At a glance
955 Massachusetts Avenue is a 115,976-square-foot office building in Cambridge, Massachusetts, built in 1970. In its 2024 Cambridge benchmarking disclosure it reported an ENERGY STAR score of 78 out of 100 (grade B), a site energy-use intensity of 68.4 kBtu/ft² and 473 tCO₂e of greenhouse-gas emissions. That score is higher than 62% of the 94 scored office buildings in Cambridge.
BEUDO · reporting year 2024
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | 78 (band B) |
| Site EUI | 68.4 kBtu/ft² |
| Source EUI | 112.6 kBtu/ft² |
| GHG emissions | 473 tCO₂e |
| GHG intensity | — |
| Electricity | 792,275 kWh |
| Natural gas | 52,262 therms |
| Water use | 1,346 kgal |
| Gross floor area | 115,976 sq ft |
| Source record | cambridge:B1135:2024 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2024latest | 78 | ±0 | 68.4 kBtu/ft² | 473 tCO₂e |
| 2023 | 78 | -6 | 71.1 kBtu/ft² | 486 tCO₂e |
| 2022 | 84 | ±0 | 64.4 kBtu/ft² | 438 tCO₂e |
| 2021 | 84 | -3 | 66.6 kBtu/ft² | 449 tCO₂e |
| 2020 | 87 | +18 | 59.4 kBtu/ft² | 400 tCO₂e |
| 2019 | 69 | -3 | 86.3 kBtu/ft² | 498 tCO₂e |
| 2018 | 72 | -12 | 79.9 kBtu/ft² | 477 tCO₂e |
| 2017 | 84 | +23 | 85.5 kBtu/ft² | 510 tCO₂e |
| 2016 | 61 | +14 | 87.4 kBtu/ft² | 580 tCO₂e |
| 2015 | 47 | 107.5 kBtu/ft² | 711 tCO₂e |
Compliance context
BEUDO
Cambridge's 2023 BEUDO amendments require non-residential buildings of 100,000+ sq ft to reach net-zero emissions by 2035 (reductions starting 2026) and those of 25,000–100,000 sq ft by 2050 (starting 2030).
Ownership
955 MASSACHUSETTS AVENUE MA,LLC,
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Location
- Address
- 955 Massachusetts Avenue
- City
- Cambridge
- State
- Massachusetts
- Coordinates
- 42.36910, -71.10990
Within ~1 km
Nearby benchmarked buildings
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- 1493 Cambridge Streetscore 33
Hospital (General Medical & Surgical) · 360,250 sq ft
- 1 Oxford Stscore —
College/University · 355,836 sq ft
- 1575 Cambridge Streetscore —
Outpatient Rehabilitation/Physical Therapy · 352,622 sq ft
- 812 Memorial Drscore 99
Multifamily Housing · 283,150 sq ft
See also: most efficient in Cambridge · biggest emitters
How does 955 Massachusetts Avenue compare with other office buildings in Cambridge?
The latest disclosures cover 117 office buildings in Cambridge, out of 902 buildings citywide. 955 Massachusetts Avenue's ENERGY STAR score of 78 compares with an average of 64 across the 94 that report a score; it scores higher than 62% of them and lower than 36%. Its site EUI of 68.4 kBtu/ft² is about 13% below the average of 78.7 kBtu/ft² — it uses less energy per square foot than the typical building in that group.
At 115,976 sq ft, it is roughly in line with the average floor area of 121,167 sq ft for those buildings. It was built in 1970, 5 years later than the group's average year built (1965). 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 955 Massachusetts Avenue's energy performance changed over time?
BuildingCensus holds 10 Cambridge disclosures for 955 Massachusetts Avenue, covering report years 2015–2024. Its ENERGY STAR score went from 47 in 2015 to 78 in 2024 (+31 points); its best year on file was 2020, at 87. Site EUI moved from 107.5 kBtu/ft² (2015) to 68.4 kBtu/ft² (2024), a 36% decrease. Reported emissions went from 711 tCO₂e to 473 tCO₂e over the same span (down 33%).
