Mariner Square
Mixed Use Property in Seattle, WA · 1900 N NORTHLAKE WAY · 98103
Seattle Energy Benchmarking Ordinance (SMC 22.920) · reporting year 2025
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | — |
| Site EUI | 49.3 kBtu/ft² |
| Source EUI | 123.3 kBtu/ft² |
| GHG emissions | 54 tCO₂e |
| GHG intensity | 0.7 kgCO₂e/ft² |
| Electricity | 967,176 kWh |
| Natural gas | 6,749 therms |
| Gross floor area | 78,716 sq ft |
| Source record | seattle:26460:2025 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2025latest | — | 49.3 kBtu/ft² | 54 tCO₂e | |
| 2024 | — | 48.3 kBtu/ft² | 57 tCO₂e | |
| 2023 | — | 52.5 kBtu/ft² | 67 tCO₂e | |
| 2022 | — | 52.7 kBtu/ft² | 64 tCO₂e | |
| 2021 | — | 43.3 kBtu/ft² | 41 tCO₂e | |
| 2020 | — | 47.9 kBtu/ft² | 38 tCO₂e | |
| 2019 | — | 51.7 kBtu/ft² | 52 tCO₂e | |
| 2018 | 27 | -10 | 54.0 kBtu/ft² | 52 tCO₂e |
| 2017 | 37 | -1 | 56.3 kBtu/ft² | 54 tCO₂e |
| 2016 | 38 | +14 | 52.1 kBtu/ft² | 44 tCO₂e |
| 2015 | 24 | 59.4 kBtu/ft² | 41 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
- 1900 N NORTHLAKE WAY
- City
- Seattle
- State
- Washington
- ZIP
- 98103
- Coordinates
- 47.64748, -122.33435
Within ~1 km
Nearby benchmarked buildings
- Tableau (North Edge)score 88
Office · 338,989 sq ft
- Amli Wallingford Apartment-Northscore 99
Multifamily Housing · 213,576 sq ft
- Stone 34score 88
Office · 206,126 sq ft
- Prescott Wallingford Apartmentsscore 100
Multifamily Housing · 198,233 sq ft
- 35 Stone Office Buildingscore 88
Office · 171,945 sq ft
- Ray Apartmentsscore 99
Multifamily Housing · 131,034 sq ft
See also: most efficient in Seattle · biggest emitters
Frequently asked questions
What is Mariner Square's energy grade?
Mariner Square did not report an ENERGY STAR score in its 2025 disclosure, but its site energy-use intensity was 49.3 kBtu/ft².
How much energy does Mariner Square use?
Its 2025 site energy-use intensity was 49.3 kBtu/ft² (123.3 kBtu/ft² source) across 78,716 sq ft, including 967,176 kWh of electricity and 6,749 therms of natural gas.
What are Mariner Square's carbon emissions?
Mariner Square reported 54 tCO₂e of greenhouse-gas emissions (0.7 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:26460:2025.