Updated: Apr 16, 2026
Location and Projects
Address
9240 Greenwood Ave N, Seattle, WA, 98103
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Loken Construction Co Photos
Loken Construction Co
Our company was founded by Jay Loken, a third-generation craftsman whose construction career spanned over fifty years. He moved from Montana to Seattle in 1989 and began Loken Construction in 1992 out of the basement of his Ballard home.
Jay navigated the company through twenty-nine years of success working on projects throughout the Seattle area. Upon his retirement in 2021, his sons Carsten and Garth Loken, together with longtime employee Nate Cunningham, took over as co-owners of the company. Their experience working within the company under Jay’s guidance has led to renewed growth and expansion for Loken Construction.
From BuildZoom: Loken Construction Co, 9240 Greenwood Ave N, Seattle, WA (Employee: Loken, Jay C) holds a Construction Contractor, General license and 2 other licenses according to the Tukwila license board.
Their BuildZoom score of 110 ranks in the top 4% of 128,670 Washington licensed contractors.
Their license was verified as active when we last checked. If you are thinking of hiring Loken Construction Co, we recommend double-checking their license status with the license board and using our project planner to get competitive quotes.
Loken Construction Co 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
Decks and Porches
Doors and Windows
Other Carpentry
Flatwork Concrete
Foundations
Other Concrete
Landscape
Hardscape
Elevator Installation
Gutters and Flashing
Cabinets
Finish Carpentry
Elevator Maintenance
Retaining Walls
Patios
Deck Repair
ADU
Whole Home Remodel
Sunrooms and Greenhouses
Addition
Single Room Remodel
Pergola and Arbors
Other Outdoor Living
Gazebo and Pavilion Constru...
Loken Construction Co Contact Information
Phone Number: (206) 356-0554
Address: 9240 Greenwood Ave N, Seattle, WA 98103
Loken Construction Co Seattle
Quality
110
96th percentile
Pro tip:
We generally recommend hiring a contractor with a score higher than 95.
Loken Construction Co has a BuildZoom score of 110, which places them above 96% of 128,670 contractors in Washington.
Activity
|
3 projects
|
2025 |
|
1 project
|
2024 |
|
2 projects
|
2023 |
Our building permit records indicate that Loken Construction Co has worked on at least
6.0 projects 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
|
< $5k |
|
1 project
|
$5k-$20k |
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 Loken Construction Co
This is a sample of this contractor's permits. Click here to access their complete permit history.
Existing single family residence no change to existing footprint. no ground disturbance. limited exterior work: repairs to siding roofing and decks. replace up to (3) windows and (4) exterior doors. (1) new window location at location of new laundry room. new fire rated door assembly at attached garage. replace interior finishes throughout. minor interior structural upgrades and floor... see more
Valuation:
N/A
Permit #:
25 105507 BU
Status:
issued
Fee:
$8,174
Permit Type:
N/A
Building Type:
N/A
Girard dadu sanitary side sewer for new dadu (permit #7049137-cn) to connect to the main house side sewer in the south side yard. drainage review was not required. no drainage work included
Valuation:
$500
Permit #:
7072601-SS
Status:
issued
Fee:
$375
Permit Type:
None
Building Type:
Single family/duplex
E22-07676 darvas heller demolition demolition of existing single family residence. built in 1975. related to bsf2022-30451 permit for new single family residence. shed is 196.9 sf per applicant. permit not required since under 200 sf per the bmc title 20
Valuation:
N/A
Permit #:
DEM2022-30548
Status:
issued
Fee:
$398
Permit Type:
N/A
Building Type:
N/A
Studio addition construct addition to 2nd floor of unit 18 in existing single-family townhouse structure per plans
Valuation:
$50,000
Permit #:
6785622-CN
Status:
issued
Fee:
$1,669
Permit Type:
Add/alt
Building Type:
Multifamily
Type: building not occupied - bno class: repair, , morris dock resurfacing: replace existing 2x4 dock surface with 2x2 ipe with 1 gaps to meet the requirements of the wdfw of 40% translucence & replace perimeter facia
Valuation:
N/A
Permit #:
BNO18-06353
Status:
final
Fee:
$1,079
Permit Type:
N/A
Building Type:
N/A
Demolish and building new garage existing footprint
Valuation:
N/A
Permit #:
SFR24-2844
Status:
triage
Fee:
$2,733
Permit Type:
New building
Building Type:
N/A
Field review new side sewer to new house on lot. connect sanitary and drainage to existing combo side sewer. associated building permit 6523646
Valuation:
N/A
Permit #:
6589271-SS
Status:
complete
Fee:
$877
Permit Type:
New
Building Type:
Single family/duplex
Remodel - warren
Valuation:
N/A
Permit #:
BLD2024-03111
Status:
final
