At a glance
75 Mount Auburn Street is a 345,571-square-foot office building in Cambridge, Massachusetts, built in 1964. In its 2024 Cambridge benchmarking disclosure it reported an ENERGY STAR score of 79 out of 100 (grade B), a site energy-use intensity of 85.0 kBtu/ft² and 1,709 tCO₂e of greenhouse-gas emissions. That score is higher than 64% of the 94 scored office buildings in Cambridge.
BEUDO · reporting year 2024
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | 79 (band B) |
| Site EUI | 85.0 kBtu/ft² |
| Source EUI | 117.6 kBtu/ft² |
| GHG emissions | 1,709 tCO₂e |
| GHG intensity | — |
| Electricity | 1,809,900 kWh |
| Natural gas | 160,219 therms |
| Water use | 1,776 kgal |
| Gross floor area | 345,571 sq ft |
| Source record | cambridge:B1275:2024 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2024latest | 79 | -4 | 85.0 kBtu/ft² | 1,709 tCO₂e |
| 2023 | 83 | -11 | 76.3 kBtu/ft² | 1,537 tCO₂e |
| 2022 | 94 | ±0 | 46.7 kBtu/ft² | 974 tCO₂e |
| 2021 | 94 | +5 | 48.3 kBtu/ft² | 999 tCO₂e |
| 2020 | 89 | 64.1 kBtu/ft² | 1,290 tCO₂e | |
| 2019 | — | — | 0 tCO₂e | |
| 2018 | 99 | -1 | 31.2 kBtu/ft² | 391 tCO₂e |
| 2017 | 100 | ±0 | 35.1 kBtu/ft² | 452 tCO₂e |
| 2016 | 100 | +1 | 39.3 kBtu/ft² | 501 tCO₂e |
| 2015 | 99 | 52.1 kBtu/ft² | 664 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
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Location
- Address
- 75 Mount Auburn Street
- City
- Cambridge
- State
- Massachusetts
- Coordinates
- 42.37260, -71.11860
Within ~1 km
Nearby benchmarked buildings
- 52 Oxford Stscore —
College/University · 551,387 sq ft
- 1 Bennet Streetscore 67
Hotel · 498,000 sq ft
- 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
- 1545 Massachusetts Avenuescore —
College/University · 281,097 sq ft
See also: most efficient in Cambridge · biggest emitters
How does 75 Mount Auburn Street compare with other office buildings in Cambridge?
The latest disclosures cover 117 office buildings in Cambridge, out of 902 buildings citywide. 75 Mount Auburn Street's ENERGY STAR score of 79 compares with an average of 64 across the 94 that report a score; it scores higher than 64% of them and lower than 34%. Its site EUI of 85.0 kBtu/ft² is roughly in line with the average of 78.7 kBtu/ft².
At 345,571 sq ft, it is about 185% above the average floor area of 121,167 sq ft for those buildings. Its 1964 construction date is close to 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 75 Mount Auburn Street's energy performance changed over time?
BuildingCensus holds 10 Cambridge disclosures for 75 Mount Auburn Street, covering report years 2015–2024. Its ENERGY STAR score went from 99 in 2015 to 79 in 2024 (-20 points); its best year on file was 2016, at 100. Site EUI moved from 52.1 kBtu/ft² (2015) to 85.0 kBtu/ft² (2024), an 63% increase. Reported emissions went from 664 tCO₂e to 1,709 tCO₂e over the same span (up 157%).
What does an ENERGY STAR score of 79 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 79 means the building performs better than about 79% of its national peers. BuildingCensus bands the score into report-card grades; 79 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. 75 Mount Auburn Street's 85.0 kBtu/ft² across 345,571 sq ft works out to about 29.4 billion Btu (8,609 MWh-equivalent) in 2024. Its source EUI of 117.6 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 1,809,900 kWh of electricity, 160,219 therms of natural gas and 1,776 thousand gallons of water for the year.
Which law requires 75 Mount Auburn Street to report its energy use?
75 Mount Auburn Street 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:B1275:2024). 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
- 101 MAIN STREET· 341,830 sq ft · score 74 (B)
- 1 MAIN STREET· 332,808 sq ft · score 82 (B)
- 650 E Kendall Street· 328,136 sq ft · score 38 (D)
- 225 Binney St· 327,325 sq ft · score 84 (B)
- 245 First Street· 307,004 sq ft · EUI 158.2 kBtu/ft²
- Two Education Circle· 300,000 sq ft · score 89 (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 75 Mount Auburn Street's energy grade?
75 Mount Auburn Street scores 79 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 75 Mount Auburn Street use?
Its 2024 site energy-use intensity was 85.0 kBtu/ft² (117.6 kBtu/ft² source) across 345,571 sq ft, including 1,809,900 kWh of electricity and 160,219 therms of natural gas.
What are 75 Mount Auburn Street's carbon emissions?
75 Mount Auburn Street reported 1,709 tCO₂e of greenhouse-gas emissions for 2024.
Where is 75 Mount Auburn Street?
75 Mount Auburn Street is in Cambridge, Massachusetts. Its coordinates are 42.37260, -71.11860 (latitude, longitude), as published in the Building Energy Use Disclosure Ordinance (BEUDO) file.
How big is 75 Mount Auburn Street and when was it built?
75 Mount Auburn Street has 345,571 sq ft of gross floor area, as reported in its 2024 disclosure. The disclosure lists 1964 as its year built. It is classed as office.
Is 75 Mount Auburn Street 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, “75 Mount Auburn Street, Cambridge, Massachusetts — 2024 benchmarking disclosure”, https://buildingcensus.com/buildings/cambridge/75-mount-auburn-street-ee0f7408 (data as of October 2, 2026).