At a glance
125-135 Congress St is a 45,963-square-foot office building in Boston, Massachusetts. In its 2024 Boston benchmarking disclosure it reported an ENERGY STAR score of 92 out of 100 (grade A), a site energy-use intensity of 41.1 kBtu/ft² and 105 tCO₂e of greenhouse-gas emissions. That score is higher than 85% of the 356 scored office buildings in Boston.
BERDO 2.0 · reporting year 2024
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | 92 (band A) |
| Site EUI | 41.1 kBtu/ft² |
| Source EUI | — |
| GHG emissions | 105 tCO₂e |
| GHG intensity | — |
| Electricity | 373,431 kWh |
| Natural gas | 6,167 therms |
| Gross floor area | 45,963 sq ft |
| Source record | boston:105086:2024 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2024latest | 92 | ±0 | 41.1 kBtu/ft² | 105 tCO₂e |
| 2023 | 92 | -1 | 41.1 kBtu/ft² | 109 tCO₂e |
| 2022 | 93 | 41.3 kBtu/ft² | 131 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
PL FEDERAL PROPERTIES LP MASS LP
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Location
- Address
- 125-135 Congress 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 125-135 Congress St compare with other office buildings in Boston?
The latest disclosures cover 467 office buildings in Boston, out of 6,305 buildings citywide. 125-135 Congress St's ENERGY STAR score of 92 compares with an average of 71 across the 356 that report a score; it scores higher than 85% of them and lower than 13%. Its site EUI of 41.1 kBtu/ft² is about 33% below the average of 61.7 kBtu/ft² — it uses less energy per square foot than the typical building in that group.
At 45,963 sq ft, it is about 76% 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 125-135 Congress St's energy performance changed over time?
BuildingCensus holds 3 Boston disclosures for 125-135 Congress St, covering report years 2022–2024. Its ENERGY STAR score went from 93 in 2022 to 92 in 2024 (-1 points); its best year on file was 2022, at 93. Site EUI moved from 41.3 kBtu/ft² (2022) to 41.1 kBtu/ft² (2024), a 0% decrease. Reported emissions went from 131 tCO₂e to 105 tCO₂e over the same span (down 20%).
What does an ENERGY STAR score of 92 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 92 means the building performs better than about 92% of its national peers. BuildingCensus bands the score into report-card grades; 92 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. 125-135 Congress St's 41.1 kBtu/ft² across 45,963 sq ft works out to about 1.9 billion Btu (554 MWh-equivalent) in 2024. The disclosure also reports 373,431 kWh of electricity and 6,167 therms of natural gas for the year.
Which law requires 125-135 Congress St to report its energy use?
125-135 Congress 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:105086:2024). 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
- 251A-261 Huntington Ave· 44,900 sq ft · score 23 (D)
- 2 Park Plz· 44,800 sq ft · score 94 (A)
- 370 Columbia Rd· 44,750 sq ft · score 9 (D)
- 322-328 Washington St· 44,464 sq ft · EUI 79.7 kBtu/ft²
- 12 Park St· 44,000 sq ft · score 45 (D)
- 425 Harvard St· 44,000 sq ft · score 24 (D)
- 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 125-135 Congress St's energy grade?
125-135 Congress St scores 92 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 125-135 Congress St use?
Its 2024 site energy-use intensity was 41.1 kBtu/ft² across 45,963 sq ft, including 373,431 kWh of electricity and 6,167 therms of natural gas.
What are 125-135 Congress St's carbon emissions?
125-135 Congress St reported 105 tCO₂e of greenhouse-gas emissions for 2024.
Where is 125-135 Congress St?
125-135 Congress St is in Boston, Massachusetts 2110.
How big is 125-135 Congress St and when was it built?
125-135 Congress St has 45,963 sq ft of gross floor area, as reported in its 2024 disclosure. It is classed as office.
Is 125-135 Congress 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, “125-135 Congress St, Boston, Massachusetts — 2024 benchmarking disclosure”, https://buildingcensus.com/buildings/boston/125-135-congress-st-ed37abab (data as of July 9, 2026).