At a glance
124 Mount Auburn Street is a 196,007-square-foot office building in Cambridge, Massachusetts, built in 1984. In its 2024 Cambridge benchmarking disclosure it reported an ENERGY STAR score of 70 out of 100 (grade B), a site energy-use intensity of 52.0 kBtu/ft² and 736 tCO₂e of greenhouse-gas emissions. That score is higher than 46% of the 94 scored office buildings in Cambridge.
BEUDO · reporting year 2024
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | 70 (band B) |
| Site EUI | 52.0 kBtu/ft² |
| Source EUI | 145.5 kBtu/ft² |
| GHG emissions | 736 tCO₂e |
| GHG intensity | — |
| Electricity | 2,985,614 kWh |
| Water use | 1,661 kgal |
| Gross floor area | 196,007 sq ft |
| Source record | cambridge:B1306:2024 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2024latest | 70 | -5 | 52.0 kBtu/ft² | 736 tCO₂e |
| 2023 | 75 | +5 | 48.3 kBtu/ft² | 683 tCO₂e |
| 2022 | 70 | -2 | 52.4 kBtu/ft² | 737 tCO₂e |
| 2021 | 72 | -3 | 51.0 kBtu/ft² | 723 tCO₂e |
| 2020 | 75 | +12 | 50.8 kBtu/ft² | 706 tCO₂e |
| 2019 | 63 | ±0 | 67.1 kBtu/ft² | 864 tCO₂e |
| 2018 | 63 | +1 | 67.7 kBtu/ft² | 931 tCO₂e |
| 2017 | 62 | +3 | 68.1 kBtu/ft² | 1,000 tCO₂e |
| 2016 | 59 | +9 | 69.9 kBtu/ft² | 1,026 tCO₂e |
| 2015 | 50 | 78.4 kBtu/ft² | 1,179 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
PRESIDENT & FELLOWS OF HARVARD COLLEGE
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Location
- Address
- 124 Mount Auburn Street
- City
- Cambridge
- State
- Massachusetts
- Coordinates
- 42.37300, -71.12370
Within ~1 km
Nearby benchmarked buildings
- 1 Bennet Streetscore 67
Hotel · 498,000 sq ft
- 1 Oxford Stscore —
College/University · 355,836 sq ft
- 75 Mount Auburn Streetscore 79
Office · 345,571 sq ft
- 1545 Massachusetts Avenuescore —
College/University · 281,097 sq ft
- 1586 Massachusetts Avenuescore —
College/University · 262,602 sq ft
- 95 Dunster Stscore —
Residence Hall/Dormitory · 257,543 sq ft
See also: most efficient in Cambridge · biggest emitters
How does 124 Mount Auburn Street compare with other office buildings in Cambridge?
The latest disclosures cover 117 office buildings in Cambridge, out of 902 buildings citywide. 124 Mount Auburn Street's ENERGY STAR score of 70 compares with an average of 64 across the 94 that report a score; it scores higher than 46% of them and lower than 51%. Its site EUI of 52.0 kBtu/ft² is about 34% below the average of 78.7 kBtu/ft² — it uses less energy per square foot than the typical building in that group.
At 196,007 sq ft, it is about 62% above the average floor area of 121,167 sq ft for those buildings. It was built in 1984, 19 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 124 Mount Auburn Street's energy performance changed over time?
BuildingCensus holds 10 Cambridge disclosures for 124 Mount Auburn Street, covering report years 2015–2024. Its ENERGY STAR score went from 50 in 2015 to 70 in 2024 (+20 points); its best year on file was 2020, at 75. Site EUI moved from 78.4 kBtu/ft² (2015) to 52.0 kBtu/ft² (2024), a 34% decrease. Reported emissions went from 1,179 tCO₂e to 736 tCO₂e over the same span (down 38%).
What does an ENERGY STAR score of 70 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 70 means the building performs better than about 70% of its national peers. BuildingCensus bands the score into report-card grades; 70 falls in band B — above median (70–84). It sits 5 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. 124 Mount Auburn Street's 52.0 kBtu/ft² across 196,007 sq ft works out to about 10.2 billion Btu (2,987 MWh-equivalent) in 2024. Its source EUI of 145.5 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 2,985,614 kWh of electricity and 1,661 thousand gallons of water for the year.
Which law requires 124 Mount Auburn Street to report its energy use?
124 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:B1306:2024). 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
- 10, 12, 20-22-24, 36, 50, 60, 62, 64 Moulton Street· 193,217 sq ft · score 4 (D)
- 150 Broadway· 187,875 sq ft · score 66 (C)
- 105 Broadway (10 Cambridge Center)· 185,196 sq ft · score 87 (A)
- 150 2nd ST· 153,336 sq ft · EUI 261.5 kBtu/ft²
- 625 Mount Auburn St· 137,421 sq ft · score 41 (D)
- 141 Portland Street· 135,928 sq ft · score 50 (D)
- 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 124 Mount Auburn Street's energy grade?
124 Mount Auburn Street scores 70 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 124 Mount Auburn Street use?
Its 2024 site energy-use intensity was 52.0 kBtu/ft² (145.5 kBtu/ft² source) across 196,007 sq ft, including 2,985,614 kWh of electricity.
What are 124 Mount Auburn Street's carbon emissions?
124 Mount Auburn Street reported 736 tCO₂e of greenhouse-gas emissions for 2024.
Where is 124 Mount Auburn Street?
124 Mount Auburn Street is in Cambridge, Massachusetts. Its coordinates are 42.37300, -71.12370 (latitude, longitude), as published in the Building Energy Use Disclosure Ordinance (BEUDO) file.
How big is 124 Mount Auburn Street and when was it built?
124 Mount Auburn Street has 196,007 sq ft of gross floor area, as reported in its 2024 disclosure. The disclosure lists 1984 as its year built. It is classed as office.
Is 124 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, “124 Mount Auburn Street, Cambridge, Massachusetts — 2024 benchmarking disclosure”, https://buildingcensus.com/buildings/cambridge/124-mount-auburn-street-cd503661 (data as of October 2, 2026).