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Location and Projects

Address
7490 85th Ave SE, Mercer Island, WA, 98040
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Root Cause Landscape Contractor

Root Cause was founded by ISA certified arborist and professional tree care specialist, Brian Holers. Brian and his team team provide an array of tree protection services in the Seattle area including tree protection during construction, sidewalk repair, root pruning, porous paving, air excavation and habitat restoration.

Website
https://www.rootcauseseattle.com/

From BuildZoom: Root Cause LLC, 7490 85th Ave SE, Mercer Island, WA (Employee: Brian Holers) holds a Construction Contractor, Landscaping license and 1 other license according to the Tukwila license board.

Their BuildZoom score of 102 ranks in the top 11% of 128,670 Washington licensed contractors.

Their license was verified as active when we last checked. If you are thinking of hiring Root Cause LLC, we recommend double-checking their license status with the license board and using our project planner to get competitive quotes.

Root Cause LLC Services

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Root Cause LLC Contact Information

Phone: (206) 799-9837
Address: 7490 85th Ave SE, Mercer Island, WA 98040

Building Permits by Root Cause LLC

Sort by: Notable Notable | Date Date | Job Value Job Value
Remove row tree
Valuation:
N/A
Permit #:
2509-228
Status:
approved
Fee:
$256
Permit Type:
N/A
Building Type:
N/A
Remove 6 trees rpl w 10 trees
Valuation:
N/A
Permit #:
2308-089
Status:
issued
Fee:
$0
Permit Type:
N/A
Building Type:
N/A
Remove 4 trees rpl w 18 trees
Valuation:
N/A
Permit #:
2309-220
Status:
approved
Fee:
$154
Permit Type:
N/A
Building Type:
N/A
Rightofway use
2025-09-25
Remove row tree
Valuation:
N/A
Permit #:
2509-229
Status:
triage
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Rightofway use
2019-12-04
Row tree removal under 2018 annual tree work permit
Valuation:
N/A
Permit #:
1811-264
Status:
expired
Fee:
$194
Permit Type:
N/A
Building Type:
N/A

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