Updated: May 12, 2026
Location and Projects
Address
Otsego, MI, 49078
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Mainline Fire Sprinkler Construction
Serving Otsego, Michigan and surrounding areas, Mainline Fire Sprinkler specializes in the installation and servicing of fire sprinkler systems for residential, commercial, and industrial properties. With over three decades of experience, the company brings expertise to new construction projects as well as retrofits and upgrades of existing fire suppression systems. Mainline Fire Sprinkler emphasizes code-compliant system design and utilizes industry-standard materials and installation methods to meet both local and national fire protection requirements. The company has a track record of completing projects ranging from single-family homes to larger commercial facilities, and works with property owners, developers, and general contractors seeking reliable fire safety solutions. Now in its 32nd year, Mainline Fire Sprinkler continues to support the Otsego community with comprehensive fire protection services.
Mainline Fire Sprinkler Services
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Building Permits by Mainline Fire Sprinkler
This is a sample of this contractor's permits. Click here to access their complete permit history.
Additional inspection final inspection 87 fire suppression/protection *********************************amended 3.5.20******************************** added additional 283 heads
Valuation:
N/A
Permit #:
PM19-00738
Status:
final
Fee:
$469
Permit Type:
Mechanical
Building Type:
N/A
Leslie's swimming pool supply (suite h) - tenant buildout
Valuation:
N/A
Permit #:
PMECH21-0764
Status:
final
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Installing fire suppression system for entire rison area
Valuation:
N/A
Permit #:
PM19-06-141
Status:
issued
Fee:
$141,400
Permit Type:
Mechanical
Building Type:
N/A
Office building out inside existing building 10, 000 sf
Valuation:
N/A
Permit #:
PMECH20-0611
Status:
final
Fee:
$70
Permit Type:
Mechanical only
Building Type:
N/A
Additional inspection - 1 final inspection - 1 fire suppression/protection - 125 conf# bcmtax00005269
Valuation:
N/A
Permit #:
PM18-00734
Status:
final
Fee:
$244
Permit Type:
Mechanical
Building Type:
N/A
Relocate sprinkler heads
Valuation:
N/A
Permit #:
PM24-0129
Status:
final
Fee:
$338
Permit Type:
Fire suppression
Building Type:
N/A
Install 95 sprinkler heads
Valuation:
N/A
Permit #:
PM210537
Status:
applied
Fee:
$525
Permit Type:
Fire suppression
Building Type:
N/A
No Description Available
Valuation:
N/A
Permit #:
PM22-1933
Status:
approved
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Relocating fire sprinkler heads to new ceiling layout using existing piping
Valuation:
N/A
Permit #:
PM18-07-112
Status:
final
Fee:
$13,400
Permit Type:
Mechanical
Building Type:
N/A
343 fire sprinklers
Valuation:
N/A
Permit #:
PM18-0071
Status:
final
Fee:
$491
Permit Type:
Mechanical
Building Type:
N/A
Complete fire suppression system 269-692-2300
Valuation:
N/A
Permit #:
PMECH16-0196
Status:
final
Fee:
$65
Permit Type:
Mechanical only
Building Type:
N/A
Interior remodel 7, 700 sf chow hound
Valuation:
N/A
Permit #:
PMECH17-0276
Status:
final
Fee:
$70
Permit Type:
Mechanical only
Building Type:
N/A
Canopy heads (4)
Valuation:
N/A
Permit #:
PMECH18-0315
Status:
final
Fee:
$65
Permit Type:
Mechanical only
Building Type:
N/A
Installing fire suppression system
Valuation:
N/A
Permit #:
PM18-07-235
Status:
issued
Fee:
$78,500
Permit Type:
Mechanical
Building Type:
N/A
Milan laser hair removal interior remodel
Valuation:
N/A
Permit #:
PMECH17-0288
Status:
final
Fee:
$133
Permit Type:
Mechanical only
Building Type:
N/A
Sprinkler system additional deck heads
Valuation:
N/A
Permit #:
PMECH16-0707
Status:
final
Fee:
$65
Permit Type:
Mechanical only
Building Type:
N/A
Interior remodel scrubs & beyond
Valuation:
N/A
Permit #:
PMECH16-0287
Status:
final
Fee:
$65
Permit Type:
Mechanical only
Building Type:
N/A
Suppression system in new addition
Valuation:
N/A
Permit #:
PM22-010
Status:
issued
Fee:
$264
Permit Type:
N/A
Building Type:
N/A
Fire suppression (92)
Valuation:
N/A
Permit #:
PM16-00949
Status:
final
Fee:
$119
Permit Type:
Mechanical
Building Type:
N/A
New 5, 212 sf office building
Valuation:
N/A
Permit #:
PMECH15-0584
Status:
final
Fee:
$65
Permit Type:
Mechanical only
Building Type:
N/A
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Mainline Fire Sprinkler License info
Verified License
| License # | 7107967 |
| Status | Active |
| State | Michigan |
| Type | Mechanical Contractor |
- BuildZoom verified this license was active as of May 2026.
Verify this license's status for Mainline Fire Sprinkler 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 # | 7107967 |
| Status | Active |
| State | Michigan |
| Type | Mechanical Contractor |
- When BuildZoom last verified this license, it had an expiration date of August, 2025. Check the current license status of Mainline Fire Sprinkler with the Michigan Department of Licensing & Regulatory Affairs
This is a sample of licensing data; click here to access a complete history.
License Not Required
| Status | Not Required |
- BuildZoom verified in October, 2019 that this contractor does not need a license to be a contractor in Michigan.
This is a sample of licensing data; click here to access a complete history.
98
BuildZoom Score
56
Permits
- Building permit records show that Mainline Fire Sprinkler has worked on 56 permitted projects.
Mainline Fire Sprinkler Employees
MP
Michael Perkowski
Owner
MP
Michael Perkowski