50 Follen Street
Other in Cambridge, MA
At a glance
50 Follen Street is a 57,738-square-foot other building in Cambridge, Massachusetts, built in 1925. In its 2024 Cambridge benchmarking disclosure it reported a site energy-use intensity of 13.8 kBtu/ft² and 58 tCO₂e of greenhouse-gas emissions.
BEUDO · reporting year 2024
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | — |
| Site EUI | 13.8 kBtu/ft² |
| Source EUI | 38.7 kBtu/ft² |
| GHG emissions | 58 tCO₂e |
| GHG intensity | — |
| Electricity | 233,844 kWh |
| Gross floor area | 57,738 sq ft |
| Source record | cambridge:B1417:2024 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2024latest | — | 13.8 kBtu/ft² | 58 tCO₂e | |
| 2023 | — | 14.0 kBtu/ft² | 58 tCO₂e | |
| 2022 | — | 15.0 kBtu/ft² | 62 tCO₂e | |
| 2021 | — | — | 0 tCO₂e | |
| 2020 | — | — | 0 tCO₂e | |
| 2019 | — | — | 0 tCO₂e | |
| 2018 | — | — | 0 tCO₂e | |
| 2017 | — | — | 0 tCO₂e | |
| 2016 | — | — | 0 tCO₂e | |
| 2015 | — | — | 0 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
Condo Building - Multiple Owners
Own or manage this building? Claim it to correct the record and get compliance alerts.
Location
- Address
- 50 Follen Street
- City
- Cambridge
- State
- Massachusetts
- Coordinates
- 42.37810, -71.12130
Within ~1 km
Nearby benchmarked buildings
- 52 Oxford Stscore —
College/University · 551,387 sq ft
- 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
See also: most efficient in Cambridge · biggest emitters
How does 50 Follen Street compare with other other buildings in Cambridge?
The latest disclosures cover 9 other buildings in Cambridge, out of 902 buildings citywide. Its site EUI of 13.8 kBtu/ft² is about 67% below the average of 41.7 kBtu/ft² — it uses less energy per square foot than the typical building in that group.
At 57,738 sq ft, it is about 77% above the average floor area of 32,646 sq ft for those buildings. It was built in 1925, 5 years earlier than the group's average year built (1930). Across all 24 jurisdictions BuildingCensus covers, the 1,327 other buildings average an ENERGY STAR score of 60 and a site EUI of 63.3 kBtu/ft².
How has 50 Follen Street's energy performance changed over time?
BuildingCensus holds 10 Cambridge disclosures for 50 Follen Street, covering report years 2015–2024. Site EUI moved from 15.0 kBtu/ft² (2022) to 13.8 kBtu/ft² (2024), a 8% decrease.
What does a site EUI of 13.8 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. 50 Follen Street's 13.8 kBtu/ft² across 57,738 sq ft works out to about 0.8 billion Btu (234 MWh-equivalent) in 2024. Its source EUI of 38.7 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 233,844 kWh of electricity for the year.
Which law requires 50 Follen Street to report its energy use?
50 Follen 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:B1417:2024). 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 other buildings in Cambridge
- 115-135 Fawcett Street· 35,617 sq ft · EUI 4.3 kBtu/ft²
- 689 Mass Ave· 27,492 sq ft · EUI 44.3 kBtu/ft²
- 28 JFK Street· 25,668 sq ft · EUI 62.2 kBtu/ft²
- 40 Brattle Street· 12,203 sq ft · EUI 72.4 kBtu/ft²
- 689 Massachusetts Ave· 7,664 sq ft · score 36 (D)
- 169 Bent Street· 7,140 sq ft · EUI 24.8 kBtu/ft²
- 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 50 Follen Street's energy grade?
50 Follen Street did not report an ENERGY STAR score in its 2024 disclosure, but its site energy-use intensity was 13.8 kBtu/ft².
How much energy does 50 Follen Street use?
Its 2024 site energy-use intensity was 13.8 kBtu/ft² (38.7 kBtu/ft² source) across 57,738 sq ft, including 233,844 kWh of electricity.
What are 50 Follen Street's carbon emissions?
50 Follen Street reported 58 tCO₂e of greenhouse-gas emissions for 2024.
Where is 50 Follen Street?
50 Follen Street is in Cambridge, Massachusetts. Its coordinates are 42.37810, -71.12130 (latitude, longitude), as published in the Building Energy Use Disclosure Ordinance (BEUDO) file.
How big is 50 Follen Street and when was it built?
50 Follen Street has 57,738 sq ft of gross floor area, as reported in its 2024 disclosure. The disclosure lists 1925 as its year built. It is classed as other.
Is 50 Follen 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, “50 Follen Street, Cambridge, Massachusetts — 2024 benchmarking disclosure”, https://buildingcensus.com/buildings/cambridge/50-follen-street-de7d430c (data as of October 2, 2026).