BuildingCensus
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21 Dunster Street

Office in Cambridge, MA

ENERGY STAR score
—
not reported · 2024
Site EUI
142.6
kBtu/ft²
GHG emissions
263
tCO₂e
GHG intensity
—
kgCO₂e/ft²
Floor area
30,384
sq ft
Year built
1898
vintage
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85–10070–8455–691–54
This entry + 6 nearby

BEUDO · reporting year 2024

Benchmarking record

FieldValue
ENERGY STAR score—
Site EUI142.6 kBtu/ft²
Source EUI249.6 kBtu/ft²
GHG emissions263 tCO₂e
GHG intensity—
Electricity508,368 kWh
Natural gas25,970 therms
Water use1,352 kgal
Gross floor area30,384 sq ft
Source recordcambridge:B1822:2024

The disclosure history

Year over year

YearScoreΔSite EUIGHG emissions
2024latest—142.6 kBtu/ft²263 tCO₂e
2023—141.6 kBtu/ft²258 tCO₂e
2022—130.4 kBtu/ft²238 tCO₂e
2021—116.1 kBtu/ft²213 tCO₂e
2020—90.4 kBtu/ft²167 tCO₂e
2019—164.6 kBtu/ft²287 tCO₂e
2018—180.7 kBtu/ft²325 tCO₂e
2017—170.2 kBtu/ft²317 tCO₂e
2016—114.5 kBtu/ft²215 tCO₂e
2015—140.7 kBtu/ft²269 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).

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Ownership

DANA CHAMBERS ALLIANCE

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Location

Address
21 Dunster Street
State
Massachusetts
Coordinates
42.37290, -71.11920

Within ~1 km

Nearby benchmarked buildings

See also: most efficient in Cambridge · biggest emitters

Frequently asked questions

What is 21 Dunster Street's energy grade?

21 Dunster Street did not report an ENERGY STAR score in its 2024 disclosure, but its site energy-use intensity was 142.6 kBtu/ft².

How much energy does 21 Dunster Street use?

Its 2024 site energy-use intensity was 142.6 kBtu/ft² (249.6 kBtu/ft² source) across 30,384 sq ft, including 508,368 kWh of electricity and 25,970 therms of natural gas.

What are 21 Dunster Street's carbon emissions?

21 Dunster Street reported 263 tCO₂e of greenhouse-gas emissions for 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).

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.

Dataset updated . Source: Building Energy Use Disclosure Ordinance (BEUDO) disclosure, record cambridge:B1822:2024.