Seattle–Tacoma International Airport C Concourse Expansion
Sector: Airport • Location: Seattle, Washington, United States
Source: Archinect
The project expands the existing C Concourse at Seattle–Tacoma International Airport from 81,000 square feet to 229,500 square feet, adding four new floors and increasing passenger capacity while improving circulation, accessibility, and amenities. It features a two-story marketplace inspired by Seattle's public markets, natural materials from the Pacific Northwest, and new passenger amenities inc
- Status
- Closed
- Sector
- Airport, Solar, Commercial, Forest Products and Packaging, Hospital
- Location
- Seattle, Washington, United States of America
- Updated
- 22 Jul 2026
- Source
- Archinect
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Project Information
Participants
| Not available for this record. |
Status
Original status | completed |
Taiyo status | Closed |
Taiyo last update | 2026-07-22 |
Contact
| Not available for this record. |
Description
Description | The project expands the existing C Concourse at Seattle–Tacoma International Airport from 81,000 square feet to 229,500 square feet, adding four new floors and increasing passenger capacity while improving circulation, accessibility, and amenities. It features a two-story marketplace inspired by Seattle's public markets, natural materials from the Pacific Northwest, and new passenger amenities including prayer, nursing, sensory, and pet relief rooms. Sustainability measures include all-electric building systems, a photovoltaic array, electrochromic glazing, and waste-reduction infrastructure. |
Original sector | Transportation |
Location
Country | United States of America (USA) |
State | Washington |
City | Seattle |
Source
Source | Archinect |
URL |
More Details
Record type | Project |
Sector | Airport, Solar, Commercial, Forest Products and Packaging, Hospital |
Article published date | 2026-07-11 |
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