Jenel Management - 399 Knickerbocker ave
Office in New York City, NY · 399 Knickerbocker ave · 11237
At a glance
Jenel Management - 399 Knickerbocker ave is a 37,918-square-foot office building in New York City, New York, built in 1931. In its 2024 New York City benchmarking disclosure it reported a site energy-use intensity of 38.3 kBtu/ft² and 142 tCO₂e of greenhouse-gas emissions.
Local Law 84 (LL84) · reporting year 2024
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | — |
| Site EUI | 38.3 kBtu/ft² |
| Source EUI | 88.6 kBtu/ft² |
| GHG emissions | 142 tCO₂e |
| GHG intensity | 3.8 kgCO₂e/ft² |
| Electricity | 306,869 kWh |
| Natural gas | 4,062 therms |
| Water use | 414 kgal |
| Gross floor area | 37,918 sq ft |
| Source record | nyc:6595210:2024 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2024latest | — | 38.3 kBtu/ft² | 142 tCO₂e | |
| 2023 | — | 51.0 kBtu/ft² | 182 tCO₂e | |
| 2022 | — | 32.8 kBtu/ft² | 89 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
- 399 Knickerbocker ave
- City
- New York City
- State
- New York
- ZIP
- 11237
- Coordinates
- 40.70000, -73.92043
Within ~1 km
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See also: most efficient in New York City · biggest emitters
How does Jenel Management - 399 Knickerbocker ave compare with other office buildings in New York City?
The latest disclosures cover 3,384 office buildings in New York City, out of 48,310 buildings citywide. Its site EUI of 38.3 kBtu/ft² is about 41% below the average of 64.5 kBtu/ft² — it uses less energy per square foot than the typical building in that group. Its emissions intensity of 3.8 kgCO₂e/ft² is about 35% below the group average of 5.8 kgCO₂e/ft².
At 37,918 sq ft, it is about 82% below the average floor area of 205,440 sq ft for those buildings. It was built in 1931, 9 years earlier than the group's average year built (1940). Across all 24 jurisdictions BuildingCensus covers, the 15,264 office buildings average an ENERGY STAR score of 73 and a site EUI of 59.3 kBtu/ft².
How has Jenel Management - 399 Knickerbocker ave's energy performance changed over time?
BuildingCensus holds 3 New York City disclosures for Jenel Management - 399 Knickerbocker ave, covering report years 2022–2024. Site EUI moved from 32.8 kBtu/ft² (2022) to 38.3 kBtu/ft² (2024), an 17% increase. Reported emissions went from 89 tCO₂e to 142 tCO₂e over the same span (up 61%).
What does a site EUI of 38.3 kBtu/ft² mean?
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. Jenel Management - 399 Knickerbocker ave's 38.3 kBtu/ft² across 37,918 sq ft works out to about 1.5 billion Btu (426 MWh-equivalent) in 2024. Its source EUI of 88.6 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 306,869 kWh of electricity, 4,062 therms of natural gas and 414 thousand gallons of water for the year.
Which law requires Jenel Management - 399 Knickerbocker ave to report its energy use?
Jenel Management - 399 Knickerbocker ave 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:6595210:2024). 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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- Office buildings in New York City· 3,384 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 Jenel Management - 399 Knickerbocker ave's energy grade?
Jenel Management - 399 Knickerbocker ave did not report an ENERGY STAR score in its 2024 disclosure, but its site energy-use intensity was 38.3 kBtu/ft².
How much energy does Jenel Management - 399 Knickerbocker ave use?
Its 2024 site energy-use intensity was 38.3 kBtu/ft² (88.6 kBtu/ft² source) across 37,918 sq ft, including 306,869 kWh of electricity and 4,062 therms of natural gas.
What are Jenel Management - 399 Knickerbocker ave's carbon emissions?
Jenel Management - 399 Knickerbocker ave reported 142 tCO₂e of greenhouse-gas emissions (3.8 kgCO₂e/ft²) for 2024.
Where is Jenel Management - 399 Knickerbocker ave?
Jenel Management - 399 Knickerbocker ave is in New York City, New York 11237. Its coordinates are 40.70000, -73.92043 (latitude, longitude), as published in the Energy and Water Data Disclosure file.
How big is Jenel Management - 399 Knickerbocker ave and when was it built?
Jenel Management - 399 Knickerbocker ave has 37,918 sq ft of gross floor area, as reported in its 2024 disclosure. The disclosure lists 1931 as its year built. It is classed as office.
Is Jenel Management - 399 Knickerbocker ave 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, “Jenel Management - 399 Knickerbocker ave, New York City, New York — 2024 benchmarking disclosure”, https://buildingcensus.com/buildings/new-york-city/jenel-management-399-knickerbocker-ave-c97cf215 (data as of October 2, 2026).