BuildingCensus
B

121 First Street

Office in Cambridge, MA

ENERGY STAR score
77
band B · 2024
Site EUI
37.7
kBtu/ft²
GHG emissions
161
tCO₂e
GHG intensity
kgCO₂e/ft²
Floor area
61,565
sq ft
Year built
2018
vintage
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85–10070–8455–691–54
This entry + 6 nearby

BEUDO · reporting year 2024

Benchmarking record

FieldValue
ENERGY STAR score77 (band B)
Site EUI37.7 kBtu/ft²
Source EUI95.4 kBtu/ft²
GHG emissions161 tCO₂e
GHG intensity
Electricity575,750 kWh
Natural gas3,572 therms
Water use395 kgal
Gross floor area61,565 sq ft
Source recordcambridge:B1419:2024

The disclosure history

Year over year

YearScoreΔSite EUIGHG emissions
2024latest77-437.7 kBtu/ft²161 tCO₂e
20238132.9 kBtu/ft²141 tCO₂e
202233.5 kBtu/ft²142 tCO₂e
202131.3 kBtu/ft²134 tCO₂e
202032.9 kBtu/ft²137 tCO₂e
20196239.8 kBtu/ft²156 tCO₂e
2018
2017
2016
2015

Compliance context

BEUDO

Cambridge's 2023 BEUDO amendments require large non-residential buildings to cut emissions to net zero by 2035–2050, with compliance obligations starting from 2025 reporting.

Program details →

Ownership

BENT ASSOCIATES LIMITED PARTNERSHIP

Own or manage this building? Claim it to correct the record and get compliance alerts.

Location

Address
121 First Street
State
Massachusetts
Coordinates
42.36690, -71.07800

Within ~1 km

Nearby benchmarked buildings

See also: most efficient in Cambridge · biggest emitters

Frequently asked questions

What is 121 First Street's energy grade?

121 First Street scores 77 out of 100 on ENERGY STAR — band B (Above median (70–84)) — in its 2024 Cambridge disclosure. Scores are national percentiles against similar buildings; 75+ qualifies for ENERGY STAR certification.

How much energy does 121 First Street use?

Its 2024 site energy-use intensity was 37.7 kBtu/ft² (95.4 kBtu/ft² source) across 61,565 sq ft, including 575,750 kWh of electricity and 3,572 therms of natural gas.

What are 121 First Street's carbon emissions?

121 First Street reported 161 tCO₂e of greenhouse-gas emissions for 2024. Cambridge's 2023 BEUDO amendments require large non-residential buildings to cut emissions to net zero by 2035–2050, with compliance obligations starting from 2025 reporting.

Dataset updated . Source: Building Energy Use Disclosure Ordinance (BEUDO) disclosure, record cambridge:B1419:2024.