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  1. Office Space
  2. WA
  3. Seattle

Two Union Square

For Lease 128,745 SF

601 Union Street, Seattle, WA 98101

Rental Details

  • Number of spaces 8
  • Total square feet available 128,745 SF
  • For Lease $27.50 - $34.00/SF/YR
  • Space Type General Office
  • Latest Update Sep 1, 2026
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True

8 Spaces Available

Space Name Space Type Lease Rate Total Space Floor Lease Type Expand
601 Union Street 17th Floor General Office $28.00/SF/YR 6,663 SF 17 -

601 Union Street 17th Floor

Space Type

General Office

Lease Rate

$28.00/SF/YR

Additional Rent

Price on request

Total Space Available

6,663 SF

Floor

17

Divisible Space

6,663 - 6,663 SF

Available Date

Immediate

Renewal Option

No

Sublease

Yes

Sublease Expiry

Nov 30, 2027

Turnkey

No

    • large corporate lunch room & large training room with operable wall to create large open space

    • 1 mother rooms, 1 quiet room

    • Sublease term through November 2027 | Furniture/FF&E is available

601 Union Street 18th Floor General Office $28.00/SF/YR 8,532 SF 18 -

601 Union Street 18th Floor

Space Type

General Office

Lease Rate

$28.00/SF/YR

Additional Rent

Price on request

Total Space Available

8,532 SF

Floor

18

Divisible Space

8,532 - 8,532 SF

Available Date

30 Days

Renewal Option

No

Sublease

Yes

Sublease Expiry

Nov 30, 2027

Turnkey

No

  • Open office space | internal connecting staircase to floor 19

  • Large storage rooms | server room | coffee/work rooms

  • 2 private offices | 1 large and 3 small meeting rooms 20 desks

  • Sublease term through November 2027 Furniture/FF&E is available

601 Union Street 19th Floor General Office $28.00/SF/YR 20,553 SF 19 -

601 Union Street 19th Floor

Space Type

General Office

Lease Rate

$28.00/SF/YR

Additional Rent

Price on request

Total Space Available

20,553 SF

Floor

19

Divisible Space

10,000 - 20,553 SF

Available Date

Immediate

Renewal Option

No

Sublease

Yes

Sublease Expiry

Nov 30, 2027

Turnkey

No

      • Open office space | mail room internal connecting staircase to floors 20 & 18

      • 2 meeting rooms | 2 breakout spaces | 6 private offices | 121 desks | 12 touch-down desks

