At a glance
245 First Street is a 307,004-square-foot office building in Cambridge, Massachusetts, built in 1985. In its 2024 Cambridge benchmarking disclosure it reported a site energy-use intensity of 158.2 kBtu/ft² and 2,996 tCO₂e of greenhouse-gas emissions.
BEUDO · reporting year 2024
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | — |
| Site EUI | 158.2 kBtu/ft² |
| Source EUI | 290.3 kBtu/ft² |
| GHG emissions | 2,996 tCO₂e |
| GHG intensity | — |
| Electricity | 6,381,341 kWh |
| Natural gas | 268,056 therms |
| Water use | 4,517 kgal |
| Gross floor area | 307,004 sq ft |
| Source record | cambridge:B1080:2024 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2024latest | — | 158.2 kBtu/ft² | 2,996 tCO₂e | |
| 2023 | — | 170.0 kBtu/ft² | 3,196 tCO₂e | |
| 2022 | — | 175.2 kBtu/ft² | 3,309 tCO₂e | |
| 2021 | — | 175.0 kBtu/ft² | 3,321 tCO₂e | |
| 2020 | — | 165.4 kBtu/ft² | 3,110 tCO₂e | |
| 2019 | — | 177.2 kBtu/ft² | 3,178 tCO₂e | |
| 2018 | — | 171.7 kBtu/ft² | 3,226 tCO₂e | |
| 2017 | — | 172.5 kBtu/ft² | 3,328 tCO₂e | |
| 2016 | — | 247.7 kBtu/ft² | 4,582 tCO₂e | |
| 2015 | — | 150.3 kBtu/ft² | 2,973 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
CLPF-CAMBRIDGE SCIENCE CENTER, LLC,
Own or manage this building? Claim it to correct the record and get compliance alerts.
Location
- Address
- 245 First Street
- City
- Cambridge
- State
- Massachusetts
- Coordinates
- 42.36360, -71.07930
Within ~1 km
Nearby benchmarked buildings
- 100 Cambridge Side Placescore —
Enclosed Mall · 747,697 sq ft
- One Leighton Streetscore 21
Multifamily Housing · 612,952 sq ft
- 50-60 Binney STscore —
Mixed Use Property · 532,739 sq ft
- 8-12 Museum Wayscore 88
Multifamily Housing · 525,000 sq ft
- 325 Main Stscore 87
Office · 494,512 sq ft
- 20 Child Streetscore 100
Multifamily Housing · 485,197 sq ft
See also: most efficient in Cambridge · biggest emitters
How does 245 First Street compare with other office buildings in Cambridge?
The latest disclosures cover 117 office buildings in Cambridge, out of 902 buildings citywide. Its site EUI of 158.2 kBtu/ft² is about twice the average of 78.7 kBtu/ft² — it uses more energy per square foot than the typical building in that group.
At 307,004 sq ft, it is about 153% above the average floor area of 121,167 sq ft for those buildings. It was built in 1985, 20 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 245 First Street's energy performance changed over time?
BuildingCensus holds 10 Cambridge disclosures for 245 First Street, covering report years 2015–2024. Site EUI moved from 150.3 kBtu/ft² (2015) to 158.2 kBtu/ft² (2024), an 5% increase. Reported emissions went from 2,973 tCO₂e to 2,996 tCO₂e over the same span (up 1%).
What does a site EUI of 158.2 kBtu/ft² mean?
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. 245 First Street's 158.2 kBtu/ft² across 307,004 sq ft works out to about 48.6 billion Btu (14,234 MWh-equivalent) in 2024. Its source EUI of 290.3 kBtu/ft² also counts the energy lost generating and delivering that power, which is why it is higher. The disclosure also reports 6,381,341 kWh of electricity, 268,056 therms of natural gas and 4,517 thousand gallons of water for the year.
Which law requires 245 First Street to report its energy use?
245 First Street 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:B1080:2024). 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
- Two Education Circle· 300,000 sq ft · score 89 (A)
- 55 Cambridge Parkway· 283,686 sq ft · score 61 (C)
- 255 Main Street· 281,000 sq ft · score 63 (C)
- 90 Broadway· 280,488 sq ft · score 72 (B)
- 355 Main Street· 262,476 sq ft · score 78 (B)
- 25 First Street· 252,662 sq ft · score 91 (A)
- 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 245 First Street's energy grade?
245 First Street did not report an ENERGY STAR score in its 2024 disclosure, but its site energy-use intensity was 158.2 kBtu/ft².
How much energy does 245 First Street use?
Its 2024 site energy-use intensity was 158.2 kBtu/ft² (290.3 kBtu/ft² source) across 307,004 sq ft, including 6,381,341 kWh of electricity and 268,056 therms of natural gas.
What are 245 First Street's carbon emissions?
245 First Street reported 2,996 tCO₂e of greenhouse-gas emissions for 2024.
Where is 245 First Street?
245 First Street is in Cambridge, Massachusetts. Its coordinates are 42.36360, -71.07930 (latitude, longitude), as published in the Building Energy Use Disclosure Ordinance (BEUDO) file.
How big is 245 First Street and when was it built?
245 First Street has 307,004 sq ft of gross floor area, as reported in its 2024 disclosure. The disclosure lists 1985 as its year built. It is classed as office.
Is 245 First Street 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, “245 First Street, Cambridge, Massachusetts — 2024 benchmarking disclosure”, https://buildingcensus.com/buildings/cambridge/245-first-street-414be79d (data as of October 2, 2026).