Updated: May 15, 2026
Location and Projects
Address
18745 80TH AVE NE, Kenmore, WA, 98028
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Thornley Plumbing LLC
Thornley Plumbing LLC, 18745-80 Th Ave NE, Kenmore, WA (Owned by: Thornley, Leslie James) holds a Plumbing Contractor, Residential license and 4 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 Thornley Plumbing LLC, we recommend double-checking their license status with the license board and using our project planner to get competitive quotes.
Thornley Plumbing LLC Services
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Thornley Plumbing LLC Contact Information
Phone Number: (206) 372-5196
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Address: 18745 80TH AVE NE, Kenmore, WA 98028
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Building Permits by Thornley Plumbing LLC
This is a sample of this contractor's permits. Click here to access their complete permit history.
Karim addition - plumbing to support new addition including relocating/remodeling three bathrooms and a laundry room and adding two hose bibs. customer paid for (1) bathtub (1) clothes washer (2) hose bibs (1) shower/valve replacement (5) sinks(bathroom) (1) sink(utility) and (3) toilets. total of (14) fixtures
Valuation:
$12,500
Permit #:
PLUM-2018-03842
Status:
final
Fee:
$271
Permit Type:
N/A
Building Type:
N/A
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Verified License
BuildZoom confirmed this contractor's license
Thornley Plumbing LLC License info
Verified License
| License # | THORNPL764RL |
| Status | Active |
| City | Tukwila |
| Type | Plumbing Contractor, Residential |
| Class | Limited Liability Company |
| Business Type | Limited Liability Company |
- BuildZoom verified this license was active as of March 2026.
Verify this license's status for Thornley Plumbing LLC at the The City of Tukwila, WA.
This is a sample of licensing data; click here to access a complete history.
Verified License
| License # | THORNPL764RL |
| Status | Active |
| State | Washington |
| Type | Plumbing Contractor, Plumbing Contractor |
| Business Type | Limited Liability Company |
- BuildZoom verified this license was active as of February 2026.
Verify this license's status for Thornley Plumbing LLC 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 # | THORNPL833DC |
| Status | Inactive |
| City | Tukwila |
| Type | Construction Contractor, Plumbing |
| Class | Limited Liability Company |
| Business Type | Limited Liability Company |
- 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 Thornley Plumbing LLC at the The City of Tukwila, WA.
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | THORNPL833DC |
| Status | Inactive |
| State | Washington |
| Type | Construction Contractor, Construction Contractor |
| Business Type | Limited Liability Company |
- 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 Thornley Plumbing LLC 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 # | THORNP*896DG |
| Status | Inactive |
| State | Washington |
| Type | Construction Contractor, Construction Contractor |
| Business Type | Limited Liability Company |
- 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 Thornley Plumbing LLC at 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 | Ohio Security Ins Co |
| Insured up to | $300,000 |
Bonded
| Bonded Agent | American Contractors Indem Co |
| Bond Value | $6,000 |
Thornley Plumbing LLC Employees
LT
Leslie Thornley
Partner/Member
TJ
Thornley, Leslie James
Owner