Harrison Square (Formerly Archstone Elliott Bay)
Multifamily Housing in Seattle, WA · 312 2ND AVE W · 98119
Seattle Energy Benchmarking Ordinance (SMC 22.920) · reporting year 2025
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | 97 (band A) |
| Site EUI | 30.3 kBtu/ft² |
| Source EUI | 72.9 kBtu/ft² |
| GHG emissions | 79 tCO₂e |
| GHG intensity | 0.5 kgCO₂e/ft² |
| Electricity | 1,119,729 kWh |
| Natural gas | 11,195 therms |
| Gross floor area | 228,675 sq ft |
| Source record | seattle:21285:2025 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2025latest | 97 | ±0 | 30.3 kBtu/ft² | 79 tCO₂e |
| 2024 | 97 | +1 | 30.5 kBtu/ft² | 81 tCO₂e |
| 2023 | 96 | +1 | 31.6 kBtu/ft² | 81 tCO₂e |
| 2022 | 95 | -2 | 33.3 kBtu/ft² | 86 tCO₂e |
| 2021 | 97 | +6 | 31.6 kBtu/ft² | 92 tCO₂e |
| 2020 | 91 | -5 | 34.5 kBtu/ft² | 99 tCO₂e |
| 2019 | 96 | -1 | 32.4 kBtu/ft² | 103 tCO₂e |
| 2018 | 97 | +1 | 30.5 kBtu/ft² | 90 tCO₂e |
| 2017 | 96 | +2 | 32.9 kBtu/ft² | 95 tCO₂e |
| 2016 | 94 | -3 | 32.2 kBtu/ft² | 100 tCO₂e |
| 2015 | 97 | 30.0 kBtu/ft² | 96 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.
Own or manage this building? Claim it to correct the record and get compliance alerts.
Location
- Address
- 312 2ND AVE W
- City
- Seattle
- State
- Washington
- ZIP
- 98119
- Coordinates
- 47.62158, -122.35897
Within ~1 km
Nearby benchmarked buildings
- Climate Pledge Arenascore —
Indoor Arena · 932,000 sq ft
- Olympus Aptsscore 97
Multifamily Housing · 590,869 sq ft
- Third And Broad Bldgscore 94
Office · 396,626 sq ft
- 2601 ELLIOTT AVEscore —
Office · 350,310 sq ft
Multifamily Housing · 308,940 sq ft
- Expo Apartmentsscore 97
Multifamily Housing · 301,831 sq ft
See also: most efficient in Seattle · biggest emitters
Frequently asked questions
What is Harrison Square (Formerly Archstone Elliott Bay)'s energy grade?
Harrison Square (Formerly Archstone Elliott Bay) scores 97 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 Harrison Square (Formerly Archstone Elliott Bay) use?
Its 2025 site energy-use intensity was 30.3 kBtu/ft² (72.9 kBtu/ft² source) across 228,675 sq ft, including 1,119,729 kWh of electricity and 11,195 therms of natural gas.
What are Harrison Square (Formerly Archstone Elliott Bay)'s carbon emissions?
Harrison Square (Formerly Archstone Elliott Bay) reported 79 tCO₂e of greenhouse-gas emissions (0.5 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:21285:2025.