Updated: May 21, 2026
Location and Projects
Headquarters Address
39 MARILYN MAE DRIVE, Sparks, NV, 89441
Local address
P O BOX 289, San Carlos, CA, 94070
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MJ Mechanical Services Inc
MJ Mechanical Services Inc, San, Po Box 289, San Carlos, CA (Employees: Janet Marie Hargadon, Mark Ronald Hargadon, and Mike Anthony Jenkins) holds a Warm Air Heating, Ventilating And Air Conditioning license and 3 other licenses according to the California license board.
Their BuildZoom score of 99 ranks in the top 15% of 336,931 California licensed contractors.
Their license was verified as active when we last checked. If you are thinking of hiring MJ Mechanical Services Inc, we recommend double-checking their license status with the license board and using our project planner to get competitive quotes.
MJ Mechanical Services Inc Contact Information
Phone Number: (775) 225-1160
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Headquarters Address: 39 MARILYN MAE DRIVE, Sparks, NV, 89441
Local Address: P O BOX 289, San Carlos, CA 94070
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MJ Mechanical Services Inc San Carlos
Quality
99
85th percentile
Pro tip:
We generally recommend hiring a contractor with a score higher than 95.
MJ Mechanical Services Inc has a BuildZoom score of 99, which places them above 85% of 336,931 contractors in California.
Activity
|
1 project
|
2023 |
Our building permit records indicate that MJ Mechanical Services Inc has worked on at least
1.0 project over the past 3 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
|
$100k-$250k |
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 MJ Mechanical Services Inc
This is a sample of this contractor's permits. Click here to access their complete permit history.
Replace 30 ton cooling only rooftop air conditioning unit with like capacity unit. revision- replace all rooftop units
Valuation:
$100,000
Permit #:
M22-093
Status:
triage
Fee:
$449
Permit Type:
N/A
Building Type:
Dwellings
Replacement of (2) 27.5 ton rooftop cooling only air conditioning units like for like capacity
Valuation:
$240,000
Permit #:
PRE23-01419
Status:
canceled
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Replace rooftop package air conditioning unit screened in 4 sides
Valuation:
$75,000
Permit #:
B21-1381
Status:
final
Fee:
$3,587
Permit Type:
Tenant improvement
Building Type:
N/A
Suite 1: install racks in cold rooms. ref bpa 202012231586
Valuation:
$5,000
Permit #:
202108267230
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
20 - warehouse, n...
Replace (e) dry clean machine located in parking level one of fairmont hotel laundry room. including structural anchorage plumbing and electrical connections
Valuation:
$56,000
Permit #:
2013 104162 CI
Status:
final
Fee:
N/A
Permit Type:
Hotel/motel
Building Type:
N/A
Replace 30 ton cooling only rooftop air conditioning unit with like capacity unit
Valuation:
$100,000
Permit #:
PRE22-00841
Status:
filed
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Scope of wk: r/r 8500 lb roof top (50 tons cooling capacity) trane air conditioning unit like-for-like
Valuation:
$62,000
Permit #:
2019 103527 CI
Status:
final
Fee:
N/A
Permit Type:
Medical/dental cl...
Building Type:
N/A
#1- installation of prefabricated walk in cooler including refrigeration system installation including plumbing & electrical
Valuation:
$20,000
Permit #:
201311051139
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
20 - warehouse, n...
Crn2016-00074. install 1 ductless mini split system air conditioning unit
Valuation:
$7,000
Permit #:
BLD2016-42994
Status:
final
Fee:
$785
Permit Type:
N/A
Building Type:
N/A
Mechanical alter com: remove and replace 2 existing ductless split system air conditioning units to commercial building
Valuation:
$8,500
Permit #:
BLD2017-48633
Status:
final
Fee:
$535
Permit Type:
N/A
Building Type:
N/A
Install 1 ductless mini split system air conditioning unit
Valuation:
$7,000
Permit #:
BLD2016-43026
Status:
final
Fee:
$478
Permit Type:
N/A
Building Type:
N/A
Replacement of forced air furance repair and replace ducts ref pw20160607036
Valuation:
N/A
Permit #:
PM20160824357
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Replacement of forced air furance repair and replace ducts ref pw20160607036
Valuation:
$0
Permit #:
PM20160824357
Status:
ISSUED
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Tenant improvement. del monte fresh produce install 2 new ripening rooms
Valuation:
$26,500
Permit #:
B16-02489
Status:
final
Fee:
$1,565
Permit Type:
Tenant-imp
Building Type:
N/A
Tenant improvement. del monte fresh produce install 2 new ripening rooms
Valuation:
N/A
Permit #:
BP16-01298
Status:
final
Fee:
$1,366
Permit Type:
Tenant improvement
Building Type:
N/A
Scope of wk: r/r 8500 lb roof top air conditioning unit like-for-like calcs
Valuation:
N/A
Permit #:
2019 101674 CI
Status:
applied
Fee:
N/A
Permit Type:
Medical/dental cl...
Building Type:
N/A
Bldg- remove and replace 7 roof top units (htl)
Valuation:
N/A
Permit #:
BLD2013-01838
Status:
final
Fee:
$1,690
Permit Type:
N/A
Building Type:
N/A
Replace (e) 7 roof-top air conditioners air conditioning #1+ 2 = 10.6 seer air conditioning #3 + 4= 11.2 seer air conditioning #5 + 6 + 7 = 13 seer
Valuation:
$65,000
Permit #:
BP10000076
Status:
final
Fee:
$2,039
Permit Type:
N/A
Building Type:
N/A
Replace 120v fire damper actucator
Valuation:
$400
Permit #:
B14-0936
Status:
issued
Fee:
$83
Permit Type:
Mechanical
Building Type:
N/A
Installation of condensate drains for refridgeated coolers. ok air conditioning
Valuation:
N/A
Permit #:
PP20131219867
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
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Verified License
BuildZoom confirmed this contractor's license
MJ Mechanical Services Inc License info
Verified License
| License # | 853653 |
| Status | Active |
| State | California |
| Type | Warm Air Heating, Ventilating And Air Conditioning |
| Business Type | Corporation |
- BuildZoom verified this license was active as of May 2026.
Verify this license's status for MJ Mechanical Services Inc at the California Contractors State License Board.
This is a sample of licensing data; click here to access a complete history.
License Not Verified
| License # | 6505925634 |
| Status | Active |
| City | Richmond |
| Type | Contractor |
| Business Type | Corporation |
- When BuildZoom last verified this license, it had an expiration date of October, 2017. Check the current license status of MJ Mechanical Services Inc with the The City of Richmond, CA
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | 870211 |
| Status | Inactive |
| State | California |
| Type | Plumbing |
| Business Type | Corporation |
- According to the California Contractors State License Board, 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 MJ Mechanical Services Inc at the California Contractors State License Board.
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | 770841 |
| Status | Inactive |
| State | California |
| Type | Warm Air Heating, Ventilating And Air Conditioning |
| Business Type | Corporation |
- According to the California Contractors State License Board, 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 MJ Mechanical Services Inc at the California Contractors State License Board.
This is a sample of licensing data; click here to access a complete history.
99
BuildZoom Score
Bonded
| Bonded Agent | Developers Surety & Indemnity Company |
| Bond Value | $15,000 |
Insured
| Workers Comp Provider | Hartford Accident & Indemnity Company |
37
Permits
- Building permit records show that MJ Mechanical Services Inc has worked on 37 permitted projects.
MJ Mechanical Services Inc Employees
JH
Janet Marie Hargadon
Officer
MH
Mark Ronald Hargadon
Rmo
MJ
Mike Anthony Jenkins
Sole Owner