What does an ENERGY STAR score of 78 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 78 means the building performs better than about 78% of its national peers. BuildingCensus bands the score into report-card grades; 78 falls in band B — above median (70–84). 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 Cambridge, 50% 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. 955 Massachusetts Avenue's 68.4 kBtu/ft² across 115,976 sq ft works out to about 7.9 billion Btu (2,325 MWh-equivalent) in 2024. Its source EUI of 112.6 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 792,275 kWh of electricity, 52,262 therms of natural gas and 1,346 thousand gallons of water for the year.
Which law requires 955 Massachusetts Avenue to report its energy use?
955 Massachusetts Avenue reports under BEUDO, the legal basis of Cambridge's Building Energy Use Disclosure Ordinance (BEUDO), which publishes each covered building's annual benchmarking results. The record shown here is the report-year 2024 disclosure (source record cambridge:B1135:2024). Cambridge's 2023 BEUDO amendments require non-residential buildings of 100,000+ sq ft to reach net-zero emissions by 2035 (reductions starting 2026) and those of 25,000–100,000 sq ft by 2050 (starting 2030).
More office buildings in Cambridge
- 2067 MASSACHUSETTS AVENUE· 110,628 sq ft · score 84 (B)
- One Brattle Square· 108,592 sq ft · score 64 (C)
- 1000 Massachusetts Ave· 108,411 sq ft · score 88 (A)
- 10 Fawcett St· 107,681 sq ft · score 70 (B)
- 10 Fawcett St· 107,681 sq ft · score 91 (A)
- 350 Mass Avenue· 103,825 sq ft · EUI 38.0 kBtu/ft²
- Office buildings in Cambridge· 117 benchmarked
- All Cambridge benchmarked buildings· BEUDO
- Most efficient large buildings in Cambridge
- Least efficient large buildings in Cambridge
- Biggest emitters in Cambridge
Frequently asked questions
What is 955 Massachusetts Avenue's energy grade?
955 Massachusetts Avenue scores 78 out of 100 on ENERGY STAR — band B, above median (70–84) — in its 2024 Cambridge disclosure. Scores are national percentiles against similar buildings; 75+ qualifies for ENERGY STAR certification.
How much energy does 955 Massachusetts Avenue use?
Its 2024 site energy-use intensity was 68.4 kBtu/ft² (112.6 kBtu/ft² source) across 115,976 sq ft, including 792,275 kWh of electricity and 52,262 therms of natural gas.
What are 955 Massachusetts Avenue's carbon emissions?
955 Massachusetts Avenue reported 473 tCO₂e of greenhouse-gas emissions for 2024.
Where is 955 Massachusetts Avenue?
955 Massachusetts Avenue is in Cambridge, Massachusetts. Its coordinates are 42.36910, -71.10990 (latitude, longitude), as published in the Building Energy Use Disclosure Ordinance (BEUDO) file.
How big is 955 Massachusetts Avenue and when was it built?
955 Massachusetts Avenue has 115,976 sq ft of gross floor area, as reported in its 2024 disclosure. The disclosure lists 1970 as its year built. It is classed as office.
Is 955 Massachusetts Avenue covered by BEUDO?
Yes — it appears in the 2024 Building Energy Use Disclosure Ordinance (BEUDO) disclosure, which lists the buildings reporting under BEUDO.
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About this data
Source: Building Energy Use Disclosure Ordinance (BEUDO) (BEUDO), as published October 2, 2026. See the methodology for how records are matched, cleaned and scored.
Cite as: BuildingCensus, “955 Massachusetts Avenue, Cambridge, Massachusetts — 2024 benchmarking disclosure”, https://buildingcensus.com/buildings/cambridge/955-massachusetts-avenue-94568c37 (data as of October 2, 2026).