Updated: Jun 16, 2026
Location and Projects
Address
21320 Coolidge Hwy., Linden, MI, 48451
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Retro-tech Systems Electrician
Retro-tech Systems Inc, 21320 Coolidge Hwy, Linden, MI (Owned by: Retro Tech Systems Inc) holds a Electrical Contractor license and 7 other licenses according to the Michigan license board.
Their BuildZoom score of 102 ranks in the top 11% of 167,179 Michigan licensed contractors.
Their license was verified as active when we last checked. If you are thinking of hiring Retro-tech Systems Inc, we recommend double-checking their license status with the license board and using our bidding system to get competitive quotes.
Retro-tech Systems Inc Contact Information
Phone Number: (248) 547-9600
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Address: 21320 Coolidge Hwy., Linden, MI 48451
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Building Permits by Retro-tech Systems Inc
This is a sample of this contractor's permits. Click here to access their complete permit history.
We will be upgrading 7 fixtures to energy efficient lights in the salt barn/maintenance shed
Valuation:
N/A
Permit #:
PE25-141
Status:
final
Fee:
$156
Permit Type:
Electrical
Building Type:
N/A
We will be upgrading 54 luminaires to energy efficient lighting
Valuation:
N/A
Permit #:
PE25-135
Status:
final
Fee:
$168
Permit Type:
Electrical
Building Type:
N/A
We will be upgrading 56 luminaires to energy efficient led lights
Valuation:
N/A
Permit #:
PE25-133
Status:
final
Fee:
$168
Permit Type:
Electrical
Building Type:
N/A
We will be upgrading 11 luminaires to energy efficient lighting
Valuation:
N/A
Permit #:
PE25-130
Status:
final
Fee:
$156
Permit Type:
Electrical
Building Type:
N/A
We will be upgrading 1 072 luminaires to energy efficient lighting
Valuation:
N/A
Permit #:
PE25-131
Status:
final
Fee:
$408
Permit Type:
Electrical
Building Type:
N/A
We will be upgrading 669 luminaires to energy efficient lighting
Valuation:
N/A
Permit #:
PE25-132
Status:
final
Fee:
$312
Permit Type:
Electrical
Building Type:
N/A
We will be upgrading 250 luminaires to energy efficient lighting
Valuation:
N/A
Permit #:
PE25-134
Status:
final
Fee:
$210
Permit Type:
Electrical
Building Type:
N/A
Installation of 34 retrofit lighting
Valuation:
N/A
Permit #:
PE23-034
Status:
issued
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Final inspection (3) retro fit lighting fixtures this is a one for one fixture replacement of existing luminaries
Valuation:
N/A
Permit #:
PE16-00317
Status:
final
Fee:
$256
Permit Type:
Electrical
Building Type:
N/A
Final inspection (2) retro fit lighting fixtures this is a one for one fixture replacement of existing luminaries
Valuation:
N/A
Permit #:
PE16-00316
Status:
final
Fee:
$152
Permit Type:
Electrical
Building Type:
N/A
Lighting upgrades: 50 fixtures and final devices. branch circuits installed by banton electric permit pe150284
Valuation:
N/A
Permit #:
PE150322
Status:
final
Fee:
$405
Permit Type:
Electrical
Building Type:
N/A
Lighting upgrades: 50 fixtures at the youth center; 25 fixtures at grace academic center
Valuation:
N/A
Permit #:
PE150319
Status:
complete
Fee:
$190
Permit Type:
Electrical
Building Type:
N/A
Light fix - retro-fit energy lighting - 219
Valuation:
N/A
Permit #:
PE15-0305
Status:
final
Fee:
N/A
Permit Type:
Electrical permit
Building Type:
N/A
Lighting upgrades: 25 fixtures
Valuation:
N/A
Permit #:
PE150325
Status:
final
Fee:
$375
Permit Type:
Electrical
Building Type:
N/A
Lighting upgrades: 50 fixtures
Valuation:
N/A
Permit #:
PE150324
Status:
final
Fee:
$405
Permit Type:
Electrical
Building Type:
N/A
Lighting upgrades: 25 fixtures
Valuation:
N/A
Permit #:
PE150323
Status:
final
Fee:
$375
Permit Type:
Electrical
Building Type:
N/A
Lighting upgrades: 25 fixtures
