Three20 Apartments
Multifamily Housing in Seattle, WA · 320 E PINE ST · 98122
Seattle Energy Benchmarking Ordinance (SMC 22.920) · reporting year 2025
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | 94 (band A) |
| Site EUI | 35.4 kBtu/ft² |
| Source EUI | 76.7 kBtu/ft² |
| GHG emissions | 105 tCO₂e |
| GHG intensity | 0.8 kgCO₂e/ft² |
| Electricity | 864,098 kWh |
| Natural gas | 16,596 therms |
| Gross floor area | 130,284 sq ft |
| Source record | seattle:25723:2025 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2025latest | 94 | +16 | 35.4 kBtu/ft² | 105 tCO₂e |
| 2024 | 78 | +7 | 49.8 kBtu/ft² | 199 tCO₂e |
| 2023 | 71 | -6 | 51.1 kBtu/ft² | 195 tCO₂e |
| 2022 | 77 | -4 | 51.0 kBtu/ft² | 199 tCO₂e |
| 2021 | 81 | +25 | 47.8 kBtu/ft² | 182 tCO₂e |
| 2020 | 56 | +12 | 66.7 kBtu/ft² | 175 tCO₂e |
| 2019 | 44 | +3 | 77.4 kBtu/ft² | 227 tCO₂e |
| 2018 | 41 | -16 | 77.8 kBtu/ft² | 227 tCO₂e |
| 2017 | 57 | +24 | 63.3 kBtu/ft² | 148 tCO₂e |
| 2016 | 33 | -17 | 78.0 kBtu/ft² | 225 tCO₂e |
| 2015 | 50 | 66.6 kBtu/ft² | 175 tCO₂e |
Compliance context
Seattle Energy Benchmarking Ordinance (SMC 22.920)
Seattle's Building Emissions Performance Standard (adopted 2023) applies to buildings over 20,000 sq ft: benchmarking verification is due 2027–2030 and initial emissions targets 2031–2035, reaching net zero by 2041–2050, with fines for non-compliance.
Ownership
No owning organisation shown. Names of private individuals in the disclosure are not published here.
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Location
- Address
- 320 E PINE ST
- City
- Seattle
- State
- Washington
- ZIP
- 98122
- Coordinates
- 47.61535, -122.32717
Within ~1 km
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See also: most efficient in Seattle · biggest emitters
Frequently asked questions
What is Three20 Apartments's energy grade?
Three20 Apartments scores 94 out of 100 on ENERGY STAR — band A (High performer (85–100)) — in its 2025 Seattle disclosure. Scores are national percentiles against similar buildings; 75+ qualifies for ENERGY STAR certification.
How much energy does Three20 Apartments use?
Its 2025 site energy-use intensity was 35.4 kBtu/ft² (76.7 kBtu/ft² source) across 130,284 sq ft, including 864,098 kWh of electricity and 16,596 therms of natural gas.
What are Three20 Apartments's carbon emissions?
Three20 Apartments reported 105 tCO₂e of greenhouse-gas emissions (0.8 kgCO₂e/ft²) for 2025. Seattle's Building Emissions Performance Standard (adopted 2023) applies to buildings over 20,000 sq ft: benchmarking verification is due 2027–2030 and initial emissions targets 2031–2035, reaching net zero by 2041–2050, with fines for non-compliance.
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Dataset updated . Source: Building Energy Benchmarking disclosure, record seattle:25723:2025.