20 Dewolfe St
Multifamily Housing in Cambridge, MA
At a glance
20 Dewolfe St is a 65,035-square-foot multifamily housing building in Cambridge, Massachusetts, built in 1991. In its 2024 Cambridge benchmarking disclosure it reported an ENERGY STAR score of 12 out of 100 (grade D), a site energy-use intensity of 79.4 kBtu/ft² and 315 tCO₂e of greenhouse-gas emissions. That score is higher than 3% of the 155 scored multifamily housing buildings in Cambridge.
BEUDO · reporting year 2024
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | 12 (band D) |
| Site EUI | 79.4 kBtu/ft² |
| Source EUI | 140.6 kBtu/ft² |
| GHG emissions | 315 tCO₂e |
| GHG intensity | — |
| Electricity | 623,092 kWh |
| Natural gas | 30,401 therms |
| Water use | 2,986 kgal |
| Gross floor area | 65,035 sq ft |
| Source record | cambridge:B1219:2024 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2024latest | 12 | -14 | 79.4 kBtu/ft² | 315 tCO₂e |
| 2023 | 26 | +17 | 64.4 kBtu/ft² | 144 tCO₂e |
| 2022 | 9 | -8 | 86.1 kBtu/ft² | 339 tCO₂e |
| 2021 | 17 | -6 | 79.1 kBtu/ft² | 311 tCO₂e |
| 2020 | 23 | +14 | 77.0 kBtu/ft² | 298 tCO₂e |
| 2019 | 9 | +1 | 93.9 kBtu/ft² | 350 tCO₂e |
| 2018 | 8 | +1 | 96.5 kBtu/ft² | 370 tCO₂e |
| 2017 | 7 | -1 | 91.7 kBtu/ft² | 364 tCO₂e |
| 2016 | 8 | +4 | 89.7 kBtu/ft² | 356 tCO₂e |
| 2015 | 4 | 102.6 kBtu/ft² | 410 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
PRESIDENT & FELLOWS OF HARVARD COLLEGE
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Location
- Address
- 20 Dewolfe St
- City
- Cambridge
- State
- Massachusetts
- Coordinates
- 42.37010, -71.11640
Within ~1 km
Nearby benchmarked buildings
- 1 Bennet Streetscore 67
Hotel · 498,000 sq ft
- 900 Memorial Drivescore 47
Multifamily Housing · 450,849 sq ft
- 459 Broadwayscore 71
K-12 School · 403,393 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
See also: most efficient in Cambridge · biggest emitters
How does 20 Dewolfe St compare with other multifamily housing buildings in Cambridge?
The latest disclosures cover 187 multifamily housing buildings in Cambridge, out of 902 buildings citywide. 20 Dewolfe St's ENERGY STAR score of 12 compares with an average of 75 across the 155 that report a score; it scores higher than 3% of them and lower than 96%. Its site EUI of 79.4 kBtu/ft² is about 40% above the average of 56.9 kBtu/ft² — it uses more energy per square foot than the typical building in that group.
At 65,035 sq ft, it is about half of the average floor area of 132,415 sq ft for those buildings. It was built in 1991, 18 years later than the group's average year built (1973). Across all 24 jurisdictions BuildingCensus covers, the 59,945 multifamily housing buildings average an ENERGY STAR score of 70 and a site EUI of 59.0 kBtu/ft².
How has 20 Dewolfe St's energy performance changed over time?
BuildingCensus holds 10 Cambridge disclosures for 20 Dewolfe St, covering report years 2015–2024. Its ENERGY STAR score went from 4 in 2015 to 12 in 2024 (+8 points); its best year on file was 2023, at 26. Site EUI moved from 102.6 kBtu/ft² (2015) to 79.4 kBtu/ft² (2024), a 23% decrease. Reported emissions went from 410 tCO₂e to 315 tCO₂e over the same span (down 23%).
What does an ENERGY STAR score of 12 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 12 means the building performs better than about 12% of its national peers. BuildingCensus bands the score into report-card grades; 12 falls in band D — lowest band (1–54). It sits 63 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. 20 Dewolfe St's 79.4 kBtu/ft² across 65,035 sq ft works out to about 5.2 billion Btu (1,513 MWh-equivalent) in 2024. Its source EUI of 140.6 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 623,092 kWh of electricity, 30,401 therms of natural gas and 2,986 thousand gallons of water for the year.
Which law requires 20 Dewolfe St to report its energy use?
20 Dewolfe 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:B1219:2024). 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 multifamily housing buildings in Cambridge
- 16-18A Forest Street· 64,440 sq ft · score 88 (A)
- 1648-1654 Massachusetts Avenue· 63,287 sq ft · score 41 (D)
- 130 Mount Auburn Street· 63,208 sq ft · score 17 (D)
- 1-33 Henry Street, 2-26 Chestnut Street, 276-294 Sydney Street· 60,737 sq ft · score 100 (A)
- 8-10 Lancaster St· 59,900 sq ft · score 72 (B)
- 881 Mass. Avenue· 59,746 sq ft · score 93 (A)
- Multifamily Housing buildings in Cambridge· 187 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 Dewolfe St's energy grade?
20 Dewolfe St scores 12 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 20 Dewolfe St use?
Its 2024 site energy-use intensity was 79.4 kBtu/ft² (140.6 kBtu/ft² source) across 65,035 sq ft, including 623,092 kWh of electricity and 30,401 therms of natural gas.
What are 20 Dewolfe St's carbon emissions?
20 Dewolfe St reported 315 tCO₂e of greenhouse-gas emissions for 2024.
Where is 20 Dewolfe St?
20 Dewolfe St is in Cambridge, Massachusetts. Its coordinates are 42.37010, -71.11640 (latitude, longitude), as published in the Building Energy Use Disclosure Ordinance (BEUDO) file.
How big is 20 Dewolfe St and when was it built?
20 Dewolfe St has 65,035 sq ft of gross floor area, as reported in its 2024 disclosure. The disclosure lists 1991 as its year built. It is classed as multifamily housing.
Is 20 Dewolfe 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 Dewolfe St, Cambridge, Massachusetts — 2024 benchmarking disclosure”, https://buildingcensus.com/buildings/cambridge/20-dewolfe-st-51cb7517 (data as of October 2, 2026).