At a glance
100 City Hall Plz is a 50,000-square-foot office building in Boston, Massachusetts. In its 2024 Boston benchmarking disclosure it reported an ENERGY STAR score of 35 out of 100 (grade D), a site energy-use intensity of 89.0 kBtu/ft² and 244 tCO₂e of greenhouse-gas emissions. That score is higher than 8% of the 356 scored office buildings in Boston.
BERDO 2.0 · reporting year 2024
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | 35 (band D) |
| Site EUI | 89.0 kBtu/ft² |
| Source EUI | — |
| GHG emissions | 244 tCO₂e |
| GHG intensity | — |
| Electricity | 593,737 kWh |
| Natural gas | 24,256 therms |
| Gross floor area | 50,000 sq ft |
| Source record | boston:105643:2024 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2024latest | 35 | -10 | 89.0 kBtu/ft² | 244 tCO₂e |
| 2023 | 45 | 76.1 kBtu/ft² | 215 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
SEARS CRESCENT BUILDING LLC
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Location
- Address
- 100 City Hall Plz
- City
- Boston
- State
- Massachusetts
- ZIP
- 2108.
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 100 City Hall Plz compare with other office buildings in Boston?
The latest disclosures cover 467 office buildings in Boston, out of 6,305 buildings citywide. 100 City Hall Plz's ENERGY STAR score of 35 compares with an average of 71 across the 356 that report a score; it scores higher than 8% of them and lower than 91%. Its site EUI of 89.0 kBtu/ft² is about 44% above the average of 61.7 kBtu/ft² — it uses more energy per square foot than the typical building in that group.
At 50,000 sq ft, it is about 74% below the average floor area of 191,803 sq ft for those buildings. Across all 24 jurisdictions BuildingCensus covers, the 15,264 office buildings average an ENERGY STAR score of 73 and a site EUI of 59.3 kBtu/ft².
How has 100 City Hall Plz's energy performance changed over time?
BuildingCensus holds 3 Boston disclosures for 100 City Hall Plz, covering report years 2022–2024. Its ENERGY STAR score went from 45 in 2023 to 35 in 2024 (-10 points); its best year on file was 2023, at 45. Site EUI moved from 76.1 kBtu/ft² (2023) to 89.0 kBtu/ft² (2024), an 17% increase. Reported emissions went from 215 tCO₂e to 244 tCO₂e over the same span (up 14%).
What does an ENERGY STAR score of 35 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 35 means the building performs better than about 35% of its national peers. BuildingCensus bands the score into report-card grades; 35 falls in band D — lowest band (1–54). It sits 40 points below 75, the threshold for ENERGY STAR certification. 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. 100 City Hall Plz's 89.0 kBtu/ft² across 50,000 sq ft works out to about 4.5 billion Btu (1,304 MWh-equivalent) in 2024. The disclosure also reports 593,737 kWh of electricity and 24,256 therms of natural gas for the year.
Which law requires 100 City Hall Plz to report its energy use?
100 City Hall Plz 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:105643:2024). 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 office buildings in Boston
- 60 Congress St· 49,725 sq ft · EUI 112.4 kBtu/ft²
- 30 Merchants Row· 49,631 sq ft · score 76 (B)
- 25-55 Court St· 49,591 sq ft · EUI 99.5 kBtu/ft²
- 12-56 Thomson Pl· 49,500 sq ft · score 79 (B)
- 60 Canal St· 49,336 sq ft · score 83 (B)
- 1 First Ave· 49,247 sq ft · score 68 (C)
- Office buildings in Boston· 467 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 100 City Hall Plz's energy grade?
100 City Hall Plz scores 35 out of 100 on ENERGY STAR — band D, lowest band (1–54) — in its 2024 Boston disclosure. Scores are national percentiles against similar buildings; 75+ qualifies for ENERGY STAR certification.
How much energy does 100 City Hall Plz use?
Its 2024 site energy-use intensity was 89.0 kBtu/ft² across 50,000 sq ft, including 593,737 kWh of electricity and 24,256 therms of natural gas.
What are 100 City Hall Plz's carbon emissions?
100 City Hall Plz reported 244 tCO₂e of greenhouse-gas emissions for 2024.
Where is 100 City Hall Plz?
100 City Hall Plz is in Boston, Massachusetts 2108.
How big is 100 City Hall Plz and when was it built?
100 City Hall Plz has 50,000 sq ft of gross floor area, as reported in its 2024 disclosure. It is classed as office.
Is 100 City Hall Plz 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, “100 City Hall Plz, Boston, Massachusetts — 2024 benchmarking disclosure”, https://buildingcensus.com/buildings/boston/100-city-hall-plz-90c5ba70 (data as of July 9, 2026).