306 West 100th Street
Multifamily Housing in New York City, NY · 306 W. 100Th Street · 10025
At a glance
306 West 100th Street is a 49,581-square-foot multifamily housing building at 306 W. 100Th Street in New York City, New York, built in 1940. In its 2024 New York City benchmarking disclosure it reported an ENERGY STAR score of 94 out of 100 (grade A), a site energy-use intensity of 53.8 kBtu/ft² and 171 tCO₂e of greenhouse-gas emissions. That score is higher than 82% 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 | 94 (band A) |
| Site EUI | 53.8 kBtu/ft² |
| Source EUI | 73.0 kBtu/ft² |
| GHG emissions | 171 tCO₂e |
| GHG intensity | 3.4 kgCO₂e/ft² |
| Electricity | 137,127 kWh |
| Natural gas | 21,973 therms |
| Water use | 1,576 kgal |
| Gross floor area | 49,581 sq ft |
| Source record | nyc:10070309:2024 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2024latest | 94 | -6 | 53.8 kBtu/ft² | 171 tCO₂e |
| 2023 | 100 | +10 | 12.6 kBtu/ft² | 52 tCO₂e |
| 2022 | 90 | 65.4 kBtu/ft² | 159 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
- 306 W. 100Th Street
- City
- New York City
- State
- New York
- ZIP
- 10025
- Coordinates
- 40.79798, -73.97176
Within ~1 km
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See also: most efficient in New York City · biggest emitters
How does 306 West 100th Street 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. 306 West 100th Street's ENERGY STAR score of 94 compares with an average of 63 across the 22,829 that report a score; it scores higher than 82% of them and lower than 17%. Its site EUI of 53.8 kBtu/ft² is about 28% below 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 3.4 kgCO₂e/ft² is about 34% below the group average of 5.2 kgCO₂e/ft².
At 49,581 sq ft, it is about half of the average floor area of 100,951 sq ft for those buildings. It was built in 1940, 12 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 306 West 100th Street's energy performance changed over time?
BuildingCensus holds 3 New York City disclosures for 306 West 100th Street, covering report years 2022–2024. Its ENERGY STAR score went from 90 in 2022 to 94 in 2024 (+4 points); its best year on file was 2023, at 100. Site EUI moved from 65.4 kBtu/ft² (2022) to 53.8 kBtu/ft² (2024), a 18% decrease. Reported emissions went from 159 tCO₂e to 171 tCO₂e over the same span (up 7%).
What does an ENERGY STAR score of 94 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 94 means the building performs better than about 94% of its national peers. BuildingCensus bands the score into report-card grades; 94 falls in band A — high performer (85–100). Scores of 75 or higher meet the threshold for ENERGY STAR certification; certification itself is a separate, verified application that the disclosure does not record. 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. 306 West 100th Street's 53.8 kBtu/ft² across 49,581 sq ft works out to about 2.7 billion Btu (782 MWh-equivalent) in 2024. Its source EUI of 73.0 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 137,127 kWh of electricity, 21,973 therms of natural gas and 1,576 thousand gallons of water for the year.
Which law requires 306 West 100th Street to report its energy use?
306 West 100th Street 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:10070309:2024). 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
- 267 EDGECOMBE AVENUE - 38864· 49,579 sq ft · score 92 (A)
- 3900 Broadway, 10032· 49,576 sq ft · score 57 (C)
- HRV: 31-64 21st St· 49,576 sq ft · score 91 (A)
- Watermark Capital Management : 260 Knickerbocker· 49,573 sq ft · score 72 (B)
- 390 EAST 153 STREET - 38876· 49,566 sq ft · score 68 (C)
- 3162 VILLA AVE.· 49,563 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 306 West 100th Street's energy grade?
306 West 100th Street scores 94 out of 100 on ENERGY STAR — band A, high performer (85–100) — in its 2024 New York City disclosure. Scores are national percentiles against similar buildings; 75+ qualifies for ENERGY STAR certification.
How much energy does 306 West 100th Street use?
Its 2024 site energy-use intensity was 53.8 kBtu/ft² (73.0 kBtu/ft² source) across 49,581 sq ft, including 137,127 kWh of electricity and 21,973 therms of natural gas.
What are 306 West 100th Street's carbon emissions?
306 West 100th Street reported 171 tCO₂e of greenhouse-gas emissions (3.4 kgCO₂e/ft²) for 2024.
Where is 306 West 100th Street?
306 West 100th Street is at 306 W. 100Th Street, in New York City, New York 10025. Its coordinates are 40.79798, -73.97176 (latitude, longitude), as published in the Energy and Water Data Disclosure file.
How big is 306 West 100th Street and when was it built?
306 West 100th Street has 49,581 sq ft of gross floor area, as reported in its 2024 disclosure. The disclosure lists 1940 as its year built. It is classed as multifamily housing.
Is 306 West 100th Street 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, “306 West 100th Street, New York City, New York — 2024 benchmarking disclosure”, https://buildingcensus.com/buildings/new-york-city/306-west-100th-street-65af1418 (data as of October 2, 2026).