Updated: Apr 27, 2026
Location and Projects
Address
2104 S 120TH ST, Seattle, WA, 98168
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Ontango Construction Co LLC
Ontango Construction Co LLC at 2104 S 120TH ST, Seattle, WA 98168, held a General Contractor license (#ONTANCC951OA) with the Tukwila contractors license board with an expiration date of 10-03-2023. We last verified the license was inactive on 03-26-2026.
Their BuildZoom score is 0 because we haven’t been able to verify an active license. As a result, they’re not ranked in the top 50% of 128,670 Washington contractors.
If you’re thinking about hiring them, we recommend double-checking their license status with your local licensing authority. Alternatively, use our project planner to be easily matched to qualified, licensed professionals in your area.
Ontango Construction Co LLC Services
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Ontango Construction Co LLC Contact Information
Phone Number: (206) 715-3175
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Address: 2104 S 120TH ST, Seattle, WA 98168
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Building Permits by Ontango Construction Co LLC
This is a sample of this contractor's permits. Click here to access their complete permit history.
702 sf one story addition to east side of existing one story house. includes clearing & grading. does not include plumbing mechanical or electrical
Valuation:
N/A
Permit #:
21 106010 BR
Status:
issued
Fee:
$3,694
Permit Type:
N/A
Building Type:
N/A
A single family residential alteration to existing structure none project involving (1 dryer exhaust duct 1 bathroom fan 1 laundry fan) 17 110924 bu
Valuation:
N/A
Permit #:
17 125774 BK
Status:
final
Fee:
$79
Permit Type:
N/A
Building Type:
N/A
A single family residential alteration to existing structure none project involving (2 dryer exhaust duct 4 bathroom fan 1 laundry fan 1 kitchen fan 1 duct work only) 20 103768 br
Valuation:
N/A
Permit #:
20 113070 BK
Status:
final
Fee:
$262
Permit Type:
N/A
Building Type:
N/A
Project name: fu 2nd story addition build 2 story addition and remodel existing house. does not include clearing & grading, mechanical, plumbing, and electrical.
Valuation:
N/A
Permit #:
14-143665 BR
Status:
Issued
Fee:
$3,930
Permit Type:
N/A
Building Type:
N/A
Project name: 12920 ne 32nd pl a single family residential alteration to existing structure none project involving (1 dryer exhaust duct 1 bathroom fan 1 laundry fan) 17 110924 bu
Valuation:
N/A
Permit #:
17-125774 BK
Status:
Issued
Fee:
$79
Permit Type:
N/A
Building Type:
N/A
Project name: orr addition building plan review for 2 car garage addition.
Valuation:
N/A
Permit #:
16-126086 FJ
Status:
Ready to Issue
Fee:
$178
Permit Type:
N/A
Building Type:
N/A
Addition on to existing dining room kitchen master bedroom and study. does not include plumbing (07-131500ip) mechanical (07-139222im) and electrical (07-132356ie). does not include clearing and grading
Valuation:
N/A
Permit #:
06 119680 BR
Status:
final
Fee:
$1,832
Permit Type:
N/A
Building Type:
N/A
Adding full bathroom to basement area. includes mechanical. does not include electrical (14-135927 bf).**add on plumbing**
Valuation:
N/A
Permit #:
14 130915 BT
Status:
final
Fee:
$420
Permit Type:
N/A
Building Type:
N/A
Establish use as a single family dwelling construct new single family residence with attached garage all per plan
Valuation:
$228,059
Permit #:
6082942
Status:
Permit Closed
Fee:
$4,115
Permit Type:
Single family du...
Building Type:
N/A
Interior renovation and deck replacement. does not include clearing & grading mechanical plumbing or electrical
Valuation:
N/A
Permit #:
20 103768 BR
Status:
final
Fee:
$6,227
Permit Type:
N/A
Building Type:
N/A
Addition room on top of garage and extend family room. does not include clear & grade. **add electrical (wiring for addition). **add on mechanical and plumbing
Valuation:
N/A
Permit #:
04 124075 BR
Status:
final
Fee:
$2,238
Permit Type:
N/A
Building Type:
N/A
Construct addition and alteration together with detached garage expansion to the existing single family residence all per plan
Valuation:
$0
Permit #:
729228
Status:
Finaled Permit
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Demolish a single family residence per plot plan all per subject to field inspection. stfi
Valuation:
$0
Permit #:
6084341
Status:
Permit Issued
Fee:
$237
Permit Type:
Single family du...
Building Type:
N/A
Project name: orr residence review plans for alteration.
Valuation:
N/A
Permit #:
12-128459 FJ
Status:
Closed
Fee:
$156
Permit Type:
N/A
Building Type:
N/A
Side sewer & storm drain - rssc to obtain sep permit for work in row - mdc tbr
Valuation:
N/A
Permit #:
6116488-SS
Status:
complete
Fee:
$837
Permit Type:
New
Building Type:
Single family/duplex
Addition downspouts extended to 4/15/04 per telephone request 1/28/04. alpv 5/11/04 mvc: addition downspouts and sewer connection extend permit per joe b
Valuation:
N/A
Permit #:
6023812-SS
Status:
complete
Fee:
$380
Permit Type:
N/A
Building Type:
Institutional
Sheetrock existing framing install closet doors & can light
Valuation:
N/A
Permit #:
0410-106
Status:
final
Fee:
$436
Permit Type:
N/A
Building Type:
N/A
Wire new home with apartment underneath. two meters
Valuation:
$0
Permit #:
6135479
Status:
Permit Finaled
Fee:
$726
Permit Type:
Single family du...
Building Type:
N/A
Install electrical for sf alteration
Valuation:
N/A
Permit #:
0410-107
Status:
final
Fee:
$109
Permit Type:
N/A
Building Type:
N/A
Temp power - building permit #6082942
Valuation:
N/A
Permit #:
6090725-EL
Status:
complete
Fee:
$123
Permit Type:
N/A
Building Type:
Single family/duplex
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Ontango Construction Co LLC Reviews
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Ontango Construction Co LLC License info
Inactive License
| License # | ONTANCC951OA |
| Status | Inactive |
| City | Tukwila |
| Type | Construction Contractor, General |
| Class | Limited Liability Company |
| Business Type | Limited Liability Company |
- According to the The City of Tukwila, WA, 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 Ontango Construction Co LLC at the The City of Tukwila, WA.
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | ONTANCC951OA |
| Status | Inactive |
| State | Washington |
| Type | Construction Contractor, Construction Contractor |
| Business Type | Limited Liability Company |
- 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 Ontango Construction Co LLC at the Washington State Department of Labor & Industries.
This is a sample of licensing data; click here to access a complete history.
ALERT*
BuildZoom Score
- How the BuildZoom Score works
- *No active license on file. If you are Ontango Construction Co LLC, click “This is My Business” to update your information.
Insured
| Insurer | Security National Insurance |
| Insured up to | $1,000,000 |
Bonded
| Bond Value | $12,000 |
18
Permits
- Building permit records show that Ontango Construction Co LLC has worked on 18 permitted projects.
Ontango Construction Co LLC Employees
LW
Leung, Johnny Wing Wah
Governing Persons
NK
Ng, Andrew Chi King
Governing Persons
NK
Ng, Oliver Ka Kuen
Owner
NK
Ng, Oliver Ka-Kuen
Partner/Member
ON
Oliver Ng
Partner/Member