Valuation:
N/A
Permit #:
PE150321
Status:
final
Fee:
$375
Permit Type:
Electrical
Building Type:
N/A
Lighting upgrades -- 25 fixtures
Valuation:
N/A
Permit #:
PE150320
Status:
final
Fee:
$375
Permit Type:
Electrical
Building Type:
N/A
(2526 2528 2530 2532 2534 2536 2538 2540 2542 la roy froh townhomes) 2 light fix
Valuation:
N/A
Permit #:
PE14-0574
Status:
final
Fee:
N/A
Permit Type:
Electrical permit
Building Type:
N/A
2328 2330 2332 2334 2336 2338 2340 2342 2344 la roy froh townhomes) 2 light fix
Valuation:
N/A
Permit #:
PE14-0563
Status:
final
Fee:
N/A
Permit Type:
Electrical permit
Building Type:
N/A
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Verified License
BuildZoom confirmed this contractor's license
Retro-tech Systems Inc License info
Verified License
| License # | 6115372 |
| Status | Active |
| State | Michigan |
| Type | Electrical Contractor |
- BuildZoom verified this license was active as of June 2026.
Verify this license's status for Retro-tech Systems Inc at the Michigan Department of Licensing & Regulatory Affairs.
This is a sample of licensing data; click here to access a complete history.
License Not Verified
| License # | CONT-3938 |
| Status | Active |
| City | Ann Arbor |
| Type | Contractor |
- When BuildZoom last verified this license, it had an expiration date of December, 2025. Check the current license status of Retro-tech Systems Inc with the The City of Ann Arbor, MI
This is a sample of licensing data; click here to access a complete history.
Verified License
| License # | 6109844 |
| Status | Active |
| State | Michigan |
| Type | Electrical Contractor |
- BuildZoom has not verified this license since January, 2025.
Verify this license's status for Retro-tech Systems Inc at the Michigan Department of Licensing & Regulatory Affairs.
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | 6109844 |
| Status | Inactive |
| State | Michigan |
| Type | Electrical Contractor |
- According to the Michigan Department of Licensing & Regulatory Affairs, 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 Retro-tech Systems Inc at the Michigan Department of Licensing & Regulatory Affairs.
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | 4100286 |
| Status | Inactive |
| State | Michigan |
| Type | Electrical Reciprocal Registration |
- According to the Michigan Department of Licensing & Regulatory Affairs, 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 Retro-tech Systems Inc at the Michigan Department of Licensing & Regulatory Affairs.
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | 4100286 |
| Status | Inactive |
| State | Michigan |
| Type | Electrical Reciprocal Registration |
- According to the Michigan Department of Licensing & Regulatory Affairs, 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 Retro-tech Systems Inc at the Michigan Department of Licensing & Regulatory Affairs.
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | LIC-6815 |
| Status | Inactive |
| City | Ann Arbor |
| Type | Contractor |
- According to the The City of Ann Arbor, MI, 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 Retro-tech Systems Inc at the The City of Ann Arbor, MI.
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | LIC-6797 |
| Status | Inactive |
| City | Ann Arbor |
| Type | Contractor |
- According to the The City of Ann Arbor, MI, 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 Retro-tech Systems Inc at the The City of Ann Arbor, MI.
This is a sample of licensing data; click here to access a complete history.
102
BuildZoom Score
200
Permits
- Building permit records show that Retro-tech Systems Inc has worked on 200 permitted projects.
Retro-tech Systems Inc Employees
GM
Gary Maynard
Owner
GM
Gary Maynard
KR
Kent D Rilett
RI
Retro Tech Systems Inc
Owner
RK
Rilett Kent
Owner