Updated: Jun 02, 2026
Location
Address
PO BOX 759, Winthrop, WA, 98862
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Intraspectrum Construction
Intraspectrum LLC, Winthrop, Po Box 759, Winthrop, WA (Employees: BLETHEN, JOHN P and John Blethen) holds a Construction Contractor, General license and 2 other licenses according to the Tukwila license board.
Their BuildZoom score of 94 ranks in the top 24% of 128,670 Washington licensed contractors.
Their license was verified as active when we last checked. If you are thinking of hiring Intraspectrum LLC, we recommend double-checking their license status with the license board and using our project planner to get competitive quotes.
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Intraspectrum LLC Contact Information
Phone Number: (509) 996-3220
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Address: PO BOX 759, Winthrop, WA 98862
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Verified License
BuildZoom confirmed this contractor's license
Intraspectrum LLC License info
License Not Verified
| License # | INTRAL*951KR |
| Status | Active |
| City | Tukwila |
| Type | Construction Contractor, General |
| Class | Limited Liability Company |
| Business Type | Limited Liability Company |
- When BuildZoom last verified this license, it had an expiration date of May, 2026. Check the current license status of Intraspectrum LLC with the The City of Tukwila, WA
This is a sample of licensing data; click here to access a complete history.
Verified License
| License # | INTRAL*951KR |
| Status | Active |
| State | Washington |
| Type | Construction Contractor, Construction Contractor |
| Business Type | Limited Liability Company |
- BuildZoom verified this license was active as of June 2026.
Verify this license's status for Intraspectrum LLC at the Washington State Department of Labor & Industries.
This is a sample of licensing data; click here to access a complete history.
License Not Verified
| License # | INTRAL 951KR |
| Status | Active |
| State | Washington |
| Type | Construction Contractor, General |
| Business Type | Limited Liability Company |
- When BuildZoom last verified this license, it had an expiration date of July, 2017. Check the current license status of Intraspectrum LLC with the Washington State Department of Labor & Industries
This is a sample of licensing data; click here to access a complete history.
94
BuildZoom Score
Insured
| Insurer | Hartford Casualty Ins Co |
| Insured up to | $1,000,000 |
Bonded
| Bonded Agent | Developers Surety & Indem Co |
| Bond Value | $12,000 |
Intraspectrum LLC Employees
BP
BLETHEN, JOHN P
Manager
JB
John Blethen
Manager