At a glance
643 653 Summer St is a 767,210-square-foot office building in Boston, Massachusetts. In its 2023 Boston benchmarking disclosure it reported a site energy-use intensity of 67.1 kBtu/ft² and 2,892 tCO₂e of greenhouse-gas emissions.
BERDO 2.0 · reporting year 2023
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | — |
| Site EUI | 67.1 kBtu/ft² |
| Source EUI | — |
| GHG emissions | 2,892 tCO₂e |
| GHG intensity | — |
| Electricity | 6,666,833 kWh |
| Natural gas | 287,025 therms |
| Gross floor area | 767,210 sq ft |
| Source record | boston:104943:2023 |
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
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Location
- Address
- 643 653 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 643 653 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 67.1 kBtu/ft² is roughly in line with the average of 61.7 kBtu/ft².
At 767,210 sq ft, it is about 300% above 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.
What does a site EUI of 67.1 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. 643 653 Summer St's 67.1 kBtu/ft² across 767,210 sq ft works out to about 51.5 billion Btu (15,087 MWh-equivalent) in 2023. The disclosure also reports 6,666,833 kWh of electricity and 287,025 therms of natural gas for the year.
Which law requires 643 653 Summer St to report its energy use?
643 653 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 2023 disclosure (source record boston:104943:2023). 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
- 500 Boylston St· 761,594 sq ft · score 78 (B)
- 157 Berkeley St· 757,241 sq ft · score 98 (A)
- 3 Center Plz· 741,231 sq ft · score 75 (B)
- 99 High St· 731,205 sq ft · score 80 (B)
- Office building #106041· 682,117 sq ft · score 89 (A)
- 28 State St· 656,894 sq ft · score 76 (B)
- 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 643 653 Summer St's energy grade?
643 653 Summer St did not report an ENERGY STAR score in its 2023 disclosure, but its site energy-use intensity was 67.1 kBtu/ft².
How much energy does 643 653 Summer St use?
Its 2023 site energy-use intensity was 67.1 kBtu/ft² across 767,210 sq ft, including 6,666,833 kWh of electricity and 287,025 therms of natural gas.
What are 643 653 Summer St's carbon emissions?
643 653 Summer St reported 2,892 tCO₂e of greenhouse-gas emissions for 2023.
Where is 643 653 Summer St?
643 653 Summer St is in Boston, Massachusetts 2127.
How big is 643 653 Summer St and when was it built?
643 653 Summer St has 767,210 sq ft of gross floor area, as reported in its 2023 disclosure. It is classed as office.
Is 643 653 Summer St covered by BERDO 2.0?
Yes — it appears in the 2023 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, “643 653 Summer St, Boston, Massachusetts — 2023 benchmarking disclosure”, https://buildingcensus.com/buildings/boston/643-653-summer-st-f17b624d (data as of July 9, 2026).