Day 1

18th tallest finished building in Seattle

Day 1 is an office building in Seattle, with 37 floors, finished in 2017. It stands 159 m (521 ft) tall, which makes it the 18th tallest finished building in Seattle.

Height

159 m · 521 ft

Rank in Seattle

18th of 25 listed

Floors

37

Completed

2017

Use

Office

City

Seattle, USA

Next to it in the ranking

• 16th · Hyatt Regency Seattle160 m · 520 ft · 2018
• 17th · re:Invent160 m · 520 ft · 2019
• 19th · Rainier Tower157 m · 514 ft · 1977
• 20th · Fourth and Madison Building156 m · 512 ft · 2003

See all of Seattle's tallest buildings

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Heights, floors and years for finished buildings follow published figures, cross-checked with Wikipedia's list of tallest buildings in Seattle. Last checked 2 Nov 2026.