      • Large storage rooms | 1 quiet room | server room | coffee/ work rooms

      • Sublease term through November 2027 Furniture/FF&E is available

601 Union Street 20th Floor General Office $28.00/SF/YR 20,553 SF 20 -

601 Union Street 20th Floor

Space Type

General Office

Lease Rate

$28.00/SF/YR

Additional Rent

Price on request

Total Space Available

20,553 SF

Floor

20

Divisible Space

10,000 - 20,553 SF

Available Date

Immediate

Renewal Option

No

Sublease

Yes

Sublease Expiry

Nov 30, 2027

Turnkey

No

        • Main reception area, internal connecting staircase to floors 19 & 21

        • 8 private offices | open office space | 131 desks 2 break-out spaces

        • 3 meeting rooms | server room coffee/work rooms

        • Sublease term through November 2027 Furniture/FF&E is available

601 Union Street 21st Floor General Office $28.00/SF/YR 20,553 SF 21 -

601 Union Street 21st Floor

Space Type

General Office

Lease Rate

$28.00/SF/YR

Additional Rent

Price on request

Total Space Available

20,553 SF

Floor

21

Divisible Space

10,000 - 20,553 SF

Available Date

Immediate

Renewal Option

No

Sublease

Yes

Sublease Expiry

Nov 30, 2027

Turnkey

No

          • Executive reception area, kitchen, boardroom, private restroom

          • 22 private offices internal staircase connecting to floor 20

          • Four conference rooms, open office space, server room and coffee / work rooms

601 Union Street 7th Floor General Office $34.00/SF/YR 20,850 SF 7 -

601 Union Street 7th Floor

Space Type

General Office

Lease Rate

$34.00/SF/YR

Additional Rent

Price on request

Total Space Available

20,850 SF

Floor

7

Divisible Space

10,000 - 20,850 SF

Available Date

Immediate

Renewal Option

No

Sublease

Yes

Sublease Expiry

Nov 30, 2027

Turnkey

No

• Mainly open plan with meeting rooms

• Large reception area, kitchen and breakout room

• 160 desks, 11 hoteling stations, 11 (2) person

offices

• 4 small + 2 medium + 1 large meeting rooms

601 Union Street 8th Floor General Office $27.50/SF/YR 14,041 SF 8 -

601 Union Street 8th Floor

Space Type

General Office

Lease Rate

$27.50/SF/YR

Additional Rent

Price on request

Total Space Available

14,041 SF

Floor

8

Divisible Space

4,634 - 35,590 SF

Available Date

Immediate

Renewal Option

No

Sublease

Yes

Sublease Expiry

Apr 30, 2029

Turnkey

No

601 Union Street 9th Floor General Office $27.50/SF/YR 17,000 SF 9 -

601 Union Street 9th Floor

Space Type

General Office

Lease Rate

$27.50/SF/YR

Additional Rent

Price on request

Total Space Available

17,000 SF

Floor

9

Divisible Space

17,000 - 31,041 SF

Available Date

Immediate

Renewal Option

No

Sublease

Yes

Sublease Expiry

Apr 30, 2029

Turnkey

No

601 Union Street 17th Floor

Space Type
General Office
Lease Rate
$28.00/SF/YR
Total Space
6,663 SF
Floor
17
Space Type

General Office

Lease Rate

$28.00/SF/YR

Additional Rent

Price on request

Total Space Available

6,663 SF

Floor

17

Divisible Space

6,663 - 6,663 SF

Available Date

Immediate

Renewal Option

No

Sublease

Yes

Sublease Expiry

Nov 30, 2027

Turnkey

No

    • large corporate lunch room & large training room with operable wall to create large open space

    • 1 mother rooms, 1 quiet room

    • Sublease term through November 2027 | Furniture/FF&E is available

601 Union Street 18th Floor

Space Type
General Office
Lease Rate
$28.00/SF/YR
Total Space
8,532 SF
Floor
18
Space Type

General Office

Lease Rate

$28.00/SF/YR

Additional Rent

Price on request

Total Space Available

8,532 SF

Floor

18

Divisible Space

8,532 - 8,532 SF

Available Date

30 Days

Renewal Option

No

Sublease

Yes

Sublease Expiry

Nov 30, 2027

Turnkey

No

  • Open office space | internal connecting staircase to floor 19

  • Large storage rooms | server room | coffee/work rooms

  • 2 private offices | 1 large and 3 small meeting rooms 20 desks

  • Sublease term through November 2027 Furniture/FF&E is available

601 Union Street 19th Floor

Space Type
General Office
Lease Rate
$28.00/SF/YR
Total Space
20,553 SF
Floor
19
Space Type

General Office

Lease Rate

$28.00/SF/YR

Additional Rent

Price on request

Total Space Available

20,553 SF

Floor

19

Divisible Space

10,000 - 20,553 SF

Available Date

Immediate

Renewal Option

No

Sublease

Yes

Sublease Expiry

Nov 30, 2027

Turnkey

No

      • Open office space | mail room internal connecting staircase to floors 20 & 18

      • 2 meeting rooms | 2 breakout spaces | 6 private offices | 121 desks | 12 touch-down desks

      • Large storage rooms | 1 quiet room | server room | coffee/ work rooms

      • Sublease term through November 2027 Furniture/FF&E is available

601 Union Street 20th Floor

Space Type
General Office
Lease Rate
$28.00/SF/YR
Total Space
20,553 SF
Floor
20
Space Type

