Updated: Mar 28, 2026
Location and Projects
Address
26752 OAK AVE UNIT #B, Canyon Country, CA, 91351
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MJ Hellmuth Plumbing Inc
MJ Hellmuth Plumbing Inc, 26752 Oak Ave, Canyon Country, CA (Employee: Mark John Hellmuth) holds a Plumbing license according to the California license board.
Their BuildZoom score of 107 ranks in the top 6% of 336,931 California licensed contractors.
Their license was verified as active when we last checked. If you are thinking of hiring MJ Hellmuth Plumbing Inc, we recommend double-checking their license status with the license board and using our bidding system to get competitive quotes.
MJ Hellmuth Plumbing Inc Services
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MJ Hellmuth Plumbing Inc Contact Information
Phone Number: (661) 252-7771
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Address: 26752 OAK AVE UNIT #B, Canyon Country, CA 91351
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MJ Hellmuth Plumbing Inc Canyon Country
Quality
107
94th percentile
Pro tip:
We generally recommend hiring a contractor with a score higher than 95.
MJ Hellmuth Plumbing Inc has a BuildZoom score of 107, which places them above 94% of 336,931 contractors in California.
Activity
|
12 projects
|
2025 |
|
13 projects
|
2024 |
|
8 projects
|
2023 |
Our building permit records indicate that MJ Hellmuth Plumbing Inc has worked on at least
33.0 projects 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.
Experience
|
3 projects
|
Commercial Renovations |
|
28 projects
|
Plumbing projects |
|
3 projects
|
Sewer laterals |
Analyzing permits over the last 4 years shows that MJ Hellmuth Plumbing Inc mostly works on
plumbing project
and sewer lateral
projects.
Pricing
|
1 project
|
$250k-$500k |
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 Hellmuth Plumbing Inc
This is a sample of this contractor's permits. Click here to access their complete permit history.
Potable water waste/vent and rainwater with duplex sump pump system for a core and shell bookstore. connection to (2) existing 1 inch water meters
Valuation:
$392,000
Permit #:
18042-10000-18482
Status:
final
Fee:
N/A
Permit Type:
Commercial
Building Type:
N/A
Revised garage level break room sink to be pumped overhead with indirect drain to a floor sink due to not being able to cut through an existing structural mat slab
Valuation:
N/A
Permit #:
24042-20001-22490
Status:
issued
Fee:
N/A
Permit Type:
Commercial
Building Type:
N/A
Revised garage level break room sink to be pumped overhead with indirect drain to a floor sink due to not being able to cut through an existing structural mat slab
Valuation:
N/A
Permit #:
24042-20001-22490
Status:
issued
Fee:
N/A
Permit Type:
Commercial
Building Type:
N/A
New beauty salon comply with department order effective date 04/30/2018. permit will expire 30 days from issuance date
Valuation:
N/A
Permit #:
23042-20000-09265
Status:
final
Fee:
N/A
Permit Type:
Commercial
Building Type:
N/A
Grading for installation of plumbing grease interceptor bureau of sanitation removal pt p.verma index permit #20014-10000-00633 on 4/9/2020 see comment
Valuation:
$80
Permit #:
20030-10000-02305
Status:
final
Fee:
N/A
Permit Type:
Commercial
Building Type:
N/A
Eplan tenant improvement: conversion of (1) existing men's restroom to new single user restroom with shower to (e) office
Valuation:
N/A
Permit #:
24042-90000-04501
Status:
final
Fee:
N/A
Permit Type:
Commercial
Building Type:
N/A
Installing 1 bathroom and 1 breakroom sink
Valuation:
N/A
Permit #:
25042-90000-11550
Status:
issued
