At a glance
12 Park St is a 44,000-square-foot office building in Boston, Massachusetts. In its 2024 Boston benchmarking disclosure it reported an ENERGY STAR score of 45 out of 100 (grade D), a site energy-use intensity of 92.1 kBtu/ft² and 309 tCO₂e of greenhouse-gas emissions. That score is higher than 14% of the 356 scored office buildings in Boston.
BERDO 2.0 · reporting year 2024
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | 45 (band D) |
| Site EUI | 92.1 kBtu/ft² |
| Source EUI | — |
| GHG emissions | 309 tCO₂e |
| GHG intensity | — |
| Electricity | 653,055 kWh |
| Natural gas | 34,288 therms |
| Gross floor area | 44,000 sq ft |
| Source record | boston:100407:2024 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2024latest | 45 | 92.1 kBtu/ft² | 309 tCO₂e | |
| 2023 | — | — | — | |
| 2022 | 65 | 66.6 kBtu/ft² | 189 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
APPALACHIAN MOUNTAIN CLUB
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Location
- Address
- 12 Park St
- City
- Boston
- State
- Massachusetts
- ZIP
- 2129.
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 12 Park St compare with other office buildings in Boston?
The latest disclosures cover 467 office buildings in Boston, out of 6,305 buildings citywide. 12 Park St's ENERGY STAR score of 45 compares with an average of 71 across the 356 that report a score; it scores higher than 14% of them and lower than 84%. Its site EUI of 92.1 kBtu/ft² is about 49% above the average of 61.7 kBtu/ft² — it uses more energy per square foot than the typical building in that group.
At 44,000 sq ft, it is about 77% 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 12 Park St's energy performance changed over time?
BuildingCensus holds 3 Boston disclosures for 12 Park St, covering report years 2022–2024. Its ENERGY STAR score went from 65 in 2022 to 45 in 2024 (-20 points); its best year on file was 2022, at 65. Site EUI moved from 66.6 kBtu/ft² (2022) to 92.1 kBtu/ft² (2024), an 38% increase. Reported emissions went from 189 tCO₂e to 309 tCO₂e over the same span (up 64%).
What does an ENERGY STAR score of 45 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 45 means the building performs better than about 45% of its national peers. BuildingCensus bands the score into report-card grades; 45 falls in band D — lowest band (1–54). It sits 30 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. 12 Park St's 92.1 kBtu/ft² across 44,000 sq ft works out to about 4.1 billion Btu (1,188 MWh-equivalent) in 2024. The disclosure also reports 653,055 kWh of electricity and 34,288 therms of natural gas for the year.
Which law requires 12 Park St to report its energy use?
12 Park 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:100407:2024). 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
- 549-551 Tremont St· 43,869 sq ft · score 96 (A)
- 50-58 Eastern Ave· 43,518 sq ft · score 74 (B)
- 149 Newbury St· 43,500 sq ft · score 54 (D)
- 74 Lawley St· 43,495 sq ft · score 95 (A)
- 1135 Morton St· 43,060 sq ft · EUI 51.7 kBtu/ft²
- 50 Redfield St· 42,669 sq ft · score 94 (A)
- 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 12 Park St's energy grade?
12 Park St scores 45 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 12 Park St use?
Its 2024 site energy-use intensity was 92.1 kBtu/ft² across 44,000 sq ft, including 653,055 kWh of electricity and 34,288 therms of natural gas.
What are 12 Park St's carbon emissions?
12 Park St reported 309 tCO₂e of greenhouse-gas emissions for 2024.
Where is 12 Park St?
12 Park St is in Boston, Massachusetts 2129.
How big is 12 Park St and when was it built?
12 Park St has 44,000 sq ft of gross floor area, as reported in its 2024 disclosure. It is classed as office.
Is 12 Park 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, “12 Park St, Boston, Massachusetts — 2024 benchmarking disclosure”, https://buildingcensus.com/buildings/boston/12-park-st-7f447307 (data as of July 9, 2026).