At a glance
311-319 Summer St is a 63,937-square-foot office building in Boston, Massachusetts. In its 2024 Boston benchmarking disclosure it reported a site energy-use intensity of 29.7 kBtu/ft² and 105 tCO₂e of greenhouse-gas emissions.
BERDO 2.0 · reporting year 2024
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | — |
| Site EUI | 29.7 kBtu/ft² |
| Source EUI | — |
| GHG emissions | 105 tCO₂e |
| GHG intensity | — |
| Electricity | 352,377 kWh |
| Natural gas | 6,943 therms |
| Gross floor area | 63,937 sq ft |
| Source record | boston:100116:2024 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2024latest | — | 29.7 kBtu/ft² | 105 tCO₂e | |
| 2023 | 84 | +38 | 33.7 kBtu/ft² | 124 tCO₂e |
| 2022 | 46 | 55.9 kBtu/ft² | 229 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
311 SUMNER AVENUE INC
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Location
- Address
- 311-319 Summer St
- City
- Boston
- State
- Massachusetts
- ZIP
- 2127.
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 311-319 Summer St compare with other office buildings in Boston?
The latest disclosures cover 467 office buildings in Boston, out of 6,305 buildings citywide. Its site EUI of 29.7 kBtu/ft² is about half of the average of 61.7 kBtu/ft² — it uses less energy per square foot than the typical building in that group.
At 63,937 sq ft, it is about 67% below the average floor area of 191,803 sq ft for those buildings. Across all 24 jurisdictions BuildingCensus covers, the 15,264 office buildings average an ENERGY STAR score of 73 and a site EUI of 59.3 kBtu/ft².
How has 311-319 Summer St's energy performance changed over time?
BuildingCensus holds 3 Boston disclosures for 311-319 Summer St, covering report years 2022–2024. Its ENERGY STAR score went from 46 in 2022 to 84 in 2023 (+38 points). Site EUI moved from 55.9 kBtu/ft² (2022) to 29.7 kBtu/ft² (2024), a 47% decrease. Reported emissions went from 229 tCO₂e to 105 tCO₂e over the same span (down 54%).
What does a site EUI of 29.7 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. 311-319 Summer St's 29.7 kBtu/ft² across 63,937 sq ft works out to about 1.9 billion Btu (557 MWh-equivalent) in 2024. The disclosure also reports 352,377 kWh of electricity and 6,943 therms of natural gas for the year.
Which law requires 311-319 Summer St to report its energy use?
311-319 Summer St 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:100116:2024). 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 office buildings in Boston
- 178-179 Tremont St· 63,096 sq ft · score 73 (B)
- 647B Summer St· 63,000 sq ft
- 50 Franklin St· 62,285 sq ft · score 90 (A)
- 75-79 Summer St· 62,246 sq ft · score 34 (D)
- 1-3 Province St· 60,446 sq ft · score 80 (B)
- 7-13 Elkins St· 60,000 sq ft · score 85 (A)
- Office buildings in Boston· 467 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 311-319 Summer St's energy grade?
311-319 Summer St did not report an ENERGY STAR score in its 2024 disclosure, but its site energy-use intensity was 29.7 kBtu/ft².
How much energy does 311-319 Summer St use?
Its 2024 site energy-use intensity was 29.7 kBtu/ft² across 63,937 sq ft, including 352,377 kWh of electricity and 6,943 therms of natural gas.
What are 311-319 Summer St's carbon emissions?
311-319 Summer St reported 105 tCO₂e of greenhouse-gas emissions for 2024.
Where is 311-319 Summer St?
311-319 Summer St is in Boston, Massachusetts 2127.
How big is 311-319 Summer St and when was it built?
311-319 Summer St has 63,937 sq ft of gross floor area, as reported in its 2024 disclosure. It is classed as office.
Is 311-319 Summer St 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, “311-319 Summer St, Boston, Massachusetts — 2024 benchmarking disclosure”, https://buildingcensus.com/buildings/boston/311-319-summer-st-25d37d12 (data as of July 9, 2026).