John Winthrop Apt
Multifamily Housing in Seattle, WA · 1020 SENECA ST · 98101
Seattle Energy Benchmarking Ordinance (SMC 22.920) · reporting year 2025
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | 90 (band A) |
| Site EUI | 70.1 kBtu/ft² |
| Source EUI | 97.6 kBtu/ft² |
| GHG emissions | 130 tCO₂e |
| GHG intensity | 3.0 kgCO₂e/ft² |
| Electricity | 172,051 kWh |
| Natural gas | 24,215 therms |
| Gross floor area | 52,620 sq ft |
| Source record | seattle:21118:2025 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2025latest | 90 | +10 | 70.1 kBtu/ft² | 130 tCO₂e |
| 2024 | 80 | -5 | 83.6 kBtu/ft² | 164 tCO₂e |
| 2023 | 85 | +20 | 80.5 kBtu/ft² | 158 tCO₂e |
| 2022 | 65 | -18 | 101.7 kBtu/ft² | 206 tCO₂e |
| 2021 | 83 | -3 | 83.9 kBtu/ft² | 167 tCO₂e |
| 2020 | 86 | -11 | 77.8 kBtu/ft² | 153 tCO₂e |
| 2019 | 97 | 73.4 kBtu/ft² | 159 tCO₂e | |
| 2018 | — | — | 6 tCO₂e | |
| 2017 | 35 | +7 | 103.6 kBtu/ft² | 202 tCO₂e |
| 2016 | 28 | -22 | 99.4 kBtu/ft² | 187 tCO₂e |
| 2015 | 50 | 79.3 kBtu/ft² | 138 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
- 1020 SENECA ST
- City
- Seattle
- State
- Washington
- ZIP
- 98101
- Coordinates
- 47.61075, -122.32689
Within ~1 km
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See also: most efficient in Seattle · biggest emitters
Frequently asked questions
What is John Winthrop Apt's energy grade?
John Winthrop Apt scores 90 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 John Winthrop Apt use?
Its 2025 site energy-use intensity was 70.1 kBtu/ft² (97.6 kBtu/ft² source) across 52,620 sq ft, including 172,051 kWh of electricity and 24,215 therms of natural gas.
What are John Winthrop Apt's carbon emissions?
John Winthrop Apt reported 130 tCO₂e of greenhouse-gas emissions (3.0 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:21118:2025.