At a glance
15 New Chardon St is a 161,112-square-foot office building in Boston, Massachusetts. In its 2024 Boston benchmarking disclosure it reported an ENERGY STAR score of 79 out of 100 (grade B), a site energy-use intensity of 53.5 kBtu/ft² and 474 tCO₂e of greenhouse-gas emissions. That score is higher than 55% of the 356 scored office buildings in Boston.
BERDO 2.0 · reporting year 2024
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | 79 (band B) |
| Site EUI | 53.5 kBtu/ft² |
| Source EUI | — |
| GHG emissions | 474 tCO₂e |
| GHG intensity | — |
| Electricity | 1,213,865 kWh |
| Natural gas | 44,821 therms |
| Gross floor area | 161,112 sq ft |
| Source record | boston:105267:2024 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2024latest | 79 | -3 | 53.5 kBtu/ft² | 474 tCO₂e |
| 2023 | 82 | +3 | 52.1 kBtu/ft² | 480 tCO₂e |
| 2022 | 79 | 54.2 kBtu/ft² | 589 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
REEP-OFC ONE BOWDOIN
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Location
- Address
- 15 New Chardon St
- City
- Boston
- State
- Massachusetts
- ZIP
- 2114.
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 15 New Chardon St compare with other office buildings in Boston?
The latest disclosures cover 467 office buildings in Boston, out of 6,305 buildings citywide. 15 New Chardon St's ENERGY STAR score of 79 compares with an average of 71 across the 356 that report a score; it scores higher than 55% of them and lower than 42%. Its site EUI of 53.5 kBtu/ft² is about 13% below the average of 61.7 kBtu/ft² — it uses less energy per square foot than the typical building in that group.
At 161,112 sq ft, it is about 16% 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 15 New Chardon St's energy performance changed over time?
BuildingCensus holds 3 Boston disclosures for 15 New Chardon St, covering report years 2022–2024. Its ENERGY STAR score was 79 in both 2022 and 2024. Site EUI moved from 54.2 kBtu/ft² (2022) to 53.5 kBtu/ft² (2024), a 1% decrease. Reported emissions went from 589 tCO₂e to 474 tCO₂e over the same span (down 19%).
What does an ENERGY STAR score of 79 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 79 means the building performs better than about 79% of its national peers. BuildingCensus bands the score into report-card grades; 79 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. 15 New Chardon St's 53.5 kBtu/ft² across 161,112 sq ft works out to about 8.6 billion Btu (2,526 MWh-equivalent) in 2024. The disclosure also reports 1,213,865 kWh of electricity and 44,821 therms of natural gas for the year.
Which law requires 15 New Chardon St to report its energy use?
15 New Chardon 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:105267:2024). 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
- 27-43 Wormwood St· 156,510 sq ft · score 87 (A)
- 845-863 Boylston St· 155,775 sq ft · score 93 (A)
- 22-40 Chauncy St· 152,958 sq ft · score 87 (A)
- 9-11 Beacon St· 151,959 sq ft · score 86 (A)
- 249-267 Causeway St· 150,097 sq ft · EUI 28.6 kBtu/ft²
- 645 Summer St· 150,000 sq ft
- 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 15 New Chardon St's energy grade?
15 New Chardon St scores 79 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 15 New Chardon St use?
Its 2024 site energy-use intensity was 53.5 kBtu/ft² across 161,112 sq ft, including 1,213,865 kWh of electricity and 44,821 therms of natural gas.
What are 15 New Chardon St's carbon emissions?
15 New Chardon St reported 474 tCO₂e of greenhouse-gas emissions for 2024.
Where is 15 New Chardon St?
15 New Chardon St is in Boston, Massachusetts 2114.
How big is 15 New Chardon St and when was it built?
15 New Chardon St has 161,112 sq ft of gross floor area, as reported in its 2024 disclosure. It is classed as office.
Is 15 New Chardon 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, “15 New Chardon St, Boston, Massachusetts — 2024 benchmarking disclosure”, https://buildingcensus.com/buildings/boston/15-new-chardon-st-42afeb35 (data as of July 9, 2026).