Updated: Mar 27, 2026
Location and Projects
Address
9675 Se 36th Street Ste 110, Mercer Island, WA, 98040
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Semaphore Corporation Electrician
Their BuildZoom score of 0 does not rank in the top 50% of Washington contractors.
If you are thinking of hiring Semaphore Corporation, we recommend double-checking their license status with the license board and using our project planner to get competitive quotes.
Semaphore Corporation Contact Information
Phone Number: (206) 905-5000
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Address: 9675 Se 36th Street Ste 110, Mercer Island, WA 98040
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Semaphore Corporation Mercer Island
Quality
Alert*
Pro tip:
We generally recommend hiring a contractor with a score higher than 95.
*No active license on file. If you are Semaphore Corporation, click “This is My Business” to update your information.
Activity
|
1 project
|
2024 |
Our building permit records indicate that Semaphore Corporation has worked on at least
1.0 project over the past 2 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
|
$20k-$50k |
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 Semaphore Corporation
This is a sample of this contractor's permits. Click here to access their complete permit history.
Type: electrical low voltage only class: alteration to structure or system plaza at yarrow bay (unit 310): (50) data cable system & (50) telecommunication system
Valuation:
N/A
Permit #:
ELV20-00505
Status:
plancheck
Fee:
$107
Permit Type:
N/A
Building Type:
N/A
A (nonresidential alteration) project installing (data cable system). additional info (). work site location ()
Valuation:
$11,000
Permit #:
E19005313
Status:
complete
Fee:
$227
Permit Type:
N/A
Building Type:
N/A
Type: electrical low voltage only class: alteration to structure or system, , mckinley irvin (suite 330): (50) data cable system & (50) telecommunication systems
Valuation:
N/A
Permit #:
ELV20-00638
Status:
final
Fee:
$107
Permit Type:
N/A
Building Type:
N/A
A (nonresidential alteration) project installing (data cable system). additional info (). work site location ()
Valuation:
N/A
Permit #:
E19005313
Status:
issued
Fee:
$227
Permit Type:
N/A
Building Type:
N/A
Installation of ethernet data cabling
Valuation:
$20,667
Permit #:
7025037-EL
Status:
complete
Fee:
$166
Permit Type:
Remodel or repair
Building Type:
Commercial
A nonresidential alteration to existing structure low voltage only project involving (1 telecommunications system)
Valuation:
N/A
Permit #:
19 105502 BF
Status:
final
Fee:
$117
Permit Type:
N/A
Building Type:
N/A
New office project installing low voltage data cabling for new tenant space
Valuation:
$90,351
Permit #:
6672764-EL
Status:
complete
Fee:
$669
Permit Type:
Remodel or repair
Building Type:
Commercial
Install 41 data cables
Valuation:
$9,030
Permit #:
E20000782
Status:
complete
Fee:
$208
Permit Type:
N/A
Building Type:
N/A
Installation of 40 data drops
Valuation:
N/A
Permit #:
6656990-EL
Status:
complete
Fee:
$159
Permit Type:
N/A
Building Type:
Commercial
No Description Available
Valuation:
N/A
Permit #:
19-2344
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
Commercial
Install quantity 9 of a wireless access point. install access control card reader on 1 door. install quantity 1 ip security camera
Valuation:
N/A
Permit #:
6369056-EL
Status:
complete
Fee:
$92
Permit Type:
N/A
Building Type:
Commercial
Install new data cabling and audio visual system
Valuation:
N/A
Permit #:
6545623-EL
Status:
complete
Fee:
$180
Permit Type:
N/A
Building Type:
Commercial
Installing 4 wireless access points 24 new data drops and demarc extension
Valuation:
N/A
Permit #:
6462041-EL
Status:
complete
Fee:
$119
Permit Type:
N/A
Building Type:
Commercial
Installing audio visual system in 7 classrooms
Valuation:
N/A
Permit #:
6605021-EL
Status:
complete
Fee:
$246
Permit Type:
N/A
Building Type:
Commercial
Install 180 cat5e cables for data and phone. install card key reader system for 5 doors
Valuation:
N/A
Permit #:
6418400-EL
Status:
complete
Fee:
$462
Permit Type:
N/A
Building Type:
Commercial
Installing data cabling
Valuation:
N/A
Permit #:
6500955-EL
Status:
complete
Fee:
$290
Permit Type:
N/A
Building Type:
Commercial
Install low voltage data communications
Valuation:
N/A
Permit #:
6522151-EL
Status:
complete
Fee:
$397
Permit Type:
N/A
Building Type:
Commercial
Argosy installing 40 data drops
Valuation:
$23,480
Permit #:
6681832-EL
Status:
complete
Fee:
$172
Permit Type:
Remodel or repair
Building Type:
Commercial
Access control
Valuation:
N/A
Permit #:
6536143-EL
Status:
complete
Fee:
$83
Permit Type:
N/A
Building Type:
Commercial
Install data and phone cabling for new office
Valuation:
N/A
Permit #:
11 121039 BF
Status:
final
Fee:
$69
Permit Type:
N/A
Building Type:
N/A
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Semaphore Corporation Reviews
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Semaphore Corporation License info
License Not Verified
| License # | SEMAPC 934QW |
| Status | Active |
| State | Washington |
| Type | Electrical Contractor, Telecommunications |
| Business Type | Corporation |
- When BuildZoom last verified this license, it had an expiration date of January, 2018. Check the current license status of Semaphore Corporation with the Washington State Department of Labor & Industries
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | SEMAPC*934QW |
| Status | Inactive |
| City | Tukwila |
| Type | Electrical Contractor |
| Class | Corporation |
| Business Type | Corporation |
- 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 Semaphore Corporation at the The City of Tukwila, WA.
This is a sample of licensing data; click here to access a complete history.
ALERT*
BuildZoom Score
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- *No active license on file. If you are Semaphore Corporation, click “This is My Business” to update your information.
Insured
| Insurer | Hartford Casualty Ins Co |
| Insured up to | $1,000,000 |
24
Permits
- Building permit records show that Semaphore Corporation has worked on 24 permitted projects.
Semaphore Corporation Employees
BG
BROWN, GARTH
President
SR
SIMPERMAN, ROY
Agent