General Office

Lease Rate

$28.00/SF/YR

Additional Rent

Price on request

Total Space Available

20,553 SF

Floor

20

Divisible Space

10,000 - 20,553 SF

Available Date

Immediate

Renewal Option

No

Sublease

Yes

Sublease Expiry

Nov 30, 2027

Turnkey

No

        • Main reception area, internal connecting staircase to floors 19 & 21

        • 8 private offices | open office space | 131 desks 2 break-out spaces

        • 3 meeting rooms | server room coffee/work rooms

        • Sublease term through November 2027 Furniture/FF&E is available

601 Union Street 21st Floor

Space Type
General Office
Lease Rate
$28.00/SF/YR
Total Space
20,553 SF
Floor
21
Space Type

General Office

Lease Rate

$28.00/SF/YR

Additional Rent

Price on request

Total Space Available

20,553 SF

Floor

21

Divisible Space

10,000 - 20,553 SF

Available Date

Immediate

Renewal Option

No

Sublease

Yes

Sublease Expiry

Nov 30, 2027

Turnkey

No

          • Executive reception area, kitchen, boardroom, private restroom

          • 22 private offices internal staircase connecting to floor 20

          • Four conference rooms, open office space, server room and coffee / work rooms

601 Union Street 7th Floor

Space Type
General Office
Lease Rate
$34.00/SF/YR
Total Space
20,850 SF
Floor
7
Space Type

General Office

Lease Rate

$34.00/SF/YR

Additional Rent

Price on request

Total Space Available

20,850 SF

Floor

7

Divisible Space

10,000 - 20,850 SF

Available Date

Immediate

Renewal Option

No

Sublease

Yes

Sublease Expiry

Nov 30, 2027

Turnkey

No

• Mainly open plan with meeting rooms

• Large reception area, kitchen and breakout room

• 160 desks, 11 hoteling stations, 11 (2) person

offices

• 4 small + 2 medium + 1 large meeting rooms

601 Union Street 8th Floor

Space Type
General Office
Lease Rate
$27.50/SF/YR
Total Space
14,041 SF
Floor
8
Space Type

General Office

Lease Rate

$27.50/SF/YR

Additional Rent

Price on request

Total Space Available

14,041 SF

Floor

8

Divisible Space

4,634 - 35,590 SF

Available Date

Immediate

Renewal Option

No

Sublease

Yes

Sublease Expiry

Apr 30, 2029

Turnkey

No

601 Union Street 9th Floor

Space Type
General Office
Lease Rate
$27.50/SF/YR
Total Space
17,000 SF
Floor
9
Space Type

General Office

Lease Rate

$27.50/SF/YR

Additional Rent

Price on request

Total Space Available

17,000 SF

Floor

9

Divisible Space

17,000 - 31,041 SF

Available Date

Immediate

Renewal Option

No

Sublease

Yes

Sublease Expiry

Apr 30, 2029

Turnkey

No

Contacts

broker
Tim Holt

Washington Holdings

broker
Mark Barbieri

Washington Holdings

broker
Thomas M. Newell

Washington Holdings

Building Details

  • For Lease $27.50 - $34.00/SF/YR
  • Property Type Office - General Office
  • Property Size 1,126,428 SF
  • Lot Size 2.06 Acre
  • Additional Rent Price on request
  • Parking Spaces Avail. 720
  • Parking Ratio 0.64 / 1,000 SF
  • Property Tenancy Multi-Tenant
  • LEED Certified Platinum
  • Building Class A+
  • Year Built 1989
  • Date Updated Sep 1, 2026

Location

  • City Seattle, WA
  • Neighborhood Seattle Central Business District
  • Zip Code 98101
  • Market Seattle
  • Map
  • Street
  • Walk score 98/100 Walker's Paradise
  • Transit score 100/100 Rider's Paradise
  • Bike score 76/100 Very Bikeable
Powered by Walk Score ®

