49 South St
Multifamily Housing in Boston, MA · 2130.
At a glance
49 South St is a 10,448-square-foot multifamily housing building in Boston, Massachusetts. In its 2024 Boston benchmarking disclosure it reported a site energy-use intensity of 93.6 kBtu/ft² and 52 tCO₂e of greenhouse-gas emissions.
BERDO 2.0 · reporting year 2024
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | — |
| Site EUI | 93.6 kBtu/ft² |
| Source EUI | — |
| GHG emissions | 52 tCO₂e |
| GHG intensity | — |
| Electricity | 4,639 kWh |
| Natural gas | 9,620 therms |
| Gross floor area | 10,448 sq ft |
| Source record | boston:105868:2024 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2024latest | — | 93.6 kBtu/ft² | 52 tCO₂e | |
| 2023 | — | 54.5 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
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Location
- Address
- 49 South St
- 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 49 South 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. Its site EUI of 93.6 kBtu/ft² is about 38% above the average of 67.7 kBtu/ft² — it uses more energy per square foot than the typical building in that group.
At 10,448 sq ft, it is about 82% 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 49 South St's energy performance changed over time?
BuildingCensus holds 3 Boston disclosures for 49 South St, covering report years 2022–2024. Site EUI moved from 54.5 kBtu/ft² (2023) to 93.6 kBtu/ft² (2024), an 72% increase. Reported emissions went from 30 tCO₂e to 52 tCO₂e over the same span (up 71%).
What does a site EUI of 93.6 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. 49 South St's 93.6 kBtu/ft² across 10,448 sq ft works out to about 1 billion Btu (287 MWh-equivalent) in 2024. The disclosure also reports 4,639 kWh of electricity and 9,620 therms of natural gas for the year.
Which law requires 49 South St to report its energy use?
49 South 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:105868:2024). 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
- 17 Lattimore Court· 10,420 sq ft · EUI 8.3 kBtu/ft²
- 40 Upton St· 10,410 sq ft · EUI 67.4 kBtu/ft²
- 8-12 Battery St· 10,401 sq ft · EUI 30.2 kBtu/ft²
- 402-404 Main St· 10,400 sq ft · EUI 45.6 kBtu/ft²
- 72-74 Marginal St· 10,380 sq ft · EUI 133.2 kBtu/ft²
- 90-96 Regent St· 10,080 sq ft · EUI 68.5 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 49 South St's energy grade?
49 South St did not report an ENERGY STAR score in its 2024 disclosure, but its site energy-use intensity was 93.6 kBtu/ft².
How much energy does 49 South St use?
Its 2024 site energy-use intensity was 93.6 kBtu/ft² across 10,448 sq ft, including 4,639 kWh of electricity and 9,620 therms of natural gas.
What are 49 South St's carbon emissions?
49 South St reported 52 tCO₂e of greenhouse-gas emissions for 2024.
Where is 49 South St?
49 South St is in Boston, Massachusetts 2130.
How big is 49 South St and when was it built?
49 South St has 10,448 sq ft of gross floor area, as reported in its 2024 disclosure. It is classed as multifamily housing.
Is 49 South 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, “49 South St, Boston, Massachusetts — 2024 benchmarking disclosure”, https://buildingcensus.com/buildings/boston/49-south-st-0ca93e8c (data as of July 9, 2026).