Ascent Slu And Marlowe
Multifamily Housing in Seattle, WA · 1146 HARRISON ST · 98109
Seattle Energy Benchmarking Ordinance (SMC 22.920) · reporting year 2025
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | 99 (band A) |
| Site EUI | 28.9 kBtu/ft² |
| Source EUI | 66.5 kBtu/ft² |
| GHG emissions | 245 tCO₂e |
| GHG intensity | 0.6 kgCO₂e/ft² |
| Electricity | 2,688,006 kWh |
| Natural gas | 36,914 therms |
| Gross floor area | 651,374 sq ft |
| Source record | seattle:50667:2025 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2025latest | 99 | +10 | 28.9 kBtu/ft² | 245 tCO₂e |
| 2024 | 89 | -10 | 43.4 kBtu/ft² | 567 tCO₂e |
| 2023 | 99 | -1 | 29.9 kBtu/ft² | 315 tCO₂e |
| 2022 | 100 | ±0 | 30.7 kBtu/ft² | 329 tCO₂e |
| 2021 | 100 | +52 | 8.3 kBtu/ft² | 189 tCO₂e |
| 2020 | 48 | 51.2 kBtu/ft² | 229 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
- 1146 HARRISON ST
- City
- Seattle
- State
- Washington
- ZIP
- 98109
- Coordinates
- 47.62262, -122.33483
Within ~1 km
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See also: most efficient in Seattle · biggest emitters
Frequently asked questions
What is Ascent Slu And Marlowe's energy grade?
Ascent Slu And Marlowe scores 99 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 Ascent Slu And Marlowe use?
Its 2025 site energy-use intensity was 28.9 kBtu/ft² (66.5 kBtu/ft² source) across 651,374 sq ft, including 2,688,006 kWh of electricity and 36,914 therms of natural gas.
What are Ascent Slu And Marlowe's carbon emissions?
Ascent Slu And Marlowe reported 245 tCO₂e of greenhouse-gas emissions (0.6 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:50667:2025.