At a glance
1050 Massachusetts Avenue is a 73,498-square-foot office building in Cambridge, Massachusetts, built in 1974. In its 2024 Cambridge benchmarking disclosure it reported an ENERGY STAR score of 45 out of 100 (grade D), a site energy-use intensity of 66.6 kBtu/ft² and 317 tCO₂e of greenhouse-gas emissions. That score is higher than 20% of the 94 scored office buildings in Cambridge.
BEUDO · reporting year 2024
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | 45 (band D) |
| Site EUI | 66.6 kBtu/ft² |
| Source EUI | 141.1 kBtu/ft² |
| GHG emissions | 317 tCO₂e |
| GHG intensity | — |
| Electricity | 876,630 kWh |
| Natural gas | 19,017 therms |
| Water use | 904 kgal |
| Gross floor area | 73,498 sq ft |
| Source record | cambridge:B1721:2024 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2024latest | 45 | +4 | 66.6 kBtu/ft² | 317 tCO₂e |
| 2023 | 41 | -3 | 65.5 kBtu/ft² | 318 tCO₂e |
| 2022 | 44 | +2 | 65.2 kBtu/ft² | 313 tCO₂e |
| 2021 | 42 | -5 | 68.6 kBtu/ft² | 328 tCO₂e |
| 2020 | 47 | -1 | 67.0 kBtu/ft² | 317 tCO₂e |
| 2019 | 48 | +4 | 79.9 kBtu/ft² | 358 tCO₂e |
| 2018 | 44 | -3 | 85.6 kBtu/ft² | 401 tCO₂e |
| 2017 | 47 | -2 | 80.5 kBtu/ft² | 396 tCO₂e |
| 2016 | 49 | -17 | 77.6 kBtu/ft² | 384 tCO₂e |
| 2015 | 66 | 69.0 kBtu/ft² | 331 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
1050 MASS AVE INVESTMENT, INC.
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Location
- Address
- 1050 Massachusetts Avenue
- City
- Cambridge
- State
- Massachusetts
- Coordinates
- 42.36980, -71.11300
Within ~1 km
Nearby benchmarked buildings
- 900 Memorial Drivescore 47
Multifamily Housing · 450,849 sq ft
- 459 Broadwayscore 71
K-12 School · 403,393 sq ft
- 1 Oxford Stscore —
College/University · 355,836 sq ft
- 1575 Cambridge Streetscore —
Outpatient Rehabilitation/Physical Therapy · 352,622 sq ft
- 75 Mount Auburn Streetscore 79
Office · 345,571 sq ft
- 95 Dunster Stscore —
Residence Hall/Dormitory · 257,543 sq ft
See also: most efficient in Cambridge · biggest emitters
How does 1050 Massachusetts Avenue compare with other office buildings in Cambridge?
The latest disclosures cover 117 office buildings in Cambridge, out of 902 buildings citywide. 1050 Massachusetts Avenue's ENERGY STAR score of 45 compares with an average of 64 across the 94 that report a score; it scores higher than 20% of them and lower than 78%. Its site EUI of 66.6 kBtu/ft² is about 15% below the average of 78.7 kBtu/ft² — it uses less energy per square foot than the typical building in that group.
At 73,498 sq ft, it is about 39% below the average floor area of 121,167 sq ft for those buildings. It was built in 1974, 9 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 1050 Massachusetts Avenue's energy performance changed over time?
BuildingCensus holds 10 Cambridge disclosures for 1050 Massachusetts Avenue, covering report years 2015–2024. Its ENERGY STAR score went from 66 in 2015 to 45 in 2024 (-21 points); its best year on file was 2015, at 66. Site EUI moved from 69.0 kBtu/ft² (2015) to 66.6 kBtu/ft² (2024), a 3% decrease. Reported emissions went from 331 tCO₂e to 317 tCO₂e over the same span (down 4%).
What does an ENERGY STAR score of 45 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 45 means the building performs better than about 45% of its national peers. BuildingCensus bands the score into report-card grades; 45 falls in band D — lowest band (1–54). It sits 30 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. 1050 Massachusetts Avenue's 66.6 kBtu/ft² across 73,498 sq ft works out to about 4.9 billion Btu (1,435 MWh-equivalent) in 2024. Its source EUI of 141.1 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 876,630 kWh of electricity, 19,017 therms of natural gas and 904 thousand gallons of water for the year.
Which law requires 1050 Massachusetts Avenue to report its energy use?
1050 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:B1721:2024). 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
- 114 Mt Auburn Street· 65,107 sq ft · score 37 (D)
- 210 Broadway· 64,812 sq ft · score 43 (D)
- 44 Brattle Street· 64,179 sq ft · score 79 (B)
- 185 ALEWIFE BROOK PARKWAY· 64,000 sq ft · score 55 (C)
- 55 Wilson Road· 63,500 sq ft · EUI 178.0 kBtu/ft²
- 10-14 Arrow Street and 25-27 Mount Auburn Street· 63,198 sq ft · score 92 (A)
- 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 1050 Massachusetts Avenue's energy grade?
1050 Massachusetts Avenue scores 45 out of 100 on ENERGY STAR — band D, lowest band (1–54) — in its 2024 Cambridge disclosure. Scores are national percentiles against similar buildings; 75+ qualifies for ENERGY STAR certification.
How much energy does 1050 Massachusetts Avenue use?
Its 2024 site energy-use intensity was 66.6 kBtu/ft² (141.1 kBtu/ft² source) across 73,498 sq ft, including 876,630 kWh of electricity and 19,017 therms of natural gas.
What are 1050 Massachusetts Avenue's carbon emissions?
1050 Massachusetts Avenue reported 317 tCO₂e of greenhouse-gas emissions for 2024.
Where is 1050 Massachusetts Avenue?
1050 Massachusetts Avenue is in Cambridge, Massachusetts. Its coordinates are 42.36980, -71.11300 (latitude, longitude), as published in the Building Energy Use Disclosure Ordinance (BEUDO) file.
How big is 1050 Massachusetts Avenue and when was it built?
1050 Massachusetts Avenue has 73,498 sq ft of gross floor area, as reported in its 2024 disclosure. The disclosure lists 1974 as its year built. It is classed as office.
Is 1050 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, “1050 Massachusetts Avenue, Cambridge, Massachusetts — 2024 benchmarking disclosure”, https://buildingcensus.com/buildings/cambridge/1050-massachusetts-avenue-458a46c2 (data as of October 2, 2026).