At a glance
515 Massachusetts Ave, Cambridge, MA 02139, USA is a 46,350-square-foot office building in Cambridge, Massachusetts, built in 1920. In its 2024 Cambridge benchmarking disclosure it reported an ENERGY STAR score of 100 out of 100 (grade A), a site energy-use intensity of 13.2 kBtu/ft² and 44 tCO₂e of greenhouse-gas emissions. That score is higher than 99% of the 94 scored office buildings in Cambridge.
BEUDO · reporting year 2024
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | 100 (band A) |
| Site EUI | 13.2 kBtu/ft² |
| Source EUI | 37.0 kBtu/ft² |
| GHG emissions | 44 tCO₂e |
| GHG intensity | — |
| Electricity | 179,504 kWh |
| Water use | 0 kgal |
| Gross floor area | 46,350 sq ft |
| Source record | cambridge:B1816:2024 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2024latest | 100 | 13.2 kBtu/ft² | 44 tCO₂e | |
| 2023 | — | 17.3 kBtu/ft² | 58 tCO₂e | |
| 2022 | — | 17.8 kBtu/ft² | 59 tCO₂e | |
| 2021 | — | — | 0 tCO₂e | |
| 2020 | — | — | 0 tCO₂e | |
| 2019 | — | — | 0 tCO₂e | |
| 2018 | — | — | 0 tCO₂e | |
| 2017 | — | — | 0 tCO₂e | |
| 2016 | — | — | 0 tCO₂e | |
| 2015 | — | — | 0 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
PARTEEN, LLC
Own or manage this building? Claim it to correct the record and get compliance alerts.
Location
- Address
- 515 Massachusetts Ave, Cambridge, MA 02139, USA
- City
- Cambridge
- State
- Massachusetts
- Coordinates
- 42.36450, -71.10170
Within ~1 km
Nearby benchmarked buildings
- 250 Massachusetts Avenuescore —
Laboratory · 1,362,662 sq ft
- 250 Massachusetts Avenuescore —
Laboratory · 517,029 sq ft
- 70 PACIFIC STscore —
College/University · 362,687 sq ft
- 610 Main Streetscore —
Laboratory · 278,738 sq ft
- 45 Sidney Streetscore —
Laboratory · 277,000 sq ft
- 131 Washington Streetscore 68
Multifamily Housing · 275,666 sq ft
See also: most efficient in Cambridge · biggest emitters
How does 515 Massachusetts Ave, Cambridge, MA 02139, USA compare with other office buildings in Cambridge?
The latest disclosures cover 117 office buildings in Cambridge, out of 902 buildings citywide. 515 Massachusetts Ave, Cambridge, MA 02139, USA's ENERGY STAR score of 100 compares with an average of 64 across the 94 that report a score; it scores higher than 99% of them. Its site EUI of 13.2 kBtu/ft² is about 83% below the average of 78.7 kBtu/ft² — it uses less energy per square foot than the typical building in that group.
At 46,350 sq ft, it is about 62% below the average floor area of 121,167 sq ft for those buildings. It was built in 1920, 45 years earlier 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 515 Massachusetts Ave, Cambridge, MA 02139, USA's energy performance changed over time?
BuildingCensus holds 10 Cambridge disclosures for 515 Massachusetts Ave, Cambridge, MA 02139, USA, covering report years 2015–2024. Site EUI moved from 17.8 kBtu/ft² (2022) to 13.2 kBtu/ft² (2024), a 26% decrease.
What does an ENERGY STAR score of 100 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: 100 is the top of the scale. BuildingCensus bands the score into report-card grades; 100 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. 515 Massachusetts Ave, Cambridge, MA 02139, USA's 13.2 kBtu/ft² across 46,350 sq ft works out to about 0.6 billion Btu (179 MWh-equivalent) in 2024. Its source EUI of 37.0 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 179,504 kWh of electricity and 0 thousand gallons of water for the year.
Which law requires 515 Massachusetts Ave, Cambridge, MA 02139, USA to report its energy use?
515 Massachusetts Ave, Cambridge, MA 02139, USA 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:B1816:2024). 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
- 51 Brattle Street· 46,245 sq ft · score 45 (D)
- 125 Mount Auburn Street· 46,085 sq ft · score 32 (D)
- 733 Concord Avenue· 44,048 sq ft · EUI 196.0 kBtu/ft²
- 46 Blackstone St· 44,041 sq ft · score 58 (C)
- 130 Bishop Allen Drive· 42,390 sq ft · score 62 (C)
- 1280 Massachusetts Avenue· 42,368 sq ft · score 22 (D)
- 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 515 Massachusetts Ave, Cambridge, MA 02139, USA's energy grade?
515 Massachusetts Ave, Cambridge, MA 02139, USA scores 100 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 515 Massachusetts Ave, Cambridge, MA 02139, USA use?
Its 2024 site energy-use intensity was 13.2 kBtu/ft² (37.0 kBtu/ft² source) across 46,350 sq ft, including 179,504 kWh of electricity.
What are 515 Massachusetts Ave, Cambridge, MA 02139, USA's carbon emissions?
515 Massachusetts Ave, Cambridge, MA 02139, USA reported 44 tCO₂e of greenhouse-gas emissions for 2024.
Where is 515 Massachusetts Ave, Cambridge, MA 02139, USA?
515 Massachusetts Ave, Cambridge, MA 02139, USA is in Cambridge, Massachusetts. Its coordinates are 42.36450, -71.10170 (latitude, longitude), as published in the Building Energy Use Disclosure Ordinance (BEUDO) file.
How big is 515 Massachusetts Ave, Cambridge, MA 02139, USA and when was it built?
515 Massachusetts Ave, Cambridge, MA 02139, USA has 46,350 sq ft of gross floor area, as reported in its 2024 disclosure. The disclosure lists 1920 as its year built. It is classed as office.
Is 515 Massachusetts Ave, Cambridge, MA 02139, USA covered by BEUDO?
Yes — it appears in the 2024 Building Energy Use Disclosure Ordinance (BEUDO) disclosure, which lists the buildings reporting under BEUDO.
Working with Cambridge building benchmarking records? Pro adds alerts, change history and CSV export ($49/mo); Enterprise adds full national files, the API and an MCP server for AI tools.
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, “515 Massachusetts Ave, Cambridge, MA 02139, USA, Cambridge, Massachusetts — 2024 benchmarking disclosure”, https://buildingcensus.com/buildings/cambridge/515-massachusetts-ave-cambridge-ma-02139-usa-dbe5441d (data as of October 2, 2026).