At a glance
315 Western Av is a 7,316-square-foot office building in Boston, Massachusetts. In its 2024 Boston benchmarking disclosure it reported an ENERGY STAR score of 82 out of 100 (grade B), a site energy-use intensity of 49.0 kBtu/ft² and 25 tCO₂e of greenhouse-gas emissions. That score is higher than 64% of the 356 scored office buildings in Boston.
BERDO 2.0 · reporting year 2024
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | 82 (band B) |
| Site EUI | 49.0 kBtu/ft² |
| Source EUI | — |
| GHG emissions | 25 tCO₂e |
| GHG intensity | — |
| Electricity | 22,288 kWh |
| Gross floor area | 7,316 sq ft |
| Source record | boston:106955:2024 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2024latest | 82 | -2 | 49.0 kBtu/ft² | 25 tCO₂e |
| 2023 | 84 | +7 | 50.7 kBtu/ft² | 27 tCO₂e |
| 2022 | 77 | 58.5 kBtu/ft² | 32 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
CITY OF BOSTON
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Location
- Address
- 315 Western Av
- City
- Boston
- State
- Massachusetts
- ZIP
- 2134.
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 315 Western Av compare with other office buildings in Boston?
The latest disclosures cover 467 office buildings in Boston, out of 6,305 buildings citywide. 315 Western Av's ENERGY STAR score of 82 compares with an average of 71 across the 356 that report a score; it scores higher than 64% of them and lower than 33%. Its site EUI of 49.0 kBtu/ft² is about 21% below the average of 61.7 kBtu/ft² — it uses less energy per square foot than the typical building in that group.
At 7,316 sq ft, it is about 96% 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 315 Western Av's energy performance changed over time?
BuildingCensus holds 3 Boston disclosures for 315 Western Av, covering report years 2022–2024. Its ENERGY STAR score went from 77 in 2022 to 82 in 2024 (+5 points); its best year on file was 2023, at 84. Site EUI moved from 58.5 kBtu/ft² (2022) to 49.0 kBtu/ft² (2024), a 16% decrease. Reported emissions went from 32 tCO₂e to 25 tCO₂e over the same span (down 21%).
What does an ENERGY STAR score of 82 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 82 means the building performs better than about 82% of its national peers. BuildingCensus bands the score into report-card grades; 82 falls in band B — above median (70–84). 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. 315 Western Av's 49.0 kBtu/ft² across 7,316 sq ft works out to about 0.4 billion Btu (105 MWh-equivalent) in 2024. The disclosure also reports 22,288 kWh of electricity for the year.
Which law requires 315 Western Av to report its energy use?
315 Western Av 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:106955:2024). 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
- 20 City Hall Av· 7,260 sq ft · score 30 (D)
- Management Building - Bldg #6· 7,000 sq ft · score 67 (C)
- 209 Sumner Street· 6,500 sq ft · score 41 (D)
- Office building #107202· 5,090 sq ft · EUI 69.8 kBtu/ft²
- 81 Orton-Marotta Way· 4,725 sq ft · score 56 (C)
- Fairview Av· 4,600 sq ft · score 84 (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 315 Western Av's energy grade?
315 Western Av scores 82 out of 100 on ENERGY STAR — band B, above median (70–84) — in its 2024 Boston disclosure. Scores are national percentiles against similar buildings; 75+ qualifies for ENERGY STAR certification.
How much energy does 315 Western Av use?
Its 2024 site energy-use intensity was 49.0 kBtu/ft² across 7,316 sq ft, including 22,288 kWh of electricity.
What are 315 Western Av's carbon emissions?
315 Western Av reported 25 tCO₂e of greenhouse-gas emissions for 2024.
Where is 315 Western Av?
315 Western Av is in Boston, Massachusetts 2134.
How big is 315 Western Av and when was it built?
315 Western Av has 7,316 sq ft of gross floor area, as reported in its 2024 disclosure. It is classed as office.
Is 315 Western Av 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, “315 Western Av, Boston, Massachusetts — 2024 benchmarking disclosure”, https://buildingcensus.com/buildings/boston/315-western-av-a1f1aa76 (data as of July 9, 2026).