At a glance
50 Franklin St is a 62,285-square-foot office building in Boston, Massachusetts. In its 2024 Boston benchmarking disclosure it reported an ENERGY STAR score of 90 out of 100 (grade A), a site energy-use intensity of 39.6 kBtu/ft² and 135 tCO₂e of greenhouse-gas emissions. That score is higher than 82% of the 356 scored office buildings in Boston.
BERDO 2.0 · reporting year 2024
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | 90 (band A) |
| Site EUI | 39.6 kBtu/ft² |
| Source EUI | — |
| GHG emissions | 135 tCO₂e |
| GHG intensity | — |
| Electricity | 272,734 kWh |
| Natural gas | 15,370 therms |
| Gross floor area | 62,285 sq ft |
| Source record | boston:108162:2024 |
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
Fifty Franklin ST CONDO TR
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Location
- Address
- 50 Franklin St
- City
- Boston
- State
- Massachusetts
- ZIP
- 2110.
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 50 Franklin St compare with other office buildings in Boston?
The latest disclosures cover 467 office buildings in Boston, out of 6,305 buildings citywide. 50 Franklin St's ENERGY STAR score of 90 compares with an average of 71 across the 356 that report a score; it scores higher than 82% of them and lower than 17%. Its site EUI of 39.6 kBtu/ft² is about 36% below the average of 61.7 kBtu/ft² — it uses less energy per square foot than the typical building in that group.
At 62,285 sq ft, it is about 68% 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.
What does an ENERGY STAR score of 90 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: a score of 90 means the building performs better than about 90% of its national peers. BuildingCensus bands the score into report-card grades; 90 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 Boston, 52% 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. 50 Franklin St's 39.6 kBtu/ft² across 62,285 sq ft works out to about 2.5 billion Btu (723 MWh-equivalent) in 2024. The disclosure also reports 272,734 kWh of electricity and 15,370 therms of natural gas for the year.
Which law requires 50 Franklin St to report its energy use?
50 Franklin 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:108162:2024). 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
- 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)
- 217-231 Friend St· 60,000 sq ft · score 88 (A)
- 417-423C W Broadway· 59,915 sq ft · score 93 (A)
- 642 Beacon St· 58,275 sq ft · score 82 (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 50 Franklin St's energy grade?
50 Franklin St scores 90 out of 100 on ENERGY STAR — band A, high performer (85–100) — in its 2024 Boston disclosure. Scores are national percentiles against similar buildings; 75+ qualifies for ENERGY STAR certification.
How much energy does 50 Franklin St use?
Its 2024 site energy-use intensity was 39.6 kBtu/ft² across 62,285 sq ft, including 272,734 kWh of electricity and 15,370 therms of natural gas.
What are 50 Franklin St's carbon emissions?
50 Franklin St reported 135 tCO₂e of greenhouse-gas emissions for 2024.
Where is 50 Franklin St?
50 Franklin St is in Boston, Massachusetts 2110.
How big is 50 Franklin St and when was it built?
50 Franklin St has 62,285 sq ft of gross floor area, as reported in its 2024 disclosure. It is classed as office.
Is 50 Franklin 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, “50 Franklin St, Boston, Massachusetts — 2024 benchmarking disclosure”, https://buildingcensus.com/buildings/boston/50-franklin-st-523b4b56 (data as of July 9, 2026).