509 FIRST APARTMENTS
Multifamily LR (1-4) in Seattle, WA · 509 1ST AVE W · 98119
Seattle Energy Benchmarking Ordinance (SMC 22.920) · reporting year 2024
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | 100 (band A) |
| Site EUI | 32.2 kBtu/ft² |
| Source EUI | 71.6 kBtu/ft² |
| GHG emissions | 15 tCO₂e |
| GHG intensity | 0.5 kgCO₂e/ft² |
| Electricity | 137,280 kWh |
| Natural gas | 2,301 therms |
| Gross floor area | 29,158 sq ft |
| Source record | seattle:49827:2024 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2024latest | 100 | +1 | 32.2 kBtu/ft² | 15 tCO₂e |
| 2023 | 99 | ±0 | 36.0 kBtu/ft² | 18 tCO₂e |
| 2022 | 99 | -1 | 37.8 kBtu/ft² | 20 tCO₂e |
| 2021 | 100 | +1 | 35.4 kBtu/ft² | 22 tCO₂e |
| 2020 | 99 | -1 | 37.3 kBtu/ft² | 22 tCO₂e |
| 2019 | 100 | +1 | 37.7 kBtu/ft² | 24 tCO₂e |
| 2018 | 99 | ±0 | 38.1 kBtu/ft² | 21 tCO₂e |
| 2017 | 99 | -1 | 32.4 kBtu/ft² | 23 tCO₂e |
| 2016 | 100 | ±0 | 25.9 kBtu/ft² | 21 tCO₂e |
| 2015 | 100 | 26.0 kBtu/ft² | 20 tCO₂e |
Compliance context
Seattle Energy Benchmarking Ordinance (SMC 22.920)
Seattle's Building Emissions Performance Standard (2023) sets declining carbon targets for buildings over 20,000 sq ft, with penalties for non-compliance beginning in the 2030s.
Ownership
No owner listed in the disclosure.
Own or manage this building? Claim it to correct the record and get compliance alerts.
Location
- Address
- 509 1ST AVE W
- City
- Seattle
- State
- Washington
- ZIP
- 98119
- Coordinates
- 47.62365, -122.35832
Within ~1 km
Nearby benchmarked buildings
- CLIMATE PLEDGE ARENAscore —
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- THIRD AND BROAD BLDGscore 93
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- ARMORY - SEATTLE CENTERscore —
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Multifamily MR (5-9) · 308,940 sq ft
- EXPO APARTMENTSscore 85
Multifamily MR (5-9) · 301,831 sq ft
- AVALON QUEEN ANNEscore 99
Multifamily MR (5-9) · 290,520 sq ft
See also: most efficient in Seattle · biggest emitters
Frequently asked questions
What is 509 FIRST APARTMENTS's energy grade?
509 FIRST APARTMENTS scores 100 out of 100 on ENERGY STAR — band A (High performer (85–100)) — in its 2024 Seattle disclosure. Scores are national percentiles against similar buildings; 75+ qualifies for ENERGY STAR certification.
How much energy does 509 FIRST APARTMENTS use?
Its 2024 site energy-use intensity was 32.2 kBtu/ft² (71.6 kBtu/ft² source) across 29,158 sq ft, including 137,280 kWh of electricity and 2,301 therms of natural gas.
What are 509 FIRST APARTMENTS's carbon emissions?
509 FIRST APARTMENTS reported 15 tCO₂e of greenhouse-gas emissions (0.5 kgCO₂e/ft²) for 2024. Seattle's Building Emissions Performance Standard (2023) sets declining carbon targets for buildings over 20,000 sq ft, with penalties for non-compliance beginning in the 2030s.
Dataset updated . Source: Building Energy Benchmarking disclosure, record seattle:49827:2024.