921 MONTGOMERY ST
Multifamily Housing in New York City, NY · 921 Montgomery Street · 11213
At a glance
921 MONTGOMERY ST is a 88,244-square-foot multifamily housing building at 921 Montgomery Street in New York City, New York, built in 1927. In its 2024 New York City benchmarking disclosure it reported an ENERGY STAR score of 74 out of 100 (grade B), a site energy-use intensity of 77.9 kBtu/ft² and 439 tCO₂e of greenhouse-gas emissions. That score is higher than 56% 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 | 74 (band B) |
| Site EUI | 77.9 kBtu/ft² |
| Source EUI | 103.4 kBtu/ft² |
| GHG emissions | 439 tCO₂e |
| GHG intensity | 5.0 kgCO₂e/ft² |
| Electricity | 321,380 kWh |
| Natural gas | 55,031 therms |
| Water use | 8,336 kgal |
| Gross floor area | 88,244 sq ft |
| Source record | nyc:3072441:2024 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2024latest | 74 | +3 | 77.9 kBtu/ft² | 439 tCO₂e |
| 2023 | 71 | +10 | 77.4 kBtu/ft² | 433 tCO₂e |
| 2022 | 61 | 90.7 kBtu/ft² | 469 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
- 921 Montgomery Street
- City
- New York City
- State
- New York
- ZIP
- 11213
- Coordinates
- 40.66448, -73.93389
Within ~1 km
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See also: most efficient in New York City · biggest emitters
How does 921 MONTGOMERY ST 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. 921 MONTGOMERY ST's ENERGY STAR score of 74 compares with an average of 63 across the 22,829 that report a score; it scores higher than 56% of them and lower than 43%. Its site EUI of 77.9 kBtu/ft² is roughly in line with the average of 74.9 kBtu/ft². Its emissions intensity of 5.0 kgCO₂e/ft² is roughly in line with the group average of 5.2 kgCO₂e/ft².
At 88,244 sq ft, it is about 13% below the average floor area of 100,951 sq ft for those buildings. It was built in 1927, 25 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 921 MONTGOMERY ST's energy performance changed over time?
BuildingCensus holds 3 New York City disclosures for 921 MONTGOMERY ST, covering report years 2022–2024. Its ENERGY STAR score went from 61 in 2022 to 74 in 2024 (+13 points). Site EUI moved from 90.7 kBtu/ft² (2022) to 77.9 kBtu/ft² (2024), a 14% decrease. Reported emissions went from 469 tCO₂e to 439 tCO₂e over the same span (down 6%).
What does an ENERGY STAR score of 74 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 74 means the building performs better than about 74% of its national peers. BuildingCensus bands the score into report-card grades; 74 falls in band B — above median (70–84). It sits 1 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. 921 MONTGOMERY ST's 77.9 kBtu/ft² across 88,244 sq ft works out to about 6.9 billion Btu (2,015 MWh-equivalent) in 2024. Its source EUI of 103.4 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 321,380 kWh of electricity, 55,031 therms of natural gas and 8,336 thousand gallons of water for the year.
Which law requires 921 MONTGOMERY ST to report its energy use?
921 MONTGOMERY ST 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:3072441:2024). 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
- 229 West 97th Street· 88,242 sq ft · score 42 (D)
- 170 Hawthorne Street· 88,237 sq ft · score 100 (A)
- Cornerstone - 170 Hawthorne Street· 88,237 sq ft · score 100 (A)
- R.F. Stuart: 230 East 79th Street· 88,231 sq ft · score 14 (D)
- 130 Barrow Street Condominium· 88,227 sq ft · score 55 (C)
- 1765 Townsend Avenue· 88,227 sq ft · score 30 (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 921 MONTGOMERY ST's energy grade?
921 MONTGOMERY ST scores 74 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 921 MONTGOMERY ST use?
Its 2024 site energy-use intensity was 77.9 kBtu/ft² (103.4 kBtu/ft² source) across 88,244 sq ft, including 321,380 kWh of electricity and 55,031 therms of natural gas.
What are 921 MONTGOMERY ST's carbon emissions?
921 MONTGOMERY ST reported 439 tCO₂e of greenhouse-gas emissions (5.0 kgCO₂e/ft²) for 2024.
Where is 921 MONTGOMERY ST?
921 MONTGOMERY ST is at 921 Montgomery Street, in New York City, New York 11213. Its coordinates are 40.66448, -73.93389 (latitude, longitude), as published in the Energy and Water Data Disclosure file.
How big is 921 MONTGOMERY ST and when was it built?
921 MONTGOMERY ST has 88,244 sq ft of gross floor area, as reported in its 2024 disclosure. The disclosure lists 1927 as its year built. It is classed as multifamily housing.
Is 921 MONTGOMERY ST 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, “921 MONTGOMERY ST, New York City, New York — 2024 benchmarking disclosure”, https://buildingcensus.com/buildings/new-york-city/921-montgomery-st-a90b3530 (data as of October 2, 2026).