9-11 Seaverns Ave
Multifamily Housing in Boston, MA · 2130.
At a glance
9-11 Seaverns Ave is a 20,336-square-foot multifamily housing building in Boston, Massachusetts. In its 2024 Boston benchmarking disclosure it reported an ENERGY STAR score of 95 out of 100 (grade A), a site energy-use intensity of 35.8 kBtu/ft² and 40 tCO₂e of greenhouse-gas emissions. That score is higher than 78% of the 1,225 scored multifamily housing buildings in Boston.
BERDO 2.0 · reporting year 2024
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | 95 (band A) |
| Site EUI | 35.8 kBtu/ft² |
| Source EUI | — |
| GHG emissions | 40 tCO₂e |
| GHG intensity | — |
| Electricity | 99,483 kWh |
| Natural gas | 3,881 therms |
| Gross floor area | 20,336 sq ft |
| Source record | boston:105645:2024 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2024latest | 95 | -4 | 35.8 kBtu/ft² | 40 tCO₂e |
| 2023 | 99 | 25.3 kBtu/ft² | 30 tCO₂e | |
| 2022 | — | — | — |
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
SEAVERNS BROWN REALTY TRUST
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Location
- Address
- 9-11 Seaverns Ave
- City
- Boston
- State
- Massachusetts
- ZIP
- 2130.
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 9-11 Seaverns 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. 9-11 Seaverns Ave's ENERGY STAR score of 95 compares with an average of 71 across the 1,225 that report a score; it scores higher than 78% of them and lower than 15%. Its site EUI of 35.8 kBtu/ft² is about half of the average of 67.7 kBtu/ft² — it uses less energy per square foot than the typical building in that group.
At 20,336 sq ft, it is about 65% 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 9-11 Seaverns Ave's energy performance changed over time?
BuildingCensus holds 3 Boston disclosures for 9-11 Seaverns Ave, covering report years 2022–2024. Its ENERGY STAR score went from 99 in 2023 to 95 in 2024 (-4 points); its best year on file was 2023, at 99. Site EUI moved from 25.3 kBtu/ft² (2023) to 35.8 kBtu/ft² (2024), an 42% increase. Reported emissions went from 30 tCO₂e to 40 tCO₂e over the same span (up 34%).
What does an ENERGY STAR score of 95 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 95 means the building performs better than about 95% of its national peers. BuildingCensus bands the score into report-card grades; 95 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. 9-11 Seaverns Ave's 35.8 kBtu/ft² across 20,336 sq ft works out to about 0.7 billion Btu (213 MWh-equivalent) in 2024. The disclosure also reports 99,483 kWh of electricity and 3,881 therms of natural gas for the year.
Which law requires 9-11 Seaverns Ave to report its energy use?
9-11 Seaverns 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:105645:2024). 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
- 149 Park Dr· 20,332 sq ft · score 95 (A)
- 45-49 Stoughton St· 20,256 sq ft · EUI 55.2 kBtu/ft²
- 51 Strathmore Rd· 20,248 sq ft · EUI 24.4 kBtu/ft²
- 3-9 Monsignor Patrick J. Lydon Way· 20,236 sq ft · EUI 49.9 kBtu/ft²
- 48-56A School St· 20,221 sq ft · EUI 71.9 kBtu/ft²
- 8 Gloucester St· 20,206 sq ft · EUI 79.3 kBtu/ft²
- 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 9-11 Seaverns Ave's energy grade?
9-11 Seaverns Ave scores 95 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 9-11 Seaverns Ave use?
Its 2024 site energy-use intensity was 35.8 kBtu/ft² across 20,336 sq ft, including 99,483 kWh of electricity and 3,881 therms of natural gas.
What are 9-11 Seaverns Ave's carbon emissions?
9-11 Seaverns Ave reported 40 tCO₂e of greenhouse-gas emissions for 2024.
Where is 9-11 Seaverns Ave?
9-11 Seaverns Ave is in Boston, Massachusetts 2130.
How big is 9-11 Seaverns Ave and when was it built?
9-11 Seaverns Ave has 20,336 sq ft of gross floor area, as reported in its 2024 disclosure. It is classed as multifamily housing.
Is 9-11 Seaverns 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, “9-11 Seaverns Ave, Boston, Massachusetts — 2024 benchmarking disclosure”, https://buildingcensus.com/buildings/boston/9-11-seaverns-ave-f80c0d65 (data as of July 9, 2026).