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.
Tour Union Square
Play VideoUnion 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.
One Union Square
Floor 03, Suite 314
RSF — 2118
Available Now
One Union Square
Floor 03, Suite 320
RSF — 2517
Available Now
One Union Square
Floor 04, Suite 416
RSF — 1746
Available Now
One Union Square
Floor 04, Suite 410
RSF — 6201
Available Now
One Union Square
Floor 05, Suite 500
RSF — 15794
Available 12/1/23
One Union Square
Floor 06, Suite 600
RSF — 4845
Available 12/1/23
One Union Square
Floor 06, Suite 620
RSF — 2650
Available Now
One Union Square
Floor 07, Suite 710
RSF — 4924
Available Now
One Union Square
Floor 08, Suite 830
RSF — 1037
Available Now, Medical Dental Space
One Union Square
Floor 11, Suite 1100
RSF — 18832
Available Now
One Union Square
Floor 13, Suite 1312 + 1400
RSF — 28310
Available Now
One Union Square
Floor 15, Suite 1528
RSF — 2458
Available Now
One Union Square
Floor 15, Suite 1500
RSF — 9731
Available 2/1/24
One Union Square
Floor 17, Suite 1720
RSF — 2727
Available Now
One Union Square
Floor 18, Suite 1810
RSF — 7455
Available Now
One Union Square
Floor 20, Suite 2000
RSF — 6161
Available Now
One Union Square
Floor 22, Suite 2205
RSF — 5789
Available Now
One Union Square
Floor 22, Suite 2200 + 2205
RSF — 18854
Available Now
One Union Square
Floor 23, Suite 2326
RSF — 569
Available Now
One Union Square
Floor 25, Suite 2523
RSF — 784
Available Now
One Union Square
Floor 27, Suite 2710
RSF — 3752
Available Now
One Union Square
Floor 28, Suite 2808
RSF — 3253
Available 10/1/24
One Union Square
Floor 30, Suite 3018
RSF — 998
Available Now
One Union Square
Floor 30, Suite 3015
RSF — 1438
Available Now
One Union Square
Floor 31, Suite 3100
RSF — 19605
Available 2/1/24
One Union Square
Floor 32, Suite 3225
RSF — 2637
Available 1/1/2024
One Union Square
Floor 32, Suite 3220
RSF — 6955
Available 2/1/24
Two Union Square
Floor 03, Suite 330
RSF — 2682
Available Now
Two Union Square
Floor 04, Suite 400
RSF — 5499
Available Now
Two Union Square
Floor 06, Suite 622
RSF — 2140
Available Now
Two Union Square
Floor 13, Suite 1300
RSF — 21547
Available Now
Two Union Square
Floor 16, Suite 1600
RSF — 7858
Available Now
Two Union Square
Floor 16, Suite 1606
RSF — 2709
Available Now
Two Union Square
Floor 27, Suite 2710
RSF — 12183
Available 2/1/24
Two Union Square
Floor 27, Suite 2727
RSF — 3855
Available 12/1/23
Two Union Square
Floor 29, Suite 2923
RSF — 1086
Available Now
Two Union Square
Floor 30, Suite 3030
RSF — 3289
Available 12/1/23
Two Union Square
Floor 32, Suite 3216
RSF — 1837
Available 4/1/24
Two Union Square
Floor 32, Suite 3230
RSF — 1764
Available Now
Two Union Square
Floor 33, Suite 3300
RSF — 3862
Available Now
Two Union Square
Floor 49, Suite 4800 + 4930
RSF — 31485
Available Now
| Floor | Suite | RSF | Availability | Leasing PDF | 3d Tour | Video Tour |
|---|---|---|---|---|---|---|
| 03 | 314 | 2118 | Now | View | ||
| 03 | 320 | 2517 | Now | View | ||
| 04 | 416 | 1746 | Now | View | ||
| 04 | 410 | 6201 | Now | View | ||
| 05 | 500 | 15794 | 12/1/23 | View | ||
| 06 | 600 | 4845 | 12/1/23 | View | ||
| 06 | 620 | 2650 | Now | View | ||
| 07 | 710 | 4924 | Now | View | ||
| 08 | 830 | 1037 | Now, Medical Dental Space | View | ||
| 09 | 900 | 6014 | Now | View | View | |
| 10 | 1028 | 2855 | Now | View | View | |
| 11 | 1100 | 18832 | Now | View | ||
| 13 | 1312 + 1400 | 28310 | Now | View | ||
| 15 | 1528 | 2458 | Now | View | ||
| 15 | 1500 | 9731 | 2/1/24 | View | ||
| 16 | 1617 | 1058 | Now | View | View | |
| 17 | 1720 | 2727 | Now | View | ||
| 18 | 1810 | 7455 | Now | View | ||
| 20 | 2000 | 6161 | Now | View | ||
| 22 | 2200 | 13065 | Now | View | View | |
| 22 | 2205 | 5789 | Now | View | ||
| 22 | 2200 + 2205 | 18854 | Now | View | ||
| 23 | 2326 | 569 | Now | View | ||
| 24 | 2420 | 4346 | Now | View | View | |
| 25 | 2523 | 784 | Now | View | ||
| 27 | 2710 | 3752 | Now | View | ||
| 28 | 2808 | 3253 | 10/1/24 | View | ||
| 30 | 3018 | 998 | Now | View | ||
| 30 | 3015 | 1438 | Now | View | ||
| 31 | 3100 | 19605 | 2/1/24 | View | ||
| 32 | 3225 | 2637 | 1/1/2024 | View | ||
| 32 | 3220 | 6955 | 2/1/24 | View |
| Floor | Suite | RSF | Availability | Leasing PDF | 3d Tour | Video Tour |
|---|---|---|---|---|---|---|
| 01 | 1322 6th Ave | 6844 | Now | View | View | View |
| 03 | 330 | 2682 | Now | View | ||
| 04 | 400 | 5499 | Now | View | ||
| 04 | 425 | 2636 | Now | View | View | |
| 05 | 520 | 5080 | Now | View | View | |
| 06 | 622 | 2140 | Now | View | ||
| 13 | 1300 | 21547 | Now | View | ||
| 16 | 1622 | 1651 | Now | View | View | |
| 16 | 1600 | 7858 | Now | View | ||
| 16 | 1634 | 678 | Now | View | View | |
