50 Broadway
Hotel in Cambridge, MA
At a glance
50 Broadway is a 334,260-square-foot hotel in Cambridge, Massachusetts, built in 1986. In its 2024 Cambridge benchmarking disclosure it reported an ENERGY STAR score of 22 out of 100 (grade D), a site energy-use intensity of 145.8 kBtu/ft² and 2,877 tCO₂e of greenhouse-gas emissions. That score is higher than 11% of the 18 scored hotel buildings in Cambridge.
BEUDO · reporting year 2024
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | 22 (band D) |
| Site EUI | 145.8 kBtu/ft² |
| Source EUI | 232.1 kBtu/ft² |
| GHG emissions | 2,877 tCO₂e |
| GHG intensity | — |
| Electricity | 4,417,580 kWh |
| Natural gas | 336,789 therms |
| Water use | 9,451 kgal |
| Gross floor area | 334,260 sq ft |
| Source record | cambridge:B1663:2024 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2024latest | 22 | +2 | 145.8 kBtu/ft² | 2,877 tCO₂e |
| 2023 | 20 | -11 | 147.0 kBtu/ft² | 2,910 tCO₂e |
| 2022 | 31 | -15 | 134.4 kBtu/ft² | 2,657 tCO₂e |
| 2021 | 46 | -16 | 117.7 kBtu/ft² | 2,332 tCO₂e |
| 2020 | 62 | +52 | 103.9 kBtu/ft² | 2,040 tCO₂e |
| 2019 | 10 | -6 | 168.6 kBtu/ft² | 3,228 tCO₂e |
| 2018 | 16 | -4 | 137.6 kBtu/ft² | 2,803 tCO₂e |
| 2017 | 20 | -4 | 125.3 kBtu/ft² | 2,675 tCO₂e |
| 2016 | 24 | -2 | 118.3 kBtu/ft² | 2,546 tCO₂e |
| 2015 | 26 | 117.7 kBtu/ft² | 2,569 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
No owning organisation shown. Names of private individuals in the disclosure are not published here.
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Location
- Address
- 50 Broadway
- City
- Cambridge
- State
- Massachusetts
- Coordinates
- 42.36300, -71.08590
Within ~1 km
Nearby benchmarked buildings
- 50-60 Binney STscore —
Mixed Use Property · 532,739 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
- 32 VASSAR STscore —
College/University · 464,005 sq ft
See also: most efficient in Cambridge · biggest emitters
How does 50 Broadway compare with other hotel buildings in Cambridge?
The latest disclosures cover 19 hotel buildings in Cambridge, out of 902 buildings citywide. 50 Broadway's ENERGY STAR score of 22 compares with an average of 55 across the 18 that report a score; it scores higher than 11% of them and lower than 83%. Its site EUI of 145.8 kBtu/ft² is about 47% above the average of 98.9 kBtu/ft² — it uses more energy per square foot than the typical building in that group.
At 334,260 sq ft, it is about 129% above the average floor area of 146,134 sq ft for those buildings. It was built in 1986, 3 years earlier than the group's average year built (1990). Across all 24 jurisdictions BuildingCensus covers, the 3,812 hotel buildings average an ENERGY STAR score of 65 and a site EUI of 77.8 kBtu/ft².
How has 50 Broadway's energy performance changed over time?
BuildingCensus holds 10 Cambridge disclosures for 50 Broadway, covering report years 2015–2024. Its ENERGY STAR score went from 26 in 2015 to 22 in 2024 (-4 points); its best year on file was 2020, at 62. Site EUI moved from 117.7 kBtu/ft² (2015) to 145.8 kBtu/ft² (2024), an 24% increase. Reported emissions went from 2,569 tCO₂e to 2,877 tCO₂e over the same span (up 12%).
What does an ENERGY STAR score of 22 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 22 means the building performs better than about 22% of its national peers. BuildingCensus bands the score into report-card grades; 22 falls in band D — lowest band (1–54). It sits 53 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. 50 Broadway's 145.8 kBtu/ft² across 334,260 sq ft works out to about 48.7 billion Btu (14,283 MWh-equivalent) in 2024. Its source EUI of 232.1 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 4,417,580 kWh of electricity, 336,789 therms of natural gas and 9,451 thousand gallons of water for the year.
Which law requires 50 Broadway to report its energy use?
50 Broadway 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:B1663:2024). 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 hotel buildings in Cambridge
- 40 Edwin Land Blvd· 321,771 sq ft · score 76 (B)
- 20 Sidney St· 202,615 sq ft · score 35 (D)
- 6 Cambridge Center· 181,700 sq ft · score 66 (C)
- 25 Edwin H Land Blvd.· 153,627 sq ft · score 34 (D)
- 16 Garden St.· 134,200 sq ft · score 94 (A)
- 777 Memorial Drive· 105,000 sq ft · score 72 (B)
- 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 Broadway's energy grade?
50 Broadway scores 22 out of 100 on ENERGY STAR — band D, lowest band (1–54) — in its 2024 Cambridge disclosure. Scores are national percentiles against similar buildings; 75+ qualifies for ENERGY STAR certification.
How much energy does 50 Broadway use?
Its 2024 site energy-use intensity was 145.8 kBtu/ft² (232.1 kBtu/ft² source) across 334,260 sq ft, including 4,417,580 kWh of electricity and 336,789 therms of natural gas.
What are 50 Broadway's carbon emissions?
50 Broadway reported 2,877 tCO₂e of greenhouse-gas emissions for 2024.
Where is 50 Broadway?
50 Broadway is in Cambridge, Massachusetts. Its coordinates are 42.36300, -71.08590 (latitude, longitude), as published in the Building Energy Use Disclosure Ordinance (BEUDO) file.
How big is 50 Broadway and when was it built?
50 Broadway has 334,260 sq ft of gross floor area, as reported in its 2024 disclosure. The disclosure lists 1986 as its year built. It is classed as hotel.
Is 50 Broadway 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 Broadway, Cambridge, Massachusetts — 2024 benchmarking disclosure”, https://buildingcensus.com/buildings/cambridge/50-broadway-9c0d358e (data as of October 2, 2026).