Twenty Nine Hundred On First
Multifamily Housing in Seattle, WA · 2900 1ST AVE · 98121
Seattle Energy Benchmarking Ordinance (SMC 22.920) · reporting year 2025
Benchmarking record
| Field | Value |
|---|---|
| ENERGY STAR score | 98 (band A) |
| Site EUI | 23.3 kBtu/ft² |
| Source EUI | 65.1 kBtu/ft² |
| GHG emissions | 23 tCO₂e |
| GHG intensity | 0.1 kgCO₂e/ft² |
| Electricity | 1,156,753 kWh |
| Natural gas | 133 therms |
| Gross floor area | 188,715 sq ft |
| Source record | seattle:19906:2025 |
The disclosure history
Year over year
| Year | Score | Δ | Site EUI | GHG emissions |
|---|---|---|---|---|
| 2025latest | 98 | +2 | 23.3 kBtu/ft² | 23 tCO₂e |
| 2024 | 96 | -1 | 24.2 kBtu/ft² | 24 tCO₂e |
| 2023 | 97 | ±0 | 24.1 kBtu/ft² | 24 tCO₂e |
| 2022 | 97 | -1 | 24.7 kBtu/ft² | 25 tCO₂e |
| 2021 | 98 | +2 | 23.4 kBtu/ft² | 23 tCO₂e |
| 2020 | 96 | ±0 | 30.1 kBtu/ft² | 23 tCO₂e |
| 2019 | 96 | +3 | 30.0 kBtu/ft² | 23 tCO₂e |
| 2018 | 93 | +1 | 31.7 kBtu/ft² | 25 tCO₂e |
| 2017 | 92 | -3 | 33.5 kBtu/ft² | 26 tCO₂e |
| 2016 | 95 | -3 | 29.7 kBtu/ft² | 22 tCO₂e |
| 2015 | 98 | 27.4 kBtu/ft² | 21 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
- 2900 1ST AVE
- City
- Seattle
- State
- Washington
- ZIP
- 98121
- Coordinates
- 47.61723, -122.35248
Within ~1 km
Nearby benchmarked buildings
- Climate Pledge Arenascore —
Indoor Arena · 932,000 sq ft
- Olympus Aptsscore 97
Multifamily Housing · 590,869 sq ft
Mixed Use Property · 524,610 sq ft
- Spire Condosscore 87
Multifamily Housing · 400,000 sq ft
- Avalon Belltown Towersscore 72
Multifamily Housing · 397,034 sq ft
- Third And Broad Bldgscore 94
Office · 396,626 sq ft
See also: most efficient in Seattle · biggest emitters
Frequently asked questions
What is Twenty Nine Hundred On First's energy grade?
Twenty Nine Hundred On First scores 98 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 Twenty Nine Hundred On First use?
Its 2025 site energy-use intensity was 23.3 kBtu/ft² (65.1 kBtu/ft² source) across 188,715 sq ft, including 1,156,753 kWh of electricity and 133 therms of natural gas.
What are Twenty Nine Hundred On First's carbon emissions?
Twenty Nine Hundred On First reported 23 tCO₂e of greenhouse-gas emissions (0.1 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.
Working with Seattle building benchmarking records? Pro adds alerts, change history and CSV export ($49/mo); Enterprise adds full national files, the API and an MCP server for AI tools.
Dataset updated . Source: Building Energy Benchmarking disclosure, record seattle:19906:2025.