Updated: May 26, 2026
Location and Projects
Address
9316 W ARGENT, Pasco, WA, 99301
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Winthrop Construction Inc
Winthrop Construction Inc, 9316 W Argent, Pasco, WA (Employees: Cliff Schwab, Dean, Stephen Winthrop, and Dean, Steve W) holds a Construction Contractor, General license and 4 other licenses according to the Tukwila license board.
Their BuildZoom score of 97 ranks in the top 18% of 128,670 Washington licensed contractors.
Their license was verified as active when we last checked. If you are thinking of hiring Winthrop Construction Inc, we recommend double-checking their license status with the license board and using our project planner to get competitive quotes.
Winthrop Construction Inc Services
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Winthrop Construction Inc Contact Information
Phone Number: (509) 528-9339
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Address: 9316 W ARGENT, Pasco, WA 99301
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Building Permits by Winthrop Construction Inc
This is a sample of this contractor's permits. Click here to access their complete permit history.
Install solar system
Valuation:
$34,000
Permit #:
B18-2864
Status:
final
Fee:
$803
Permit Type:
Major alter/repair
Building Type:
N/A
Steel building/franklin pud
Valuation:
$238,560
Permit #:
B15-1061
Status:
final
Fee:
$2,929
Permit Type:
Accessory structures
Building Type:
N/A
Franklin pud - 3 sided vehicle storage building
Valuation:
N/A
Permit #:
B07-0993
Status:
final
Fee:
N/A
Permit Type:
Industrial
Building Type:
N/A
Bio solids 3 sided steel building
Valuation:
N/A
Permit #:
B08-0233
Status:
final
Fee:
N/A
Permit Type:
Public works
Building Type:
N/A
Phase 2 - broadmoor storage solutions
Valuation:
N/A
Permit #:
B06-0943
Status:
final
Fee:
N/A
Permit Type:
Industrial
Building Type:
N/A
Fire dept vehicle storage building
Valuation:
N/A
Permit #:
B08-1183
Status:
final
Fee:
N/A
Permit Type:
Industrial
Building Type:
N/A
Concrete masonry unit block building
Valuation:
$18,905
Permit #:
B11-0336
Status:
final
Fee:
$511
Permit Type:
Major alter/repair
Building Type:
N/A
Karne max - mexican deli/meat mkt
Valuation:
N/A
Permit #:
B10-0952
Status:
final
Fee:
N/A
Permit Type:
Store
Building Type:
N/A
Concrete floor addition/convert ice rink to storage area
Valuation:
N/A
Permit #:
B05-0502
Status:
expired
Fee:
N/A
Permit Type:
Major alter/repair
Building Type:
N/A
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Winthrop Construction Inc Reviews
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Recent Buildzoom Projects
Verified License
BuildZoom confirmed this contractor's license
Winthrop Construction Inc License info
Verified License
| License # | WINTHCI066KO |
| Status | Active |
| City | Tukwila |
| Type | Construction Contractor, General |
| Class | Corporation |
| Business Type | Corporation |
- BuildZoom verified this license was active as of March 2026.
Verify this license's status for Winthrop Construction Inc at the The City of Tukwila, WA.
This is a sample of licensing data; click here to access a complete history.
Verified License
| License # | WINTHCI066KO |
| Status | Active |
| State | Washington |
| Type | Construction Contractor, Construction Contractor |
| Business Type | Corporation |
- BuildZoom verified this license was active as of May 2026.
Verify this license's status for Winthrop Construction Inc at the Washington State Department of Labor & Industries.
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | WINTHWW988DD |
| Status | Inactive |
| City | Tukwila |
| Type | Construction Contractor, Cabinets, Millwork And Finish Carpentry |
| Class | Corporation |
| Business Type | Corporation |
- According to the The City of Tukwila, WA, the status of this license was at one point cancelled. However, this information may have changed. If this is your business, please update your license status.
Check this license's status for Winthrop Construction Inc at the The City of Tukwila, WA.
This is a sample of licensing data; click here to access a complete history.
Inactive License
| Status | Inactive |
| City | Pasco |
| Type | Contr Commercial |
| Business Type | Corporation |
- According to the The City of PASCO, WA, the status of this license was at one point cancelled. However, this information may have changed. If this is your business, please update your license status.
Check this license's status for Winthrop Construction Inc at the The City of PASCO, WA.
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | WINTHWW988DD |
| Status | Inactive |
| State | Washington |
| Type | Construction Contractor, Construction Contractor |
| Business Type | Corporation |
- According to the Washington State Department of Labor & Industries, the status of this license was at one point cancelled. However, this information may have changed. If this is your business, please update your license status.
Check this license's status for Winthrop Construction Inc at the Washington State Department of Labor & Industries.
This is a sample of licensing data; click here to access a complete history.
97
BuildZoom Score
Insured
| Insurer | Cincinnati Ins Co |
| Insured up to | $1,000,000 |
Bonded
| Bonded Agent | Cbic |
| Bond Value | $12,000 |
8
Permits
- Building permit records show that Winthrop Construction Inc has worked on 8 permitted projects.
Winthrop Construction Inc Employees
CS
Cliff Schwab
President
DW
Dean, Stephen Winthrop
President
DW
Dean, Steve W
Governing Persons
JS
Joy Schwab
Secretary
SF
Schwab, Cliff Floyd
President
SE
Schwab, Joy E
Treasurer
SD
Stephen Dean
President