662 E21 Realty LLC
Multifamily Housing in New York City, NY · 662 E21 Street · 11226
At a glance
662 E21 Realty LLC is a 28,625-square-foot multifamily housing building at 662 E21 Street in New York City, New York, built in 1931. In its 2024 New York City benchmarking disclosure it reported an ENERGY STAR score of 54 out of 100 (grade D), a site energy-use intensity of 74.2 kBtu/ft² and 131 tCO₂e of greenhouse-gas emissions. That score is higher than 35% 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 | 54 (band D) |
| Site EUI | 74.2 kBtu/ft² |
| Source EUI | 95.7 kBtu/ft² |
| GHG emissions | 131 tCO₂e |
| GHG intensity | 4.6 kgCO₂e/ft² |
| Electricity | 85,609 kWh |
| Natural gas | 18,306 therms |
| Gross floor area | 28,625 sq ft |
| Source record | nyc:11702795:2024 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2024latest | 54 | +18 | 74.2 kBtu/ft² | 131 tCO₂e |
| 2023 | 36 | -18 | 82.1 kBtu/ft² | 142 tCO₂e |
| 2022 | 54 | 77.9 kBtu/ft² | 128 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
- 662 E21 Street
- City
- New York City
- State
- New York
- ZIP
- 11226
- Coordinates
- 40.63764, -73.95761
Within ~1 km
Nearby benchmarked buildings
- Benchmarking Group - 33score —
College/University · 2,518,921 sq ft
College/University · 321,828 sq ft
College/University · 309,426 sq ft
College/University · 291,972 sq ft
College/University · 291,594 sq ft
College/University · 276,236 sq ft
See also: most efficient in New York City · biggest emitters
How does 662 E21 Realty 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. 662 E21 Realty LLC's ENERGY STAR score of 54 compares with an average of 63 across the 22,829 that report a score; it scores higher than 35% of them and lower than 64%. Its site EUI of 74.2 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 4.6 kgCO₂e/ft² is about 12% below the group average of 5.2 kgCO₂e/ft².
At 28,625 sq ft, it is about 72% below the average floor area of 100,951 sq ft for those buildings. It was built in 1931, 21 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 662 E21 Realty LLC's energy performance changed over time?
BuildingCensus holds 3 New York City disclosures for 662 E21 Realty LLC, covering report years 2022–2024. Its ENERGY STAR score was 54 in both 2022 and 2024. Site EUI moved from 77.9 kBtu/ft² (2022) to 74.2 kBtu/ft² (2024), a 5% decrease. Reported emissions went from 128 tCO₂e to 131 tCO₂e over the same span (up 2%).
What does an ENERGY STAR score of 54 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 54 means the building performs better than about 54% of its national peers. BuildingCensus bands the score into report-card grades; 54 falls in band D — lowest band (1–54). It sits 21 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. 662 E21 Realty LLC's 74.2 kBtu/ft² across 28,625 sq ft works out to about 2.1 billion Btu (622 MWh-equivalent) in 2024. Its source EUI of 95.7 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 85,609 kWh of electricity and 18,306 therms of natural gas for the year.
Which law requires 662 E21 Realty LLC to report its energy use?
662 E21 Realty 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:11702795:2024). 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
- 183 Thompson St.· 28,623 sq ft · score 100 (A)
- 267 LINCOLN PL· 28,620 sq ft · score 78 (B)
- 185 Avenue C· 28,620 sq ft · score 4 (D)
- 326 ST JOHNS PL· 28,620 sq ft · score 77 (B)
- 2170 Walton Ave· 28,615 sq ft · score 100 (A)
- 2170 Walton Avenue· 28,615 sq ft · score 34 (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 662 E21 Realty LLC's energy grade?
662 E21 Realty LLC scores 54 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 662 E21 Realty LLC use?
Its 2024 site energy-use intensity was 74.2 kBtu/ft² (95.7 kBtu/ft² source) across 28,625 sq ft, including 85,609 kWh of electricity and 18,306 therms of natural gas.
What are 662 E21 Realty LLC's carbon emissions?
662 E21 Realty LLC reported 131 tCO₂e of greenhouse-gas emissions (4.6 kgCO₂e/ft²) for 2024.
Where is 662 E21 Realty LLC?
662 E21 Realty LLC is at 662 E21 Street, in New York City, New York 11226. Its coordinates are 40.63764, -73.95761 (latitude, longitude), as published in the Energy and Water Data Disclosure file.
How big is 662 E21 Realty LLC and when was it built?
662 E21 Realty LLC has 28,625 sq ft of gross floor area, as reported in its 2024 disclosure. The disclosure lists 1931 as its year built. It is classed as multifamily housing.
Is 662 E21 Realty 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, “662 E21 Realty LLC, New York City, New York — 2024 benchmarking disclosure”, https://buildingcensus.com/buildings/new-york-city/662-e21-realty-llc-d2efd404 (data as of October 2, 2026).