Updated: May 02, 2026
Location and Projects
Address
951 WEST F STREET, Ontario, CA, 91762
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the Specialist Plumbing
the Specialist Plumbing, 951 W F St, Ontario, CA (Owned by: Cesar Rafael Valenzuela) holds a Plumbing license according to the California license board.
Their BuildZoom score of 106 ranks in the top 7% of 336,931 California licensed contractors.
Their license was verified as active when we last checked. If you are thinking of hiring the Specialist Plumbing, we recommend double-checking their license status with the license board and using our project planner to get competitive quotes.
the Specialist Plumbing Services
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the Specialist Plumbing Contact Information
Phone Number: (909) 969-6044
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Address: 951 WEST F STREET, Ontario, CA 91762
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the Specialist Plumbing Ontario
Quality
106
93rd percentile
Pro tip:
We generally recommend hiring a contractor with a score higher than 95.
the Specialist Plumbing has a BuildZoom score of 106, which places them above 93% of 336,931 contractors in California.
Activity
|
1 project
|
2026 |
|
24 projects
|
2025 |
|
7 projects
|
2024 |
|
2 projects
|
2023 |
Our building permit records indicate that the Specialist Plumbing has worked on at least
34.0 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
|
31 projects
|
Plumbing projects |
|
3 projects
|
Sewer laterals |
Analyzing permits over the last 4 years shows that the Specialist Plumbing mostly works on
plumbing project
and sewer lateral
projects.
Pricing
|
5 projects
|
< $5k |
|
3 projects
|
$5k-$20k |
|
1 project
|
$20k-$50k |
The typical size of their permits is approximately $5,000. 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 the Specialist Plumbing
This is a sample of this contractor's permits. Click here to access their complete permit history.
Permit for entire single family dwelling pex repipe of 9 nine fixtures and change out of 40 gallon gas water heater
Valuation:
N/A
Permit #:
PLBG-25-00186
Status:
issued
Fee:
$111
Permit Type:
N/A
Building Type:
N/A
Revision to approved plans water waste & vent and gas system. original job description: domestic water and waste/vent plumbing systems. 1-1/2 domestic water meter. 2 r.p. backflow preventer
Valuation:
N/A
Permit #:
23042-10002-08733
Status:
plancheck
Fee:
N/A
Permit Type:
Apartment
Building Type:
N/A
Supplemental permit to #24042-30000-09711 10 fixture re-pipe 9 waste alterations 3- sgsov and repipe the main water line and change address to 1546 s hayworth ave 1-5
Valuation:
N/A
Permit #:
24042-40001-09711
Status:
issued
Fee:
N/A
Permit Type:
Apartment
Building Type:
N/A
Replace gas line at the rear from meter to property line (no prow work)
Valuation:
$2,500
Permit #:
BS2501821
Status:
final
Fee:
N/A
Permit Type:
N/A
Building Type:
Single family res...
Sewer cap demolish permit #23019-10000-02036 comply with department order effective date 02/10/2023. permit will expire 30 days from issuance date
Valuation:
N/A
Permit #:
24042-10000-02502
Status:
issued
Fee:
N/A
Permit Type:
1 or 2 family dwe...
Building Type:
N/A
Emergency repipe whole house pex repipe of 9 fixtures wmp req'd smoke and carbon monoxide form due at final
Valuation:
N/A
Permit #:
2025-1429
Status:
issued
Fee:
$245
Permit Type:
N/A
Building Type:
N/A
Supplemental permit 22042-10000-11681 to correct work description to read: new irrigation system to private residential sewer sub meter
Valuation:
N/A
Permit #:
22042-20001-11681
Status:
final
Fee:
N/A
Permit Type:
1 or 2 family dwe...
Building Type:
N/A
Water repipe with new copper pipe
Valuation:
$11,788
Permit #:
B00-036-250
Status:
issued
Fee:
$319
Permit Type:
Dwellings
Building Type:
N/A
Plumbing: whole house pex repipe
Valuation:
N/A
Permit #:
BLD2025-02614
Status:
final
Fee:
N/A
Permit Type:
Trade only
Building Type:
N/A
2 kitchen and 3 bathroom remodel
Valuation:
N/A
Permit #:
25042-30000-08822
Status:
final
Fee:
N/A
Permit Type:
Apartment
Building Type:
N/A
Supplemental to permit # 24042-90000-00997 to change the work from existing to new"original showers (2)
Valuation:
N/A
Permit #:
24042-30001-00997
Status:
final
Fee:
N/A
Permit Type:
Apartment
Building Type:
N/A
Plumbing for new jr adu
Valuation:
N/A
Permit #:
25042-20000-01868
Status:
final
Fee:
N/A
Permit Type:
Apartment
Building Type:
N/A
Installation ofnew hand sink kitchen sink mop sink and under ground repair
Valuation:
N/A
Permit #:
23042-10000-10341
Status:
final
Fee:
N/A
Permit Type:
Commercial
Building Type:
N/A
Water re-pipe
Valuation:
N/A
Permit #:
25042-20000-05558
Status:
issued
Fee:
N/A
Permit Type:
1 or 2 family dwe...
Building Type:
N/A
Copper re-piping
Valuation:
N/A
Permit #:
25042-20000-03152
Status:
final
Fee:
N/A
Permit Type:
1 or 2 family dwe...
Building Type:
N/A
Potable waste/vent low pressure gas and storm drainage system with sump pump for 3 story 9 unit apartment. new 2 water meter with 2 backflow device and sub-meter for each dwelling unit
Valuation:
N/A
Permit #:
18042-20000-12837
Status:
final
Fee:
N/A
Permit Type:
Apartment
Building Type:
N/A
Supplemental to permit# 22042-90000-02071 to change address to - 4919 s san pedro st
Valuation:
N/A
Permit #:
22042-10001-02071
Status:
final
Fee:
N/A
Permit Type:
1 or 2 family dwe...
Building Type:
N/A
Potable water waste/vent rainwater with duplex sump pump and low pressure gas for a new (4) story apartment building. includes a new 2 water meter 2 rp and 2 prv
Valuation:
N/A
Permit #:
17042-30000-03529
Status:
final
Fee:
N/A
Permit Type:
Apartment
Building Type:
N/A
Replace plumbing fixtures in bathrooms and kitchen replace laundry as needed
Valuation:
N/A
Permit #:
24042-30000-09711
Status:
final
Fee:
N/A
Permit Type:
Apartment
Building Type:
N/A
Domestic water and waste/vent plumbing systems. 1-1/2 domestic water meter. 2 r.p. backflow preventer
Valuation:
N/A
Permit #:
23042-10000-08733
Status:
final
Fee:
N/A
Permit Type:
Apartment
Building Type:
N/A
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the Specialist Plumbing Reviews
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Verified License
BuildZoom confirmed this contractor's license
the Specialist Plumbing License info
Verified License
| License # | 915935 |
| Status | Active |
| State | California |
| Type | Plumbing |
| Business Type | Sole Ownership |
- BuildZoom verified this license was active as of May 2026.
Verify this license's status for the Specialist Plumbing at the California Contractors State License Board.
This is a sample of licensing data; click here to access a complete history.
106
BuildZoom Score
Bonded
| Bonded Agent | American Contractors Indemnity Company |
| Bond Value | $15,000 |
Insured
| Workers Comp Provider | State Compensation Insurance Fund |
94
Permits
- Building permit records show that the Specialist Plumbing has worked on 94 permitted projects.
the Specialist Plumbing Employees
CV
Cesar Rafael Valenzuela
Owner