Updated: Apr 08, 2026
Location and Projects
Address
Ada, MI, 49301
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Diversified Mechanical Services, Inc
Diversified Mechanical Services, Inc, Ada, MI (Owned by: Timothy Ohara) holds a Mechanical Contractor license and 5 other licenses according to the Michigan license board.
Their BuildZoom score of 93 ranks in the top 27% of 167,179 Michigan licensed contractors.
Their license was verified as active when we last checked. If you are thinking of hiring Diversified Mechanical Services, Inc, we recommend double-checking their license status with the license board and using our bidding system to get competitive quotes.
Diversified Mechanical Services, Inc Services
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Diversified Mechanical Services, Inc Contact Information
Phone Number: (616) 785-2735
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Building Permits by Diversified Mechanical Services, Inc
This is a sample of this contractor's permits. Click here to access their complete permit history.
Install chilled water piping and low pressure steam piping and boiler
Valuation:
N/A
Permit #:
PM2024-0040
Status:
final
Fee:
$596
Permit Type:
Mechanical
Building Type:
N/A
Install air conditioning system including ductsextended mechanical permit andy**5/16/18-amended permit to include new boiler infloor tubing gas piping and indirect water heater****7/26/18-amended permit to include solid fuel gas piping 2 addt'l insp**
Valuation:
N/A
Permit #:
PM 2017-0750
Status:
complete
Fee:
$520
Permit Type:
Mechanical
Building Type:
N/A
Alteration to exisitn biodiesel equipment and additon of corn oil processing equipment to produce refine and filter corn oil based biodiesel
Valuation:
N/A
Permit #:
PM13-191
Status:
final
Fee:
$504
Permit Type:
Mechanical
Building Type:
N/A
Replace furnace & air conditioning
Valuation:
N/A
Permit #:
P16-0077M
Status:
final
Fee:
$145
Permit Type:
Mechanical
Building Type:
N/A
Install restrooms
Valuation:
N/A
Permit #:
PP98-0007
Status:
final
Fee:
$45
Permit Type:
plumbing
Building Type:
N/A
No Description Available
Valuation:
N/A
Permit #:
BPV2012-00032
Status:
N/A
Fee:
N/A
Permit Type:
Modification
Building Type:
N/A
No Description Available
Valuation:
N/A
Permit #:
MEC2012-02103
Status:
N/A
Fee:
N/A
Permit Type:
Modification
Building Type:
N/A
Install gas lines pursuant to 2000 ifgc chapter 4
Valuation:
N/A
Permit #:
PME03-0277
Status:
final
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
No Description Available
Valuation:
N/A
Permit #:
BPV2012-00030
Status:
N/A
Fee:
N/A
Permit Type:
Modification
Building Type:
N/A
No Description Available
Valuation:
N/A
Permit #:
MEC2012-01711
Status:
N/A
Fee:
N/A
Permit Type:
Modification
Building Type:
N/A
126 of c.s. filter pipe
Valuation:
N/A
Permit #:
PM08-106
Status:
final
Fee:
$125
Permit Type:
Mechanical
Building Type:
N/A
Replace boiler
Valuation:
N/A
Permit #:
PM 2017-0508
Status:
complete
Fee:
$80
Permit Type:
Mechanical
Building Type:
N/A
No Description Available
Valuation:
N/A
Permit #:
PM06040203
Status:
final
Fee:
$70
Permit Type:
Mechanical
Building Type:
N/A
No Description Available
Valuation:
N/A
Permit #:
PM04000381
Status:
expired
Fee:
$190
Permit Type:
N/A
Building Type:
N/A
Installation of a furnace
Valuation:
N/A
Permit #:
P08-0075M
Status:
final
Fee:
$75
Permit Type:
Mechanical
Building Type:
N/A
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Verified License
BuildZoom confirmed this contractor's license
Diversified Mechanical Services, Inc License info
Verified License
| License # | 7108668 |
| Status | Active |
| State | Michigan |
| Type | Mechanical Contractor |
- BuildZoom verified this license was active as of April 2026.
Verify this license's status for Diversified Mechanical Services, 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 # | 320250 |
| Status | Active |
| State | Michigan |
| Type | Boiler Repairer |
- When BuildZoom last verified this license, it had an expiration date of December, 2025. Check the current license status of Diversified Mechanical Services, Inc with 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 # | 313682 |
| Status | Active |
| State | Michigan |
| Type | Boiler Installer |
- When BuildZoom last verified this license, it had an expiration date of December, 2025. Check the current license status of Diversified Mechanical Services, Inc with the Michigan Department of Licensing & Regulatory Affairs
This is a sample of licensing data; click here to access a complete history.
Verified License
| License # | 7108668 |
| Status | Active |
| State | Michigan |
| Type | Mechanical Contractor |
- BuildZoom has not verified this license since March, 2025.
Verify this license's status for Diversified Mechanical Services, 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 # | 320250 |
| Status | Active |
| State | Michigan |
| Type | Boiler Repairer |
- When BuildZoom last verified this license, it had an expiration date of December, 2025. Check the current license status of Diversified Mechanical Services, Inc with 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 # | 313682 |
| Status | Active |
| State | Michigan |
| Type | Boiler Installer |
- When BuildZoom last verified this license, it had an expiration date of December, 2025. Check the current license status of Diversified Mechanical Services, Inc with the Michigan Department of Licensing & Regulatory Affairs
This is a sample of licensing data; click here to access a complete history.
93
BuildZoom Score
11
Permits
- Building permit records show that Diversified Mechanical Services, Inc has worked on 11 permitted projects.
Diversified Mechanical Services, Inc Employees
TO
Timothy O'hara
Owner
TO
Timothy Ohara
Owner
TO
Timothy Ohara
Owner
TO
Timothy P O'hara
TO
Timothy P Ohara