1221 Cambridge St
Multifamily Housing in Cambridge, MA
At a glance
1221 Cambridge St is a 102,610-square-foot multifamily housing building in Cambridge, Massachusetts, built in 1974. In its 2024 Cambridge benchmarking disclosure it reported an ENERGY STAR score of 88 out of 100 (grade A), a site energy-use intensity of 55.9 kBtu/ft² and 340 tCO₂e of greenhouse-gas emissions. That score is higher than 54% of the 155 scored multifamily housing buildings in Cambridge.
BEUDO · reporting year 2024
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | 88 (band A) |
| Site EUI | 55.9 kBtu/ft² |
| Source EUI | 90.0 kBtu/ft² |
| GHG emissions | 340 tCO₂e |
| GHG intensity | — |
| Electricity | 538,773 kWh |
| Natural gas | 38,962 therms |
| Water use | 2,836 kgal |
| Gross floor area | 102,610 sq ft |
| Source record | cambridge:B1796:2024 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2024latest | 88 | -4 | 55.9 kBtu/ft² | 340 tCO₂e |
| 2023 | 92 | -6 | 49.9 kBtu/ft² | 307 tCO₂e |
| 2022 | 98 | +2 | 38.8 kBtu/ft² | 245 tCO₂e |
| 2021 | 96 | +10 | 44.2 kBtu/ft² | 275 tCO₂e |
| 2020 | 86 | -1 | 60.9 kBtu/ft² | 364 tCO₂e |
| 2019 | 87 | -2 | 60.9 kBtu/ft² | 355 tCO₂e |
| 2018 | 89 | +3 | 58.8 kBtu/ft² | 352 tCO₂e |
| 2017 | 86 | -2 | 61.4 kBtu/ft² | 373 tCO₂e |
| 2016 | 88 | ±0 | 60.0 kBtu/ft² | 363 tCO₂e |
| 2015 | 88 | 62.9 kBtu/ft² | 382 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
INMAN CAST LLC,
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Location
- Address
- 1221 Cambridge St
- City
- Cambridge
- State
- Massachusetts
- Coordinates
- 42.37360, -71.09760
Within ~1 km
Nearby benchmarked buildings
- One Hampshire Stscore 5
Office · 361,302 sq ft
- 1493 Cambridge Streetscore 33
Hospital (General Medical & Surgical) · 360,250 sq ft
- 360 Binney Stscore —
Laboratory · 349,767 sq ft
- 850 Cambridge Stscore —
K-12 School · 276,000 sq ft
- One Kendall Squarescore —
Mixed Use Property · 246,793 sq ft
- 50 Hampshire Streetscore —
Office · 202,023 sq ft
See also: most efficient in Cambridge · biggest emitters
How does 1221 Cambridge St compare with other multifamily housing buildings in Cambridge?
The latest disclosures cover 187 multifamily housing buildings in Cambridge, out of 902 buildings citywide. 1221 Cambridge St's ENERGY STAR score of 88 compares with an average of 75 across the 155 that report a score; it scores higher than 54% of them and lower than 41%. Its site EUI of 55.9 kBtu/ft² is roughly in line with the average of 56.9 kBtu/ft² — it uses less energy per square foot than the typical building in that group.
At 102,610 sq ft, it is about 23% below 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 1221 Cambridge St's energy performance changed over time?
BuildingCensus holds 10 Cambridge disclosures for 1221 Cambridge St, covering report years 2015–2024. Its ENERGY STAR score was 88 in both 2015 and 2024. Site EUI moved from 62.9 kBtu/ft² (2015) to 55.9 kBtu/ft² (2024), a 11% decrease. Reported emissions went from 382 tCO₂e to 340 tCO₂e over the same span (down 11%).
What does an ENERGY STAR score of 88 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 88 means the building performs better than about 88% of its national peers. BuildingCensus bands the score into report-card grades; 88 falls in band A — high performer (85–100). Scores of 75 or higher meet the threshold for ENERGY STAR certification; certification itself is a separate, verified application that the disclosure does not record. 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. 1221 Cambridge St's 55.9 kBtu/ft² across 102,610 sq ft works out to about 5.7 billion Btu (1,681 MWh-equivalent) in 2024. Its source EUI of 90.0 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 538,773 kWh of electricity, 38,962 therms of natural gas and 2,836 thousand gallons of water for the year.
Which law requires 1221 Cambridge St to report its energy use?
1221 Cambridge 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:B1796:2024). 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
- 33 Rogers Street· 100,000 sq ft · score 88 (A)
- 165 Pleasant Street· 99,000 sq ft
- 240 Sidney St· 96,431 sq ft · score 92 (A)
- 3-5 Concord Avenue· 94,675 sq ft · score 83 (B)
- 41-43 Linnaean Street· 94,360 sq ft · score 52 (D)
- 295 Harvard Street· 93,900 sq ft · score 97 (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 1221 Cambridge St's energy grade?
1221 Cambridge St scores 88 out of 100 on ENERGY STAR — band A, high performer (85–100) — in its 2024 Cambridge disclosure. Scores are national percentiles against similar buildings; 75+ qualifies for ENERGY STAR certification.
How much energy does 1221 Cambridge St use?
Its 2024 site energy-use intensity was 55.9 kBtu/ft² (90.0 kBtu/ft² source) across 102,610 sq ft, including 538,773 kWh of electricity and 38,962 therms of natural gas.
What are 1221 Cambridge St's carbon emissions?
1221 Cambridge St reported 340 tCO₂e of greenhouse-gas emissions for 2024.
Where is 1221 Cambridge St?
1221 Cambridge St is in Cambridge, Massachusetts. Its coordinates are 42.37360, -71.09760 (latitude, longitude), as published in the Building Energy Use Disclosure Ordinance (BEUDO) file.
How big is 1221 Cambridge St and when was it built?
1221 Cambridge St has 102,610 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 1221 Cambridge 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, “1221 Cambridge St, Cambridge, Massachusetts — 2024 benchmarking disclosure”, https://buildingcensus.com/buildings/cambridge/1221-cambridge-st-d1af7b8e (data as of October 2, 2026).