At a glance
1000 Massachusetts Ave is a 31,422-square-foot office building in Boston, Massachusetts. In its 2024 Boston benchmarking disclosure it reported an ENERGY STAR score of 96 out of 100 (grade A), a site energy-use intensity of 18.8 kBtu/ft² and 34 tCO₂e of greenhouse-gas emissions. That score is higher than 92% of the 356 scored office buildings in Boston.
BERDO 2.0 · reporting year 2024
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | 96 (band A) |
| Site EUI | 18.8 kBtu/ft² |
| Source EUI | — |
| GHG emissions | 34 tCO₂e |
| GHG intensity | — |
| Electricity | 173,330 kWh |
| Gross floor area | 31,422 sq ft |
| Source record | boston:100076:2024 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2024latest | 96 | -1 | 18.8 kBtu/ft² | 34 tCO₂e |
| 2023 | 97 | -1 | 17.7 kBtu/ft² | 33 tCO₂e |
| 2022 | 98 | 15.4 kBtu/ft² | 38 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
1K MASS AVE LLC
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Location
- Address
- 1000 Massachusetts Ave
- City
- Boston
- State
- Massachusetts
- ZIP
- 2118.
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 1000 Massachusetts Ave compare with other office buildings in Boston?
The latest disclosures cover 467 office buildings in Boston, out of 6,305 buildings citywide. 1000 Massachusetts Ave's ENERGY STAR score of 96 compares with an average of 71 across the 356 that report a score; it scores higher than 92% of them and lower than 5%. Its site EUI of 18.8 kBtu/ft² is about 70% below the average of 61.7 kBtu/ft² — it uses less energy per square foot than the typical building in that group.
At 31,422 sq ft, it is about 84% 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 1000 Massachusetts Ave's energy performance changed over time?
BuildingCensus holds 3 Boston disclosures for 1000 Massachusetts Ave, covering report years 2022–2024. Its ENERGY STAR score went from 98 in 2022 to 96 in 2024 (-2 points); its best year on file was 2022, at 98. Site EUI moved from 15.4 kBtu/ft² (2022) to 18.8 kBtu/ft² (2024), an 22% increase. Reported emissions went from 38 tCO₂e to 34 tCO₂e over the same span (down 12%).
What does an ENERGY STAR score of 96 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 96 means the building performs better than about 96% of its national peers. BuildingCensus bands the score into report-card grades; 96 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. 1000 Massachusetts Ave's 18.8 kBtu/ft² across 31,422 sq ft works out to about 0.6 billion Btu (173 MWh-equivalent) in 2024. The disclosure also reports 173,330 kWh of electricity for the year.
Which law requires 1000 Massachusetts Ave to report its energy use?
1000 Massachusetts Ave 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:100076:2024). 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
- 38-42 Everett St· 31,128 sq ft · score 41 (D)
- 180 Canal St· 30,869 sq ft · score 80 (B)
- 91-95 Summer St· 30,640 sq ft
- 133-137 Portland St· 30,487 sq ft · score 59 (C)
- 7 Congress St· 30,430 sq ft · EUI 55.3 kBtu/ft²
- 7-11 Otis St· 30,000 sq ft · score 74 (B)
- 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 1000 Massachusetts Ave's energy grade?
1000 Massachusetts Ave scores 96 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 1000 Massachusetts Ave use?
Its 2024 site energy-use intensity was 18.8 kBtu/ft² across 31,422 sq ft, including 173,330 kWh of electricity.
What are 1000 Massachusetts Ave's carbon emissions?
1000 Massachusetts Ave reported 34 tCO₂e of greenhouse-gas emissions for 2024.
Where is 1000 Massachusetts Ave?
1000 Massachusetts Ave is in Boston, Massachusetts 2118.
How big is 1000 Massachusetts Ave and when was it built?
1000 Massachusetts Ave has 31,422 sq ft of gross floor area, as reported in its 2024 disclosure. It is classed as office.
Is 1000 Massachusetts Ave 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, “1000 Massachusetts Ave, Boston, Massachusetts — 2024 benchmarking disclosure”, https://buildingcensus.com/buildings/boston/1000-massachusetts-ave-bba60f7a (data as of July 9, 2026).