601 Union Street

601 Union Street, Seattle, WA 98101

Property Information

  • For Lease Contact for pricing
  • Property Type Office
  • Property Size 1,126,428 SF
  • Lot Size 2.06 Acre
  • # of Floors 56
  • Property Tenancy Multi-Tenant
  • Building Class A+
  • Year Built 1989
  • Date Updated Aug 21, 2026

Description

Join Seattle’s premier business address at Union Square. Over 1.8M square feet of office space in Union Square provides a built-in customer base with a diverse retail mix of Cortina & Cortina Café, MOD Pizza, Starbucks, Evergreens and more. Located in the heart of Downtown Seattle, Union Square offers an unparalleled retail opportunity within a distinguished Class A office tower, steps from top-tier hotels, national employers, transit and other Class A office buildings.

  • Roughly 5,000 people work in Union Square and an additional 65,000+ employees in a 3-block radius.

  • Beautiful on-site amenities and public spaces.

  • Adjacent to the Washington State Convention Center which is expected to host over 258,000 visitors in 2025.

  • Central courtyard connecting One and Two Union towers provides inviting space to work and hard to find outdoor space in the heart of the city.

Contacts

Location

Located at 601 Union Street, Seattle, WA 98101, this property is part of the Seattle Central Business District neighborhood and Seattle market.

  • 98/100 Walker's Paradise
  • 100/100 Rider's Paradise
  • 76/100 Very Bikeable
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