340-350 Longwood Ave
Multifamily Housing in Boston, MA · 2115.
At a glance
340-350 Longwood Ave is a 214,678-square-foot multifamily housing building in Boston, Massachusetts. In its 2024 Boston benchmarking disclosure it reported a site energy-use intensity of 154.6 kBtu/ft² and 1,960 tCO₂e of greenhouse-gas emissions.
BERDO 2.0 · reporting year 2024
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | — |
| Site EUI | 154.6 kBtu/ft² |
| Source EUI | — |
| GHG emissions | 1,960 tCO₂e |
| GHG intensity | — |
| Electricity | 7,238,454 kWh |
| Natural gas | 9,429 therms |
| Gross floor area | 214,678 sq ft |
| Source record | boston:104643:2024 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2024latest | — | 154.6 kBtu/ft² | 1,960 tCO₂e | |
| 2023 | — | 149.7 kBtu/ft² | 1,969 tCO₂e | |
| 2022 | — | 155.8 kBtu/ft² | 459 tCO₂e |
Compliance context
BERDO 2.0
BERDO 2.0 sets emissions standards for buildings of 20,000+ sq ft or 15+ units, starting in 2025 or 2030 depending on building size, with an alternative-compliance payment of $234 per metric ton of CO₂e over the limit.
Ownership
NEWTON PLACE ASSOCIATES I LLC
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Location
- Address
- 340-350 Longwood Ave
- City
- Boston
- State
- Massachusetts
- ZIP
- 2115.
Within ~1 km
Nearby benchmarked buildings
This source publishes no coordinates, so nearby buildings can't be resolved yet.
See also: most efficient in Boston · biggest emitters
How does 340-350 Longwood Ave compare with other multifamily housing buildings in Boston?
The latest disclosures cover 2,174 multifamily housing buildings in Boston, out of 6,305 buildings citywide. Its site EUI of 154.6 kBtu/ft² is about 128% above the average of 67.7 kBtu/ft² — it uses more energy per square foot than the typical building in that group.
At 214,678 sq ft, it is about 270% above the average floor area of 58,087 sq ft for those buildings. 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 340-350 Longwood Ave's energy performance changed over time?
BuildingCensus holds 3 Boston disclosures for 340-350 Longwood Ave, covering report years 2022–2024. Site EUI moved from 155.8 kBtu/ft² (2022) to 154.6 kBtu/ft² (2024), a 1% decrease. Reported emissions went from 459 tCO₂e to 1,960 tCO₂e over the same span (up 327%).
What does a site EUI of 154.6 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. 340-350 Longwood Ave's 154.6 kBtu/ft² across 214,678 sq ft works out to about 33.2 billion Btu (9,727 MWh-equivalent) in 2024. The disclosure also reports 7,238,454 kWh of electricity and 9,429 therms of natural gas for the year.
Which law requires 340-350 Longwood Ave to report its energy use?
340-350 Longwood Ave reports under BERDO 2.0, the legal basis of Boston's Building Emissions Reduction and Disclosure Ordinance, which publishes each covered building's annual benchmarking results. The record shown here is the report-year 2024 disclosure (source record boston:104643:2024). BERDO 2.0 sets emissions standards for buildings of 20,000+ sq ft or 15+ units, starting in 2025 or 2030 depending on building size, with an alternative-compliance payment of $234 per metric ton of CO₂e over the limit.
More multifamily housing buildings in Boston
- 40 Wallingford Rd· 213,360 sq ft · score 47 (D)
- 180 Beacon St· 210,000 sq ft · score 93 (A)
- 646-656 Huntington Ave· 210,000 sq ft · score 73 (B)
- 139 Washington St· 209,747 sq ft · score 97 (A)
- 136 Brookline Ave· 209,443 sq ft · score 93 (A)
- Multifamily Housing building #106375· 207,133 sq ft · score 2 (D)
- Multifamily Housing buildings in Boston· 2,174 benchmarked
- All Boston benchmarked buildings· BERDO 2.0
- Most efficient large buildings in Boston
- Least efficient large buildings in Boston
- Biggest emitters in Boston
Frequently asked questions
What is 340-350 Longwood Ave's energy grade?
340-350 Longwood Ave did not report an ENERGY STAR score in its 2024 disclosure, but its site energy-use intensity was 154.6 kBtu/ft².
How much energy does 340-350 Longwood Ave use?
Its 2024 site energy-use intensity was 154.6 kBtu/ft² across 214,678 sq ft, including 7,238,454 kWh of electricity and 9,429 therms of natural gas.
What are 340-350 Longwood Ave's carbon emissions?
340-350 Longwood Ave reported 1,960 tCO₂e of greenhouse-gas emissions for 2024.
Where is 340-350 Longwood Ave?
340-350 Longwood Ave is in Boston, Massachusetts 2115.
How big is 340-350 Longwood Ave and when was it built?
340-350 Longwood Ave has 214,678 sq ft of gross floor area, as reported in its 2024 disclosure. It is classed as multifamily housing.
Is 340-350 Longwood Ave covered by BERDO 2.0?
Yes — it appears in the 2024 Building Emissions Reduction and Disclosure Ordinance disclosure, which lists the buildings reporting under BERDO 2.0.
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About this data
Source: Building Emissions Reduction and Disclosure Ordinance (BERDO 2.0), as published July 9, 2026. See the methodology for how records are matched, cleaned and scored.
Cite as: BuildingCensus, “340-350 Longwood Ave, Boston, Massachusetts — 2024 benchmarking disclosure”, https://buildingcensus.com/buildings/boston/340-350-longwood-ave-b4195b7e (data as of July 9, 2026).