10-12 Carol Ave
Multifamily Housing in Boston, MA · 2134.
At a glance
10-12 Carol Ave is a 40,488-square-foot multifamily housing building in Boston, Massachusetts. In its 2024 Boston benchmarking disclosure it reported an ENERGY STAR score of 99 out of 100 (grade A), a site energy-use intensity of 40.8 kBtu/ft² and 89 tCO₂e of greenhouse-gas emissions. That score is higher than 90% of the 1,225 scored multifamily housing buildings in Boston.
BERDO 2.0 · reporting year 2024
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | 99 (band A) |
| Site EUI | 40.8 kBtu/ft² |
| Source EUI | — |
| GHG emissions | 89 tCO₂e |
| GHG intensity | — |
| Electricity | 97,712 kWh |
| Natural gas | 13,194 therms |
| Gross floor area | 40,488 sq ft |
| Source record | boston:101661:2024 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2024latest | 99 | +23 | 40.8 kBtu/ft² | 89 tCO₂e |
| 2023 | 76 | -14 | 63.3 kBtu/ft² | 140 tCO₂e |
| 2022 | 90 | 51.6 kBtu/ft² | 125 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
CAROL AVE APARTMENTS LLC
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Location
- Address
- 10-12 Carol Ave
- 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 10-12 Carol Ave 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. 10-12 Carol Ave's ENERGY STAR score of 99 compares with an average of 71 across the 1,225 that report a score; it scores higher than 90% of them and lower than 7%. Its site EUI of 40.8 kBtu/ft² is about 40% below the average of 67.7 kBtu/ft² — it uses less energy per square foot than the typical building in that group.
At 40,488 sq ft, it is about 30% below 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 10-12 Carol Ave's energy performance changed over time?
BuildingCensus holds 3 Boston disclosures for 10-12 Carol Ave, covering report years 2022–2024. Its ENERGY STAR score went from 90 in 2022 to 99 in 2024 (+9 points). Site EUI moved from 51.6 kBtu/ft² (2022) to 40.8 kBtu/ft² (2024), a 21% decrease. Reported emissions went from 125 tCO₂e to 89 tCO₂e over the same span (down 29%).
What does an ENERGY STAR score of 99 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 99 means the building performs better than about 99% of its national peers. BuildingCensus bands the score into report-card grades; 99 falls in band A — high performer (85–100). 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. 10-12 Carol Ave's 40.8 kBtu/ft² across 40,488 sq ft works out to about 1.7 billion Btu (484 MWh-equivalent) in 2024. The disclosure also reports 97,712 kWh of electricity and 13,194 therms of natural gas for the year.
Which law requires 10-12 Carol Ave to report its energy use?
10-12 Carol 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:101661:2024). 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
- 66 Chiswick Rd· 40,484 sq ft · score 70 (B)
- 31 Burbank St· 40,461 sq ft · score 40 (D)
- 245-265 Norfolk St· 40,374 sq ft · score 52 (D)
- 17-21-25 Hammond St· 40,350 sq ft · EUI 37.0 kBtu/ft²
- 30 Iroquois St· 40,324 sq ft · score 95 (A)
- 170 Parker Hill Ave· 40,319 sq ft · score 95 (A)
- 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 10-12 Carol Ave's energy grade?
10-12 Carol Ave scores 99 out of 100 on ENERGY STAR — band A, high performer (85–100) — in its 2024 Boston disclosure. Scores are national percentiles against similar buildings; 75+ qualifies for ENERGY STAR certification.
How much energy does 10-12 Carol Ave use?
Its 2024 site energy-use intensity was 40.8 kBtu/ft² across 40,488 sq ft, including 97,712 kWh of electricity and 13,194 therms of natural gas.
What are 10-12 Carol Ave's carbon emissions?
10-12 Carol Ave reported 89 tCO₂e of greenhouse-gas emissions for 2024.
Where is 10-12 Carol Ave?
10-12 Carol Ave is in Boston, Massachusetts 2134.
How big is 10-12 Carol Ave and when was it built?
10-12 Carol Ave has 40,488 sq ft of gross floor area, as reported in its 2024 disclosure. It is classed as multifamily housing.
Is 10-12 Carol 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, “10-12 Carol Ave, Boston, Massachusetts — 2024 benchmarking disclosure”, https://buildingcensus.com/buildings/boston/10-12-carol-ave-c56ed1c4 (data as of July 9, 2026).