Updated: Mar 27, 2026
Location and Projects
Address
305 E STEWART RD, Mount Vernon, WA, 98273
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Williamson Construction
Williamson Construction, 305 E Stewart Rd, Mount Vernon, WA (Owned by: Williamson, Thomas) holds a Construction Contractor, General license and 1 other license according to the Tukwila license board.
Their BuildZoom score of 95 ranks in the top 22% of 128,670 Washington licensed contractors.
Their license was verified as active when we last checked. If you are thinking of hiring Williamson Construction, we recommend double-checking their license status with the license board and using our project planner to get competitive quotes.
Williamson Construction Services
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Williamson Construction Contact Information
Phone Number: (360) 201-6876
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Address: 305 E STEWART RD, Mount Vernon, WA 98273
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Williamson Construction Mount Vernon
Quality
95
78th percentile
Pro tip:
We generally recommend hiring a contractor with a score higher than 95.
Williamson Construction has a BuildZoom score of 95, which places them above 78% of 128,670 contractors in Washington.
Activity
|
1 project
|
2023 |
Our building permit records indicate that Williamson Construction has worked on at least
1.0 project over the past 3 years.
This is an overview of this contractor's activity. Click here to access our complete licensing and building permit database.
This is an overview of this contractor's activity. Click here to access our complete licensing and building permit database.
Pricing
|
1 project
|
$50k-$100k |
Pro tip:
For more details about their pricing, check out their recent activity to see how much they have charged for different types of work.
Building Permits by Williamson Construction
This is a sample of this contractor's permits. Click here to access their complete permit history.
New single family residence mainlvl 681sf upperlvl 939sf pourch 55sf w/attached 387 garage - 3 bed 2.5 bathroom totalsf=2062
Valuation:
$205,255
Permit #:
SFR2021-00502
Status:
issued
Fee:
N/A
Permit Type:
Single-family
Building Type:
N/A
New single family residence mainlvl 681sf upperlvl 939sf decks 55sf w attached 387sf garage 3 bed- 2.5 bathroom totalsf=2062
Valuation:
$205,255
Permit #:
SFR2021-00404
Status:
issued
Fee:
N/A
Permit Type:
Single-family
Building Type:
N/A
New single family residence mainlvl681sf upperlvl 991sf decks55sf w/attached 387sf garage - 3 bed 2.5 bathroom totalsf=2114
Valuation:
$205,255
Permit #:
SFR2021-00265
Status:
issued
Fee:
N/A
Permit Type:
Single-family
Building Type:
N/A
New 1548sf single family residence w/attached 371sf garage - 3 bed 2.5 bathroom 55sf of covered area
Valuation:
$196,255
Permit #:
SFR2021-00011
Status:
issued
Fee:
N/A
Permit Type:
Single-family
Building Type:
N/A
Re-siding install new window & install relite at admin building
Valuation:
$125,000
Permit #:
COM2021-00132
Status:
issued
Fee:
N/A
Permit Type:
Commercial
Building Type:
N/A
Installation of 1152 sf play shed structure adjacent to erc building
Valuation:
$26,496
Permit #:
COM2021-00077
Status:
issued
Fee:
N/A
Permit Type:
Commercial
Building Type:
N/A
Water and sewer services
Valuation:
N/A
Permit #:
PBW2021-0078
Status:
final
Fee:
$1,733
Permit Type:
Combination
Building Type:
N/A
Construction of a private driveway for sub2020-0031
Valuation:
$70,000
Permit #:
FIR2021-0005
Status:
final
Fee:
$345
Permit Type:
Fire apparatus ac...
Building Type:
N/A
New single family residence w/attached garage - 3 bed 2 bathroom main-1842sf 2nd-565sf gar-968sf porches-499sf
Valuation:
$334,682
Permit #:
SFR2020-00173
Status:
issued
Fee:
N/A
Permit Type:
Single-family
Building Type:
N/A
No Description Available
Valuation:
N/A
Permit #:
22110827DEMO
Status:
issued
Fee:
$305
Permit Type:
N/A
Building Type:
N/A
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Williamson Construction Reviews
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Recent Buildzoom Projects
Verified License
BuildZoom confirmed this contractor's license
Williamson Construction License info
Verified License
| License # | WILLIC*756MZ |
| Status | Active |
| City | Tukwila |
| Type | Construction Contractor, General |
| Class | Individual |
| Date Issued | 07-09-2025 |
- BuildZoom verified this license was active as of March 2026.
Verify this license's status for Williamson Construction at the The City of Tukwila, WA.
This is a sample of licensing data; click here to access a complete history.
License Not Required
| Status | Not Required |
- BuildZoom verified in February, 2022 that this contractor does not need a license to be a contractor in Washington.
This is a sample of licensing data; click here to access a complete history.
95
BuildZoom Score
9
Permits
- Building permit records show that Williamson Construction has worked on 9 permitted projects.
Williamson Construction Employees
WT
Williamson, Thomas
Owner