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Chu/mills remodel replace existing drainage and footing drain system and reconnect sanitary to existing side sewer (combined sewer) for house addition/alteration that includes lifting house for new basement/aadu. associated building permit #6862743-cn. no drainage plans were required
Valuation:
$8,000
Permit #:
6964171-SS
Status:
issued
Fee:
$750
Permit Type:
Addition/alteration
Building Type:
Single family/duplex
Buck studio drainage new drainage footing drains to existing combined side sewer. drainage/footing drains connection to combined sewer will require p traps or catch basin with a minimum 2-foot-deep sump with a down-turned elbow on the outlet. no sanitary sewer work
Valuation:
N/A
Permit #:
6901337-SS
Status:
complete
Fee:
$375
Permit Type:
New
Building Type:
Single family/duplex
Add/alt for new downspout drains for existing house and small addition & extend sewer for future adu under future separate permit. assoc. building permit #65310360
Valuation:
N/A
Permit #:
6568234-SS
Status:
complete
Fee:
$375
Permit Type:
Addition/alteration
Building Type:
Single family/duplex
Project name: takamoto residence demolition of existing house. construction of new single family residence with associated site work and driveway
Valuation:
N/A
Permit #:
18-100039 BS
Status:
Screening
Fee:
$0
Permit Type:
N/A
Building Type:
N/A
Storm & sanitary for new dadu connection to existing side sewer. assoc. building permit #6572076 10/24/17 atr- revised permit to new sanitary
Valuation:
N/A
Permit #:
6619025-SS
Status:
complete
Fee:
$375
Permit Type:
N/A
Building Type:
Single family/duplex
Construct addition and alterations to existing single family residence per plan
Valuation:
$101,925
Permit #:
6531060-CN
Status:
complete
Fee:
$3,057
Permit Type:
Add/alt
Building Type:
Single family/duplex
Remodel of existing office space - remove and replace structural posts/beams - voluntary seismic upgrade - mechanical & plumbing are deferred submittals
Valuation:
$150,000
Permit #:
BLD20141246
Status:
final
Fee:
$3,022
Permit Type:
N/A
Building Type:
04 - alteration/r...
Construct deck addition and alterations to existing single fmaily residence per plot plan subject to field inspection (stfi)
Valuation:
$100,000
Permit #:
6409122-CN
Status:
complete
Fee:
$1,772
Permit Type:
Add/alt
Building Type:
Single family/duplex
E22-29128 heller remodel/addition construct alterations and additions to single-family residence per plan
Valuation:
N/A
Permit #:
BSF2022-31528
Status:
plancheck
Fee:
$5,997
Permit Type:
N/A
Building Type:
N/A
Construction of one-story single family residence (3 bdrm) with attached garage and covered porches
Valuation:
$306,303
Permit #:
DWEL17-0177
Status:
Intake Processing
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Project name: michael & kalai lau wineland 6510 112th av se (lt 156 hillmans lk) haul route for clear & grade, construct new sfr, installation of driveway, and storm drain connection. with future revisions to the right of way use permit, additional activities in the public right of way will be permitted. row fees = $179.00. see special conditions & attachments.
Valuation:
N/A
Permit #:
06-120547 TC
Status:
Closed
Fee:
$365
Permit Type:
N/A
Building Type:
N/A
Connect sanitary sewer for new addition; assoc building permit 6475912. 5/4/16 paf addition (1) sanitary system pump for drainage
Valuation:
N/A
Permit #:
6529200-SS
Status:
complete
Fee:
$450
Permit Type:
N/A
Building Type:
Single family/duplex
Loken Construction Co Reviews
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Verified License
BuildZoom confirmed this contractor's license
Loken Construction Co License info
License Not Verified
| License # | LOKENCC993J6 |
| 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 March, 2026. Check the current license status of Loken Construction Co with the The City of Tukwila, WA
This is a sample of licensing data; click here to access a complete history.
Verified License
| License # | LOKENCC993J6 |
| Status | Active |
| State | Washington |
| Type | Construction Contractor, Construction Contractor |
| Business Type | Corporation |
- BuildZoom verified this license was active as of April 2026.
Verify this license's status for Loken Construction Co 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 # | LSQUAII947R1 |
| 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.
Check this license's status for Loken Construction Co at the Washington State Department of Labor & Industries.
This is a sample of licensing data; click here to access a complete history.
110
BuildZoom Score
Insured
| Insurer | Nevada Capital Ins Co |
| Insured up to | $1,000,000 |
Bonded
| Bonded Agent | CBIC |
| Bond Value | $12,000 |
39
Permits
- Building permit records show that Loken Construction Co has worked on 39 permitted projects.
Loken Construction Co Employees
LC
Loken, Jay C
President