1105 Mass. Ave
Multifamily Housing in Cambridge, MA
At a glance
1105 Mass. Ave is a 122,297-square-foot multifamily housing building in Cambridge, Massachusetts, built in 1974. In its 2024 Cambridge benchmarking disclosure it reported an ENERGY STAR score of 39 out of 100 (grade D), a site energy-use intensity of 64.2 kBtu/ft² and 511 tCO₂e of greenhouse-gas emissions. That score is higher than 11% of the 155 scored multifamily housing buildings in Cambridge.
BEUDO · reporting year 2024
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | 39 (band D) |
| Site EUI | 64.2 kBtu/ft² |
| Source EUI | 138.0 kBtu/ft² |
| GHG emissions | 511 tCO₂e |
| GHG intensity | — |
| Electricity | 1,446,138 kWh |
| Natural gas | 29,141 therms |
| Water use | 2,981 kgal |
| Gross floor area | 122,297 sq ft |
| Source record | cambridge:B1825:2024 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2024latest | 39 | +11 | 64.2 kBtu/ft² | 511 tCO₂e |
| 2023 | 28 | +1 | 70.5 kBtu/ft² | 555 tCO₂e |
| 2022 | 27 | -2 | 74.4 kBtu/ft² | 580 tCO₂e |
| 2021 | 29 | ±0 | 73.8 kBtu/ft² | 575 tCO₂e |
| 2020 | 29 | +16 | 71.9 kBtu/ft² | 560 tCO₂e |
| 2019 | 13 | -2 | 86.2 kBtu/ft² | 634 tCO₂e |
| 2018 | 15 | +8 | 86.2 kBtu/ft² | 659 tCO₂e |
| 2017 | 7 | -7 | 91.1 kBtu/ft² | 731 tCO₂e |
| 2016 | 14 | +2 | 78.5 kBtu/ft² | 630 tCO₂e |
| 2015 | 12 | 83.1 kBtu/ft² | 678 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
1105B, LLC
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Location
- Address
- 1105 Mass. Ave
- City
- Cambridge
- State
- Massachusetts
- Coordinates
- 42.37070, -71.11340
Within ~1 km
Nearby benchmarked buildings
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- 459 Broadwayscore 71
K-12 School · 403,393 sq ft
- 1 Oxford Stscore —
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- 1575 Cambridge Streetscore —
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- 75 Mount Auburn Streetscore 79
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- 1545 Massachusetts Avenuescore —
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See also: most efficient in Cambridge · biggest emitters
How does 1105 Mass. Ave compare with other multifamily housing buildings in Cambridge?
The latest disclosures cover 187 multifamily housing buildings in Cambridge, out of 902 buildings citywide. 1105 Mass. Ave's ENERGY STAR score of 39 compares with an average of 75 across the 155 that report a score; it scores higher than 11% of them and lower than 88%. Its site EUI of 64.2 kBtu/ft² is about 13% above the average of 56.9 kBtu/ft² — it uses more energy per square foot than the typical building in that group.
At 122,297 sq ft, it is roughly in line with the average floor area of 132,415 sq ft for those buildings. Its 1974 construction date is close to 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 1105 Mass. Ave's energy performance changed over time?
BuildingCensus holds 10 Cambridge disclosures for 1105 Mass. Ave, covering report years 2015–2024. Its ENERGY STAR score went from 12 in 2015 to 39 in 2024 (+27 points). Site EUI moved from 83.1 kBtu/ft² (2015) to 64.2 kBtu/ft² (2024), a 23% decrease. Reported emissions went from 678 tCO₂e to 511 tCO₂e over the same span (down 25%).
What does an ENERGY STAR score of 39 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 39 means the building performs better than about 39% of its national peers. BuildingCensus bands the score into report-card grades; 39 falls in band D — lowest band (1–54). It sits 36 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. 1105 Mass. Ave's 64.2 kBtu/ft² across 122,297 sq ft works out to about 7.9 billion Btu (2,301 MWh-equivalent) in 2024. Its source EUI of 138.0 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 1,446,138 kWh of electricity, 29,141 therms of natural gas and 2,981 thousand gallons of water for the year.
Which law requires 1105 Mass. Ave to report its energy use?
1105 Mass. Ave 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:B1825:2024). 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
- 19-21 Garden Street· 121,527 sq ft · score 84 (B)
- 929 Massachusetts Ave.· 120,066 sq ft · score 78 (B)
- 10 Magazine St.· 119,854 sq ft · score 97 (A)
- 247 Garden Street· 117,581 sq ft · score 86 (A)
- 5-8 Craigie Circle· 115,986 sq ft · score 100 (A)
- 29 Garden Street· 112,985 sq ft · score 61 (C)
- 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 1105 Mass. Ave's energy grade?
1105 Mass. Ave scores 39 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 1105 Mass. Ave use?
Its 2024 site energy-use intensity was 64.2 kBtu/ft² (138.0 kBtu/ft² source) across 122,297 sq ft, including 1,446,138 kWh of electricity and 29,141 therms of natural gas.
What are 1105 Mass. Ave's carbon emissions?
1105 Mass. Ave reported 511 tCO₂e of greenhouse-gas emissions for 2024.
Where is 1105 Mass. Ave?
1105 Mass. Ave is in Cambridge, Massachusetts. Its coordinates are 42.37070, -71.11340 (latitude, longitude), as published in the Building Energy Use Disclosure Ordinance (BEUDO) file.
How big is 1105 Mass. Ave and when was it built?
1105 Mass. Ave has 122,297 sq ft of gross floor area, as reported in its 2024 disclosure. The disclosure lists 1974 as its year built. It is classed as multifamily housing.
Is 1105 Mass. Ave 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, “1105 Mass. Ave, Cambridge, Massachusetts — 2024 benchmarking disclosure”, https://buildingcensus.com/buildings/cambridge/1105-mass-ave-cc1b86db (data as of October 2, 2026).