Updated: Nov 25, 2025
Location and Projects
Address
Caledonia, MI, 49316
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K&s plumbing Co, Inc
K&s plumbing Co, Inc, Caledonia, MI (Owned by: Brian Koster) holds a Plumbing license and 6 other licenses according to the Michigan license board.
Their BuildZoom score of 103 ranks in the top 10% of 167,179 Michigan licensed contractors.
Their license was verified as active when we last checked. If you are thinking of hiring K&s plumbing Co, Inc, we recommend double-checking their license status with the license board and using our project planner to get competitive quotes.
K&s plumbing Co, Inc Services
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K&s plumbing Co, Inc Contact Information
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This is a sample of this contractor's permits. Click here to access their complete permit history.
4130 del-mar dr sw suite b. new tenant buildout. one rr one mop sink & water heater. one coffee break area
Valuation:
N/A
Permit #:
PP25-0017
Status:
issued
Fee:
$181
Permit Type:
plumbing
Building Type:
N/A
Veldhouse - remove all plumbing - addition restroom and kitchen pb 43474
Valuation:
N/A
Permit #:
PP2400476
Status:
issued
Fee:
$270
Permit Type:
plumbing
Building Type:
N/A
Adding floor sinks and trench drain - kitchen eq. plumbing connection
Valuation:
N/A
Permit #:
PP23-0619
Status:
final
Fee:
$191
Permit Type:
plumbing
Building Type:
N/A
New tenant buildout in existing building
Valuation:
N/A
Permit #:
P25P0075
Status:
issued
Fee:
$161
Permit Type:
plumbing
Building Type:
N/A
Gas piping to four rtu's pb 43655
Valuation:
N/A
Permit #:
PM2500389
Status:
final
Fee:
$160
Permit Type:
Gas piping
Building Type:
N/A
Gas piping to 3 new rtu's at addition
Valuation:
N/A
Permit #:
PM25-0003
Status:
issued
Fee:
$130
Permit Type:
Mechanical
Building Type:
N/A
Dollar tree renovation pb 43655
Valuation:
N/A
Permit #:
PP2500209
Status:
final
Fee:
$217
Permit Type:
plumbing
Building Type:
N/A
Replace fixtures in existing gang baths. addition unisex rr and breakroom
Valuation:
N/A
Permit #:
PP25-0405
Status:
final
Fee:
$235
Permit Type:
plumbing
Building Type:
N/A
Bldg.3 global express (delta distributing) suites 100-106. new tenant build-out in sw corner of spec. building. 3
Valuation:
N/A
Permit #:
P22P0131
Status:
final
Fee:
$246
Permit Type:
plumbing
Building Type:
N/A
Reroute domestic hot and cold water piping in 2-3 locations pb 43930
Valuation:
N/A
Permit #:
PP2500338
Status:
final
Fee:
$107
Permit Type:
plumbing
Building Type:
N/A
Replace water heater
Valuation:
N/A
Permit #:
P25P0002
Status:
final
Fee:
N/A
Permit Type:
plumbing
Building Type:
N/A
Cherry capital foods: adding a cooler with trench drain 3-comp handsink water heater
Valuation:
N/A
Permit #:
P23P0166
Status:
final
Fee:
$138
Permit Type:
plumbing
Building Type:
N/A
Ug for sanitary only - gang baths breakroom mop sink (future building out is for best buy)
Valuation:
N/A
Permit #:
P22P0110
Status:
final
Fee:
$130
Permit Type:
plumbing
Building Type:
N/A
Replace fixtures and addition a floor sink pb 41471
Valuation:
N/A
Permit #:
PP2100582
Status:
final
Fee:
$215
Permit Type:
plumbing
Building Type:
N/A
Big o's smokehouse replace (3) floor drains replace (1) trench drain with (1) fd and (1) shorter td
Valuation:
N/A
Permit #:
P23P0044
Status:
final
Fee:
$85
Permit Type:
plumbing
Building Type:
N/A
Boyd ti: new tenant build-out @ west end of 5303 68th street shell building
Valuation:
N/A
Permit #:
P23P0076
Status:
final
Fee:
$171
Permit Type:
plumbing
Building Type:
N/A
Addition drain h&c water lines with backflow prevention for a new fish tank
Valuation:
N/A
Permit #:
PP24-0180
Status:
final
Fee:
$121
Permit Type:
plumbing
Building Type:
N/A
Stub water and sanitary into new lease space. amazon srs - pb 41648
Valuation:
N/A
Permit #:
PP2200088
Status:
issued
Fee:
$115
Permit Type:
plumbing
Building Type:
N/A
Install 1 double check valve at fire protection
Valuation:
N/A
Permit #:
PP25-0526
Status:
issued
Fee:
$55
Permit Type:
plumbing
Building Type:
N/A
Gas piping for veterinary er remodel pb 43808
Valuation:
N/A
Permit #:
PM2500801
Status:
issued
Fee:
$145
Permit Type:
Mechanical
Building Type:
N/A
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Verified License
BuildZoom confirmed this contractor's license
K&s plumbing Co, Inc License info
Verified License
| License # | 8112451 |
| Status | Active |
| State | Michigan |
| Type | Plumbing |
- BuildZoom verified this license was active as of November 2025.
Verify this license's status for K&s plumbing Co, Inc at the Michigan Department of Licensing & Regulatory Affairs.
This is a sample of licensing data; click here to access a complete history.
Verified License
| License # | 8112451 |
| Status | Active |
| State | Michigan |
| Type | Plumbing |
- BuildZoom has not verified this license since April, 2024.
Verify this license's status for K&s plumbing Co, Inc at the Michigan Department of Licensing & Regulatory Affairs.
This is a sample of licensing data; click here to access a complete history.
Verified License
| License # | 8004556 |
| Status | Active |
| State | Michigan |
| Type | Plumbing Contractor |
- BuildZoom has not verified this license since April, 2024.
Verify this license's status for K&s plumbing Co, 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 # | 7104531 |
| Status | Inactive |
| State | Michigan |
| Type | Mechanical 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 K&s plumbing Co, 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 # | 8003876 |
| Status | Inactive |
| State | Michigan |
| Type | Plumbing 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 K&s plumbing Co, 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 # | 7104531 |
| Status | Inactive |
| State | Michigan |
| Type | Mechanical 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 K&s plumbing Co, 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 # | 8003876 |
| Status | Inactive |
| State | Michigan |
| Type | Plumbing 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 K&s plumbing Co, Inc at the Michigan Department of Licensing & Regulatory Affairs.
This is a sample of licensing data; click here to access a complete history.
103
BuildZoom Score
219
Permits
- Building permit records show that K&s plumbing Co, Inc has worked on 219 permitted projects.
K&s plumbing Co, Inc Employees
BK
Brian Koster
Owner
BK
Brian A Koster
RK
Robert Koster
Owner
RK
Robert W Koster