Points of Interest

5th Avenue & Pine Street

0.19 miles

5th Avenue

0.22 miles

3rd Avenue & Pine Street

0.26 miles

Westlake Hub

0.29 miles

Westlake And 7th

0.40 miles

Pioneer Square Station

0.48 miles

Pioneer Square

0.52 miles

Broadway & Marion

0.56 miles

Westlake & 9th-Denny

0.59 miles

Seattle

0.63 miles

ChargePoint

0.31 miles

76

0.50 miles

Greenlots

0.59 miles

Blink

0.59 miles

EVgo

0.72 miles

Shell

0.77 miles

Electrify America

0.87 miles

7-Eleven

1.02 miles

Volta

1.48 miles

Charge Seattle

2.71 miles

6th Avenue Garage - Hilton Seattle Parking

0.07 miles

IBM Building Parking

0.11 miles

Decatur Building

0.15 miles

Olympic Garage

0.19 miles

Cobb Garage

0.20 miles

9th Avenue Garage

0.20 miles

Century Square Garage

0.21 miles

Impark

0.23 miles

Sorreano Parking Garage

0.26 miles

1201 Third Avenue Parking

0.26 miles

Hertz

0.14 miles

Tempus Detailing

0.19 miles

Budget

0.26 miles

Avis

0.26 miles

Mutual Detail

0.27 miles

Zipcars

0.29 miles

National

0.32 miles

SIXT

0.32 miles

Enterprise

0.32 miles

Zipcar

0.66 miles

Cortina

0.01 miles

World Fresh Asian Eatery

0.01 miles

Evergreens

0.04 miles

Fresh Table Cafe

0.04 miles

MOD Pizza

0.05 miles

Blue Water Taco Grill

0.06 miles

Sushi Kudasai

0.06 miles

Jimmy John's

0.06 miles

Wildfire Taqueria

0.06 miles

Redtrees

0.07 miles

Nordstrom

0.20 miles

Pacific Place

0.22 miles

Ross

0.22 miles

Westlake Center

0.25 miles

Target

0.30 miles

H Mart

0.35 miles

Metropolitan Deli + Cafe

0.45 miles

Whole Foods Market

0.55 miles

City Market

0.56 miles

QFC

0.60 miles

ZoomCare

0.05 miles

Downtown Seattle Medical Center

0.06 miles

Virginia Mason Hospital & Seattle Medical Center

0.24 miles

Walgreens

0.25 miles

Passport Health Downtown Seattle Travel Clinic

0.25 miles

Seattle Infectious Disease Clinic

0.25 miles

Optum Madison Center

0.27 miles

CVS Pharmacy

0.31 miles

Seattle Surgery Center

0.36 miles

Chesterfield Services

0.37 miles

Listing Summary

  • Office Space Available at 601 Union Street

    Office space currently available at 601 Union Street adds up to a total of 128,745 square feet across 8 listing(s). The largest individual space listed offers 20,850 square feet. Property use types available for lease at this property include: general office. Sublease opportunities at 601 Union Street include 8 space(s).

  • Learn More about 601 Union Street

    601 Union Street is located in the Seattle market and pertains to the 98101 zip code. The property incorporates a total of 128,745 square feet of space. 601 Union Street features a parking ratio of 0.64 / 1,000 SF, offering a total of 720 parking spaces. 601 Union Street was built in 1989.

    Interested in researching more about this property? Access in-depth research on 601 Union Street, including ownership details, transaction history, property characteristics, taxes, mortgage data, violations and more by creating a free account and viewing the full property report.

  • Get to Know the Neighborhood

    In the Seattle Central Business District neighborhood, where 601 Union Street is located, you can currently find 929 office space(s) for rent. In total, this amounts to 9,169,323 square feet of available office space for lease opportunities.

Contact Two Union Square
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