Updated: Jun 30, 2026
Location
Address
130 SPRUCE STREET, Potlatch, ID, 83855
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Mastermyr Building & Design Construction
Mastermyr Building & Design LLC, 130 Spruce St, Onaway, ID (Owned by: John Shannon, Dylan Silva, Heather Shannon) holds a General Contractor Registration license according to the Idaho license board.
Their BuildZoom score of 82 does not rank in the top 50% of Idaho contractors.
Their license was verified as active when we last checked. If you are thinking of hiring Mastermyr Building & Design LLC, we recommend double-checking their license status with the license board and using our project planner to get competitive quotes.
Mastermyr Building & Design LLC Services
Start a project today:
Custom Home Build
New Home Construction
Other Residential New Const...
Multi-Room Remodel
Kitchen Remodel
Bathroom Remodel
Basement Remodel
Other Residential Remodel
Framing
Wood Fences
Flatwork Concrete
Foundations
Other Concrete
Garage Construction
Gutters and Flashing
Small Multi-Family New Cons...
Small Multi-Family Remodel ...
Whole Home Remodel
Modular Home Construction
Addition
Vertical Addition
Horizontal Addition
Vertical and Horizontal Add...
Attic Remodel
Single Room Remodel
Cosmetic Remodel
Mastermyr Building & Design LLC Contact Information
Phone Number: (208) 310-3821
Address: 130 SPRUCE STREET, Onaway, ID 83855
Recent Buildzoom Projects
Verified License
BuildZoom confirmed this contractor's license
Mastermyr Building & Design LLC License info
Verified License
| License # | RCE-62757 |
| Status | Active |
| State | Idaho |
| Type | General Contractor Registration |
- BuildZoom verified this license was active as of June 2026.
Verify this license's status for Mastermyr Building & Design LLC at the State of Idaho Bureau Of Occupational Licenses.
This is a sample of licensing data; click here to access a complete history.
82
BuildZoom Score
Mastermyr Building & Design LLC Employees
JS
John Shannon, Dylan Silva, Heather Shannon
Owner
Do not waste you money They have no clue what they are doing you’ll never get your project done. It’s one excuse after another