Prospect Ave Estates LLC
Multifamily Housing in New York City, NY · 851 E 163 ST · 10459
At a glance
Prospect Ave Estates LLC is a 33,640-square-foot multifamily housing building at 851 E 163 ST in New York City, New York, built in 1907. In its 2024 New York City benchmarking disclosure it reported an ENERGY STAR score of 18 out of 100 (grade D), a site energy-use intensity of 99.0 kBtu/ft² and 223 tCO₂e of greenhouse-gas emissions. That score is higher than 11% 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 | 18 (band D) |
| Site EUI | 99.0 kBtu/ft² |
| Source EUI | 142.9 kBtu/ft² |
| GHG emissions | 223 tCO₂e |
| GHG intensity | 6.6 kgCO₂e/ft² |
| Electricity | 219,522 kWh |
| Natural gas | 25,821 therms |
| Gross floor area | 33,640 sq ft |
| Source record | nyc:6808573:2024 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2024latest | 18 | +1 | 99.0 kBtu/ft² | 223 tCO₂e |
| 2023 | 17 | ±0 | 98.3 kBtu/ft² | 214 tCO₂e |
| 2022 | 17 | 106.7 kBtu/ft² | 214 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
- 851 E 163 ST
- City
- New York City
- State
- New York
- ZIP
- 10459
- Coordinates
- 40.82205, -73.90033
Within ~1 km
Nearby benchmarked buildings
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- 975 - 1000 Simpson Stscore —
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- MCKINLEYscore 99
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See also: most efficient in New York City · biggest emitters
How does Prospect Ave Estates LLC 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. Prospect Ave Estates LLC's ENERGY STAR score of 18 compares with an average of 63 across the 22,829 that report a score; it scores higher than 11% of them and lower than 89%. Its site EUI of 99.0 kBtu/ft² is about 32% 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 6.6 kgCO₂e/ft² is about 28% above the group average of 5.2 kgCO₂e/ft².
At 33,640 sq ft, it is about 67% 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 Prospect Ave Estates LLC's energy performance changed over time?
BuildingCensus holds 3 New York City disclosures for Prospect Ave Estates LLC, covering report years 2022–2024. Its ENERGY STAR score went from 17 in 2022 to 18 in 2024 (+1 points). Site EUI moved from 106.7 kBtu/ft² (2022) to 99.0 kBtu/ft² (2024), a 7% decrease. Reported emissions went from 214 tCO₂e to 223 tCO₂e over the same span (up 5%).
What does an ENERGY STAR score of 18 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 18 means the building performs better than about 18% of its national peers. BuildingCensus bands the score into report-card grades; 18 falls in band D — lowest band (1–54). It sits 57 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. Prospect Ave Estates LLC's 99.0 kBtu/ft² across 33,640 sq ft works out to about 3.3 billion Btu (976 MWh-equivalent) in 2024. Its source EUI of 142.9 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 219,522 kWh of electricity and 25,821 therms of natural gas for the year.
Which law requires Prospect Ave Estates LLC to report its energy use?
Prospect Ave Estates LLC 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:6808573:2024). 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
- 220 Park Avenue South· 33,638 sq ft · score 70 (B)
- 46 South 2nd Street· 33,636 sq ft · score 59 (C)
- 45-55 West 131st Street (Parent Property)· 33,632 sq ft · score 57 (C)
- 103-55 LLC· 33,630 sq ft · score 33 (D)
- 1401 Elm Avenue· 33,630 sq ft · score 11 (D)
- Shamsy: 570 West 183rd St· 33,624 sq ft · score 91 (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 Prospect Ave Estates LLC's energy grade?
Prospect Ave Estates LLC scores 18 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 Prospect Ave Estates LLC use?
Its 2024 site energy-use intensity was 99.0 kBtu/ft² (142.9 kBtu/ft² source) across 33,640 sq ft, including 219,522 kWh of electricity and 25,821 therms of natural gas.
What are Prospect Ave Estates LLC's carbon emissions?
Prospect Ave Estates LLC reported 223 tCO₂e of greenhouse-gas emissions (6.6 kgCO₂e/ft²) for 2024.
Where is Prospect Ave Estates LLC?
Prospect Ave Estates LLC is at 851 E 163 ST, in New York City, New York 10459. Its coordinates are 40.82205, -73.90033 (latitude, longitude), as published in the Energy and Water Data Disclosure file.
How big is Prospect Ave Estates LLC and when was it built?
Prospect Ave Estates LLC has 33,640 sq ft of gross floor area, as reported in its 2024 disclosure. The disclosure lists 1907 as its year built. It is classed as multifamily housing.
Is Prospect Ave Estates LLC 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, “Prospect Ave Estates LLC, New York City, New York — 2024 benchmarking disclosure”, https://buildingcensus.com/buildings/new-york-city/prospect-ave-estates-llc-0438dbd1 (data as of October 2, 2026).