Fee:
N/A
Permit Type:
Commercial
Building Type:
N/A
Cap the sewer main to the building #22
Valuation:
N/A
Permit #:
25042-90000-05278
Status:
final
Fee:
N/A
Permit Type:
Commercial
Building Type:
N/A
Cap off main to building bungalow a
Valuation:
N/A
Permit #:
25042-90000-05279
Status:
final
Fee:
N/A
Permit Type:
Commercial
Building Type:
N/A
Revision to previously approved plans. revise potable water and waste/vent diagram due to relocation of fixtures and addition of (1) new sink. connection to (2) existing 1 inch domestic water meter with (2) 1 1/4 inch backflow preventers
Valuation:
N/A
Permit #:
18042-10003-18482
Status:
final
Fee:
N/A
Permit Type:
Commercial
Building Type:
N/A
Installation of plumbing systems-water with booster pump and existing 3 meter waste & vent and med pressure gas in a retail/market building
Valuation:
$5,337,621
Permit #:
18042-10000-10415
Status:
final
Fee:
N/A
Permit Type:
Commercial
Building Type:
N/A
Mop sink and drinking fountain
Valuation:
N/A
Permit #:
25042-90000-06177
Status:
final
Fee:
N/A
Permit Type:
Commercial
Building Type:
N/A
Install new water heaters (2) lochinvar water heaters 1, 999 btu each) storage tanks (2) 367-gallon and expansion tanks
Valuation:
N/A
Permit #:
22042-90000-26722
Status:
final
Fee:
N/A
Permit Type:
Commercial
Building Type:
N/A
Plumbing tenant improvement. potable water waste/vent with combination waste/vent with existing grease interceptor and medium pressure gas. connection to existing 2 inch domestic water meter with backflow preventer
Valuation:
N/A
Permit #:
19042-10000-18287
Status:
final
Fee:
N/A
Permit Type:
Commercial
Building Type:
N/A
Replaced air compressor
Valuation:
N/A
Permit #:
25045-90000-00392
Status:
final
Fee:
N/A
Permit Type:
Commercial
Building Type:
N/A
Replaced air compressor
Valuation:
N/A
Permit #:
25045-90000-00391
Status:
final
Fee:
N/A
Permit Type:
Commercial
Building Type:
N/A
Supplemental to permit # 23042-10000-11044 to add: install a new backwater valve on the sewer main and repair 2 water service
Valuation:
N/A
Permit #:
23042-30001-11044
Status:
final
Fee:
N/A
Permit Type:
Commercial
Building Type:
N/A
Potable water waste/vent low pressure gas. one (1) existing 1.5 domestic water meter one (1) new 1.5 backflow
Valuation:
N/A
Permit #:
20042-10000-15420
Status:
final
Fee:
N/A
Permit Type:
Commercial
Building Type:
N/A
4 back water valve
Valuation:
N/A
Permit #:
25042-90000-03938
Status:
final
Fee:
N/A
Permit Type:
Commercial
Building Type:
N/A
3 earthquake valve
Valuation:
N/A
Permit #:
24042-90000-15223
Status:
issued
Fee:
N/A
Permit Type:
Commercial
Building Type:
N/A
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MJ Hellmuth Plumbing Inc Reviews
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Verified License
BuildZoom confirmed this contractor's license
MJ Hellmuth Plumbing Inc License info
Verified License
| License # | 486785 |
| Status | Active |
| State | California |
| Type | Plumbing |
| Business Type | Corporation |
- BuildZoom verified this license was active as of March 2026.
Verify this license's status for MJ Hellmuth Plumbing Inc at the California Contractors State License Board.
This is a sample of licensing data; click here to access a complete history.
107
BuildZoom Score
Bonded
| Bonded Agent | American Contractors Indemnity Company |
| Bond Value | $15,000 |
Insured
| Workers Comp Provider | Insurance Company Of The West |
300
Permits
- Building permit records show that MJ Hellmuth Plumbing Inc has worked on 300 permitted projects.
MJ Hellmuth Plumbing Inc Employees
MH
Mark John Hellmuth
Sole Owner