43 VASSAR ST
College/University in Cambridge, MA
At a glance
43 VASSAR ST is a 418,663-square-foot college/university building in Cambridge, Massachusetts, built in 2005. In its 2024 Cambridge benchmarking disclosure it reported a site energy-use intensity of 400.3 kBtu/ft² and 10,961 tCO₂e of greenhouse-gas emissions.
BEUDO · reporting year 2024
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | — |
| Site EUI | 400.3 kBtu/ft² |
| Source EUI | 597.6 kBtu/ft² |
| GHG emissions | 10,961 tCO₂e |
| GHG intensity | — |
| Electricity | 11,263,281 kWh |
| Natural gas | 56 therms |
| Gross floor area | 418,663 sq ft |
| Source record | cambridge:B1483:2024 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2024latest | — | 400.3 kBtu/ft² | 10,961 tCO₂e | |
| 2023 | — | 456.8 kBtu/ft² | 12,485 tCO₂e | |
| 2022 | — | 535.6 kBtu/ft² | 14,607 tCO₂e | |
| 2021 | — | 570.7 kBtu/ft² | 15,525 tCO₂e | |
| 2020 | — | 534.0 kBtu/ft² | 14,466 tCO₂e | |
| 2019 | — | 484.1 kBtu/ft² | 12,972 tCO₂e | |
| 2018 | — | 522.2 kBtu/ft² | 14,154 tCO₂e | |
| 2017 | — | 497.2 kBtu/ft² | 13,751 tCO₂e | |
| 2016 | — | 472.4 kBtu/ft² | 13,065 tCO₂e | |
| 2015 | — | 499.4 kBtu/ft² | 13,879 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
- 43 VASSAR ST
- City
- Cambridge
- State
- Massachusetts
- Coordinates
- 42.36230, -71.09160
Within ~1 km
Nearby benchmarked buildings
- 250 Massachusetts Avenuescore —
Laboratory · 1,362,662 sq ft
- 250 Massachusetts Avenuescore —
Laboratory · 517,029 sq ft
- 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
See also: most efficient in Cambridge · biggest emitters
How does 43 VASSAR 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 400.3 kBtu/ft² is about 159% above the average of 154.3 kBtu/ft² — it uses more energy per square foot than the typical building in that group.
At 418,663 sq ft, it is about 332% above the average floor area of 96,964 sq ft for those buildings. It was built in 2005, 56 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 43 VASSAR ST's energy performance changed over time?
BuildingCensus holds 10 Cambridge disclosures for 43 VASSAR ST, covering report years 2015–2024. Site EUI moved from 499.4 kBtu/ft² (2015) to 400.3 kBtu/ft² (2024), a 20% decrease. Reported emissions went from 13,879 tCO₂e to 10,961 tCO₂e over the same span (down 21%).
What does a site EUI of 400.3 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. 43 VASSAR ST's 400.3 kBtu/ft² across 418,663 sq ft works out to about 167.6 billion Btu (49,116 MWh-equivalent) in 2024. Its source EUI of 597.6 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 11,263,281 kWh of electricity and 56 therms of natural gas for the year.
Which law requires 43 VASSAR ST to report its energy use?
43 VASSAR 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:B1483:2024). 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
- 100 MAIN ST· 405,034 sq ft · EUI 22.6 kBtu/ft²
- 500 MAIN ST· 367,689 sq ft · EUI 393.1 kBtu/ft²
- 70 PACIFIC ST· 362,687 sq ft · EUI 67.0 kBtu/ft²
- 1 Oxford St· 355,836 sq ft · EUI 127.1 kBtu/ft²
- 1545 Massachusetts Avenue· 281,097 sq ft · EUI 87.2 kBtu/ft²
- 1586 Massachusetts Avenue· 262,602 sq ft · EUI 120.2 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 43 VASSAR ST's energy grade?
43 VASSAR ST did not report an ENERGY STAR score in its 2024 disclosure, but its site energy-use intensity was 400.3 kBtu/ft².
How much energy does 43 VASSAR ST use?
Its 2024 site energy-use intensity was 400.3 kBtu/ft² (597.6 kBtu/ft² source) across 418,663 sq ft, including 11,263,281 kWh of electricity and 56 therms of natural gas.
What are 43 VASSAR ST's carbon emissions?
43 VASSAR ST reported 10,961 tCO₂e of greenhouse-gas emissions for 2024.
Where is 43 VASSAR ST?
43 VASSAR ST is in Cambridge, Massachusetts. Its coordinates are 42.36230, -71.09160 (latitude, longitude), as published in the Building Energy Use Disclosure Ordinance (BEUDO) file.
How big is 43 VASSAR ST and when was it built?
43 VASSAR ST has 418,663 sq ft of gross floor area, as reported in its 2024 disclosure. The disclosure lists 2005 as its year built. It is classed as college/university.
Is 43 VASSAR 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, “43 VASSAR ST, Cambridge, Massachusetts — 2024 benchmarking disclosure”, https://buildingcensus.com/buildings/cambridge/43-vassar-st-2d2e168b (data as of October 2, 2026).