Updated: May 16, 2026
Location and Projects
Address
4216 6th Ave NW, Seattle, WA, 98107
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Thomaswerks Construction
Serving the greater Seattle area, Thomaswerks Construction focuses on high-end custom residential projects as well as boutique commercial builds. With two decades in the construction industry, the company brings experience and expertise to clients seeking luxury homes and distinctive small-scale commercial spaces. Their project portfolio demonstrates a commitment to sustainable building practices, incorporating eco-friendly materials, solar power, energy-efficient design, and water catchment systems into their construction methods. Thomaswerks Construction operates in neighborhoods throughout Seattle, as well as in the Methow Valley and the San Juan Islands. The team emphasizes collaboration with clients, architects, and other professionals to realize projects that balance contemporary design with environmental responsibility.
Thomaswerks Construction Services
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Thomaswerks Construction Contact Information
Phone Number: (206) 420-7940
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Address: 4216 6th Ave NW, Seattle, WA 98107
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Building Permits by Thomaswerks Construction
This is a sample of this contractor's permits. Click here to access their complete permit history.
Type: building single family class: alteration to structure or system *rowe residence repairs - interior repairs and exterior deck repair with new beam. window glass replacement for 5 windows
Valuation:
N/A
Permit #:
BSF23-06630
Status:
issued
Fee:
$4,850
Permit Type:
N/A
Building Type:
N/A
Vasco residence - side sewer full interior remodel of house scope added to rebuild deck and under deck slab. construction permit #: 6940875-cn purpose of side sewer permit application is to repair wye for downspout to catch basin
Valuation:
N/A
Permit #:
7008864-SS
Status:
issued
Fee:
$450
Permit Type:
Repair
Building Type:
Single family/duplex
Type: building single family class: alteration to structure or system, , parson cabana restoration: replace existing siding roofing windows doors bathroom fixtures cabinets & interior finishes. remove 48 x 48 skylight. replace rotten materials as needed & upgrade foundation as required. seismic retrofit of house perm structural engineer's direction
Valuation:
N/A
Permit #:
BSF19-05983
Status:
final
Fee:
$2,279
Permit Type:
N/A
Building Type:
N/A
Side sewer on-site work only for new sanitary to existing side sewer and new drainage to curb weep hole for construction of a single family home (6608487-cn). (row work for new curb weep must be under a separate permit pulled by an rssc): mrk 01/22/2020: permit renewed until 7/22/2020
Valuation:
$773,885
Permit #:
6678513-SS
Status:
issued
Fee:
$1,559
Permit Type:
New
Building Type:
Single family/duplex
Single family residence
Valuation:
N/A
Permit #:
BUILD-24-0441
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Connecting the new casita sewage line to the existing sewage line in the front yard (east side of property) as it heads to the street bp23-1588
Valuation:
N/A
Permit #:
24 123853 UA
Status:
final
Fee:
$852
Permit Type:
N/A
Building Type:
N/A
Ufer permit - 5/20/19 - added ufer test ab
Valuation:
$3,500,000
Permit #:
6725455-EL
Status:
issued
Fee:
$354
Permit Type:
Remodel or repair
Building Type:
Single family/duplex
Change 950sf from residence to accessory use addition kitchenette to residence
Valuation:
N/A
Permit #:
REVISION-20-0048
Status:
final
Fee:
$770
Permit Type:
N/A
Building Type:
N/A
Residence - accessory structure - orcas inspections
2022-10-10
Garage
Valuation:
N/A
Permit #:
BUILD-22-0132
Status:
expired
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Single family residence
Valuation:
N/A
Permit #:
BUILD-22-0578
Status:
issued
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Demolish single family residence
Valuation:
N/A
Permit #:
DEMO-19-0105
Status:
final
Fee:
$112
Permit Type:
N/A
Building Type:
N/A
Studio cabin
Valuation:
N/A
Permit #:
BUILD-22-0672
Status:
issued
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
No Description Available
Valuation:
N/A
Permit #:
REVISION-22-0220
Status:
final
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
No Description Available
Valuation:
N/A
Permit #:
REVISION-22-0219
Status:
final
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
No Description Available
Valuation:
N/A
Permit #:
ROW-19-0063
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
No Description Available
Valuation:
N/A
Permit #:
BUILDG-19-0023
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
No Description Available
Valuation:
N/A
Permit #:
BUILDG-17-0024
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
No Description Available
Valuation:
N/A
Permit #:
BLGREV-15-0086
Status:
final
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
No Description Available
Valuation:
N/A
Permit #:
BUILDG-18-0148
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
No Description Available
Valuation:
N/A
Permit #:
BUILDG-16-0059
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
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Thomaswerks Construction License info
License Not Verified
| License # | THOMAFC861K8 |
| Status | Active |
| City | Tukwila |
| Type | Construction Contractor, General |
| Class | Corporation |
| Business Type | Corporation |
- When BuildZoom last verified this license, it had an expiration date of May, 2026. Check the current license status of Thomaswerks Construction with the The City of Tukwila, WA
This is a sample of licensing data; click here to access a complete history.
Verified License
| License # | THOMAFC861K8 |
| Status | Active |
| State | Washington |
| Type | Construction Contractor, Construction Contractor |
| Business Type | Corporation |
- BuildZoom verified this license was active as of May 2026.
Verify this license's status for Thomaswerks Construction 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 # | THOMAC*910R2 |
| Status | Inactive |
| State | Washington |
| Type | Construction Contractor, Construction Contractor |
| Business Type | Corporation |
- 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 Thomaswerks Construction at the Washington State Department of Labor & Industries.
This is a sample of licensing data; click here to access a complete history.
102
BuildZoom Score
Insured
| Insurer | Kinsale Insurance Company |
| Insured up to | $1,000,000 |
Bonded
| Bonded Agent | Travelers Casualty Company Of Connecticut |
| Bond Value | $12,000 |
50
Permits
- Building permit records show that Thomaswerks Construction has worked on 50 permitted projects.
Thomaswerks Construction Employees
CT
Christopher Thomas
President
PF
Paul Fragnoli
Treasurer
TT
Thomas, Christopher Townsend
President