820 Massachusetts Avenue
Other in Cambridge, MA
At a glance
820 Massachusetts Avenue is a 114,693-square-foot other building in Cambridge, Massachusetts, built in 1883. In its 2024 Cambridge benchmarking disclosure it reported a site energy-use intensity of 46.1 kBtu/ft² and 323 tCO₂e of greenhouse-gas emissions.
BEUDO · reporting year 2024
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | — |
| Site EUI | 46.1 kBtu/ft² |
| Source EUI | 82.3 kBtu/ft² |
| GHG emissions | 323 tCO₂e |
| GHG intensity | — |
| Electricity | 651,223 kWh |
| Natural gas | 30,613 therms |
| Water use | 1,738 kgal |
| Gross floor area | 114,693 sq ft |
| Source record | cambridge:B1820:2024 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2024latest | — | 46.1 kBtu/ft² | 323 tCO₂e | |
| 2023 | — | 40.3 kBtu/ft² | 287 tCO₂e | |
| 2022 | — | 46.1 kBtu/ft² | 323 tCO₂e | |
| 2021 | — | 47.8 kBtu/ft² | 333 tCO₂e | |
| 2020 | — | — | 147 tCO₂e | |
| 2019 | — | 63.6 kBtu/ft² | 420 tCO₂e | |
| 2018 | — | 68.1 kBtu/ft² | 458 tCO₂e | |
| 2017 | — | 69.0 kBtu/ft² | 474 tCO₂e | |
| 2016 | — | 61.7 kBtu/ft² | 425 tCO₂e | |
| 2015 | — | 72.2 kBtu/ft² | 505 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
CAMBRIDGE FAMILY YMCA AFFORDABLE
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Location
- Address
- 820 Massachusetts Avenue
- City
- Cambridge
- State
- Massachusetts
- Coordinates
- 42.36680, -71.10670
Within ~1 km
Nearby benchmarked buildings
- 459 Broadwayscore 71
K-12 School · 403,393 sq ft
- 70 PACIFIC STscore —
College/University · 362,687 sq ft
- 45 Sidney Streetscore —
Laboratory · 277,000 sq ft
- 300 Massachusetts Avescore —
Laboratory · 274,456 sq ft
- 235 ALBANY STscore —
College/University · 252,835 sq ft
- 129 Franklin Streetscore 98
Multifamily Housing · 243,166 sq ft
See also: most efficient in Cambridge · biggest emitters
How does 820 Massachusetts Avenue 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 46.1 kBtu/ft² is about 11% above the average of 41.7 kBtu/ft² — it uses more energy per square foot than the typical building in that group.
At 114,693 sq ft, it is about 251% above the average floor area of 32,646 sq ft for those buildings. It was built in 1883, 47 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 820 Massachusetts Avenue's energy performance changed over time?
BuildingCensus holds 10 Cambridge disclosures for 820 Massachusetts Avenue, covering report years 2015–2024. Site EUI moved from 72.2 kBtu/ft² (2015) to 46.1 kBtu/ft² (2024), a 36% decrease. Reported emissions went from 505 tCO₂e to 323 tCO₂e over the same span (down 36%).
What does a site EUI of 46.1 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. 820 Massachusetts Avenue's 46.1 kBtu/ft² across 114,693 sq ft works out to about 5.3 billion Btu (1,550 MWh-equivalent) in 2024. Its source EUI of 82.3 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 651,223 kWh of electricity, 30,613 therms of natural gas and 1,738 thousand gallons of water for the year.
Which law requires 820 Massachusetts Avenue to report its energy use?
820 Massachusetts Avenue 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:B1820:2024). 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
- 50 Follen Street· 57,738 sq ft · EUI 13.8 kBtu/ft²
- 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)
- 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 820 Massachusetts Avenue's energy grade?
820 Massachusetts Avenue did not report an ENERGY STAR score in its 2024 disclosure, but its site energy-use intensity was 46.1 kBtu/ft².
How much energy does 820 Massachusetts Avenue use?
Its 2024 site energy-use intensity was 46.1 kBtu/ft² (82.3 kBtu/ft² source) across 114,693 sq ft, including 651,223 kWh of electricity and 30,613 therms of natural gas.
What are 820 Massachusetts Avenue's carbon emissions?
820 Massachusetts Avenue reported 323 tCO₂e of greenhouse-gas emissions for 2024.
Where is 820 Massachusetts Avenue?
820 Massachusetts Avenue is in Cambridge, Massachusetts. Its coordinates are 42.36680, -71.10670 (latitude, longitude), as published in the Building Energy Use Disclosure Ordinance (BEUDO) file.
How big is 820 Massachusetts Avenue and when was it built?
820 Massachusetts Avenue has 114,693 sq ft of gross floor area, as reported in its 2024 disclosure. The disclosure lists 1883 as its year built. It is classed as other.
Is 820 Massachusetts Avenue 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, “820 Massachusetts Avenue, Cambridge, Massachusetts — 2024 benchmarking disclosure”, https://buildingcensus.com/buildings/cambridge/820-massachusetts-avenue-37ee4cf2 (data as of October 2, 2026).