Seattle's Premier Business Address

One and Two Union Square are the most prestigious and inviting places to do business in Seattle. Award-winning, icon of sustainability, LEED Platinum certified, northwest-inspired design, dramatic views, splendid courtyards, superior office finishes, state-of-the-art systems and a management team dedicated to exceeding tenant expectations, all combine to make Union Square Seattle’s premier business address.

WELCOME BACK! TAKE A FIRST LOOK AT THE NEW TWO UNION SQUARE COURTYARD.

The new Two Union Square courtyard will add a comfortable outdoor setting to meet, work, or just enjoy a moment outside. Renovations are well underway with the hopes of an unveiling starting this summer into 2022.

FIND OUT MORE

Tour Union Square

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Union Square
Facts and Features

One Union

  • 36 floors above ground
  • 672,479 sq ft
  • Completed in 1981
  • Outdoor courtyard connecting One and Two Union Square

Two Union

  • 56 floors above ground
  • 1,165,441 sq ft
  • Completed in 1989
  • The building, at a height of 740 ft (230 m), is among Seattle’s tallest skyscrapers.
  • Tip of the flag pole is 796’6” above the street and the 90-foot flag pole is 56’6” above the roof.
  • The 20 x 30 foot US flag flies at about 300 feet higher than the top of the Space Needle.
  • First in the world to use 19,000 lbs/2” concrete.

Leasing Availability

Home to some of the most prominent financial institutions, law offices, real estate professionals, health care, tech companies and other professional firms.

