21-31 Obierne Pl
Multifamily Housing in Boston, MA · 2119.
At a glance
21-31 Obierne Pl is a 5,040-square-foot multifamily housing building in Boston, Massachusetts. In its 2024 Boston benchmarking disclosure it reported a site energy-use intensity of 71.9 kBtu/ft² and 20 tCO₂e of greenhouse-gas emissions.
BERDO 2.0 · reporting year 2024
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | — |
| Site EUI | 71.9 kBtu/ft² |
| Source EUI | — |
| GHG emissions | 20 tCO₂e |
| GHG intensity | — |
| Electricity | 20,648 kWh |
| Natural gas | 2,917 therms |
| Gross floor area | 5,040 sq ft |
| Source record | boston:105922:2024 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2024latest | — | 71.9 kBtu/ft² | 20 tCO₂e | |
| 2023 | — | 69.0 kBtu/ft² | 19 tCO₂e | |
| 2022 | — | 76.4 kBtu/ft² | 22 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
ST JOSEPHS COMMUNITY INC
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Location
- Address
- 21-31 Obierne Pl
- City
- Boston
- State
- Massachusetts
- ZIP
- 2119.
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 21-31 Obierne Pl 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. Its site EUI of 71.9 kBtu/ft² is roughly in line with the average of 67.7 kBtu/ft².
At 5,040 sq ft, it is about 91% 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 21-31 Obierne Pl's energy performance changed over time?
BuildingCensus holds 3 Boston disclosures for 21-31 Obierne Pl, covering report years 2022–2024. Site EUI moved from 76.4 kBtu/ft² (2022) to 71.9 kBtu/ft² (2024), a 6% decrease. Reported emissions went from 22 tCO₂e to 20 tCO₂e over the same span (down 12%).
What does a site EUI of 71.9 kBtu/ft² mean?
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. 21-31 Obierne Pl's 71.9 kBtu/ft² across 5,040 sq ft works out to about 0.4 billion Btu (106 MWh-equivalent) in 2024. The disclosure also reports 20,648 kWh of electricity and 2,917 therms of natural gas for the year.
Which law requires 21-31 Obierne Pl to report its energy use?
21-31 Obierne Pl 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:105922:2024). 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
- 1 O'Leary Way· 4,932 sq ft · EUI 173.3 kBtu/ft²
- 84-84H Berkeley St· 4,890 sq ft · EUI 25.4 kBtu/ft²
- 51 S Huntington Av· 4,888 sq ft · EUI 75.4 kBtu/ft²
- 82 Berkeley St· 4,870 sq ft · EUI 21.4 kBtu/ft²
- 3-7 W School St· 4,868 sq ft
- 77-81 Lawrence St· 4,868 sq ft · EUI 49.0 kBtu/ft²
- Multifamily Housing buildings in Boston· 2,174 benchmarked
- All Boston benchmarked buildings· BERDO 2.0
- Most efficient large buildings in Boston
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- Biggest emitters in Boston
Frequently asked questions
What is 21-31 Obierne Pl's energy grade?
21-31 Obierne Pl did not report an ENERGY STAR score in its 2024 disclosure, but its site energy-use intensity was 71.9 kBtu/ft².
How much energy does 21-31 Obierne Pl use?
Its 2024 site energy-use intensity was 71.9 kBtu/ft² across 5,040 sq ft, including 20,648 kWh of electricity and 2,917 therms of natural gas.
What are 21-31 Obierne Pl's carbon emissions?
21-31 Obierne Pl reported 20 tCO₂e of greenhouse-gas emissions for 2024.
Where is 21-31 Obierne Pl?
21-31 Obierne Pl is in Boston, Massachusetts 2119.
How big is 21-31 Obierne Pl and when was it built?
21-31 Obierne Pl has 5,040 sq ft of gross floor area, as reported in its 2024 disclosure. It is classed as multifamily housing.
Is 21-31 Obierne Pl 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, “21-31 Obierne Pl, Boston, Massachusetts — 2024 benchmarking disclosure”, https://buildingcensus.com/buildings/boston/21-31-obierne-pl-9d714fe6 (data as of July 9, 2026).