25 James O'Neill St
Multifamily Housing in Boston, MA · 2127.
At a glance
25 James O'Neill St is a 61,678-square-foot multifamily housing building in Boston, Massachusetts. In its 2024 Boston benchmarking disclosure it reported an ENERGY STAR score of 71 out of 100 (grade B), a site energy-use intensity of 70.5 kBtu/ft² and 227 tCO₂e of greenhouse-gas emissions. That score is higher than 38% of the 1,225 scored multifamily housing buildings in Boston.
BERDO 2.0 · reporting year 2024
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | 71 (band B) |
| Site EUI | 70.5 kBtu/ft² |
| Source EUI | — |
| GHG emissions | 227 tCO₂e |
| GHG intensity | — |
| Electricity | 462,909 kWh |
| Natural gas | 25,767 therms |
| Gross floor area | 61,678 sq ft |
| Source record | boston:104815:2024 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2024latest | 71 | ±0 | 70.5 kBtu/ft² | 227 tCO₂e |
| 2023 | 71 | -6 | 68.6 kBtu/ft² | 237 tCO₂e |
| 2022 | 77 | 64.6 kBtu/ft² | 255 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
OLD COLONY REVITALIZATION CP
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Location
- Address
- 25 James O'Neill 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 25 James O'Neill St compare with other multifamily housing buildings in Boston?
The latest disclosures cover 2,174 multifamily housing buildings in Boston, out of 6,305 buildings citywide. 25 James O'Neill St's ENERGY STAR score of 71 compares with an average of 71 across the 1,225 that report a score; it scores higher than 38% of them and lower than 61%. Its site EUI of 70.5 kBtu/ft² is roughly in line with the average of 67.7 kBtu/ft².
At 61,678 sq ft, it is roughly in line with the average floor area of 58,087 sq ft for those buildings. Across all 24 jurisdictions BuildingCensus covers, the 59,945 multifamily housing buildings average an ENERGY STAR score of 70 and a site EUI of 59.0 kBtu/ft².
How has 25 James O'Neill St's energy performance changed over time?
BuildingCensus holds 3 Boston disclosures for 25 James O'Neill St, covering report years 2022–2024. Its ENERGY STAR score went from 77 in 2022 to 71 in 2024 (-6 points); its best year on file was 2022, at 77. Site EUI moved from 64.6 kBtu/ft² (2022) to 70.5 kBtu/ft² (2024), an 9% increase. Reported emissions went from 255 tCO₂e to 227 tCO₂e over the same span (down 11%).
What does an ENERGY STAR score of 71 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 71 means the building performs better than about 71% of its national peers. BuildingCensus bands the score into report-card grades; 71 falls in band B — above median (70–84). It sits 4 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. 25 James O'Neill St's 70.5 kBtu/ft² across 61,678 sq ft works out to about 4.3 billion Btu (1,274 MWh-equivalent) in 2024. The disclosure also reports 462,909 kWh of electricity and 25,767 therms of natural gas for the year.
Which law requires 25 James O'Neill St to report its energy use?
25 James O'Neill 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:104815:2024). 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 multifamily housing buildings in Boston
- 10 Hammond St· 61,440 sq ft · score 100 (A)
- 115-119 Chauncy St· 61,424 sq ft · EUI 52.4 kBtu/ft²
- 189-191 F St· 61,054 sq ft · score 95 (A)
- 72 Gardner St· 61,020 sq ft · score 100 (A)
- 545-549 Blue Hill Ave· 60,900 sq ft · score 93 (A)
- Multifamily Housing building #C10114· 60,867 sq ft · score 82 (B)
- Multifamily Housing buildings in Boston· 2,174 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 25 James O'Neill St's energy grade?
25 James O'Neill St scores 71 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 25 James O'Neill St use?
Its 2024 site energy-use intensity was 70.5 kBtu/ft² across 61,678 sq ft, including 462,909 kWh of electricity and 25,767 therms of natural gas.
What are 25 James O'Neill St's carbon emissions?
25 James O'Neill St reported 227 tCO₂e of greenhouse-gas emissions for 2024.
Where is 25 James O'Neill St?
25 James O'Neill St is in Boston, Massachusetts 2127.
How big is 25 James O'Neill St and when was it built?
25 James O'Neill St has 61,678 sq ft of gross floor area, as reported in its 2024 disclosure. It is classed as multifamily housing.
Is 25 James O'Neill 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, “25 James O'Neill St, Boston, Massachusetts — 2024 benchmarking disclosure”, https://buildingcensus.com/buildings/boston/25-james-o-neill-st-f22ad18e (data as of July 9, 2026).