Updated: Jul 17, 2025
Location and Projects
Address
4645 INDUSTRIAL ST UNIT 2C, Simi Valley, CA, 93063
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Sierra Commercial Plumbing Inc
Sierra Commercial Plumbing Inc, 4645 Industrial St, Simi Valley, CA (Employees: Alan Lee Jenkins, Nancy Ann Jenkins, and Randolph Ronald Jenkins) holds a Firestopping, Synthetic Products, Plumbing, Boiler, Hot Water Heating And Steam Fitting license according to the California license board.
Their BuildZoom score of 104 ranks in the top 9% of 336,931 California licensed contractors.
Their license was verified as active when we last checked. If you are thinking of hiring Sierra Commercial Plumbing Inc, we recommend double-checking their license status with the license board and using our bidding system to get competitive quotes.
Sierra Commercial Plumbing Inc Services
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Sierra Commercial Plumbing Inc Contact Information
Phone Number: (805) 527-9117
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Address: 4645 INDUSTRIAL ST UNIT 2C, Simi Valley, CA 93063
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Sierra Commercial Plumbing Inc Simi Valley
Quality
104
91st percentile
Pro tip:
We generally recommend hiring a contractor with a score higher than 95.
Sierra Commercial Plumbing Inc has a BuildZoom score of 104, which places them above 91% of 336,931 contractors in California.
Activity
|
3 projects
|
2025 |
|
5 projects
|
2024 |
|
6 projects
|
2023 |
|
41 projects
|
2022 |
Our building permit records indicate that Sierra Commercial Plumbing Inc has worked on at least
55.0 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
|
51 projects
|
Plumbing projects |
Analyzing permits over the last 4 years shows that Sierra Commercial Plumbing Inc mostly works on
plumbing project
projects.
Pricing
|
36 projects
|
< $5k |
The typical size of their permits is approximately $1,200. This graph shows the distribution of these job values.
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 Sierra Commercial Plumbing Inc
This is a sample of this contractor's permits. Click here to access their complete permit history.
Plumbing potable water - new water heaters and 3 master thermomixing valves. permit under 22042-90000--14376 for water heaters and first thermomixing valve. existing 4-inch domestic water meter
Valuation:
N/A
Permit #:
22042-10000-21521
Status:
final
Fee:
N/A
Permit Type:
Apartment
Building Type:
N/A
Potable water waste and vent medium pressure gas gas and rainwater systems 5-story building (retail and restaurant on 1st floor office on the 2nd through 5th levels and parking in 2 basement levels). 4-inch water meter. 4-inch potable water service line
Valuation:
N/A
Permit #:
17042-10000-09779
Status:
final
Fee:
N/A
Permit Type:
Commercial
Building Type:
N/A
Plan check only. installation of nsf 350 graywater system. includes sewage ejector. plumbing plans approved under 21042-20000-10153
Valuation:
N/A
Permit #:
22042-10000-26493
Status:
final
Fee:
N/A
Permit Type:
1 or 2 family dwe...
Building Type:
N/A
Grey water system. includes grey water reuse system. includes potable water cross connection with rp. sizing is per 15042-10000-13189
Valuation:
$3,687,300
Permit #:
17042-10000-24218
Status:
final
Fee:
N/A
Permit Type:
Apartment
Building Type:
N/A
Potable water with booster pump waste/vent with sewage ejector storm drainage with sump pump and rainwater harvesting system. connection to existing 3-inch domestic water meter with new 3-inch backflow prevetner
Valuation:
N/A
Permit #:
20042-10000-05846
Status:
final
Fee:
N/A
Permit Type:
Commercial
Building Type:
N/A
Revisions to approved plans (app. #920042-10k-05846). addition of a dual sewage ejector; revise waste piping and revise size of backflow to 3
Valuation:
N/A
Permit #:
20042-10001-05846
Status:
final
Fee:
N/A
Permit Type:
Commercial
Building Type:
N/A
Addition water heater not captured in main plumbing permit (23042-10000-11394) but approved per the plans
Valuation:
N/A
Permit #:
23042-90000-20487
Status:
final
Fee:
N/A
Permit Type:
Commercial
Building Type:
N/A
Domestic backflow install
Valuation:
N/A
Permit #:
25042-90000-09780
Status:
final
Fee:
N/A
Permit Type:
1 or 2 family dwe...