Image of One Union Square, floor 04

One Union Square

Floor 04, Suite 400

RSF — 12636

Available

Image of One Union Square, floor 08

One Union Square

Floor 08, Suite 830

RSF — 1037

Available Now, Medical Dental Space

Image of One Union Square, floor 09

One Union Square

Floor 09, Suite 900

RSF — 6014

Available 8/1/21

Image of One Union Square, floor 10

One Union Square

Floor 10, Suite 1001

RSF — 7055

Available Now

Image of One Union Square, floor 10

One Union Square

Floor 10, Suite 1012

RSF — 3236

Available Now

Image of One Union Square, floor 10

One Union Square

Floor 10, Suite 1028

RSF — 2821

Available Now

Image of One Union Square, floor 11

One Union Square

Floor 11, Suite 1100

RSF — 18437

Available 5/1/22

Image of One Union Square, floor 17

One Union Square

Floor 17, Suite 1708

RSF — 1211

Available

Image of One Union Square, floor 17

One Union Square

Floor 17, Suite 1715

RSF — 1580

Available

Image of One Union Square, floor 17

One Union Square

Floor 17, Suite 1725

RSF — 1211

Available 9/1/21

Image of One Union Square, floor 17

One Union Square

Floor 17, Suite 1701

RSF — 3066

Available Now

Image of One Union Square, floor 18

One Union Square

Floor 18, Suite 1800

RSF — 18936

Available 12/1/21

Image of One Union Square, floor 19

One Union Square

Floor 19, Suite 1910

RSF — 5597

Available Now

Image of One Union Square, floor 20

One Union Square

Floor 20, Suite 2004

RSF — 1400

Available

Image of One Union Square, floor 21

One Union Square

Floor 21, Suite 2100

RSF — 18911

Available Now, Full Floor

Image of One Union Square, floor 22

One Union Square

Floor 22, Suite 2200

RSF — 13605

Available

Image of One Union Square, floor 23

One Union Square

Floor 23, Suite 2301

RSF — 913

Available Now

Image of One Union Square, floor 23

One Union Square

Floor 23, Suite 2305

RSF — 2450

Available 9/1/21

Image of One Union Square, floor 23

One Union Square

Floor 23, Suite 2310

RSF — 4290

Available 1/1/22

Image of One Union Square, floor 25

One Union Square

Floor 25, Suite 2528

RSF — 6782

Available Now

Image of One Union Square, floor 25

One Union Square

Floor 25, Suite 2525

RSF — 1959

Available

Image of One Union Square, floor 28

One Union Square

Floor 28, Suite 2800

RSF — 2761

Available

Image of One Union Square, floor 28

One Union Square

Floor 28, Suite 2828

RSF — 2795

Available

Image of One Union Square, floor 30

One Union Square

Floor 30, Suite 3011

RSF — 812

Available Now

Image of Two Union Square, floor 01

Two Union Square

Floor 01, Suite Retail

RSF — 1366

Available Now, Retail

Image of Two Union Square, floor 01

Two Union Square

Floor 01, Suite 1322 6th Ave

RSF — 6844

Available Now

Image of Two Union Square, floor 04

Two Union Square

Floor 04, Suite 425

RSF — 2636

Available 12/1/21

Image of Two Union Square, floor 05

Two Union Square

Floor 05, Suite 500

RSF — 16222

Available Now

Image of Two Union Square, floor 05

Two Union Square

Floor 05, Suite 520

RSF — 5327

Available

Image of Two Union Square, floor 16

Two Union Square

Floor 16, Suite 1622

RSF — 1651

Available Now

Image of Two Union Square, floor 16

Two Union Square

Floor 16, Suite 1634

RSF — 678

Available

Image of Two Union Square, floor 16

Two Union Square

Floor 16, Suite 1601

RSF — 4577

Available

Image of Two Union Square, floor 27

Two Union Square

Floor 27, Suite 2723

RSF — 1028

Available Now

Image of Two Union Square, floor 33

Two Union Square

Floor 33, Suite 3320

RSF — 11745

Available 3/1/22

Image of Two Union Square, floor 35

Two Union Square

Floor 35, Suite 3501

RSF — 2795

Available

Image of Two Union Square, floor 37

Two Union Square

Floor 37, Suite 3701

RSF — 7568

Available Now

Image of Two Union Square, floor 37

Two Union Square

Floor 37, Suite 3701 & 3727

RSF — 10097

Available Now

Image of Two Union Square, floor 37

Two Union Square

Floor 37, Suite 3727

RSF — 2529

Available Now, elevator lobby exposure

Image of Two Union Square, floor 48

Two Union Square

Floor 48, Suite 4800

RSF — 22566

Available Now

Image of Two Union Square, floor 49

Two Union Square

Floor 49, Suite 4930

RSF — 8919

Available Now

Image of Two Union Square, floor 49

Two Union Square

Floor 49, Suite 4800 + 4930

RSF — 31485

Available Now

Image of Two Union Square, floor 54

Two Union Square

Floor 54, Suite 5400

RSF — 17461

Available

Floor Suite RSF Availability Leasing PDF 3d Tour Video Tour
0440012636View
088301037Now, Medical Dental SpaceViewView
0990060148/1/21ViewView
1010017055NowView
1010123236NowView
1010282821NowView
111100184375/1/22View
1717081211View
1717151580View
17172512119/1/21View
1717013066NowViewView
181800 1893612/1/21View
1919105597NowViewView
2020041400ViewView
21210018911Now, Full FloorViewView
22220013605ViewView
232301913NowViewView
23230524509/1/21View
23231042901/1/22View
2525286782NowView
2525251959View
2828002761ViewView
2828282795View
303011812NowViewView
Floor Suite RSF Availability Leasing PDF 3d Tour Video Tour
01Retail1366Now, RetailView
011322 6th Ave6844NowViewViewView
04425263612/1/21ViewView
0550016222NowViewView
055205327ViewView
1616221651NowView
161634678ViewView
1616014577ViewView
2727231028NowViewView
333320117453/1/22ViewView
3535012795View
3737017568NowViewViewView
373701 & 372710097NowView
3737272529Now, elevator lobby exposureViewView
48480022566NowViewViewView
4949308919NowViewViewView
494800 + 493031485NowView
54540017461ViewViewView

