20 AMES ST
College/University in Cambridge, MA
At a glance
20 AMES ST is a 120,331-square-foot college/university building in Cambridge, Massachusetts, built in 1984. In its 2024 Cambridge benchmarking disclosure it reported a site energy-use intensity of 162.0 kBtu/ft² and 1,282 tCO₂e of greenhouse-gas emissions.
BEUDO · reporting year 2024
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | — |
| Site EUI | 162.0 kBtu/ft² |
| Source EUI | 273.7 kBtu/ft² |
| GHG emissions | 1,282 tCO₂e |
| GHG intensity | — |
| Electricity | 2,058,527 kWh |
| Water use | 1,559 kgal |
| Gross floor area | 120,331 sq ft |
| Source record | cambridge:B1474:2024 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2024latest | — | 162.0 kBtu/ft² | 1,282 tCO₂e | |
| 2023 | — | 146.7 kBtu/ft² | 1,161 tCO₂e | |
| 2022 | — | 156.4 kBtu/ft² | 1,228 tCO₂e | |
| 2021 | — | 152.1 kBtu/ft² | 1,197 tCO₂e | |
| 2020 | — | 154.7 kBtu/ft² | 1,202 tCO₂e | |
| 2019 | — | 190.0 kBtu/ft² | 1,430 tCO₂e | |
| 2018 | — | 186.9 kBtu/ft² | 1,435 tCO₂e | |
| 2017 | — | 93.6 kBtu/ft² | 801 tCO₂e | |
| 2016 | — | 107.9 kBtu/ft² | 904 tCO₂e | |
| 2015 | — | 143.2 kBtu/ft² | 1,149 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
MASSACHUSETTS INSTITUTE OF TECHNOLOGY
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Location
- Address
- 20 AMES ST
- City
- Cambridge
- State
- Massachusetts
- Coordinates
- 42.36080, -71.08760
Within ~1 km
Nearby benchmarked buildings
- 325 Main Stscore 87
Office · 494,512 sq ft
- 145 Broadwayscore 91
Office · 490,000 sq ft
- 314 Main St.score 80
Office · 482,220 sq ft
- 303 Binney Stscore —
Laboratory · 480,000 sq ft
- 32 VASSAR STscore —
College/University · 464,005 sq ft
- 555 Technology Squarescore —
Laboratory · 457,000 sq ft
See also: most efficient in Cambridge · biggest emitters
How does 20 AMES ST compare with other college/university buildings in Cambridge?
The latest disclosures cover 203 college/university buildings in Cambridge, out of 902 buildings citywide. Its site EUI of 162.0 kBtu/ft² is roughly in line with the average of 154.3 kBtu/ft².
At 120,331 sq ft, it is about 24% above the average floor area of 96,964 sq ft for those buildings. It was built in 1984, 35 years later than the group's average year built (1949). Across all 24 jurisdictions BuildingCensus covers, the 2,113 college/university buildings average an ENERGY STAR score of 68 and a site EUI of 98.7 kBtu/ft².
How has 20 AMES ST's energy performance changed over time?
BuildingCensus holds 10 Cambridge disclosures for 20 AMES ST, covering report years 2015–2024. Site EUI moved from 143.2 kBtu/ft² (2015) to 162.0 kBtu/ft² (2024), an 13% increase. Reported emissions went from 1,149 tCO₂e to 1,282 tCO₂e over the same span (up 12%).
What does a site EUI of 162.0 kBtu/ft² mean?
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. 20 AMES ST's 162.0 kBtu/ft² across 120,331 sq ft works out to about 19.5 billion Btu (5,713 MWh-equivalent) in 2024. Its source EUI of 273.7 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 2,058,527 kWh of electricity and 1,559 thousand gallons of water for the year.
Which law requires 20 AMES ST to report its energy use?
20 AMES ST 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:B1474:2024). 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 college/university buildings in Cambridge
- 190 ALBANY ST· 120,137 sq ft · EUI 178.9 kBtu/ft²
- 45 Quincy St· 119,575 sq ft · EUI 172.6 kBtu/ft²
- 77 MASSACHUSETTS AVE· 119,055 sq ft · EUI 188.8 kBtu/ft²
- 38 Oxford St· 118,059 sq ft · EUI 32.7 kBtu/ft²
- 100 Edwin Land Blvd· 117,919 sq ft · EUI 111.5 kBtu/ft²
- 21 AMES ST· 116,490 sq ft · EUI 405.3 kBtu/ft²
- College/University buildings in Cambridge· 203 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 20 AMES ST's energy grade?
20 AMES ST did not report an ENERGY STAR score in its 2024 disclosure, but its site energy-use intensity was 162.0 kBtu/ft².
How much energy does 20 AMES ST use?
Its 2024 site energy-use intensity was 162.0 kBtu/ft² (273.7 kBtu/ft² source) across 120,331 sq ft, including 2,058,527 kWh of electricity.
What are 20 AMES ST's carbon emissions?
20 AMES ST reported 1,282 tCO₂e of greenhouse-gas emissions for 2024.
Where is 20 AMES ST?
20 AMES ST is in Cambridge, Massachusetts. Its coordinates are 42.36080, -71.08760 (latitude, longitude), as published in the Building Energy Use Disclosure Ordinance (BEUDO) file.
How big is 20 AMES ST and when was it built?
20 AMES ST has 120,331 sq ft of gross floor area, as reported in its 2024 disclosure. The disclosure lists 1984 as its year built. It is classed as college/university.
Is 20 AMES ST 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, “20 AMES ST, Cambridge, Massachusetts — 2024 benchmarking disclosure”, https://buildingcensus.com/buildings/cambridge/20-ames-st-2dc0eea4 (data as of October 2, 2026).