,100 sq ft · score 66 (C)
- 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 SKS: 70 Prospect Park Southwest's energy grade?
SKS: 70 Prospect Park Southwest scores 1 out of 100 on ENERGY STAR — band D, lowest band (1–54) — in its 2024 New York City disclosure. Scores are national percentiles against similar buildings; 75+ qualifies for ENERGY STAR certification.
How much energy does SKS: 70 Prospect Park Southwest use?
Its 2024 site energy-use intensity was 164.0 kBtu/ft² (189.2 kBtu/ft² source) across 53,135 sq ft, including 151,207 kWh of electricity and 81,990 therms of natural gas.
What are SKS: 70 Prospect Park Southwest's carbon emissions?
SKS: 70 Prospect Park Southwest reported 495 tCO₂e of greenhouse-gas emissions (9.3 kgCO₂e/ft²) for 2024.
Where is SKS: 70 Prospect Park Southwest?
SKS: 70 Prospect Park Southwest is in New York City, New York 11215. Its coordinates are 40.65889, -73.97553 (latitude, longitude), as published in the Energy and Water Data Disclosure file.
How big is SKS: 70 Prospect Park Southwest and when was it built?
SKS: 70 Prospect Park Southwest has 53,135 sq ft of gross floor area, as reported in its 2024 disclosure. The disclosure lists 1935 as its year built. It is classed as multifamily housing.
Is SKS: 70 Prospect Park Southwest 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).
Working with New York City building benchmarking records? Pro adds alerts, change history and CSV export ($49/mo); Enterprise adds full national files, the API and an MCP server for AI tools.
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, “SKS: 70 Prospect Park Southwest, New York City, New York — 2024 benchmarking disclosure”, https://buildingcensus.com/buildings/new-york-city/sks-70-prospect-park-southwest-2bb987d6 (data as of October 2, 2026).