| 16 | 1606 | 2709 | Now | View | ||
| 27 | 2710 | 12183 | 2/1/24 | View | ||
| 27 | 2727 | 3855 | 12/1/23 | View | ||
| 29 | 2923 | 1086 | Now | View | ||
| 30 | 3030 | 3289 | 12/1/23 | View | ||
| 32 | 3216 | 1837 | 4/1/24 | View | ||
| 32 | 3230 | 1764 | Now | View | ||
| 32 | 3225 | 3236 | Now | View | View | |
| 33 | 3300 | 3862 | Now | View | ||
| 35 | 3501 | 2708 | Now | View | View | |
| 37 | 3727 | 2529 | Now, elevator lobby exposure | View | View | |
| 48 | 4800 | 22566 | Now | View | View | View |
| 49 | 4930 | 8919 | Now | View | View | View |
| 49 | 4800 + 4930 | 31485 | Now | View | ||
| 53 | 5301 | 2635 | Now | View | View | |
| 54 | 5400 | 17461 | Now | View | View | View |
Two Union Square
One Union Square
Leasing Contact
Discover Two Union Square
Visit NewTwoUnion.com
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Awards, Certifications, and Notable Reviews
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LEED Certified 2009, LEED Platinum Certified 2015
Certification of One and Two Union Square
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Energy Star: One Union = 99, Two Union = 95
One and Two Union Square
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BOMA Building of the Year 1999/2000
Two Union Square
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NWCP Outstanding Projects 2019
Suspended Ceiling Award for the New Two Union Lobby
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Puget Sound Blood Center 2011
Union Square Community Service Award
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Featured in Architecture and Urbanism 1991
Two Union Square
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2022 National Award for Interior Architecture
Two Union Square Repositioning
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Sustainability
We are committed to maintaining buildings at the forefront of environmental design and operation. Both One and Two Union Square received LEED Platinum certification in 2015.
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Flexibility
The two buildings total roughly 1,837,920 SF with approximately 19,000 to 22,500 SF floor plates per floor. The two buildings are connected by a fireplace lobby and indoor pedestrian concourse to the neighborhood.
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Conference Rooms
Union Square offers three conference rooms. In addition to our Union Square Boardroom, and our 3rd Floor Conference Room, we have a three-room conference center on the 51st Floor of Two Union Square, boasting spectacular views and contemporary amenities.
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Union Square Courtyard
Our courtyard offers year-round comforts with heated and covered seating options, encouraging connections and relaxation. With a Cascading waterfall, beautiful trees, granite rocks, and flowers as its centerpiece, the Union Square courtyard is one of Seattle’s hidden jewels.
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Parking
The 1,021-stall parking garage, including Tesla Supercharger and EV charging stations, offers tenants and visitors an unmatched convenience. Weekdays offer complimentary Valet parking and low evening and weekend rates of $7 are now available. Evenings start at 5pm-close, and weekends are Sat-Sun.
Check Parking Rates
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 renowned 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:
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Cortina
206-736-7888Hours: 11:00am - 9:00pm
www.cortinaseattle.com -
Cortina Café
206-946-9336Hours: 7:00am - 3:00pm
www.cortinaseattle.com/cafe -
Dimples Gifts & Sundries One Union Square
206-622-1866Hours: 9:00am - 2:00pm
One Union Square -
Evergreens
Hours: 10:00am - 3:00pm
www.evergreens.com -
Floral Masters
206-838-7290Hours: 8:00am - 3:00pm
www.floralmasters.net -
HomeStreet Bank
206-621-0100Hours: 9:00am - 5:00pm
www.homestreetbank.com -
MOD Super Fast Pizza
206-332-0200Hours: 10:30am - 10:00pm
www.modpizza.com
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Old Style Shoe Shine & Repair
206-453-4063Hours: 10:00am - 6:00pm
oldstyleshoeshinerepair.com -
Sean’s Place
206-405-3437Hours: 7:00am - 3:00pm
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Starbucks
206-264-2534Hours: 5:30am - 5:30pm
www.starbucks.com -
Primo Cleaner & Tailor
206-565-7337Hours: 8:00am - 5:00pm
www.primocleanertailor.com -
Walla Walla Farms Cafe
206-381-5730Hours: 8:00am - 2:00pm
www.wallawallafarms.com -
World Fresh Asian Eatery
206-622-7752Hours: 11:00am - 2:30pm
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.
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!