Two Union Square

image/svg+xml

One Union Square

Floorplan of One Union Square, floor 04, Suite 400
Floorplan of One Union Square, floor 08, Suite 830
Floorplan of One Union Square, floor 09, Suite 900
Floorplan of One Union Square, floor 10, Suite 1001
Floorplan of One Union Square, floor 10, Suite 1012
Floorplan of One Union Square, floor 10, Suite 1028
Floorplan of One Union Square, floor 11, Suite 1100
Floorplan of One Union Square, floor 17, Suite 1708
Floorplan of One Union Square, floor 17, Suite 1715
Floorplan of One Union Square, floor 17, Suite 1725
Floorplan of One Union Square, floor 17, Suite 1701
Floorplan of One Union Square, floor 18, Suite 1800
Floorplan of One Union Square, floor 19, Suite 1910
Floorplan of One Union Square, floor 20, Suite 2004
Floorplan of One Union Square, floor 21, Suite 2100
Floorplan of One Union Square, floor 22, Suite 2200
Floorplan of One Union Square, floor 23, Suite 2301
Floorplan of One Union Square, floor 23, Suite 2305
Floorplan of One Union Square, floor 23, Suite 2310
Floorplan of One Union Square, floor 25, Suite 2528
Floorplan of One Union Square, floor 25, Suite 2525
Floorplan of One Union Square, floor 28, Suite 2800
Floorplan of One Union Square, floor 28, Suite 2828
Floorplan of One Union Square, floor 30, Suite 3011
Floorplan of Two Union Square, floor 01, Suite Retail
Floorplan of Two Union Square, floor 01, Suite 1322 6th Ave
Floorplan of Two Union Square, floor 04, Suite 425
Floorplan of Two Union Square, floor 05, Suite 500
Floorplan of Two Union Square, floor 05, Suite 520
Floorplan of Two Union Square, floor 16, Suite 1622
Floorplan of Two Union Square, floor 16, Suite 1634
Floorplan of Two Union Square, floor 16, Suite 1601
Floorplan of Two Union Square, floor 27, Suite 2723
Floorplan of Two Union Square, floor 33, Suite 3320
Floorplan of Two Union Square, floor 35, Suite 3501
Floorplan of Two Union Square, floor 37, Suite 3701
Floorplan of Two Union Square, floor 37, Suite 3701 & 3727
Floorplan of Two Union Square, floor 37, Suite 3727
Floorplan of Two Union Square, floor 48, Suite 4800
Floorplan of Two Union Square, floor 49, Suite 4930
Floorplan of Two Union Square, floor 49, Suite 4800 + 4930
Floorplan of Two Union Square, floor 54, Suite 5400

Leasing Contact

Mark Barbieri

Executive Vice President

206-613-5316 mbarbieri@waholdings.com

Tim Holt

Senior Vice President/General Manager

206-613-5330 tholt@waholdings.com

Mick Newell

Senior Leasing & Property Manager

206-613-5318 mnewell@waholdings.com

Renovations

Discover the New Two Union

Visit NewTwoUnion.com
  • Awards, Certifications, and Notable Reviews

    • LEED Certified 2009, LEED Platinum Certified 2015

      Certification of One and Two Union Square

    • Energy Star: One Union = 93, Two Union = 97

      One and Two Union Square

    • BOMA Building of the Year 1999/2000

      Two Union Square

Food. Drinks. Retail. Community.

Union Square offers amenities that inspire and help build business and community. Tenants and guests are greeted with stunning and spacious lobbies, on-site dining, retail, and quality services. Respite and relaxation can be found in thoughtfully designed outdoor courtyards and ample green spaces. Other modern amenities such as a full fitness center, Tesla Supercharger and EV charging stations, bike storage and shower rooms further complement the reknowned Union Square experience.

No need to leave the buildings to eat, shop, bank, grab a coffee or pick up your dry cleaning. These fine shops, cafés and restaurants are just downstairs:

Coffee Being Poured

The Neighborhood

The surrounding neighborhood is home to some of the best restaurants, hotels, retail and entertainment Seattle has to offer. 5th Avenue Theatre, ACT Theatre, Convention Center and Freeway Park, Pike Place Market, Seattle Art Museum, the Seattle Aquarium, ferry terminal and Olympic Sculpture Park are just a short walk away.

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Art, Community, and Action at Union Square

Watch the video to see how Union Square is an active supporter of our downtown Seattle community. Look for our featured building artwork by local interdisciplinary artist Barry Johnson. Make sure your volume is up to enjoy the full experience!