Knocklofty Mgmt, LLC
Multifamily Housing in New York City, NY · 155 E 52 Street · 10022
At a glance
Knocklofty Mgmt, LLC is a 73,025-square-foot multifamily housing building at 155 E 52 Street in New York City, New York, built in 1929. In its 2024 New York City benchmarking disclosure it reported an ENERGY STAR score of 42 out of 100 (grade D), a site energy-use intensity of 104.4 kBtu/ft² and 613 tCO₂e of greenhouse-gas emissions. That score is higher than 25% 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 | 42 (band D) |
| Site EUI | 104.4 kBtu/ft² |
| Source EUI | 156.0 kBtu/ft² |
| GHG emissions | 613 tCO₂e |
| GHG intensity | 8.4 kgCO₂e/ft² |
| Electricity | 561,100 kWh |
| Natural gas | 12,695 therms |
| Water use | 10,662 kgal |
| Gross floor area | 73,025 sq ft |
| Source record | nyc:11924398:2024 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2024latest | 42 | +11 | 104.4 kBtu/ft² | 613 tCO₂e |
| 2023 | 31 | -10 | 110.4 kBtu/ft² | 641 tCO₂e |
| 2022 | 41 | 108.1 kBtu/ft² | 567 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
- 155 E 52 Street
- City
- New York City
- State
- New York
- ZIP
- 10022
- Coordinates
- 40.75752, -73.97088
Within ~1 km
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How does Knocklofty Mgmt, 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. Knocklofty Mgmt, LLC's ENERGY STAR score of 42 compares with an average of 63 across the 22,829 that report a score; it scores higher than 25% of them and lower than 74%. Its site EUI of 104.4 kBtu/ft² is about 39% 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 8.4 kgCO₂e/ft² is about 61% above the group average of 5.2 kgCO₂e/ft².
At 73,025 sq ft, it is about 28% below the average floor area of 100,951 sq ft for those buildings. It was built in 1929, 23 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 Knocklofty Mgmt, LLC's energy performance changed over time?
BuildingCensus holds 3 New York City disclosures for Knocklofty Mgmt, LLC, covering report years 2022–2024. Its ENERGY STAR score went from 41 in 2022 to 42 in 2024 (+1 points). Site EUI moved from 108.1 kBtu/ft² (2022) to 104.4 kBtu/ft² (2024), a 3% decrease. Reported emissions went from 567 tCO₂e to 613 tCO₂e over the same span (up 8%).
What does an ENERGY STAR score of 42 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 42 means the building performs better than about 42% of its national peers. BuildingCensus bands the score into report-card grades; 42 falls in band D — lowest band (1–54). It sits 33 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. Knocklofty Mgmt, LLC's 104.4 kBtu/ft² across 73,025 sq ft works out to about 7.6 billion Btu (2,234 MWh-equivalent) in 2024. Its source EUI of 156.0 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 561,100 kWh of electricity, 12,695 therms of natural gas and 10,662 thousand gallons of water for the year.
Which law requires Knocklofty Mgmt, LLC to report its energy use?
Knocklofty Mgmt, 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:11924398:2024). 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
- 70-11 108th Street· 73,020 sq ft · score 71 (B)
- Harry T. Nance Apartments· 73,012 sq ft
- Nautilus_2790 Bragg Street· 73,000 sq ft · score 60 (C)
- 1185 LEBANON STREET· 73,000 sq ft · EUI 113.0 kBtu/ft²
- Redfern Bldg 2· 73,000 sq ft · EUI 30.8 kBtu/ft²
- Pinnacle - 3155 Rochambeau Ave· 73,000 sq ft · score 46 (D)
- 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 Knocklofty Mgmt, LLC's energy grade?
Knocklofty Mgmt, LLC scores 42 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 Knocklofty Mgmt, LLC use?
Its 2024 site energy-use intensity was 104.4 kBtu/ft² (156.0 kBtu/ft² source) across 73,025 sq ft, including 561,100 kWh of electricity and 12,695 therms of natural gas.
What are Knocklofty Mgmt, LLC's carbon emissions?
Knocklofty Mgmt, LLC reported 613 tCO₂e of greenhouse-gas emissions (8.4 kgCO₂e/ft²) for 2024.
Where is Knocklofty Mgmt, LLC?
Knocklofty Mgmt, LLC is at 155 E 52 Street, in New York City, New York 10022. Its coordinates are 40.75752, -73.97088 (latitude, longitude), as published in the Energy and Water Data Disclosure file.
How big is Knocklofty Mgmt, LLC and when was it built?
Knocklofty Mgmt, LLC has 73,025 sq ft of gross floor area, as reported in its 2024 disclosure. The disclosure lists 1929 as its year built. It is classed as multifamily housing.
Is Knocklofty Mgmt, 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, “Knocklofty Mgmt, LLC, New York City, New York — 2024 benchmarking disclosure”, https://buildingcensus.com/buildings/new-york-city/knocklofty-mgmt-llc-197ca296 (data as of October 2, 2026).