At a glance
345 Old Colony Ave is a 2,025-square-foot office building in Boston, Massachusetts. In its 2024 Boston benchmarking disclosure it reported an ENERGY STAR score of 26 out of 100 (grade D), a site energy-use intensity of 130.5 kBtu/ft² and 14 tCO₂e of greenhouse-gas emissions. That score is higher than 5% of the 356 scored office buildings in Boston.
BERDO 2.0 · reporting year 2024
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | 26 (band D) |
| Site EUI | 130.5 kBtu/ft² |
| Source EUI | — |
| GHG emissions | 14 tCO₂e |
| GHG intensity | — |
| Electricity | 16,795 kWh |
| Natural gas | 2,069 therms |
| Gross floor area | 2,025 sq ft |
| Source record | boston:100889:2024 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2024latest | 26 | 130.5 kBtu/ft² | 14 tCO₂e | |
| 2023 | — | 359.9 kBtu/ft² | 39 tCO₂e | |
| 2022 | — | — | — |
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
BOSTON HOUSING AUTHORITY
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Location
- Address
- 345 Old Colony Ave
- 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 345 Old Colony Ave compare with other office buildings in Boston?
The latest disclosures cover 467 office buildings in Boston, out of 6,305 buildings citywide. 345 Old Colony Ave's ENERGY STAR score of 26 compares with an average of 71 across the 356 that report a score; it scores higher than 5% of them and lower than 94%. Its site EUI of 130.5 kBtu/ft² is about twice the average of 61.7 kBtu/ft² — it uses more energy per square foot than the typical building in that group.
At 2,025 sq ft, it is about 99% 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 345 Old Colony Ave's energy performance changed over time?
BuildingCensus holds 3 Boston disclosures for 345 Old Colony Ave, covering report years 2022–2024. Site EUI moved from 359.9 kBtu/ft² (2023) to 130.5 kBtu/ft² (2024), a 64% decrease. Reported emissions went from 39 tCO₂e to 14 tCO₂e over the same span (down 63%).
What does an ENERGY STAR score of 26 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 26 means the building performs better than about 26% of its national peers. BuildingCensus bands the score into report-card grades; 26 falls in band D — lowest band (1–54). It sits 49 points below 75, the threshold for ENERGY STAR certification. 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. 345 Old Colony Ave's 130.5 kBtu/ft² across 2,025 sq ft works out to about 0.3 billion Btu (77 MWh-equivalent) in 2024. The disclosure also reports 16,795 kWh of electricity and 2,069 therms of natural gas for the year.
Which law requires 345 Old Colony Ave to report its energy use?
345 Old Colony 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:100889:2024). 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
- 2060 Commonwealth Av· 2,000 sq ft · score 76 (B)
- 125 South Street· 1,560 sq ft · score 34 (D)
- 15 Dr. Mary Moore Beatty Cir· 1,540 sq ft · score 33 (D)
- 5-Ranger Office· 1,351 sq ft · score 1 (D)
- Moon Island Training Campus_#6 Two Story Building· 1,264 sq ft · EUI 30.6 kBtu/ft²
- 101 Davison St· 1,225 sq ft · score 14 (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 345 Old Colony Ave's energy grade?
345 Old Colony Ave scores 26 out of 100 on ENERGY STAR — band D, lowest band (1–54) — in its 2024 Boston disclosure. Scores are national percentiles against similar buildings; 75+ qualifies for ENERGY STAR certification.
How much energy does 345 Old Colony Ave use?
Its 2024 site energy-use intensity was 130.5 kBtu/ft² across 2,025 sq ft, including 16,795 kWh of electricity and 2,069 therms of natural gas.
What are 345 Old Colony Ave's carbon emissions?
345 Old Colony Ave reported 14 tCO₂e of greenhouse-gas emissions for 2024.
Where is 345 Old Colony Ave?
345 Old Colony Ave is in Boston, Massachusetts 2127.
How big is 345 Old Colony Ave and when was it built?
345 Old Colony Ave has 2,025 sq ft of gross floor area, as reported in its 2024 disclosure. It is classed as office.
Is 345 Old Colony 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, “345 Old Colony Ave, Boston, Massachusetts — 2024 benchmarking disclosure”, https://buildingcensus.com/buildings/boston/345-old-colony-ave-34e29970 (data as of July 9, 2026).