KASHTAN REALTY LLC
Multifamily Housing in New York City, NY · 6629 BROADWAY · 10471
At a glance
KASHTAN REALTY LLC is a 76,009-square-foot multifamily housing building at 6629 BROADWAY in New York City, New York, built in 1962. In its 2024 New York City benchmarking disclosure it reported an ENERGY STAR score of 84 out of 100 (grade B), a site energy-use intensity of 63.9 kBtu/ft² and 319 tCO₂e of greenhouse-gas emissions. That score is higher than 68% 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 | 84 (band B) |
| Site EUI | 63.9 kBtu/ft² |
| Source EUI | 89.6 kBtu/ft² |
| GHG emissions | 319 tCO₂e |
| GHG intensity | 4.2 kgCO₂e/ft² |
| Electricity | 286,810 kWh |
| Natural gas | 38,795 therms |
| Water use | 4,042 kgal |
| Gross floor area | 76,009 sq ft |
| Source record | nyc:33757206:2024 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2024latest | 84 | +26 | 63.9 kBtu/ft² | 319 tCO₂e |
| 2023 | 58 | 79.9 kBtu/ft² | 375 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
- 6629 BROADWAY
- City
- New York City
- State
- New York
- ZIP
- 10471
- Coordinates
- 40.90918, -73.89660
Within ~1 km
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See also: most efficient in New York City · biggest emitters
How does KASHTAN 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. KASHTAN REALTY LLC's ENERGY STAR score of 84 compares with an average of 63 across the 22,829 that report a score; it scores higher than 68% of them and lower than 30%. Its site EUI of 63.9 kBtu/ft² is about 15% 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 4.2 kgCO₂e/ft² is about 19% below the group average of 5.2 kgCO₂e/ft².
At 76,009 sq ft, it is about 25% below the average floor area of 100,951 sq ft for those buildings. It was built in 1962, 10 years later 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 KASHTAN REALTY LLC's energy performance changed over time?
BuildingCensus holds 2 New York City disclosures for KASHTAN REALTY LLC, covering report years 2023–2024. Its ENERGY STAR score went from 58 in 2023 to 84 in 2024 (+26 points). Site EUI moved from 79.9 kBtu/ft² (2023) to 63.9 kBtu/ft² (2024), a 20% decrease. Reported emissions went from 375 tCO₂e to 319 tCO₂e over the same span (down 15%).
What does an ENERGY STAR score of 84 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 84 means the building performs better than about 84% of its national peers. BuildingCensus bands the score into report-card grades; 84 falls in band B — above median (70–84). 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. KASHTAN REALTY LLC's 63.9 kBtu/ft² across 76,009 sq ft works out to about 4.9 billion Btu (1,423 MWh-equivalent) in 2024. Its source EUI of 89.6 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 286,810 kWh of electricity, 38,795 therms of natural gas and 4,042 thousand gallons of water for the year.
Which law requires KASHTAN REALTY LLC to report its energy use?
KASHTAN 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:33757206:2024). 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
- Spigro Management - 25 Parade Place· 76,000 sq ft · score 81 (B)
- 431 East 136 Street· 76,000 sq ft
- La Casa de Felicidad· 76,000 sq ft · score 60 (C)
- 1990 Ellis Avenue (Parent Property)· 76,000 sq ft · score 37 (D)
- 41-06 Case street· 75,999 sq ft · score 72 (B)
- Pistilli Management - 41-06 Case St· 75,999 sq ft · score 76 (B)
- 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 KASHTAN REALTY LLC's energy grade?
KASHTAN REALTY LLC scores 84 out of 100 on ENERGY STAR — band B, above median (70–84) — in its 2024 New York City disclosure. Scores are national percentiles against similar buildings; 75+ qualifies for ENERGY STAR certification.
How much energy does KASHTAN REALTY LLC use?
Its 2024 site energy-use intensity was 63.9 kBtu/ft² (89.6 kBtu/ft² source) across 76,009 sq ft, including 286,810 kWh of electricity and 38,795 therms of natural gas.
What are KASHTAN REALTY LLC's carbon emissions?
KASHTAN REALTY LLC reported 319 tCO₂e of greenhouse-gas emissions (4.2 kgCO₂e/ft²) for 2024.
Where is KASHTAN REALTY LLC?
KASHTAN REALTY LLC is at 6629 BROADWAY, in New York City, New York 10471. Its coordinates are 40.90918, -73.89660 (latitude, longitude), as published in the Energy and Water Data Disclosure file.
How big is KASHTAN REALTY LLC and when was it built?
KASHTAN REALTY LLC has 76,009 sq ft of gross floor area, as reported in its 2024 disclosure. The disclosure lists 1962 as its year built. It is classed as multifamily housing.
Is KASHTAN 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).
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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, “KASHTAN REALTY LLC, New York City, New York — 2024 benchmarking disclosure”, https://buildingcensus.com/buildings/new-york-city/kashtan-realty-llc-38fcf54e (data as of October 2, 2026).