121 Saint Stephen St
Multifamily Housing in Boston, MA · 2115.
At a glance
121 Saint Stephen St is a 30,654-square-foot multifamily housing building in Boston, Massachusetts. In its 2024 Boston benchmarking disclosure it reported 20 tCO₂e of greenhouse-gas emissions.
BERDO 2.0 · reporting year 2024
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | — |
| Site EUI | — |
| Source EUI | — |
| GHG emissions | 20 tCO₂e |
| GHG intensity | — |
| Electricity | 103,592 kWh |
| Gross floor area | 30,654 sq ft |
| Source record | boston:105075:2024 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2024latest | — | — | 20 tCO₂e | |
| 2023 | 98 | -1 | 56.8 kBtu/ft² | 95 tCO₂e |
| 2022 | 99 | 54.0 kBtu/ft² | 96 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
No owning organisation shown. Names of private individuals in the disclosure are not published here.
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Location
- Address
- 121 Saint Stephen St
- City
- Boston
- State
- Massachusetts
- ZIP
- 2115.
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 121 Saint Stephen St 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.
At 30,654 sq ft, it is about half of 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 121 Saint Stephen St's energy performance changed over time?
BuildingCensus holds 3 Boston disclosures for 121 Saint Stephen St, covering report years 2022–2024. Its ENERGY STAR score went from 99 in 2022 to 98 in 2023 (-1 points); its best year on file was 2022, at 99. Site EUI moved from 54.0 kBtu/ft² (2022) to 56.8 kBtu/ft² (2023), an 5% increase. Reported emissions went from 96 tCO₂e to 20 tCO₂e over the same span (down 79%).
Which law requires 121 Saint Stephen St to report its energy use?
121 Saint Stephen 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:105075:2024). 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
- 28-42 General Lawrence J Logan Way· 30,620 sq ft · EUI 130.2 kBtu/ft²
- 35-37 Colborne Rd· 30,609 sq ft · score 77 (B)
- 25 Whittier St· 30,581 sq ft · score 99 (A)
- 140 Seaver St· 30,559 sq ft · score 20 (D)
- 242-250 North Beacon St· 30,510 sq ft · EUI 146.6 kBtu/ft²
- 81-89 Faneuil St· 30,510 sq ft · EUI 146.7 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 121 Saint Stephen St's energy grade?
121 Saint Stephen St did not report an ENERGY STAR score in its 2024 disclosure.
How much energy does 121 Saint Stephen St use?
No energy-use intensity was reported for 2024.
What are 121 Saint Stephen St's carbon emissions?
121 Saint Stephen St reported 20 tCO₂e of greenhouse-gas emissions for 2024.
Where is 121 Saint Stephen St?
121 Saint Stephen St is in Boston, Massachusetts 2115.
How big is 121 Saint Stephen St and when was it built?
121 Saint Stephen St has 30,654 sq ft of gross floor area, as reported in its 2024 disclosure. It is classed as multifamily housing.
Is 121 Saint Stephen 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, “121 Saint Stephen St, Boston, Massachusetts — 2024 benchmarking disclosure”, https://buildingcensus.com/buildings/boston/121-saint-stephen-st-a9f34882 (data as of July 9, 2026).