At a glance
55 Cambridge Parkway is a 283,686-square-foot office building in Cambridge, Massachusetts, built in 1985. In its 2024 Cambridge benchmarking disclosure it reported an ENERGY STAR score of 61 out of 100 (grade C), a site energy-use intensity of 68.2 kBtu/ft² and 1,397 tCO₂e of greenhouse-gas emissions. That score is higher than 32% of the 94 scored office buildings in Cambridge.
BEUDO · reporting year 2024
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | 61 (band C) |
| Site EUI | 68.2 kBtu/ft² |
| Source EUI | 191.0 kBtu/ft² |
| GHG emissions | 1,397 tCO₂e |
| GHG intensity | — |
| Electricity | 5,672,284 kWh |
| Water use | 2,991 kgal |
| Gross floor area | 283,686 sq ft |
| Source record | cambridge:B1370:2024 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2024latest | 61 | -4 | 68.2 kBtu/ft² | 1,397 tCO₂e |
| 2023 | 65 | -1 | 64.7 kBtu/ft² | 1,325 tCO₂e |
| 2022 | 66 | -7 | 64.5 kBtu/ft² | 1,315 tCO₂e |
| 2021 | 73 | -3 | 52.8 kBtu/ft² | 1,082 tCO₂e |
| 2020 | 76 | 53.1 kBtu/ft² | 1,068 tCO₂e | |
| 2019 | — | — | 1,323 tCO₂e | |
| 2018 | — | — | 1,370 tCO₂e | |
| 2017 | 77 | +1 | 65.1 kBtu/ft² | 1,383 tCO₂e |
| 2016 | 76 | +8 | 58.7 kBtu/ft² | 1,248 tCO₂e |
| 2015 | 68 | 66.8 kBtu/ft² | 1,453 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
55 CAMBRIDGE PARKWAY, LLC
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Location
- Address
- 55 Cambridge Parkway
- City
- Cambridge
- State
- Massachusetts
- Coordinates
- 42.36580, -71.07590
Within ~1 km
Nearby benchmarked buildings
- 100 Cambridge Side Placescore —
Enclosed Mall · 747,697 sq ft
- One Leighton Streetscore 21
Multifamily Housing · 612,952 sq ft
- 50-60 Binney STscore —
Mixed Use Property · 532,739 sq ft
- 8-12 Museum Wayscore 88
Multifamily Housing · 525,000 sq ft
- 20 Child Streetscore 100
Multifamily Housing · 485,197 sq ft
- 222 Jacobs Streetscore —
Laboratory · 466,713 sq ft
See also: most efficient in Cambridge · biggest emitters
How does 55 Cambridge Parkway compare with other office buildings in Cambridge?
The latest disclosures cover 117 office buildings in Cambridge, out of 902 buildings citywide. 55 Cambridge Parkway's ENERGY STAR score of 61 compares with an average of 64 across the 94 that report a score; it scores higher than 32% of them and lower than 66%. Its site EUI of 68.2 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 283,686 sq ft, it is about 134% above the average floor area of 121,167 sq ft for those buildings. It was built in 1985, 20 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 55 Cambridge Parkway's energy performance changed over time?
BuildingCensus holds 10 Cambridge disclosures for 55 Cambridge Parkway, covering report years 2015–2024. Its ENERGY STAR score went from 68 in 2015 to 61 in 2024 (-7 points); its best year on file was 2017, at 77. Site EUI moved from 66.8 kBtu/ft² (2015) to 68.2 kBtu/ft² (2024), an 2% increase. Reported emissions went from 1,453 tCO₂e to 1,397 tCO₂e over the same span (down 4%).
What does an ENERGY STAR score of 61 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 61 means the building performs better than about 61% of its national peers. BuildingCensus bands the score into report-card grades; 61 falls in band C — below median (55–69). It sits 14 points below 75, the threshold for ENERGY STAR certification. 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. 55 Cambridge Parkway's 68.2 kBtu/ft² across 283,686 sq ft works out to about 19.3 billion Btu (5,670 MWh-equivalent) in 2024. Its source EUI of 191.0 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 5,672,284 kWh of electricity and 2,991 thousand gallons of water for the year.
Which law requires 55 Cambridge Parkway to report its energy use?
55 Cambridge Parkway 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:B1370:2024). 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
- 255 Main Street· 281,000 sq ft · score 63 (C)
- 90 Broadway· 280,488 sq ft · score 72 (B)
- 355 Main Street· 262,476 sq ft · score 78 (B)
- 25 First Street· 252,662 sq ft · score 91 (A)
- 617 Concord Ave· 236,774 sq ft
- 2 First Street· 211,618 sq ft · score 73 (B)
- 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 55 Cambridge Parkway's energy grade?
55 Cambridge Parkway scores 61 out of 100 on ENERGY STAR — band C, below median (55–69) — in its 2024 Cambridge disclosure. Scores are national percentiles against similar buildings; 75+ qualifies for ENERGY STAR certification.
How much energy does 55 Cambridge Parkway use?
Its 2024 site energy-use intensity was 68.2 kBtu/ft² (191.0 kBtu/ft² source) across 283,686 sq ft, including 5,672,284 kWh of electricity.
What are 55 Cambridge Parkway's carbon emissions?
55 Cambridge Parkway reported 1,397 tCO₂e of greenhouse-gas emissions for 2024.
Where is 55 Cambridge Parkway?
55 Cambridge Parkway is in Cambridge, Massachusetts. Its coordinates are 42.36580, -71.07590 (latitude, longitude), as published in the Building Energy Use Disclosure Ordinance (BEUDO) file.
How big is 55 Cambridge Parkway and when was it built?
55 Cambridge Parkway has 283,686 sq ft of gross floor area, as reported in its 2024 disclosure. The disclosure lists 1985 as its year built. It is classed as office.
Is 55 Cambridge Parkway 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, “55 Cambridge Parkway, Cambridge, Massachusetts — 2024 benchmarking disclosure”, https://buildingcensus.com/buildings/cambridge/55-cambridge-parkway-830695a7 (data as of October 2, 2026).