Building Type:
N/A
Plumbing tenant improvement includes potable water and waste/vent system
Valuation:
N/A
Permit #:
23042-10000-11394
Status:
final
Fee:
N/A
Permit Type:
Commercial
Building Type:
N/A
Backflow install
Valuation:
N/A
Permit #:
25042-90000-09792
Status:
final
Fee:
N/A
Permit Type:
1 or 2 family dwe...
Building Type:
N/A
Added gas line
Valuation:
N/A
Permit #:
25042-90000-00404
Status:
final
Fee:
N/A
Permit Type:
1 or 2 family dwe...
Building Type:
N/A
Potable water only for a new golf course mainanence building. exisiting 2 meter 2 rp and 2 prv
Valuation:
N/A
Permit #:
16042-30000-05210
Status:
final
Fee:
N/A
Permit Type:
Commercial
Building Type:
N/A
Supplemental permit to 22042-90000-09684 to addition additional items
Valuation:
N/A
Permit #:
22042-30001-09684
Status:
final
Fee:
N/A
Permit Type:
Apartment
Building Type:
N/A
Plan check only. revision to approved plans to change water waste/vent gas and storm systems. changes in water system consist of reducing the number of fixtures and pipe sizes but no change in hydraulic calculations change of fixture designations and labeling. rerouting and rechecking sizing of storm waste and vent and gas. (original scope of work: core and shell plumbing system for m... see more
Valuation:
N/A
Permit #:
16042-10001-26940
Status:
approved
Fee:
N/A
Permit Type:
Commercial
Building Type:
N/A
Install 1 redundant water heater for backup. replace failing pipe fittings addition 3 temp control valves on boiler piping replace (e) pressure regulators on roof and 13th floor
Valuation:
N/A
Permit #:
19042-10000-08610
Status:
issued
Fee:
N/A
Permit Type:
Apartment
Building Type:
N/A
Rainwater system - total of 53 rainwater drains
Valuation:
N/A
Permit #:
22042-10000-23235
Status:
final
Fee:
N/A
Permit Type:
Apartment
Building Type:
N/A
Sewer line alteration sewer line# la. 2189-35
Valuation:
N/A
Permit #:
22042-10000-21459
Status:
final
Fee:
N/A
Permit Type:
Apartment
Building Type:
N/A
Revision to approved plans to incorporate as-built conditions. changes to waste water gas and storm risers. changes under delta 52- dated 2019-01-15
Valuation:
N/A
Permit #:
16042-10004-26940
Status:
triage
Fee:
N/A
Permit Type:
Commercial
Building Type:
N/A
One backwater valve with manhole and one floor drain
Valuation:
N/A
Permit #:
23042-90000-22909
Status:
final
Fee:
N/A
Permit Type:
Commercial
Building Type:
N/A
Plumbing fixture and low pressure gas piping system going to one outlet
Valuation:
N/A
Permit #:
22042-20001-23495
Status:
issued
Fee:
N/A
Permit Type:
1 or 2 family dwe...
Building Type:
N/A
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BZ Score
$1.3K
Avg Project
-
Projects
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BZ Score
$9K
Avg Project
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Projects
140
BZ Score
$27.4K
Avg Project
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Projects
Sierra Commercial Plumbing Inc Reviews
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Verified License
BuildZoom confirmed this contractor's license
Sierra Commercial Plumbing Inc License info
Verified License
| License # | 710326 |
| Status | Active |
| State | California |
| Type | Firestopping, Synthetic Products, Plumbing, Boiler, Hot Water Heating And Steam Fitting |
| Business Type | Corporation |
- BuildZoom verified this license was active as of July 2025.
Verify this license's status for Sierra Commercial Plumbing Inc at the California Contractors State License Board.
This is a sample of licensing data; click here to access a complete history.
104
BuildZoom Score
Bonded
| Bonded Agent | American Contractors Indemnity Company |
| Bond Value | $15,000 |
Insured
| Workers Comp Provider | Insurance Company Of The West |
200
Permits
- Building permit records show that Sierra Commercial Plumbing Inc has worked on 200 permitted projects.
Sierra Commercial Plumbing Inc Employees
AJ
Alan Lee Jenkins
Officer
NJ
Nancy Ann Jenkins
Officer
RJ
Randolph Ronald Jenkins
Sole Owner