A02320 - 345 Montgomery Street Owners Corp.
Multifamily Housing in New York City, NY · 345 Montgomery Street · 11225
At a glance
A02320 - 345 Montgomery Street Owners Corp. is a 105,675-square-foot multifamily housing building in New York City, New York, built in 1928. In its 2024 New York City benchmarking disclosure it reported an ENERGY STAR score of 100 out of 100 (grade A), a site energy-use intensity of 23.2 kBtu/ft² and 232 tCO₂e of greenhouse-gas emissions. That score is higher than 90% 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 | 100 (band A) |
| Site EUI | 23.2 kBtu/ft² |
| Source EUI | 44.1 kBtu/ft² |
| GHG emissions | 232 tCO₂e |
| GHG intensity | 2.2 kgCO₂e/ft² |
| Electricity | 357,636 kWh |
| Water use | 3,520 kgal |
| Gross floor area | 105,675 sq ft |
| Source record | nyc:6288754:2024 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2024latest | 100 | ±0 | 23.2 kBtu/ft² | 232 tCO₂e |
| 2023 | 100 | 23.0 kBtu/ft² | 223 tCO₂e | |
| 2022 | — | — | — |
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
- 345 Montgomery Street
- City
- New York City
- State
- New York
- ZIP
- 11225
- Coordinates
- 40.66553, -73.95317
Within ~1 km
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How does A02320 - 345 Montgomery Street Owners Corp. 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. A02320 - 345 Montgomery Street Owners Corp.'s ENERGY STAR score of 100 compares with an average of 63 across the 22,829 that report a score; it scores higher than 90% of them. Its site EUI of 23.2 kBtu/ft² is about 69% 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 2.2 kgCO₂e/ft² is about 58% below the group average of 5.2 kgCO₂e/ft².
At 105,675 sq ft, it is roughly in line with the average floor area of 100,951 sq ft for those buildings. It was built in 1928, 24 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 A02320 - 345 Montgomery Street Owners Corp.'s energy performance changed over time?
BuildingCensus holds 3 New York City disclosures for A02320 - 345 Montgomery Street Owners Corp., covering report years 2022–2024. Its ENERGY STAR score was 100 in both 2023 and 2024. Site EUI moved from 23.0 kBtu/ft² (2023) to 23.2 kBtu/ft² (2024), an 1% increase. Reported emissions went from 223 tCO₂e to 232 tCO₂e over the same span (up 4%).
What does an ENERGY STAR score of 100 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: 100 is the top of the scale. BuildingCensus bands the score into report-card grades; 100 falls in band A — high performer (85–100). 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. A02320 - 345 Montgomery Street Owners Corp.'s 23.2 kBtu/ft² across 105,675 sq ft works out to about 2.5 billion Btu (719 MWh-equivalent) in 2024. Its source EUI of 44.1 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 357,636 kWh of electricity and 3,520 thousand gallons of water for the year.
Which law requires A02320 - 345 Montgomery Street Owners Corp. to report its energy use?
A02320 - 345 Montgomery Street Owners Corp. 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:6288754:2024). 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
- Beach Haven Group: 2676 W 3rd St· 105,673 sq ft · score 98 (A)
- Beach Haven Group: 63 Bokee Ct· 105,673 sq ft · score 98 (A)
- AKAM - 87-40 Francis Lewis Boulevard - CHILD· 105,665 sq ft
- 1710 Carroll Street· 105,654 sq ft · score 47 (D)
- 36-20 Bowne Street· 105,632 sq ft · score 85 (A)
- AKAM - 35 West 92nd Street· 105,625 sq ft · score 81 (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 A02320 - 345 Montgomery Street Owners Corp.'s energy grade?
A02320 - 345 Montgomery Street Owners Corp. scores 100 out of 100 on ENERGY STAR — band A, high performer (85–100) — in its 2024 New York City disclosure. Scores are national percentiles against similar buildings; 75+ qualifies for ENERGY STAR certification.
How much energy does A02320 - 345 Montgomery Street Owners Corp. use?
Its 2024 site energy-use intensity was 23.2 kBtu/ft² (44.1 kBtu/ft² source) across 105,675 sq ft, including 357,636 kWh of electricity.
What are A02320 - 345 Montgomery Street Owners Corp.'s carbon emissions?
A02320 - 345 Montgomery Street Owners Corp. reported 232 tCO₂e of greenhouse-gas emissions (2.2 kgCO₂e/ft²) for 2024.
Where is A02320 - 345 Montgomery Street Owners Corp.?
A02320 - 345 Montgomery Street Owners Corp. is in New York City, New York 11225. Its coordinates are 40.66553, -73.95317 (latitude, longitude), as published in the Energy and Water Data Disclosure file.
How big is A02320 - 345 Montgomery Street Owners Corp. and when was it built?
A02320 - 345 Montgomery Street Owners Corp. has 105,675 sq ft of gross floor area, as reported in its 2024 disclosure. The disclosure lists 1928 as its year built. It is classed as multifamily housing.
Is A02320 - 345 Montgomery Street Owners Corp. 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, “A02320 - 345 Montgomery Street Owners Corp., New York City, New York — 2024 benchmarking disclosure”, https://buildingcensus.com/buildings/new-york-city/a02320-345-montgomery-street-owners-corp-d6402fd5 (data as of October 2, 2026).