At a glance
144 Tremont St is a 42,007-square-foot office building in Boston, Massachusetts. In its 2024 Boston benchmarking disclosure it reported an ENERGY STAR score of 55 out of 100 (grade C), a site energy-use intensity of 42.0 kBtu/ft² and 99 tCO₂e of greenhouse-gas emissions. That score is higher than 20% of the 356 scored office buildings in Boston.
BERDO 2.0 · reporting year 2024
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | 55 (band C) |
| Site EUI | 42.0 kBtu/ft² |
| Source EUI | — |
| GHG emissions | 99 tCO₂e |
| GHG intensity | — |
| Electricity | 434,600 kWh |
| Natural gas | 2,810 therms |
| Gross floor area | 42,007 sq ft |
| Source record | boston:104498:2024 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2024latest | 55 | -3 | 42.0 kBtu/ft² | 99 tCO₂e |
| 2023 | 58 | +14 | 41.3 kBtu/ft² | 102 tCO₂e |
| 2022 | 44 | 51.0 kBtu/ft² | 157 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
NWCA BOSTON LLC
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Location
- Address
- 144 Tremont St
- City
- Boston
- State
- Massachusetts
- ZIP
- 2111.
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 144 Tremont St compare with other office buildings in Boston?
The latest disclosures cover 467 office buildings in Boston, out of 6,305 buildings citywide. 144 Tremont St's ENERGY STAR score of 55 compares with an average of 71 across the 356 that report a score; it scores higher than 20% of them and lower than 78%. Its site EUI of 42.0 kBtu/ft² is about 32% below the average of 61.7 kBtu/ft² — it uses less energy per square foot than the typical building in that group.
At 42,007 sq ft, it is about 78% 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 144 Tremont St's energy performance changed over time?
BuildingCensus holds 3 Boston disclosures for 144 Tremont St, covering report years 2022–2024. Its ENERGY STAR score went from 44 in 2022 to 55 in 2024 (+11 points); its best year on file was 2023, at 58. Site EUI moved from 51.0 kBtu/ft² (2022) to 42.0 kBtu/ft² (2024), a 18% decrease. Reported emissions went from 157 tCO₂e to 99 tCO₂e over the same span (down 37%).
What does an ENERGY STAR score of 55 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 55 means the building performs better than about 55% of its national peers. BuildingCensus bands the score into report-card grades; 55 falls in band C — below median (55–69). It sits 20 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. 144 Tremont St's 42.0 kBtu/ft² across 42,007 sq ft works out to about 1.8 billion Btu (517 MWh-equivalent) in 2024. The disclosure also reports 434,600 kWh of electricity and 2,810 therms of natural gas for the year.
Which law requires 144 Tremont St to report its energy use?
144 Tremont 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:104498:2024). 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
- 39-47 Newbury St· 41,574 sq ft · score 35 (D)
- 110-112 Southampton St· 41,229 sq ft
- 110 K St· 40,960 sq ft · score 83 (B)
- 116-118 Milk St· 40,887 sq ft · score 92 (A)
- Office building #103053· 40,398 sq ft · score 84 (B)
- 151 Merrimac St· 40,320 sq ft · score 52 (D)
- 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 144 Tremont St's energy grade?
144 Tremont St scores 55 out of 100 on ENERGY STAR — band C, below median (55–69) — in its 2024 Boston disclosure. Scores are national percentiles against similar buildings; 75+ qualifies for ENERGY STAR certification.
How much energy does 144 Tremont St use?
Its 2024 site energy-use intensity was 42.0 kBtu/ft² across 42,007 sq ft, including 434,600 kWh of electricity and 2,810 therms of natural gas.
What are 144 Tremont St's carbon emissions?
144 Tremont St reported 99 tCO₂e of greenhouse-gas emissions for 2024.
Where is 144 Tremont St?
144 Tremont St is in Boston, Massachusetts 2111.
How big is 144 Tremont St and when was it built?
144 Tremont St has 42,007 sq ft of gross floor area, as reported in its 2024 disclosure. It is classed as office.
Is 144 Tremont 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, “144 Tremont St, Boston, Massachusetts — 2024 benchmarking disclosure”, https://buildingcensus.com/buildings/boston/144-tremont-st-bd71d67c (data as of July 9, 2026).