327B Realty: 347 Walnut (child)
Self-Storage Facility in New York City, NY · 347 Walnut Ave · 10454
At a glance
327B Realty: 347 Walnut (child) is a 56,282-square-foot self-storage facility at 347 Walnut Ave in New York City, New York, built in 1919. In its 2023 New York City benchmarking disclosure it reported a site energy-use intensity of 10.8 kBtu/ft² and 56 tCO₂e of greenhouse-gas emissions.
Local Law 84 (LL84) · reporting year 2023
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | — |
| Site EUI | 10.8 kBtu/ft² |
| Source EUI | 24.8 kBtu/ft² |
| GHG emissions | 56 tCO₂e |
| GHG intensity | 1.0 kgCO₂e/ft² |
| Electricity | 126,826 kWh |
| Natural gas | 1,755 therms |
| Water use | 660 kgal |
| Gross floor area | 56,282 sq ft |
| Source record | nyc:3118079:2023 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2023latest | — | 10.8 kBtu/ft² | 56 tCO₂e | |
| 2022 | — | 13.7 kBtu/ft² | 58 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
- 347 Walnut Ave
- City
- New York City
- State
- New York
- ZIP
- 10454
- Coordinates
- 40.80486, -73.90640
Within ~1 km
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See also: most efficient in New York City · biggest emitters
How does 327B Realty: 347 Walnut (child) compare with other self-storage facility buildings in New York City?
The latest disclosures cover 481 self-storage facility buildings in New York City, out of 48,310 buildings citywide. Its site EUI of 10.8 kBtu/ft² is about half of the average of 21.2 kBtu/ft² — it uses less energy per square foot than the typical building in that group. Its emissions intensity of 1.0 kgCO₂e/ft² is about 41% below the group average of 1.7 kgCO₂e/ft².
At 56,282 sq ft, it is about 43% below the average floor area of 98,872 sq ft for those buildings. It was built in 1919, 64 years earlier than the group's average year built (1983). Across all 24 jurisdictions BuildingCensus covers, the 3,050 self-storage facility buildings average an ENERGY STAR score of 75 and a site EUI of 9.4 kBtu/ft².
How has 327B Realty: 347 Walnut (child)'s energy performance changed over time?
BuildingCensus holds 2 New York City disclosures for 327B Realty: 347 Walnut (child), covering report years 2022–2023. Site EUI moved from 13.7 kBtu/ft² (2022) to 10.8 kBtu/ft² (2023), a 21% decrease. Reported emissions went from 58 tCO₂e to 56 tCO₂e over the same span (down 3%).
What does a site EUI of 10.8 kBtu/ft² mean?
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. 327B Realty: 347 Walnut (child)'s 10.8 kBtu/ft² across 56,282 sq ft works out to about 0.6 billion Btu (178 MWh-equivalent) in 2023. Its source EUI of 24.8 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 126,826 kWh of electricity, 1,755 therms of natural gas and 660 thousand gallons of water for the year.
Which law requires 327B Realty: 347 Walnut (child) to report its energy use?
327B Realty: 347 Walnut (child) 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 2023 disclosure (source record nyc:3118079:2023). 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 self-storage facility buildings in New York City
- 301 West Fordham Road· 56,041 sq ft · EUI 90.4 kBtu/ft²
- 3734-McDonald Ave-Brooklyn· 55,933 sq ft · EUI 8.8 kBtu/ft²
- CubeSmart (NYC) - 836 2nd Property - DO NOT USE· 55,884 sq ft · EUI 14.4 kBtu/ft²
- 892 Atlantic Ave· 55,884 sq ft · EUI 13.7 kBtu/ft²
- 1635 Albany Avenue· 55,512 sq ft · EUI 5.9 kBtu/ft²
- 190110 Utica· 55,000 sq ft · EUI 3.5 kBtu/ft²
- Self-Storage Facility buildings in New York City· 481 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 327B Realty: 347 Walnut (child)'s energy grade?
327B Realty: 347 Walnut (child) did not report an ENERGY STAR score in its 2023 disclosure, but its site energy-use intensity was 10.8 kBtu/ft².
How much energy does 327B Realty: 347 Walnut (child) use?
Its 2023 site energy-use intensity was 10.8 kBtu/ft² (24.8 kBtu/ft² source) across 56,282 sq ft, including 126,826 kWh of electricity and 1,755 therms of natural gas.
What are 327B Realty: 347 Walnut (child)'s carbon emissions?
327B Realty: 347 Walnut (child) reported 56 tCO₂e of greenhouse-gas emissions (1.0 kgCO₂e/ft²) for 2023.
Where is 327B Realty: 347 Walnut (child)?
327B Realty: 347 Walnut (child) is at 347 Walnut Ave, in New York City, New York 10454. Its coordinates are 40.80486, -73.90640 (latitude, longitude), as published in the Energy and Water Data Disclosure file.
How big is 327B Realty: 347 Walnut (child) and when was it built?
327B Realty: 347 Walnut (child) has 56,282 sq ft of gross floor area, as reported in its 2023 disclosure. The disclosure lists 1919 as its year built. It is classed as self-storage facility.
Is 327B Realty: 347 Walnut (child) covered by Local Law 84 (LL84)?
Yes — it appears in the 2023 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, “327B Realty: 347 Walnut (child), New York City, New York — 2023 benchmarking disclosure”, https://buildingcensus.com/buildings/new-york-city/327b-realty-347-walnut-child-48203d70 (data as of October 2, 2026).