LEGACY PROPERTY GROUP EAST LLC:3451-3455 KNOX PLACE
Multifamily Housing in New York City, NY · 3451-3455 KNOX PLACE · 10467
At a glance
LEGACY PROPERTY GROUP EAST LLC:3451-3455 KNOX PLACE is a 56,000-square-foot multifamily housing building in New York City, New York, built in 1926. In its 2024 New York City benchmarking disclosure it reported an ENERGY STAR score of 67 out of 100 (grade C), a site energy-use intensity of 70.8 kBtu/ft² and 240 tCO₂e of greenhouse-gas emissions. That score is higher than 48% 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 | 67 (band C) |
| Site EUI | 70.8 kBtu/ft² |
| Source EUI | 89.1 kBtu/ft² |
| GHG emissions | 240 tCO₂e |
| GHG intensity | 4.3 kgCO₂e/ft² |
| Electricity | 138,304 kWh |
| Natural gas | 34,923 therms |
| Water use | 3,299 kgal |
| Gross floor area | 56,000 sq ft |
| Source record | nyc:51288093:2024 |
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
- 3451-3455 KNOX PLACE
- City
- New York City
- State
- New York
- ZIP
- 10467
- Coordinates
- 40.88221, -73.88318
Within ~1 km
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See also: most efficient in New York City · biggest emitters
How does LEGACY PROPERTY GROUP EAST LLC:3451-3455 KNOX PLACE 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. LEGACY PROPERTY GROUP EAST LLC:3451-3455 KNOX PLACE's ENERGY STAR score of 67 compares with an average of 63 across the 22,829 that report a score; it scores higher than 48% of them and lower than 51%. Its site EUI of 70.8 kBtu/ft² is roughly in line with 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 4.3 kgCO₂e/ft² is about 18% below the group average of 5.2 kgCO₂e/ft².
At 56,000 sq ft, it is about 45% below the average floor area of 100,951 sq ft for those buildings. It was built in 1926, 26 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.
What does an ENERGY STAR score of 67 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 67 means the building performs better than about 67% of its national peers. BuildingCensus bands the score into report-card grades; 67 falls in band C — below median (55–69). It sits 8 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. LEGACY PROPERTY GROUP EAST LLC:3451-3455 KNOX PLACE's 70.8 kBtu/ft² across 56,000 sq ft works out to about 4 billion Btu (1,162 MWh-equivalent) in 2024. Its source EUI of 89.1 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 138,304 kWh of electricity, 34,923 therms of natural gas and 3,299 thousand gallons of water for the year.
Which law requires LEGACY PROPERTY GROUP EAST LLC:3451-3455 KNOX PLACE to report its energy use?
LEGACY PROPERTY GROUP EAST LLC:3451-3455 KNOX PLACE 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:51288093:2024). 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
- 2121 Matthews LLC· 55,998 sq ft · score 99 (A)
- 3060 Hull Avenue· 55,986 sq ft · score 91 (A)
- 601 W. 192nd Street· 55,980 sq ft · score 21 (D)
- 5 East 16th Street· 55,964 sq ft · EUI 50.2 kBtu/ft²
- FEMC: 28-15 34th Street· 55,961 sq ft · score 32 (D)
- 10 Ave P - Zeal Management Co.· 55,961 sq ft
- 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 LEGACY PROPERTY GROUP EAST LLC:3451-3455 KNOX PLACE's energy grade?
LEGACY PROPERTY GROUP EAST LLC:3451-3455 KNOX PLACE scores 67 out of 100 on ENERGY STAR — band C, below median (55–69) — in its 2024 New York City disclosure. Scores are national percentiles against similar buildings; 75+ qualifies for ENERGY STAR certification.
How much energy does LEGACY PROPERTY GROUP EAST LLC:3451-3455 KNOX PLACE use?
Its 2024 site energy-use intensity was 70.8 kBtu/ft² (89.1 kBtu/ft² source) across 56,000 sq ft, including 138,304 kWh of electricity and 34,923 therms of natural gas.
What are LEGACY PROPERTY GROUP EAST LLC:3451-3455 KNOX PLACE's carbon emissions?
LEGACY PROPERTY GROUP EAST LLC:3451-3455 KNOX PLACE reported 240 tCO₂e of greenhouse-gas emissions (4.3 kgCO₂e/ft²) for 2024.
Where is LEGACY PROPERTY GROUP EAST LLC:3451-3455 KNOX PLACE?
LEGACY PROPERTY GROUP EAST LLC:3451-3455 KNOX PLACE is in New York City, New York 10467. Its coordinates are 40.88221, -73.88318 (latitude, longitude), as published in the Energy and Water Data Disclosure file.
How big is LEGACY PROPERTY GROUP EAST LLC:3451-3455 KNOX PLACE and when was it built?
LEGACY PROPERTY GROUP EAST LLC:3451-3455 KNOX PLACE has 56,000 sq ft of gross floor area, as reported in its 2024 disclosure. The disclosure lists 1926 as its year built. It is classed as multifamily housing.
Is LEGACY PROPERTY GROUP EAST LLC:3451-3455 KNOX PLACE 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, “LEGACY PROPERTY GROUP EAST LLC:3451-3455 KNOX PLACE, New York City, New York — 2024 benchmarking disclosure”, https://buildingcensus.com/buildings/new-york-city/legacy-property-group-east-llc-3451-3455-knox-place-9f28f2d4 (data as of October 2, 2026).