21 Walden Square Road
Multifamily Housing in Cambridge, MA
BEUDO · reporting year 2024
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | 86 (band A) |
| Site EUI | 77.2 kBtu/ft² |
| Source EUI | 105.2 kBtu/ft² |
| GHG emissions | 1,093 tCO₂e |
| GHG intensity | — |
| Electricity | 1,013,569 kWh |
| Natural gas | 158,733 therms |
| Water use | 10,723 kgal |
| Gross floor area | 250,389 sq ft |
| Source record | cambridge:B1642:2024 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2024latest | 86 | -3 | 77.2 kBtu/ft² | 1,093 tCO₂e |
| 2023 | 89 | -2 | 73.3 kBtu/ft² | 1,038 tCO₂e |
| 2022 | 91 | -8 | 72.7 kBtu/ft² | 1,029 tCO₂e |
| 2021 | 99 | +14 | 59.7 kBtu/ft² | 823 tCO₂e |
| 2020 | 85 | -1 | 81.1 kBtu/ft² | 1,136 tCO₂e |
| 2019 | 86 | -6 | 82.5 kBtu/ft² | 1,136 tCO₂e |
| 2018 | 92 | ±0 | 72.6 kBtu/ft² | 1,023 tCO₂e |
| 2017 | 92 | +2 | 70.5 kBtu/ft² | 1,009 tCO₂e |
| 2016 | 90 | +8 | 72.8 kBtu/ft² | 1,043 tCO₂e |
| 2015 | 82 | 86.0 kBtu/ft² | 1,224 tCO₂e |
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.
Ownership
WSQ LIMITED PARTNERSHIP
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Location
- Address
- 21 Walden Square Road
- City
- Cambridge
- State
- Massachusetts
- Coordinates
- 42.38910, -71.13060
Within ~1 km
Nearby benchmarked buildings
- 46-56 Linnaean Streetscore —
Residence Hall/Dormitory · 251,014 sq ft
- 362 Rindge Avescore 57
Multifamily Housing · 249,723 sq ft
- 205-225 Walden St.score 89
Multifamily Housing · 229,040 sq ft
- 1 Jackson Placescore 73
Multifamily Housing · 207,765 sq ft
- 1 Jackson Placescore 88
Multifamily Housing · 207,765 sq ft
- 64 Linnaean Streetscore —
Residence Hall/Dormitory · 191,944 sq ft
See also: most efficient in Cambridge · biggest emitters
Frequently asked questions
What is 21 Walden Square Road's energy grade?
21 Walden Square Road scores 86 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 21 Walden Square Road use?
Its 2024 site energy-use intensity was 77.2 kBtu/ft² (105.2 kBtu/ft² source) across 250,389 sq ft, including 1,013,569 kWh of electricity and 158,733 therms of natural gas.
What are 21 Walden Square Road's carbon emissions?
21 Walden Square Road reported 1,093 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:B1642:2024.