631 REALTY ASSOCIATESLLC
Multifamily Housing in New York City, NY · 631 EAST 220 STREET · 10467
At a glance
631 REALTY ASSOCIATESLLC is a 42,170-square-foot multifamily housing building at 631 EAST 220 STREET in New York City, New York, built in 1930. In its 2024 New York City benchmarking disclosure it reported an ENERGY STAR score of 68 out of 100 (grade C), a site energy-use intensity of 92.3 kBtu/ft² and 247 tCO₂e of greenhouse-gas emissions. That score is higher than 49% 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 | 68 (band C) |
| Site EUI | 92.3 kBtu/ft² |
| Source EUI | 123.8 kBtu/ft² |
| GHG emissions | 247 tCO₂e |
| GHG intensity | 5.9 kgCO₂e/ft² |
| Electricity | 190,236 kWh |
| Natural gas | 32,427 therms |
| Water use | 3,813 kgal |
| Gross floor area | 42,170 sq ft |
| Source record | nyc:11216608:2024 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2024latest | 68 | +2 | 92.3 kBtu/ft² | 247 tCO₂e |
| 2023 | 66 | +7 | 92.4 kBtu/ft² | 242 tCO₂e |
| 2022 | 59 | 103.7 kBtu/ft² | 253 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
- 631 EAST 220 STREET
- City
- New York City
- State
- New York
- ZIP
- 10467
- Coordinates
- 40.88487, -73.86423
Within ~1 km
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See also: most efficient in New York City · biggest emitters
How does 631 REALTY ASSOCIATESLLC 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. 631 REALTY ASSOCIATESLLC's ENERGY STAR score of 68 compares with an average of 63 across the 22,829 that report a score; it scores higher than 49% of them and lower than 50%. Its site EUI of 92.3 kBtu/ft² is about 23% above the average of 74.9 kBtu/ft² — it uses more energy per square foot than the typical building in that group. Its emissions intensity of 5.9 kgCO₂e/ft² is about 13% above the group average of 5.2 kgCO₂e/ft².
At 42,170 sq ft, it is about 58% below the average floor area of 100,951 sq ft for those buildings. It was built in 1930, 22 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 631 REALTY ASSOCIATESLLC's energy performance changed over time?
BuildingCensus holds 3 New York City disclosures for 631 REALTY ASSOCIATESLLC, covering report years 2022–2024. Its ENERGY STAR score went from 59 in 2022 to 68 in 2024 (+9 points). Site EUI moved from 103.7 kBtu/ft² (2022) to 92.3 kBtu/ft² (2024), a 11% decrease. Reported emissions went from 253 tCO₂e to 247 tCO₂e over the same span (down 2%).
What does an ENERGY STAR score of 68 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 68 means the building performs better than about 68% of its national peers. BuildingCensus bands the score into report-card grades; 68 falls in band C — below median (55–69). It sits 7 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. 631 REALTY ASSOCIATESLLC's 92.3 kBtu/ft² across 42,170 sq ft works out to about 3.9 billion Btu (1,141 MWh-equivalent) in 2024. Its source EUI of 123.8 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 190,236 kWh of electricity, 32,427 therms of natural gas and 3,813 thousand gallons of water for the year.
Which law requires 631 REALTY ASSOCIATESLLC to report its energy use?
631 REALTY ASSOCIATESLLC 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:11216608:2024). 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
- 77 Clarkson Avenue· 42,168 sq ft · score 100 (A)
- Colonial Estates - 368 97th Street· 42,168 sq ft · score 61 (C)
- 77 Clarkson Ave· 42,168 sq ft · score 100 (A)
- 3188 Villa Avenue· 42,153 sq ft · score 84 (B)
- 2-02761-0149 (Hunts 890-892)· 42,150 sq ft · score 58 (C)
- 1704 Seddon Street· 42,140 sq ft · score 93 (A)
- 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 631 REALTY ASSOCIATESLLC's energy grade?
631 REALTY ASSOCIATESLLC scores 68 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 631 REALTY ASSOCIATESLLC use?
Its 2024 site energy-use intensity was 92.3 kBtu/ft² (123.8 kBtu/ft² source) across 42,170 sq ft, including 190,236 kWh of electricity and 32,427 therms of natural gas.
What are 631 REALTY ASSOCIATESLLC's carbon emissions?
631 REALTY ASSOCIATESLLC reported 247 tCO₂e of greenhouse-gas emissions (5.9 kgCO₂e/ft²) for 2024.
Where is 631 REALTY ASSOCIATESLLC?
631 REALTY ASSOCIATESLLC is at 631 EAST 220 STREET, in New York City, New York 10467. Its coordinates are 40.88487, -73.86423 (latitude, longitude), as published in the Energy and Water Data Disclosure file.
How big is 631 REALTY ASSOCIATESLLC and when was it built?
631 REALTY ASSOCIATESLLC has 42,170 sq ft of gross floor area, as reported in its 2024 disclosure. The disclosure lists 1930 as its year built. It is classed as multifamily housing.
Is 631 REALTY ASSOCIATESLLC 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, “631 REALTY ASSOCIATESLLC, New York City, New York — 2024 benchmarking disclosure”, https://buildingcensus.com/buildings/new-york-city/631-realty-associatesllc-cca8db42 (data as of October 2, 2026).