At a glance
1000 Massachusetts Ave is a 108,411-square-foot office building in Cambridge, Massachusetts, built in 1982. 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 60.2 kBtu/ft² and 407 tCO₂e of greenhouse-gas emissions. That score is higher than 83% of the 94 scored office buildings in Cambridge.
BEUDO · reporting year 2024
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | 88 (band A) |
| Site EUI | 60.2 kBtu/ft² |
| Source EUI | 114.2 kBtu/ft² |
| GHG emissions | 407 tCO₂e |
| GHG intensity | — |
| Electricity | 926,767 kWh |
| Natural gas | 33,606 therms |
| Water use | 552 kgal |
| Gross floor area | 108,411 sq ft |
| Source record | cambridge:B1136:2024 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2024latest | 88 | -4 | 60.2 kBtu/ft² | 407 tCO₂e |
| 2023 | 92 | +3 | 54.9 kBtu/ft² | 367 tCO₂e |
| 2022 | 89 | +2 | 58.2 kBtu/ft² | 390 tCO₂e |
| 2021 | 87 | -4 | 60.5 kBtu/ft² | 412 tCO₂e |
| 2020 | 91 | +5 | 56.1 kBtu/ft² | 373 tCO₂e |
| 2019 | 86 | +4 | 64.2 kBtu/ft² | 411 tCO₂e |
| 2018 | 82 | -18 | 70.6 kBtu/ft² | 467 tCO₂e |
| 2017 | 100 | 39.2 kBtu/ft² | 668 tCO₂e | |
| 2016 | — | — | 0 tCO₂e | |
| 2015 | 28 | 97.8 kBtu/ft² | 719 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
1000 MASSACHUSETTS AVE MA LLC
Own or manage this building? Claim it to correct the record and get compliance alerts.
Location
- Address
- 1000 Massachusetts Ave
- City
- Cambridge
- State
- Massachusetts
- Coordinates
- 42.36880, -71.11090
Within ~1 km
Nearby benchmarked buildings
- 900 Memorial Drivescore 47
Multifamily Housing · 450,849 sq ft
- 459 Broadwayscore 71
K-12 School · 403,393 sq ft
- 1493 Cambridge Streetscore 33
Hospital (General Medical & Surgical) · 360,250 sq ft
- 1 Oxford Stscore —
College/University · 355,836 sq ft
- 1575 Cambridge Streetscore —
Outpatient Rehabilitation/Physical Therapy · 352,622 sq ft
- 75 Mount Auburn Streetscore 79
Office · 345,571 sq ft
See also: most efficient in Cambridge · biggest emitters
How does 1000 Massachusetts Ave compare with other office buildings in Cambridge?
The latest disclosures cover 117 office buildings in Cambridge, out of 902 buildings citywide. 1000 Massachusetts Ave's ENERGY STAR score of 88 compares with an average of 64 across the 94 that report a score; it scores higher than 83% of them and lower than 14%. Its site EUI of 60.2 kBtu/ft² is about 24% below the average of 78.7 kBtu/ft² — it uses less energy per square foot than the typical building in that group.
At 108,411 sq ft, it is about 11% below the average floor area of 121,167 sq ft for those buildings. It was built in 1982, 17 years later than the group's average year built (1965). Across all 24 jurisdictions BuildingCensus covers, the 15,264 office buildings average an ENERGY STAR score of 73 and a site EUI of 59.3 kBtu/ft².
How has 1000 Massachusetts Ave's energy performance changed over time?
BuildingCensus holds 10 Cambridge disclosures for 1000 Massachusetts Ave, covering report years 2015–2024. Its ENERGY STAR score went from 28 in 2015 to 88 in 2024 (+60 points); its best year on file was 2017, at 100. Site EUI moved from 97.8 kBtu/ft² (2015) to 60.2 kBtu/ft² (2024), a 38% decrease. Reported emissions went from 719 tCO₂e to 407 tCO₂e over the same span (down 43%).
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. 1000 Massachusetts Ave's 60.2 kBtu/ft² across 108,411 sq ft works out to about 6.5 billion Btu (1,913 MWh-equivalent) in 2024. Its source EUI of 114.2 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 926,767 kWh of electricity, 33,606 therms of natural gas and 552 thousand gallons of water for the year.
Which law requires 1000 Massachusetts Ave to report its energy use?
1000 Massachusetts 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:B1136:2024). 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 office buildings in Cambridge
- 10 Fawcett St· 107,681 sq ft · score 70 (B)
- 10 Fawcett St· 107,681 sq ft · score 91 (A)
- 350 Mass Avenue· 103,825 sq ft · EUI 38.0 kBtu/ft²
- 1035 Cambridge Street· 102,807 sq ft · score 68 (C)
- 60 Oxford Street· 97,036 sq ft · score 9 (D)
- 1 Alewife Center· 89,875 sq ft
- Office buildings in Cambridge· 117 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 1000 Massachusetts Ave's energy grade?
1000 Massachusetts Ave 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 1000 Massachusetts Ave use?
Its 2024 site energy-use intensity was 60.2 kBtu/ft² (114.2 kBtu/ft² source) across 108,411 sq ft, including 926,767 kWh of electricity and 33,606 therms of natural gas.
What are 1000 Massachusetts Ave's carbon emissions?
1000 Massachusetts Ave reported 407 tCO₂e of greenhouse-gas emissions for 2024.
Where is 1000 Massachusetts Ave?
1000 Massachusetts Ave is in Cambridge, Massachusetts. Its coordinates are 42.36880, -71.11090 (latitude, longitude), as published in the Building Energy Use Disclosure Ordinance (BEUDO) file.
How big is 1000 Massachusetts Ave and when was it built?
1000 Massachusetts Ave has 108,411 sq ft of gross floor area, as reported in its 2024 disclosure. The disclosure lists 1982 as its year built. It is classed as office.
Is 1000 Massachusetts 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, “1000 Massachusetts Ave, Cambridge, Massachusetts — 2024 benchmarking disclosure”, https://buildingcensus.com/buildings/cambridge/1000-massachusetts-ave-818f8d2c (data as of October 2, 2026).