1-3 City Sq
Courthouse in Boston, MA · 2129.
At a glance
1-3 City Sq is a 35,200-square-foot courthouse building in Boston, Massachusetts. In its 2024 Boston benchmarking disclosure it reported an ENERGY STAR score of 100 out of 100 (grade A), a site energy-use intensity of 5.4 kBtu/ft² and 11 tCO₂e of greenhouse-gas emissions. That score is higher than 88% of the 8 scored courthouse buildings in Boston.
BERDO 2.0 · reporting year 2024
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | 100 (band A) |
| Site EUI | 5.4 kBtu/ft² |
| Source EUI | — |
| GHG emissions | 11 tCO₂e |
| GHG intensity | — |
| Electricity | 55,773 kWh |
| Natural gas | 1 therms |
| Gross floor area | 35,200 sq ft |
| Source record | boston:101887:2024 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2024latest | 100 | ±0 | 5.4 kBtu/ft² | 11 tCO₂e |
| 2023 | 100 | +4 | 4.7 kBtu/ft² | 10 tCO₂e |
| 2022 | 96 | 45.1 kBtu/ft² | 97 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
CITY OF BOSTON
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Location
- Address
- 1-3 City Sq
- City
- Boston
- State
- Massachusetts
- ZIP
- 2129.
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 1-3 City Sq compare with other courthouse buildings in Boston?
The latest disclosures cover 10 courthouse buildings in Boston, out of 6,305 buildings citywide. 1-3 City Sq's ENERGY STAR score of 100 compares with an average of 76 across the 8 that report a score; it scores higher than 88% of them. Its site EUI of 5.4 kBtu/ft² is about 91% below the average of 61.6 kBtu/ft² — it uses less energy per square foot than the typical building in that group.
At 35,200 sq ft, it is about 77% below the average floor area of 151,364 sq ft for those buildings. Across all 24 jurisdictions BuildingCensus covers, the 178 courthouse buildings average an ENERGY STAR score of 62 and a site EUI of 76.2 kBtu/ft².
How has 1-3 City Sq's energy performance changed over time?
BuildingCensus holds 3 Boston disclosures for 1-3 City Sq, covering report years 2022–2024. Its ENERGY STAR score went from 96 in 2022 to 100 in 2024 (+4 points); its best year on file was 2023, at 100. Site EUI moved from 45.1 kBtu/ft² (2022) to 5.4 kBtu/ft² (2024), a 88% decrease. Reported emissions went from 97 tCO₂e to 11 tCO₂e over the same span (down 89%).
What does an ENERGY STAR score of 100 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: 100 is the top of the scale. BuildingCensus bands the score into report-card grades; 100 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. 1-3 City Sq's 5.4 kBtu/ft² across 35,200 sq ft works out to about 0.2 billion Btu (56 MWh-equivalent) in 2024. The disclosure also reports 55,773 kWh of electricity and 1 therms of natural gas for the year.
Which law requires 1-3 City Sq to report its energy use?
1-3 City Sq 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:101887:2024). 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 courthouse buildings in Boston
Frequently asked questions
What is 1-3 City Sq's energy grade?
1-3 City Sq scores 100 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 1-3 City Sq use?
Its 2024 site energy-use intensity was 5.4 kBtu/ft² across 35,200 sq ft, including 55,773 kWh of electricity and 1 therms of natural gas.
What are 1-3 City Sq's carbon emissions?
1-3 City Sq reported 11 tCO₂e of greenhouse-gas emissions for 2024.
Where is 1-3 City Sq?
1-3 City Sq is in Boston, Massachusetts 2129.
How big is 1-3 City Sq and when was it built?
1-3 City Sq has 35,200 sq ft of gross floor area, as reported in its 2024 disclosure. It is classed as courthouse.
Is 1-3 City Sq 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, “1-3 City Sq, Boston, Massachusetts — 2024 benchmarking disclosure”, https://buildingcensus.com/buildings/boston/1-3-city-sq-1cf9d02e (data as of July 9, 2026).