B-21 LLC
Strip Mall in New York City, NY · 2101-2137 Broadway · 11106
At a glance
B-21 LLC is a 25,240-square-foot strip mall building at 2101-2137 Broadway in New York City, New York, built in 1958. In its 2024 New York City benchmarking disclosure it reported a site energy-use intensity of 454.5 kBtu/ft² and 927 tCO₂e of greenhouse-gas emissions.
Local Law 84 (LL84) · reporting year 2024
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | — |
| Site EUI | 454.5 kBtu/ft² |
| Source EUI | 833.1 kBtu/ft² |
| GHG emissions | 927 tCO₂e |
| GHG intensity | 36.7 kgCO₂e/ft² |
| Electricity | 1,504,200 kWh |
| Natural gas | 63,392 therms |
| Gross floor area | 25,240 sq ft |
| Source record | nyc:6789815:2024 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2024latest | — | 454.5 kBtu/ft² | 927 tCO₂e | |
| 2023 | — | 489.0 kBtu/ft² | 936 tCO₂e | |
| 2022 | — | 117.7 kBtu/ft² | 206 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.
Own or manage this building? Claim it to correct the record and get compliance alerts.
Location
- Address
- 2101-2137 Broadway
- City
- New York City
- State
- New York
- ZIP
- 11106
Within ~1 km
Nearby benchmarked buildings
This source publishes no coordinates, so nearby buildings can't be resolved yet.
See also: most efficient in New York City · biggest emitters
How does B-21 LLC compare with other strip mall buildings in New York City?
The latest disclosures cover 215 strip mall buildings in New York City, out of 48,310 buildings citywide. Its site EUI of 454.5 kBtu/ft² is about 309% above the average of 111.0 kBtu/ft² — it uses more energy per square foot than the typical building in that group. Its emissions intensity of 36.7 kgCO₂e/ft² is about 318% above the group average of 8.8 kgCO₂e/ft².
At 25,240 sq ft, it is about 62% below the average floor area of 67,251 sq ft for those buildings. It was built in 1958, 14 years earlier than the group's average year built (1972). Across all 24 jurisdictions BuildingCensus covers, the 1,607 strip mall buildings average an ENERGY STAR score of 68 and a site EUI of 83.1 kBtu/ft².
How has B-21 LLC's energy performance changed over time?
BuildingCensus holds 3 New York City disclosures for B-21 LLC, covering report years 2022–2024. Site EUI moved from 117.7 kBtu/ft² (2022) to 454.5 kBtu/ft² (2024), an 286% increase. Reported emissions went from 206 tCO₂e to 927 tCO₂e over the same span (up 351%).
What does a site EUI of 454.5 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. B-21 LLC's 454.5 kBtu/ft² across 25,240 sq ft works out to about 11.5 billion Btu (3,362 MWh-equivalent) in 2024. Its source EUI of 833.1 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 1,504,200 kWh of electricity and 63,392 therms of natural gas for the year.
Which law requires B-21 LLC to report its energy use?
B-21 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:6789815:2024). 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 strip mall buildings in New York City
- 230-262 Arden Avenue - 5107725· 25,239 sq ft
- 230-262 Arden Avenue - 5107724· 25,239 sq ft
- 230-262 Arden Avenue - 5107723· 25,239 sq ft
- Mark Hazan· 25,232 sq ft · EUI 41.1 kBtu/ft²
- Greenridge Plaza - 4th Address· 22,253 sq ft · EUI 0.0 kBtu/ft²
- 1581 Story Avenue· 20,330 sq ft
- Strip Mall buildings in New York City· 215 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 B-21 LLC's energy grade?
B-21 LLC did not report an ENERGY STAR score in its 2024 disclosure, but its site energy-use intensity was 454.5 kBtu/ft².
How much energy does B-21 LLC use?
Its 2024 site energy-use intensity was 454.5 kBtu/ft² (833.1 kBtu/ft² source) across 25,240 sq ft, including 1,504,200 kWh of electricity and 63,392 therms of natural gas.
What are B-21 LLC's carbon emissions?
B-21 LLC reported 927 tCO₂e of greenhouse-gas emissions (36.7 kgCO₂e/ft²) for 2024.
Where is B-21 LLC?
B-21 LLC is at 2101-2137 Broadway, in New York City, New York 11106.
How big is B-21 LLC and when was it built?
B-21 LLC has 25,240 sq ft of gross floor area, as reported in its 2024 disclosure. The disclosure lists 1958 as its year built. It is classed as strip mall.
Is B-21 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).
Working with New York City building benchmarking records? Pro adds alerts, change history and CSV export ($49/mo); Enterprise adds full national files, the API and an MCP server for AI tools.
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, “B-21 LLC, New York City, New York — 2024 benchmarking disclosure”, https://buildingcensus.com/buildings/new-york-city/b-21-llc-844d3f8c (data as of October 2, 2026).